Malware analysis bb.dll Malicious activity | ANY.RUN

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File name:	bb.dll
Full analysis:	https://app.any.run/tasks/fc1fb5e5-1553-4e47-8661-2bc40bd5b16c
Verdict:	Malicious activity
Threats:	Bumblebee is a highly adaptable malware loader, often used by threat actors linked to the Conti and TrickBot cybercrime groups. Since its discovery in 2021, Bumblebee has been leveraged in phishing campaigns and email thread hijacking, primarily to distribute payloads like Cobalt Strike and ransomware. The malware employs obfuscation techniques, such as DLL injection and virtual environment detection, to avoid detection and sandbox analysis. Its command-and-control infrastructure and anti-analysis features allow it to persist on infected devices, where it enables further payload downloads and system compromise. Malware Trends Tracker >>>
Analysis date:	April 12, 2025, 16:00:44
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	bumblebee
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32+ executable (DLL) (GUI) x86-64, for MS Windows, 8 sections
MD5:	6E780435DA8461940FC822F31B7368D2
SHA1:	1F9467A1495EE143588E9B53F0A5B1EBE311D4B5
SHA256:	0A4AF4996A5F1C091CDE6B18907C08FE31F373D7477D2F524161A45D130A1FAC
SSDEEP:	24576:t1RppZDse/2Z8Xif541DyvwRowOzLQj6ZQvBO4X6vwt90JgxAJifFnq7bjT1hkog:xppZDse/2Kr6ZQvBO4X6ot90JgxAJi9m

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

Launch configuration

Task duration:: 300 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: 240 seconds
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 11.3636.19041.0
Adobe Acrobat (64-bit) (23.001.20093)
Adobe Flash Player 32 NPAPI (32.0.0.465)
Adobe Flash Player 32 PPAPI (32.0.0.465)
CCleaner (6.20)
FileZilla 3.65.0 (3.65.0)
Google Chrome (122.0.6261.70)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Microsoft Edge (122.0.2365.59)
Microsoft Edge Update (1.3.185.17)
Microsoft Office Professional 2019 - de-de (16.0.16026.20146)
Microsoft Office Professional 2019 - en-us (16.0.16026.20146)
Microsoft Office Professional 2019 - es-es (16.0.16026.20146)
Microsoft Office Professional 2019 - it-it (16.0.16026.20146)
Microsoft Office Professional 2019 - ja-jp (16.0.16026.20146)
Microsoft Office Professional 2019 - ko-kr (16.0.16026.20146)
Microsoft Office Professional 2019 - pt-br (16.0.16026.20146)
Microsoft Office Professional 2019 - tr-tr (16.0.16026.20146)
Microsoft Office Professionnel 2019 - fr-fr (16.0.16026.20146)
Microsoft Office профессиональный 2019 - ru-ru (16.0.16026.20146)
Microsoft OneNote - en-us (16.0.16026.20146)
Microsoft Update Health Tools (3.74.0.0)
Microsoft Visual C++ 2013 Redistributable (x64) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x64 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x64 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2015-2022 Redistributable (x64) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2015-2022 Redistributable (x86) - 14.36.32532 (14.36.32532.0)
Microsoft Visual C++ 2022 X64 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X64 Minimum Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Additional Runtime - 14.36.32532 (14.36.32532)
Microsoft Visual C++ 2022 X86 Minimum Runtime - 14.36.32532 (14.36.32532)
Mozilla Firefox (x64 en-US) (123.0)
Mozilla Maintenance Service (123.0)
Notepad++ (64-bit x64) (7.9.1)
Office 16 Click-to-Run Extensibility Component (16.0.15726.20202)
Office 16 Click-to-Run Licensing Component (16.0.16026.20146)
Office 16 Click-to-Run Localization Component (16.0.15726.20202)
Office 16 Click-to-Run Localization Component (16.0.15928.20198)
PowerShell 7-x64 (7.3.5.0)
Skype version 8.104 (8.104)
Update for Windows 10 for x64-based Systems (KB4023057) (2.59.0.0)
Update for Windows 10 for x64-based Systems (KB4023057) (2.63.0.0)
Update for Windows 10 for x64-based Systems (KB4480730) (2.55.0.0)
Update for Windows 10 for x64-based Systems (KB5001716) (8.93.0.0)
VLC media player (3.0.11)
WinRAR 5.91 (64-bit) (5.91.0)
Windows PC Health Check (3.6.2204.08001)

