MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136. 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

Stealc

Vendor detections: 9

Intelligence 9 IOCs 1 YARA 17 File information Comments

SHA256 hash:	31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136
SHA3-384 hash:	d4d1473e6ca4f3971ed5d1036df66a213a1d88dad808a8c48d31e889d632ab321754b7d9b3272405d4020ed345b7a9eb
SHA1 hash:	71089ead6d39b056cfc71ad83932b1129df7fabc
MD5 hash:	d6dac6e34fd6e2a1669885a58675dfad
humanhash:	moon-glucose-winter-london
File name:	FreeFiles_20251223151217.zip
Download:	download sample
Signature	Stealc Create hunting rule
File size:	9'842'382 bytes
First seen:	2025-12-23 15:03:13 UTC
Last seen:	Never
File type:	zip
MIME type:	application/zip
ssdeep	196608:R11GeA+L1HHbfnCGOTfz72ZT7Qwz65ZgzP60yWpucws0rtqUru:R79A+VbqGODzCxHzQZehyvAeqUru
TLSH	T1FAA6330BFFE3900D0E6D48E8C355B988141FCE6DBE4749929FD782AAF793B4109E9056
TrID	66.6% (.FB2K-COMPONENT) foobar2000 component (8000/1/2) 33.3% (.ZIP) ZIP compressed archive (4000/1)
Magika	zip
Reporter	aachum
Tags:	146-103-104-211 Stealc zip

iamaachum

https://182164372183.com/idown.php

Stealc C2: http://146.103.104.211/f999fb4b778f4b7a.php

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOC	ThreatFox Reference
http://146.103.104.211/f999fb4b778f4b7a.php	https://threatfox.abuse.ch/ioc/1685149/

Intelligence

File Origin

# of uploads :

# of downloads :

Origin country :

File Archive Information

This file archive contains 2 file(s), sorted by their relevance:

File name:	WindowsCodecs.dll
File size:	10'691'584 bytes
SHA256 hash:	59bcd32fd2003da92903196294d604047d2fe7384a194a95b4d4e6fc1fe20203
MD5 hash:	7fdd5cd187158d5e471eeaee8918cb47
MIME type:	application/x-dosexec
Signature	Stealc

File name:	ExtractAll.exe
File size:	3'286'680 bytes
SHA256 hash:	3b214fd9774c6d96332e50a501c5e467671b8b504070bbb17e497083b7e282c3
MD5 hash:	53cf9bacc49c034e9e947d75ffab9224
MIME type:	application/x-dosexec
Signature	Stealc

Vendor Threat Intelligence

Details

Link:

https://research.acce.ciphertechsolutions.com/results/d1769f45-0be3-44cf-bbb0-9ae066b84caa/

Verdict:

Malicious

Score:

90.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=690a12f59942f1282ecbf5ee

Tags:

dropper virus blic

Result

Verdict:

Unknown

File Type:

PE File

Link:

https://app.docguard.net/31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136/results/dashboard

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

adaptive-context anti-debug anti-vm evasive explorer fingerprint installer-heuristic lolbin microsoft_visual_cc mpcmdrun packed regedit signed

Link:

https://www.filescan.io/uploads/694aaf3884afa5547b5cdc1a/reports/d839c860-fd44-48c1-8698-ac1a44a8816d/overview

Verdict:

Unknown

Link:

https://www.hybrid-analysis.com/sample/31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136

Result

Verdict:

MALICIOUS

Link:

https://labs.inquest.net/dfi/sha256/31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136

Details

Windows PE Executable

Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.

Verdict:

Malicious

File Type:

zip

First seen:

2025-12-23T12:55:00Z UTC

Last seen:

2025-12-23T16:11:00Z UTC

Hits:

~10

Link:

https://opentip.kaspersky.com/31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136/results?tab=lookup

Score:

73%

Verdict:

Malware

File Type:

Result

Malware family:

stealc

Score:

10/10

Tags:

family:stealc botnet:t1 stealer

Link:

https://tria.ge/reports/251223-t15cwswqgx/

Behaviour

Modifies registry class

Suspicious use of WriteProcessMemory

Enumerates physical storage devices

Suspicious use of SetThreadContext

Stealc

Stealc family

Malware Config

C2 Extraction:

http://146.103.104.211

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

Threat name:

Suspicious File

Score:

0.40

Link:

https://yomi.yoroi.company/submissions/31b9e19854e307d2aad542cdf7094319b0dfc67b3f1da9ae3205fb43a6422136

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:	Check_OutputDebugStringA_iat Create hunting rule

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

Rule name:	DetectEncryptedVariants Create hunting rule
Author:	Zinyth
Description:	Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded

Rule name:	Disable_Defender Create hunting rule
Author:	iam-py-test
Description:	Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen

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

Rule name:	MD5_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for MD5 constants

Rule name:	NET Create hunting rule
Author:	malware-lu

Rule name:	pe_detect_tls_callbacks Create hunting rule

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

Rule name:	RIPEMD160_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for RIPEMD-160 constants

Rule name:	SHA1_Constants Create hunting rule
Author:	phoul (@phoul)
Description:	Look for SHA1 constants

Rule name:	Sus_CMD_Powershell_Usage Create hunting rule
Author:	XiAnzheng
Description:	May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)