Malware analysis b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin Malicious activity

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File name:	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin
Full analysis:	https://app.any.run/tasks/ec96fa7d-c501-4ee5-8996-f83d8add173a
Verdict:	Malicious activity
Threats:	BlueSky ransomware, first identified in June 2022, shares code similarities with other well-known ransomware families like Conti and Babuk. It primarily spreads via phishing emails and malicious links and can propagate through networks using SMB protocols. BlueSky uses advanced evasion techniques, such as hiding its processes from debuggers via the NtSetInformationThread API, making it difficult for analysts to detect and mitigate its attacks. Ransomware is a type of malicious software that locks users out of their system or data using different methods to force them to pay a ransom. Most often, such programs encrypt files on an infected machine and demand a fee to be paid in exchange for the decryption key. Additionally, such programs can be used to steal sensitive information from the compromised computer and even conduct DDoS attacks against affected organizations to pressure them into paying. Malware Trends Tracker >>>
Analysis date:	March 24, 2025, 23:17:49
OS:	Windows 10 Professional (build: 19045, 64 bit)
Tags:	bluesky ransomware
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, 3 sections
MD5:	0BBB9B0D573A9C6027CA7E0B1F5478BF
SHA1:	59E756E0DA6A82A0F9046A3538D507C75EB95252
SHA256:	B5B105751A2BF965A6B78EEFF100FE4C75282AD6F37F98B9ADCD15D8C64283EC
SSDEEP:	1536:wBrE2D2ZjyKBQs8swOVWCqBTXdXu3+MkNCMm2i9L4:iBD2RfQ/7OVWS3+1rm2i9L4

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:: 180 seconds
Heavy Evasion option:
Network geolocation:: off
Additional time used:: 120 seconds
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: off
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
- RANSOMWARE has been detected
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
- Renames files like ransomware
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
- Bluesky note has been found
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
SUSPICIOUS
- Reads the date of Windows installation
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
INFO
- Creates files or folders in the user directory
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
- Checks supported languages
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
- Reads the computer name
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)
- Reads the machine GUID from the registry
  - b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe (PID: 3304)

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	\|	Win32 Executable (generic) (52.9)
.exe	\|	Generic Win/DOS Executable (23.5)
.exe	\|	DOS Executable Generic (23.5)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2085:02:07 16:05:31+00:00
ImageFileCharacteristics:	Executable, 32-bit
PEType:	PE32
LinkerVersion:	94.8
CodeSize:	67584
InitializedDataSize:	7168
UninitializedDataSize:	-
EntryPoint:	0xe880
OSVersion:	5.1
ImageVersion:	48623.16013
SubsystemVersion:	5.1
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

131

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

3304

"C:\Users\admin\Desktop\b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe"

C:\Users\admin\Desktop\b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Modules

Images
c:\users\admin\desktop\b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\advapi32.dll

7236

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

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

7268

"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

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

683

Read events

680

Write events

Delete events

Modification events


(PID) Process:	(3304) b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\EA408C6BF0D12F526F821798C3F54C9A
Operation:	write	Name:	RECOVERYBLOB
Value: 4EA4D0EE6B8BAAF889A50366DBFC31C63ACEAFB4BEBB00CCDCC0343276899A938F17D9A7B0D3CA3C0AB4F54F6C7D25343B9F4C081876337B2DC9BEE7F53D496FAD1BF693AD9E3BA15459DF0F6201A353D0CFDB50F667283C1233AAD4F4BAE14EF60CDB8D98426EE34DC89FCF0ECF3150490B3B31AA76C047
(PID) Process:	(3304) b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\EA408C6BF0D12F526F821798C3F54C9A
Operation:	write	Name:	x25519_public
Value: 24B87D3D2A95B9A1DF4FB47427FF1D76A9C351BABDA8522DCC4E88E5E6BDF94F
(PID) Process:	(3304) b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	Key:	HKEY_CURRENT_USER\SOFTWARE\EA408C6BF0D12F526F821798C3F54C9A
Operation:	write	Name:	completed
Value: 0

