MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry

MuckStealer

Vendor detections: 15

Intelligence 15 IOCs YARA 7 File information Comments

SHA256 hash:	b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673
SHA3-384 hash:	f48c84953b7b90f6ff4d6860b853bd4d4cadde2b8370601eaa9d96b379a09ab25c0580475c1e644b900eb09b095e633a
SHA1 hash:	504b4f346205bc285b3def28ca897d36654f5223
MD5 hash:	969dc1413c1b82a6281f9db6e1a8bc60
humanhash:	quiet-missouri-artist-fifteen
File name:	osv32.exe
Download:	download sample
Signature	MuckStealer Create hunting rule
File size:	18'277'832 bytes
First seen:	2025-12-10 23:01:29 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	dcaf48c1f10b0efa0a4472200f3850ed (51 x BlankGrabber, 26 x Efimer, 22 x NetSupport)
ssdeep	393216:TqGp/uSfdjcMo173sB1rnpDw1FIv7msbHHJyLA:TqMTdjcMo14B1FDc6isDJAA
TLSH	T11D073318AB5014EEFCD7D03B695141D3B7F271242BA1DADB0B7812AC3F979E12A3E494
TrID	66.6% (.EXE) InstallShield setup (43053/19/16) 16.2% (.EXE) Win64 Executable (generic) (10522/11/4) 7.7% (.EXE) Win16 NE executable (generic) (5038/12/1) 3.1% (.EXE) OS/2 Executable (generic) (2029/13) 3.0% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
dhash icon	f0589a5bd89adc70 (4 x MuckStealer, 1 x RemcosRAT)
Reporter	smica83
Tags:	exe MuckStealer

Intelligence

File Origin

# of uploads :

# of downloads :

120

Origin country :

Vendor Threat Intelligence

Malware configuration found for:

PyInstaller

Details

PyInstaller

a compiled assembly and a Python version

Link:

https://research.acce.ciphertechsolutions.com/results/1494087b-4f97-4ba5-93b1-ac659e732b17/

Malware family:

n/a

ID:

File name:

Mandatory_Compliance_Notice.txt.lnk

Verdict:

Malicious activity

Analysis date:

2025-12-10 23:00:45 UTC

Tags:

susp-lnk python discord stealer evasion

Link:

https://app.any.run/tasks/a7ec2415-7029-4bae-8394-bfd4c6c98960

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection:

n/a

Link:

https://www.capesandbox.com/analysis/44248/

Verdict:

Malicious

Score:

92.5%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6939fbfabde6a3e5971009f6

Tags:

installer extens sage

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

expand installer-heuristic lolbin microsoft_visual_cc overlay overlay packed pyinstaller python stealer

Link:

https://www.filescan.io/uploads/6939fbf61eac7b9b76a4b880/reports/5d1ef982-0fc6-4855-a433-8242719689fb/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673

Verdict:

Malicious

File Type:

exe x64

First seen:

2025-12-03T15:20:00Z UTC

Last seen:

2025-12-11T20:55:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan.Python.Pytr.dm HEUR:Trojan.Python.Creal.a HEUR:Trojan.Python.Agent.gen.gen Trojan-PSW.Win32.Disco.sb Trojan-PSW.MSIL.Stealer.sb HEUR:Trojan.Python.Pytr.bi Trojan-PSW.Win32.Coins.sb Trojan-PSW.Python.Muck.sb HEUR:Trojan-PSW.Win64.BroPass.sb HEUR:Trojan-PSW.Python.Agent.gen HEUR:Trojan.Python.Rodico.gen

Link:

https://opentip.kaspersky.com/b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673/results?tab=lookup

Result

Threat name:

Python Stealer, Muck Stealer

Detection:

malicious

Classification:

troj

Score:

64 / 100

Link:

https://www.joesandbox.com/analysis/1830635

Signature

Found pyInstaller with non standard icon

Multi AV Scanner detection for submitted file

Yara detected Generic Python Stealer

Yara detected Muck Stealer

Behaviour

Behavior Graph:

Download SVG

Score:

98%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64

Link:

https://app.malva.re/file/969dc1413c1b82a6281f9db6e1a8bc60

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673/

Verdict:

Malicious

Threat:

Family.MUCK_STEALER

Link:

https://tip.neiki.dev/file/b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673

Threat name:

Win64.Trojan.CrealStealer

Status:

Malicious

First seen:

2025-12-03 22:41:25 UTC

File Type:

PE+ (Exe)

Extracted files:

1126

AV detection:

24 of 36 (66.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=wypokgf2itq73qlitjlkrv3f6efpf6o55tt5ub7yozo53dfeczzq._file

Result

Malware family:

muck_stealer

Score:

10/10

Tags:

family:muck_stealer credential_access defense_evasion discovery pyinstaller spyware stealer

Link:

https://tria.ge/reports/251210-2z8b6afl5z/

Behaviour

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

Browser Information Discovery

Accesses cryptocurrency files/wallets, possible credential harvesting

Legitimate hosting services abused for malware hosting/C2

Looks up external IP address via web service

Loads dropped DLL

Reads user/profile data of web browsers

Unsecured Credentials: Credentials In Files

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/6347d46a-446e-4c8c-b75b-9a13fd2d3dc8

Unpacked files

SH256 hash:

b61ee518ba44e1fdc1689a56a8d765f10af2f9ddece7da07f8765ddd8ca41673

MD5 hash:

969dc1413c1b82a6281f9db6e1a8bc60

SHA1 hash:

504b4f346205bc285b3def28ca897d36654f5223

Link:

https://www.unpac.me/results/aeed0fbe-c2cd-467e-b5c6-0e1acb2ea786/

SH256 hash:

052ad6a20d375957e82aa6a3c441ea548d89be0981516ca7eb306e063d5027f4

MD5 hash:

32da96115c9d783a0769312c0482a62d

SHA1 hash:

2ea840a5faa87a2fe8d7e5cb4367f2418077d66b

Link:

https://www.unpac.me/results/aeed0fbe-c2cd-467e-b5c6-0e1acb2ea786/

SH256 hash:

27972cedfa8ca9f6835a2cbbff95336b15773a05b10067e3b084409095341068

MD5 hash:

79d62d130655743c0edbfe60adb57836

SHA1 hash:

fdb7b138dbef34e7536cf8226043f318bdfa6ef6

Link:

https://www.unpac.me/results/aeed0fbe-c2cd-467e-b5c6-0e1acb2ea786/

Malware family:

MuckStealer

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/b61ee518ba44/report/overview.html

Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:	DebuggerCheck__API Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	DebuggerException__SetConsoleCtrl Create hunting rule
Reference:	https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

Rule name:	dependsonpythonailib Create hunting rule
Author:	Tim Brown
Description:	Hunts for dependencies on Python AI libraries

Rule name:	Detect_PyInstaller Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects PyInstaller compiled executables across platforms

Rule name:	golang_bin_JCorn_CSC846 Create hunting rule
Author:	Justin Cornwell
Description:	CSC-846 Golang detection ruleset

Rule name:	PyInstaller Create hunting rule
Author:	@bartblaze
Description:	Identifies executable converted using PyInstaller. This rule by itself does NOT necessarily mean the detected file is malicious.

Rule name:	upxHook Create hunting rule
Author:	@r3dbU7z
Description:	Detect artifacts from 'upxHook' - modification of UPX packer
Reference:	https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/