Hotfixes

Client LanguagePack Package
DotNetRollup
DotNetRollup 481
FodMetadata Package
Foundation Package
Hello Face Package
InternetExplorer Optional Package
KB5003791
KB5011048
KB5015684
KB5033052
LanguageFeatures Basic en us Package
LanguageFeatures Handwriting en us Package
LanguageFeatures OCR en us Package
LanguageFeatures Speech en us Package
LanguageFeatures TextToSpeech en us Package
MSPaint FoD Package
MediaPlayer Package
Microsoft OneCore ApplicationModel Sync Desktop FOD Package
Microsoft OneCore DirectX Database FOD Package
NetFx3 OnDemand Package
Notepad FoD Package
OpenSSH Client Package
PowerShell ISE FOD Package
Printing PMCPPC FoD Package
Printing WFS FoD Package
ProfessionalEdition
QuickAssist Package
RollupFix
ServicingStack
ServicingStack 3989
StepsRecorder Package
TabletPCMath Package
UserExperience Desktop Package
WordPad FoD Package

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MALICIOUS
- BUMBLEBEE has been detected (YARA)
  - rundll32.exe (PID: 7440)
SUSPICIOUS
- Connects to unusual port
  - rundll32.exe (PID: 7440)
INFO
- Reads the software policy settings
  - slui.exe (PID: 7672)
  - slui.exe (PID: 7832)
- Manual execution by a user
  - Taskmgr.exe (PID: 4108)
  - Taskmgr.exe (PID: 6964)
- Checks proxy server information
  - slui.exe (PID: 7832)
- Reads security settings of Internet Explorer
  - Taskmgr.exe (PID: 4108)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.exe	\|	Win64 Executable (generic) (87.3)
.exe	\|	Generic Win/DOS Executable (6.3)
.exe	\|	DOS Executable Generic (6.3)

EXIF

EXE

MachineType:	AMD AMD64
TimeStamp:	2022:11:03 12:24:11+00:00
ImageFileCharacteristics:	Executable, Large address aware, DLL
PEType:	PE32+
LinkerVersion:	14
CodeSize:	90624
InitializedDataSize:	901632
UninitializedDataSize:	-
EntryPoint:	0x24e0
OSVersion:	6
ImageVersion:	-
SubsystemVersion:	6
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

140

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

4108

"C:\WINDOWS\system32\taskmgr.exe" /7

C:\Windows\System32\Taskmgr.exe

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

HIGH

Description:

Task Manager

Exit code:

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\taskmgr.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\oleaut32.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\nsi.dll

6964

"C:\WINDOWS\system32\taskmgr.exe" /7

C:\Windows\System32\Taskmgr.exe

—

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Task Manager

Exit code:

3221226540

Version:

10.0.19041.3636 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\taskmgr.exe
c:\windows\system32\ntdll.dll

7440

"C:\Windows\System32\rundll32.exe" C:\Users\admin\AppData\Local\Temp\bb.dll, #1

C:\Windows\System32\rundll32.exe

explorer.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows host process (Rundll32)

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shcore.dll
c:\windows\system32\imagehlp.dll

7640

C:\WINDOWS\system32\SppExtComObj.exe -Embedding

C:\Windows\System32\SppExtComObj.Exe

—

svchost.exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

KMS Connection Broker

Exit code:

Version:

10.0.19041.3996 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\sppextcomobj.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\oleaut32.dll

7672

"C:\WINDOWS\System32\SLUI.exe" RuleId=3482d82e-ca2c-4e1f-8864-da0267b484b2;Action=AutoActivate;AppId=55c92734-d682-4d71-983e-d6ec3f16059f;SkuId=4de7cb65-cdf1-4de9-8ae8-e3cce27b9f2c;NotificationInterval=1440;Trigger=TimerEvent

C:\Windows\System32\slui.exe

SppExtComObj.Exe

User:

NETWORK SERVICE

Company:

Microsoft Corporation

Integrity Level:

SYSTEM

Description:

