MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84. 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


Stop


Vendor detections: 17


Intelligence 17 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84
SHA3-384 hash: e6f8485400a24207c6c8b26cb25ff63d4ff71080e6da7659a1e66afde004b0a99997d94e98ee36115c69541c596ace96
SHA1 hash: ef5fb1c1a3831aa8ec7afae9d29507aa1cffaa31
MD5 hash: 373fc49121ee4992363a62911ff1728a
humanhash: july-batman-alaska-muppet
File name:gayn
Download: download sample
Signature Stop
Create hunting rule
File size:756'224 bytes
First seen:2023-07-11 09:25:38 UTC
Last seen:2023-07-11 10:42:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 15ebf67abb27d44912527463f0610891 (2 x RedLineStealer, 2 x Stop, 1 x Smoke Loader)
ssdeep 12288:hRSITlOl4ZJl/MnpJSGt31gkplPHpOtlumjZiuDh1+eiB+:7ol0l/MnPS+plPMtczuo
Threatray 1 similar samples on MalwareBazaar
TLSH T171F4020265E8FE61D9E54A368D2EF2E877DEF8718D186B57320C7F2B19B0162C5A3311
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0001004812301413 (1 x Stop)
Reporter pcrisk
Tags:djvu exe gayn Stop


Avatar
pcrisk
Djvu (Gayn) Ransomware

Intelligence

File Origin
# of uploads :
2
# of downloads :
315
Origin country :
LT LT
Vendor Threat Intelligence
Malware family:
arkei
Create hunting rule
ID:
1
File name:
gayn
Verdict:
Malicious activity
Analysis date:
2023-07-11 09:27:14 UTC
Tags:
loader arkei
Link:
https://app.any.run/tasks/33352997-e7dc-40ab-97bf-b421af44500f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
STOP
Create hunting rule
Link:
https://www.capesandbox.com/analysis/415435/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Sending an HTTP GET request
Сreating synchronization primitives
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Query of malicious DNS domain
Sending a TCP request to an infection source
Result
Malware family:
n/a
Score:
  9/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/97116/overview
Behaviour
MalwareBazaar
SystemUptime
MeasuringTime
CPUID_Instruction
EvasionGetTickCount
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/64ad202bb1d2dc145c1c414d/reports/cf5569e8-8d2b-4b56-8f8c-05468b984a48/overview
Verdict:
Malicious
Labled as:
Zusy.Generic
Link:
https://www.hybrid-analysis.com/sample/a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/df260a98-b778-4300-8ded-ca900bec5c06
Result
Threat name:
Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1270734
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Malicious
First seen:
2023-07-11 02:08:47 UTC
File Type:
PE (Exe)
Extracted files:
36
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uszzkoup3pxg7tfkhqsyi7b5vbphruzto7tt427l4p7j2afe32ca._file
Verdict:
malicious
Similar samples:
7d9f9ac8d7abaa23ad0b96893d9e9bc7996e3b8bffb997ea5609d59d00438a8a
Stop
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:https://t.me/eagl3z discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/230711-ld6y7sga59/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses 2FA software files, possible credential harvesting
Accesses cryptocurrency files/wallets, possible credential harvesting
Adds Run key to start application
Checks installed software on the system
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Detected Djvu ransomware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
http://zexeq.com/raud/get.php
https://t.me/eagl3z
https://steamcommunity.com/profiles/76561199159550234
Unpacked files
SH256 hash:
857104156aa4da841ae31c6491bc6256d21939bcecf70e67c5d0fcfb748ba2eb
MD5 hash:
49407b6f44a5f4188b374fe0c32b99dd
SHA1 hash:
490d7ae6e0992f3babbeb8989ac9aa6e6c773c9c
Detections:
djvu_ransomware
Create hunting rule
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/2a0b5bf5-177a-425c-b440-f5ee8e835278/
Parent samples :
a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84
6a9a99a1a7186ff8a18bda16208904a1408f534ed188cd053db9a4ce98f66642
SH256 hash:
a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84
MD5 hash:
373fc49121ee4992363a62911ff1728a
SHA1 hash:
ef5fb1c1a3831aa8ec7afae9d29507aa1cffaa31
Link:
https://www.unpac.me/results/2a0b5bf5-177a-425c-b440-f5ee8e835278/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a4b3953a8fdb/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:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Ransomware_Stop_1e8d48ff
Create hunting rule
Author:Elastic Security
Rule name:win_stop_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.stop.

File information

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

Web download

Stop

Executable exe a4b3953a8fdbee6fccaa3c25847c3da85e78d33377e73e6bebe3fe9d00a4de84

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2635570/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/415435/

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