MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8. 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

GoStealer

Vendor detections: 11

Intelligence 11 IOCs YARA 24 File information Comments

SHA256 hash:	91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8
SHA3-384 hash:	b8d2489aaa2b1eb34e60f1c4e2136cb43bf71b706828f3694b9cd9f00a44d4a953a578185fe6e9c1d8f9881a1c10a04e
SHA1 hash:	89f0b5f15eb6ba2e73a9aed0d04637aac5933a19
MD5 hash:	5dd54b7b9e3f0c1255d41931e322d044
humanhash:	rugby-eighteen-salami-lamp
File name:	file
Download:	download sample
Signature	GoStealer Create hunting rule
File size:	1'992'320 bytes
First seen:	2026-05-25 09:31:01 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	ebc247a77b4d4a804b261f97a1fd075c (91 x Vidar, 26 x Smoke Loader, 20 x RemusStealer)
ssdeep	24576:Z/F9OuIDDewoAd5x6pHQpTMv4k1YoUHiKvefwKQrMtPO5Aj8m:Z/FwzDDewoA7xTpTMwkaomHvef5Qr15+
TLSH	T1D8956B1ABCD408F6C0AA63328DB762827BB5BC480F3263D72E90B6782E736D55D75750
TrID	33.1% (.EXE) Win64 Executable (generic) (6522/11/2) 25.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 10.4% (.ICL) Windows Icons Library (generic) (2059/9) 10.3% (.EXE) OS/2 Executable (generic) (2029/13) 10.1% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
Reporter	Bitsight
Tags:	54e64e dropped-by-amadey exe GOStealer signed

Code Signing Certificate

Organisation:	me.muz.li
Issuer:	R13
Algorithm:	sha256WithRSAEncryption
Valid from:	2026-05-07T19:29:00Z
Valid to:	2026-08-05T19:28:59Z
Serial number:	056db75ad9aa9bd0a6fe9c044afcc9b07cb5
Intelligence:	15 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:	SHA256
Thumbprint:	358cc1474fdd86a73d5380150b7b6323d8ca9019a19e952d901e8a1e58d62afc
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Bitsight

url: http://91.92.242.236/files-129312398/files/file_3b6e258854bc5270.exe

Intelligence

File Origin

# of uploads :

# of downloads :

135

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

n/a

ID:

File name:

_91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8.exe

Verdict:

Malicious activity

Analysis date:

2026-05-25 09:34:03 UTC

Tags:

stealer golang

Link:

https://app.any.run/tasks/bf0b27c6-6058-40d0-934c-03257a26a5ca

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/67842/

Detection(s):

SecuriteInfo.com.Win64.Evo-gen.65438451.UNOFFICIAL

Verdict:

Malicious

Score:

97.4%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6a1416f55d76862ef947a057

Tags:

injection obfusc crypt

Result

Verdict:

Malware

Maliciousness:

Behaviour

Сreating synchronization primitives

Behavior that indicates a threat

DNS request

Connection attempt

Sending a custom TCP request

Reading critical registry keys

Stealing user critical data

Verdict:

Unknown

Threat level:

2.5/10

Confidence:

100%

Tags:

adaptive-context anti-vm crypto golang signed

Link:

https://www.filescan.io/uploads/6a1416f0ed770578157dd7a9/reports/a129dd1e-f382-4495-ba54-685ee0d34d25/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_70%

Link:

https://www.hybrid-analysis.com/sample/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8

Verdict:

Malicious

File Type:

exe x64

First seen:

2026-05-25T06:39:00Z UTC

Last seen:

2026-05-27T05:44:00Z UTC

Hits:

~10

Detections:

HEUR:Trojan.Win32.Agentb.gen Backdoor.Win64.Gsb.sb Backdoor.Win64.Gsb.gen

Link:

https://opentip.kaspersky.com/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8/results?tab=lookup

Verdict:

Unknown

Link:

https://analyze.intezer.com/analyses/551d8af3-70d2-44c7-9989-f76ef0f46403

Score:

