Malware analysis FabFilter_KeyGen.exe Malicious activity

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File name:	FabFilter_KeyGen.exe
Full analysis:	https://app.any.run/tasks/9d0ea7af-9dc4-46f4-92ed-2d4f61618549
Verdict:	Malicious activity
Analysis date:	April 11, 2026, 04:21:11
OS:	Windows 10 Professional (build: 19044, 64 bit)
Tags:	r2rkeygen keygen
Indicators:
MIME:	application/vnd.microsoft.portable-executable
File info:	PE32 executable (GUI) Intel 80386, for MS Windows, Nullsoft Installer self-extracting archive, 5 sections
MD5:	2BBD096A02E68977B40F50DE0C243D76
SHA1:	90B1814D8226C52A784EE10EC0DDA55FD4358AF1
SHA256:	82B38456CF80306542FDBB9229A1FCD41A6BE6E801836236C737AD327FA9E163
SSDEEP:	24576:K3sUkCN2U+zqhkrPyk4K00JsRHeDSix1hHX:K3sUkCN2U+zqh6Pyk4t0Js9eDSix1hHX

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:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
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)
Google Chrome (133.0.6943.127)
Google Update Helper (1.3.36.51)
Java 8 Update 271 (64-bit) (8.0.2710.9)
Java Auto Updater (2.8.271.9)
Java(TM) SE Development Kit 25.0.2 (64-bit) (25.0.2.0)
Microsoft Edge (133.0.3065.92)
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) (136.0)
Mozilla Maintenance Service (136.0)
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)
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
- R2RKEYGEN has been detected
  - FabFilter_KeyGen.exe (PID: 6412)
SUSPICIOUS
- Executable content was dropped or overwritten
  - FabFilter_KeyGen.exe (PID: 6412)
INFO
- Checks supported languages
  - FabFilter_KeyGen.exe (PID: 6412)
  - keygen.exe (PID: 4328)
- Create files in a temporary directory
  - FabFilter_KeyGen.exe (PID: 6412)
  - keygen.exe (PID: 4328)
- Reads the computer name
  - keygen.exe (PID: 4328)
- There is functionality for taking screenshot (YARA)
  - FabFilter_KeyGen.exe (PID: 6412)
  - keygen.exe (PID: 4328)
- Reads the machine GUID from the registry
  - keygen.exe (PID: 4328)

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	\|	NSIS - Nullsoft Scriptable Install System (94.8)
.exe	\|	Win32 Executable MS Visual C++ (generic) (3.4)
.dll	\|	Win32 Dynamic Link Library (generic) (0.7)
.exe	\|	Win32 Executable (generic) (0.5)
.exe	\|	Generic Win/DOS Executable (0.2)

EXIF

EXE

MachineType:	Intel 386 or later, and compatibles
TimeStamp:	2009:12:05 22:50:46+00:00
ImageFileCharacteristics:	No relocs, Executable, No line numbers, No symbols, 32-bit
PEType:	PE32
LinkerVersion:	6
CodeSize:	23552
InitializedDataSize:	119808
UninitializedDataSize:	1024
EntryPoint:	0x323c
OSVersion:	4
ImageVersion:	6
SubsystemVersion:	4
Subsystem:	Windows GUI

No data.

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All screenshots are available in the full report

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Total processes

128

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID

CMD

Path

Indicators

Parent process

4328

C:\Users\admin\AppData\Local\Temp\keygen.exe

—

FabFilter_KeyGen.exe

User:

admin

Integrity Level:

HIGH

Modules

Images
c:\users\admin\appdata\local\temp\keygen.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\acgenral.dll

6412

"C:\Users\admin\AppData\Local\Temp\FabFilter_KeyGen.exe"

C:\Users\admin\AppData\Local\Temp\FabFilter_KeyGen.exe

explorer.exe

User:

admin

Integrity Level:

HIGH

Modules

Images
c:\users\admin\appdata\local\temp\fabfilter_keygen.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\acgenral.dll

6988

"C:\Users\admin\AppData\Local\Temp\FabFilter_KeyGen.exe"

C:\Users\admin\AppData\Local\Temp\FabFilter_KeyGen.exe

—

explorer.exe

User:

admin

Integrity Level:

MEDIUM

Exit code:

3221226540

Modules

Images
c:\users\admin\appdata\local\temp\fabfilter_keygen.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll