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Executable files

Suspicious files

Text files

110

Unknown types

Dropped files

PID	Process	Filename		Type
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\Desktop\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\.ms-ad\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\3D Objects\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\# DECRYPT FILES BLUESKY #.html		html
		MD5:E8A24383504AFB3C6312DAA649378CEE	SHA256:20BA6DE45374C9B2A5BF5511810F87E632536CFD032DEAB34EC794986C9F0BB9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\.ms-ad\# DECRYPT FILES BLUESKY #.html		html
		MD5:E8A24383504AFB3C6312DAA649378CEE	SHA256:20BA6DE45374C9B2A5BF5511810F87E632536CFD032DEAB34EC794986C9F0BB9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\Contacts\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\3D Objects\# DECRYPT FILES BLUESKY #.html		html
		MD5:E8A24383504AFB3C6312DAA649378CEE	SHA256:20BA6DE45374C9B2A5BF5511810F87E632536CFD032DEAB34EC794986C9F0BB9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\Desktop\# DECRYPT FILES BLUESKY #.html		html
		MD5:E8A24383504AFB3C6312DAA649378CEE	SHA256:20BA6DE45374C9B2A5BF5511810F87E632536CFD032DEAB34EC794986C9F0BB9
3304	b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin.exe	C:\Users\admin\AppData\Local\VirtualStore\# DECRYPT FILES BLUESKY #.txt		text
		MD5:93091ED57E2B99631311AEFA2C493E51	SHA256:42F43C111C6D4C823F4FDD1C6759D840F5FD5860A86F62F130E407C61626D5C9

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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
—	—	GET	200	23.48.23.176:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	unknown	—	—	whitelisted
1628	backgroundTaskHost.exe	GET	200	2.17.190.73:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQ50otx%2Fh0Ztl%2Bz8SiPI7wEWVxDlQQUTiJUIBiV5uNu5g%2F6%2BrkS7QYXjzkCEAUZZSZEml49Gjh0j13P68w%3D	unknown	—	—	whitelisted
6544	svchost.exe	GET	200	2.17.190.73:80	http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%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
2104	svchost.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
—	—	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
—	—	23.48.23.176:80	crl.microsoft.com	Akamai International B.V.	DE	whitelisted
4	System	192.168.100.255:138	—	—	—	whitelisted
5496	MoUsoCoreWorker.exe	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
4	System	192.168.100.255:137	—	—	—	whitelisted
6544	svchost.exe	20.190.159.75:443	login.live.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted
3216	svchost.exe	40.115.3.253:443	client.wns.windows.com	MICROSOFT-CORP-MSN-AS-BLOCK	NL	whitelisted
6544	svchost.exe	2.17.190.73:80	ocsp.digicert.com	AKAMAI-AS	DE	whitelisted
2112	svchost.exe	51.104.136.2:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	IE	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	20.73.194.208 51.104.136.2	whitelisted
crl.microsoft.com	23.48.23.176 23.48.23.166 23.48.23.143	whitelisted
google.com	142.250.181.238	whitelisted
login.live.com	20.190.159.75 20.190.159.130 40.126.31.131 20.190.159.131 40.126.31.3 40.126.31.129 40.126.31.128 20.190.159.71	whitelisted
client.wns.windows.com	40.115.3.253	whitelisted
ocsp.digicert.com	2.17.190.73	whitelisted
arc.msn.com	20.223.35.26	whitelisted

Threats

No threats detected

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No debug info

General Info

b5b105751a2bf965a6b78eeff100fe4c75282ad6f37f98b9adcd15d8c64283ec.bin

0BBB9B0D573A9C6027CA7E0B1F5478BF

59E756E0DA6A82A0F9046A3538D507C75EB95252

B5B105751A2BF965A6B78EEFF100FE4C75282AD6F37F98B9ADCD15D8C64283EC

1536:wBrE2D2ZjyKBQs8swOVWCqBTXdXu3+MkNCMm2i9L4:iBD2RfQ/7OVWS3+1rm2i9L4

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

RANSOMWARE has been detected

Renames files like ransomware

Bluesky note has been found

SUSPICIOUS

Reads the date of Windows installation

INFO

Creates files or folders in the user directory

Checks supported languages

Reads the computer name

Reads the machine GUID from the registry

Malware configuration

Static information

TRiD

EXIF

EXE

Video and screenshots

Processes

Behavior graph

Specs description

Process information

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