98%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

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

Link:

https://app.malva.re/file/5dd54b7b9e3f0c1255d41931e322d044

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8/

Verdict:

Malicious

Threat:

Backdoor.Win64.Gsb

Link:

https://tip.neiki.dev/file/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8

Threat name:

Win64.Trojan.Egairtigado

Status:

Malicious

First seen:

2026-05-25 09:31:46 UTC

File Type:

PE+ (Exe)

AV detection:

19 of 24 (79.17%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=shcr6yidxftew4h5x6rcgqax3cparclsvkyl6573jel7il3tqp4a._file

Result

Malware family:

n/a

Score:

7/10

Tags:

discovery spyware stealer

Link:

https://tria.ge/reports/260525-lhafsscx4l/

Behaviour

Checks processor information in registry

Enumerates system info in registry

Modifies data under HKEY_USERS

Modifies registry class

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary

Suspicious use of AdjustPrivilegeToken

Suspicious use of FindShellTrayWindow

Suspicious use of WriteProcessMemory

Browser Information Discovery

System Time Discovery

Drops file in Windows directory

Suspicious use of NtSetInformationThreadHideFromDebugger

Reads user/profile data of web browsers

Unpacked files

SH256 hash:

91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8

MD5 hash:

5dd54b7b9e3f0c1255d41931e322d044

SHA1 hash:

89f0b5f15eb6ba2e73a9aed0d04637aac5933a19

Link:

https://www.unpac.me/results/d1932e42-ebb3-49f9-9ac1-2b0e04593c02/

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

Threat name:

Malicious File

Score:

1.00

Link:

https://yomi.yoroi.company/submissions/91c51f6103b9664b70fdbfa2234017d89e088972aab0bf77fb4917f42f7383f8

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:	BunnyLoader Create hunting rule
Author:	indest
Description:	generic crypto/card stealer rule

Rule name:	command_and_control Create hunting rule
Author:	CD_R0M_
Description:	This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group

Rule name:	CP_Script_Inject_Detector Create hunting rule
Author:	DiegoAnalytics
Description:	Detects attempts to inject code into another process across PE, ELF, Mach-O binaries

Rule name:	DebuggerException__SetConsoleCtrl 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:	DetectGoMethodSignatures Create hunting rule
Author:	Wyatt Tauber
Description:	Detects Go method signatures in unpacked Go binaries

Rule name:	Detect_Go_GOMAXPROCS Create hunting rule
Author:	Obscurity Labs LLC
Description:	Detects Go binaries by the presence of runtime.GOMAXPROCS in the runtime metadata

Rule name:	GoBinTest Create hunting rule

Rule name:	golang Create hunting rule

Rule name:	Golangmalware Create hunting rule
Author:	Dhanunjaya
Description:	Malware in Golang

Rule name:	golang_binary_string Create hunting rule
Description:	Golang strings present

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

Rule name:	Golang_Find_CSC846 Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	Golang_Find_CSC846_Simple Create hunting rule
Author:	Ashar Siddiqui
Description:	Find Go Signatuers

Rule name:	HiveRansomware Create hunting rule
Author:	Dhanunjaya
Description:	Yara Rule To Detect Hive V4 Ransomware

Rule name:	PE_Digital_Certificate Create hunting rule
Author:	albertzsigovits

Rule name:	ProgramLanguage_Golang Create hunting rule
Author:	albertzsigovits
Description:	Application written in Golang programming language

Rule name:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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

Rule name:	Suspicious_Golang_Binary Create hunting rule
Author:	Tim Machac
Description:	Triage: Golang-compiled binary with suspicious OS/persistence/network strings (not family-specific)

Rule name:	telebot_framework Create hunting rule
Author:	vietdx.mb

Rule name:	TelegramAPIMalware_PowerShell_EXE Create hunting rule
Author:	@polygonben
Description:	Hunting for pwsh malware using Telegram for C2

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

Rule name:	VECT_Ransomware Create hunting rule
Author:	Mustafa Bakhit
Description:	Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.