Windows Activation Client

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll

7832

C:\WINDOWS\System32\slui.exe -Embedding

C:\Windows\System32\slui.exe

svchost.exe

User:

admin

Company:

Microsoft Corporation

Integrity Level:

MEDIUM

Description:

Windows Activation Client

Exit code:

Version:

10.0.19041.1 (WinBuild.160101.0800)

Modules

Images
c:\windows\system32\slui.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\user32.dll

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Total events

2 920

Read events

2 917

Write events

Delete events

Modification events


(PID) Process:	(4108) Taskmgr.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\TaskManager
Operation:	delete value	Name:	Preferences
Value:
(PID) Process:	(4108) Taskmgr.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\TaskManager
Operation:	write	Name:	Preferences
Value: 0D00000060000000600000006800000068000000E3010000DC010000000001000000008000000080D8010080DF010080000100016B00000034000000130300008C020000E80300000000000000000000000000000F000000010000000000000058AA043AF67F00000000000000000000000000002E0100001E0000008990000000000000FF00000001015002000000000D0000000000000098AA043AF67F00000000000000000000FFFFFFFF960000001E0000008B900000010000000000000000101001000000000300000000000000B0AA043AF67F00000000000000000000FFFFFFFF780000001E0000008C900000020000000000000001021200000000000400000000000000C8AA043AF67F00000000000000000000FFFFFFFF960000001E0000008D900000030000000000000000011001000000000200000000000000E8AA043AF67F00000000000000000000FFFFFFFF320000001E0000008A90000004000000000000000008200100000000050000000000000000AB043AF67F00000000000000000000FFFFFFFFC80000001E0000008E90000005000000000000000001100100000000060000000000000028AB043AF67F00000000000000000000FFFFFFFF040100001E0000008F90000006000000000000000001100100000000070000000000000050AB043AF67F00000000000000000000FFFFFFFF49000000490000009090000007000000000000000004250000000000080000000000000080AA043AF67F00000000000000000000FFFFFFFF49000000490000009190000008000000000000000004250000000000090000000000000070AB043AF67F00000000000000000000FFFFFFFF490000004900000092900000090000000000000000042508000000000A0000000000000088AB043AF67F00000000000000000000FFFFFFFF4900000049000000939000000A0000000000000000042508000000000B00000000000000A8AB043AF67F00000000000000000000FFFFFFFF490000004900000039A000000B0000000000000000042509000000001C00000000000000C8AB043AF67F00000000000000000000FFFFFFFFC8000000490000003AA000000C0000000000000000011009000000001D00000000000000F0AB043AF67F00000000000000000000FFFFFFFF64000000490000004CA000000D0000000000000000021508000000001E0000000000000010AC043AF67F00000000000000000000FFFFFFFF64000000490000004DA000000E000000000000000002150800000000030000000A000000010000000000000058AA043AF67F0000000000000000000000000000D70000001E0000008990000000000000FF00000001015002000000000400000000000000C8AA043AF67F0000000000000000000001000000960000001E0000008D900000010000000000000001011000000000000300000000000000B0AA043AF67F00000000000000000000FFFFFFFF640000001E0000008C900000020000000000000000021000000000000C0000000000000040AC043AF67F0000000000000000000003000000640000001E00000094900000030000000000000001021000000000000D0000000000000068AC043AF67F00000000000000000000FFFFFFFF640000001E00000095900000040000000000000000011001000000000E0000000000000090AC043AF67F0000000000000000000005000000320000001E00000096900000050000000000000001042001000000000F00000000000000B8AC043AF67F0000000000000000000006000000320000001E00000097900000060000000000000001042001000000001000000000000000D8AC043AF67F0000000000000000000007000000460000001E00000098900000070000000000000001011001000000001100000000000000F8AC043AF67F00000000000000000000FFFFFFFF640000001E0000009990000008000000000000000001100100000000060000000000000028AB043AF67F0000000000000000000009000000040100001E0000008F9000000900000000000000010110010000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000040000000B000000010000000000000058AA043AF67F0000000000000000000000000000D70000001E0000009E90000000000000FF0000000101500200000000120000000000000020AD043AF67F00000000000000000000FFFFFFFF2D0000001E0000009B90000001000000000000000004200100000000140000000000000040AD043AF67F00000000000000000000FFFFFFFF640000001E0000009D90000002000000000000000001100100000000130000000000000068AD043AF67F00000000000000000000FFFFFFFF640000001E0000009C900000030000000000000000011001000000000300000000000000B0AA043AF67F00000000000000000000FFFFFFFF640000001E0000008C90000004000000000000000102100000000000070000000000000050AB043AF67F000000000000000000000500000049000000490000009090000005000000000000000104210000000000080000000000000080AA043AF67F000000000000000000000600000049000000490000009190000006000000000000000104210000000000090000000000000070AB043AF67F0000000000000000000007000000490000004900000092900000070000000000000001042108000000000A0000000000000088AB043AF67F0000000000000000000008000000490000004900000093900000080000000000000001042108000000000B00000000000000A8AB043AF67F0000000000000000000009000000490000004900000039A00000090000000000000001042109000000001C00000000000000C8AB043AF67F000000000000000000000A00000064000000490000003AA000000A00000000000000000110090000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
4108	Taskmgr.exe	C:\Users\admin\AppData\Local\D3DSCache\3534848bb9f4cb71\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock		text
		MD5:F49655F856ACB8884CC0ACE29216F511	SHA256:7852FCE59C67DDF1D6B8B997EAA1ADFAC004A9F3A91C37295DE9223674011FBA

