MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5. 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

Vidar

Vendor detections: 15

Intelligence 15 IOCs YARA 23 File information Comments

SHA256 hash:	44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5
SHA3-384 hash:	e68e0997efe4a1240d9d6a88020dd93f185441288ad72d77dcfaa56cba13d8b2cb9417a94d318891b2dbcb3701167143
SHA1 hash:	32e9fedeee51660cd468674c7fd2bb61680ade4d
MD5 hash:	47b60b25ab7dde94cf02db35ebaa9f27
humanhash:	chicken-double-sodium-timing
File name:	Bootstrapper.exe
Download:	download sample
Signature	Vidar Create hunting rule
File size:	5'060'760 bytes
First seen:	2025-11-28 20:06:21 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	d42595b695fc008ef2c56aabd8efd68e (1'386 x Vidar, 331 x RemusStealer, 134 x Stealc)
ssdeep	49152:gzrKllVajMeJpiGzfrrOqdZipwfRtvkVdCKJXx1Vw4ElW74KmLsemSbCbIwtCcuI:giIfJpiyr7NGhGGF9jkwFt
TLSH	T1DF3629167981CB99DCB9C23BE99271457A7178540B7D37C70E8036A62E3A7C80D3EB1E
TrID	44.4% (.EXE) Win64 Executable (generic) (10522/11/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika	pebin
dhash icon	030fd40b030303c0 (1 x Vidar)
Reporter	burger
Tags:	exe signed Stealc vidar

Code Signing Certificate

Organisation:	true.com
Issuer:	Amazon RSA 2048 M04
Algorithm:	sha256WithRSAEncryption
Valid from:	2025-11-03T00:00:00Z
Valid to:	2026-12-01T23:59:59Z
Serial number:	05fb41597b7f72a74d686d90d5d6a66c
Intelligence:	18 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:	SHA256
Thumbprint:	ce8ddf9a34af79753e45c4cf6604e85a330c9f5608de19782187c605fde16e5c
Source:	This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin

# of uploads :

# of downloads :

103

Origin country :

Vendor Threat Intelligence

No detections

Malware family:

vidar

ID:

File name:

Bootstrapper.exe

Verdict:

Malicious activity

Analysis date:

2025-11-28 17:41:18 UTC

Tags:

sfuzuan stealer stealc vidar xor-url generic golang

Link:

https://app.any.run/tasks/833f8800-112c-46f2-9666-34651afded5e

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/41732/

Verdict:

Malicious

Score:

99.9%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6929debd6657e3433281e39f

Tags:

dridex emotet cobalt

Result

Verdict:

Clean

Maliciousness:

Behaviour

Сreating synchronization primitives

Connecting to a non-recommended domain

Connection attempt

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

adaptive-context anti-vm golang signed

Link:

https://www.filescan.io/uploads/692a00f1efb205635358a9c3/reports/9fb6b18b-abd4-4be0-b64e-9857fc9e2fe5/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_70%

Link:

https://www.hybrid-analysis.com/sample/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5

Verdict:

Malicious

File Type:

exe x64

First seen:

2025-11-28T15:03:00Z UTC

Last seen:

2025-11-30T08:55:00Z UTC

Hits:

~100

Detections:

Trojan-PSW.Stealerc.TCP.C&C Trojan-PSW.Stealerc.HTTP.C&C Trojan.Win64.Agent.smeyuo Trojan.Win64.Agent.sb PDM:Trojan.Win32.Generic VHO:Trojan-PSW.Win32.Vidar.gen UDS:DangerousObject.Multi.Generic Trojan-PSW.Vidar.HTTP.C&C

Link:

https://opentip.kaspersky.com/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5/results?tab=lookup

Verdict:

Suspicious

Link:

https://analyze.intezer.com/analyses/db1f4c94-0a98-4559-81ff-e669c99275e9

Result

Threat name:

Vidar

Detection:

malicious

Classification:

troj.spyw.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1822470

Signature

Allocates memory in foreign processes

Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)

Contains functionality to inject threads in other processes

Creates a thread in another existing process (thread injection)

Injects a PE file into a foreign processes

Joe Sandbox ML detected suspicious sample

Multi AV Scanner detection for submitted file

Suricata IDS alerts for network traffic

Tries to harvest and steal browser information (history, passwords, etc)

Unusual module load detection (module proxying)

Writes to foreign memory regions

Yara detected Vidar stealer

Behaviour

Behavior Graph:

Download SVG

Score:

73%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5

Verdict:

inconclusive

YARA:

4 match(es)

Tags:

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

Link:

https://app.malva.re/file/47b60b25ab7dde94cf02db35ebaa9f27

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5/

Verdict:

Malicious

Threat:

Family.STEALC

Link:

https://tip.neiki.dev/file/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5

Threat name:

Win64.Spyware.Vidar

Status:

Suspicious

First seen:

2025-11-28 17:41:19 UTC

File Type:

PE+ (Exe)

Extracted files:

AV detection:

15 of 37 (40.54%)

Threat level:

2/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=ithpxlxix3uepame64vcw6ixvbpetdxupnopg5egoggq7vsxyhkq._file

Result

Malware family:

vidar

Score:

10/10

Tags:

family:vidar botnet:dba8f4e22e3ebf229dfdaa5f77c7ee03 discovery spyware stealer

Link:

https://tria.ge/reports/251128-yv23sshq8v/

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

Enumerates physical storage devices

Drops file in Windows directory

Checks installed software on the system

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Detects Vidar Stealer

Vidar

Vidar family

Verdict:

Malicious

Tags:

Stealc

YARA:

n/a

Link:

https://app.threat.zone/submission/b2c95d2e-1018-4fb7-9eb6-2264be82bd31

Unpacked files

SH256 hash:

44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5

MD5 hash:

47b60b25ab7dde94cf02db35ebaa9f27

SHA1 hash:

32e9fedeee51660cd468674c7fd2bb61680ade4d

Link:

https://www.unpac.me/results/6e6f54fc-1a03-4be0-9bb0-7b06ca45260b/

Malware family:

Vidar

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/44cefbaee8be/report/overview.html

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

Threat name:

Legit

Score:

0.00

Link:

https://yomi.yoroi.company/submissions/44cefbaee8bee8478184f72a2b7917a85e498ef47b5cf37486718d0fd657c1d5

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

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

Rule name:	DebuggerCheck__RemoteAPI 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:	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:	dgaagas Create hunting rule
Author:	Harshit
Description:	Uses certutil.exe to download a file named test.txt

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_duffcopy_amd64 Create hunting rule

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:	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)

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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape

https://www.capesandbox.com/analysis/41732/

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