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Total events

348

Read events

348

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
4328	keygen.exe	C:\Users\admin\AppData\Local\Temp\~DF6078B24F9F22FF2E.TMP		binary
		MD5:4BC6F7D5EDBD026CC863BB5A038354F7	SHA256:D0AF7484C3D1459EB6160D13430BB2202B6A7AEAAF077243E59E47ABB86D5885
6412	FabFilter_KeyGen.exe	C:\Users\admin\AppData\Local\Temp\bgm.it		binary
		MD5:5E3C083251880C635F5EA6A0A6ED8E76	SHA256:9D460A48D7F7F461967C9065182456871606EEF1C27F21767335B7D81384E141
6412	FabFilter_KeyGen.exe	C:\Users\admin\AppData\Local\Temp\BASSMOD.dll		executable
		MD5:E4EC57E8508C5C4040383EBE6D367928	SHA256:8AD9E47693E292F381DA42DDC13724A3063040E51C26F4CA8E1F8E2F1DDD547F
6412	FabFilter_KeyGen.exe	C:\Users\admin\AppData\Local\Temp\keygen.exe		executable
		MD5:D1DFFD39A24E6DBB3900009CA1CE9138	SHA256:F6445A70DACB174D81CB012315C03C4D529FBD5FC514E072708684D3B7E095F4
6412	FabFilter_KeyGen.exe	C:\Users\admin\AppData\Local\Temp\R2RFBFKG.dll		executable
		MD5:D9E603D8B6056C2E73C6AFAEE27E826F	SHA256:3245C4C10193826BDD307AF6F8208C4D7C8E3C8D41D31EAA0F7EEB34F3D339DC

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
5276	MoUsoCoreWorker.exe	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	825 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/Microsoft%20Time-Stamp%20PCA%202010(1).crl	US	binary	814 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.3.crl	US	binary	400 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/Microsoft%20ECC%20Update%20Signing%20CA%202.2.crl	US	binary	400 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.2.crl	US	binary	813 b	whitelisted
6076	svchost.exe	GET	200	23.216.77.28:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl	NL	binary	825 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/Microsoft%20Update%20Signing%20CA%202.3.crl	US	binary	813 b	whitelisted
3280	svchost.exe	GET	200	23.216.77.6:80	http://crl.microsoft.com/pki/crl/products/MicRooCerAut_2010-06-23.crl	NL	binary	824 b	whitelisted
3280	svchost.exe	GET	200	72.246.29.11:80	http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl	US	binary	814 b	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	—	Not routed	—	whitelisted
—	—	20.73.194.208:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
5276	MoUsoCoreWorker.exe	23.216.77.28:80	crl.microsoft.com	AKAMAI-ASN1	NL	whitelisted
6076	svchost.exe	23.216.77.28:80	crl.microsoft.com	AKAMAI-ASN1	NL	whitelisted
—	—	48.192.1.64:443	activation-v2.sls.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
—	—	4.231.128.59:443	settings-win.data.microsoft.com	MICROSOFT-CORP-MSN-AS-BLOCK	US	whitelisted
4	System	192.168.100.255:138	—	Not routed	—	whitelisted
3280	svchost.exe	72.246.29.11:80	www.microsoft.com	AKAMAI-AS	US	whitelisted
3280	svchost.exe	23.216.77.6:80	crl.microsoft.com	AKAMAI-ASN1	NL	whitelisted

DNS requests

Domain	IP	Reputation
settings-win.data.microsoft.com	20.73.194.208 4.231.128.59	whitelisted
crl.microsoft.com	23.216.77.28 23.216.77.6	whitelisted
www.microsoft.com	72.246.29.11	whitelisted
activation-v2.sls.microsoft.com	48.192.1.64	whitelisted
google.com	142.251.110.101 142.251.110.102 142.251.110.113 142.251.110.100 142.251.110.138 142.251.110.139	whitelisted
self.events.data.microsoft.com	13.89.178.27	whitelisted

Threats

No threats detected

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No debug info

General Info

FabFilter_KeyGen.exe

2BBD096A02E68977B40F50DE0C243D76

90B1814D8226C52A784EE10EC0DDA55FD4358AF1

82B38456CF80306542FDBB9229A1FCD41A6BE6E801836236C737AD327FA9E163

24576:K3sUkCN2U+zqhkrPyk4K00JsRHeDSix1hHX:K3sUkCN2U+zqh6Pyk4t0Js9eDSix1hHX

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

R2RKEYGEN has been detected

SUSPICIOUS

Executable content was dropped or overwritten

INFO

Checks supported languages

Create files in a temporary directory

Reads the computer name

There is functionality for taking screenshot (YARA)

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