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
5496	MoUsoCoreWorker.exe	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
8144	SIHClient.exe	GET	200	2.19.217.218:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Product%20Root%20Certificate%20Authority%202018.crl	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	2.17.190.73:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D	unknown	—	—	whitelisted
2924	SearchApp.exe	GET	200	2.23.77.188:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAn5bsKVVV8kdJ6vHl3O1J0%3D	unknown	—	—	whitelisted
8144	SIHClient.exe	GET	200	2.19.217.218:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Secure%20Server%20CA%202.1.crl	unknown	—	—	whitelisted
2924	SearchApp.exe	GET	200	2.23.77.188:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTrjrydRyt%2BApF3GSPypfHBxR5XtQQUs9tIpPmhxdiuNkHMEWNpYim8S8YCEAI5PUjXAkJafLQcAAsO18o%3D	unknown	—	—	whitelisted

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
4	System	192.168.100.255:137	—	—	—	whitelisted
2104	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
—	—	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
5496	MoUsoCoreWorker.exe	23.216.77.28:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
2112	svchost.exe	40.127.240.158:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3216	svchost.exe	172.211.123.248:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	FR	whitelisted
6544	svchost.exe	20.190.159.130:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
6544	svchost.exe	2.17.190.73:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted
2104	svchost.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	40.127.240.158 20.73.194.208	whitelisted
crl.microsoft.com	23.216.77.28 23.216.77.22 23.216.77.18 23.216.77.30 23.216.77.38	whitelisted
google.com	142.250.186.142	whitelisted
client.wns.windows.com	172.211.123.248	whitelisted
login.live.com	20.190.159.130 20.190.159.64 20.190.159.68 20.190.159.71 20.190.159.23 40.126.31.130 40.126.31.128 40.126.31.3	whitelisted
ocsp.digicert.com	2.17.190.73 2.23.77.188	whitelisted
slscr.update.microsoft.com	52.149.20.212	whitelisted
www.microsoft.com	2.19.217.218	whitelisted
fe3cr.delivery.mp.microsoft.com	40.69.42.241	whitelisted
www.bing.com	2.16.241.218 2.16.241.205 2.16.241.201	whitelisted

Threats

No threats detected

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No debug info

General Info

bb.dll

6E780435DA8461940FC822F31B7368D2

1F9467A1495EE143588E9B53F0A5B1EBE311D4B5

0A4AF4996A5F1C091CDE6B18907C08FE31F373D7477D2F524161A45D130A1FAC

24576:t1RppZDse/2Z8Xif541DyvwRowOzLQj6ZQvBO4X6vwt90JgxAJifFnq7bjT1hkog:xppZDse/2Kr6ZQvBO4X6ot90JgxAJi9m

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

BUMBLEBEE has been detected (YARA)

SUSPICIOUS

Connects to unusual port

INFO

Reads the software policy settings

Manual execution by a user

Checks proxy server information

Reads security settings of Internet Explorer

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Information

Modules

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings