MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d. 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: 13


Intelligence 13 IOCs 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d
SHA3-384 hash: 7bb25f04f5dc93a54f36a12fea1e83524c1d2d25c936dce9713a8b5324ff5f32f360285207464eff5094026ba7e69152
SHA1 hash: 10492535ba5c73134310edc991e1cce5cc496ae9
MD5 hash: b928a3c483047a757995aeb4bd856fb8
humanhash: batman-neptune-sweet-minnesota
File name:b928a3c483047a757995aeb4bd856fb8.exe
Download: download sample
Signature Stop
Create hunting rule
File size:879'616 bytes
First seen:2022-08-04 15:30:36 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1d9196a0fbe7a3975fb92886459e6566 (2 x Stop)
ssdeep 12288:fm4wdHfnLK+jIdK7tbS/yjga2Rn3wxge8WZYKKAEG1LK5vU+HO68GD4XyraP+k+r:O9nX0474Oga2BcgcYhZVBHgGcZmwlQ
TLSH T181150140B7A0C03DF4B211F8BD7682A8B53E3EA15B2554CB62D92AEE16346E0FC75357
TrID 40.5% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
17.0% (.SCR) Windows screen saver (13101/52/3)
13.6% (.EXE) Win64 Executable (generic) (10523/12/4)
8.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon b6dacabecee6baa6 (72 x Stop, 68 x RedLineStealer, 55 x Smoke Loader)
Reporter abuse_ch
Tags:exe Stop


Avatar
abuse_ch
Stop C2:
http://116.202.183.213:1080/

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://116.202.183.213:1080/ https://threatfox.abuse.ch/ioc/841373/

Intelligence

File Origin
# of uploads :
1
# of downloads :
471
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b928a3c483047a757995aeb4bd856fb8.exe
Verdict:
Malicious activity
Analysis date:
2022-08-04 15:33:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/595274fd-cf7e-4ba8-bbf3-51c8a1bcd894

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/296519/
Detection(s):
Win.Packed.Crypterx-9954995-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Sending a custom TCP request
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Сreating synchronization primitives
Deleting a recently created file
Searching for synchronization primitives
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Enabling autorun by creating a file
Sending an HTTP GET request to an infection source
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware lockbit packed wacatac
Link:
https://www.filescan.io/uploads/62ebe6af5c07b66577f9b17f/reports/5d0d71e4-44e2-41b5-83d0-fb6550ab2b88/overview
Result
Verdict:
UNKNOWN
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/e223c2dd-f98d-45ab-8ef7-61190aac8d41
Result
Threat name:
Djvu, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1046361
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (creates a PE file in dynamic memory)
Found many strings related to Crypto-Wallets (likely being stolen)
Found ransom note / readme
Infects executable files (exe, dll, sys, html)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Crypto Currency Wallets
Uses known network protocols on non-standard ports
Writes many files with high entropy
Yara detected Djvu Ransomware
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 678854 Sample: 7C2P2CKtTz.exe Startdate: 04/08/2022 Architecture: WINDOWS Score: 100 70 Snort IDS alert for network traffic 2->70 72 Multi AV Scanner detection for domain / URL 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 10 other signatures 2->76 10 7C2P2CKtTz.exe 2->10         started        13 7C2P2CKtTz.exe 2->13         started        15 7C2P2CKtTz.exe 2->15         started        17 7C2P2CKtTz.exe 2->17         started        process3 signatures4 90 Writes many files with high entropy 10->90 92 Injects a PE file into a foreign processes 10->92 19 7C2P2CKtTz.exe 1 16 10->19         started        23 7C2P2CKtTz.exe 12 13->23         started        25 7C2P2CKtTz.exe 12 15->25         started        27 7C2P2CKtTz.exe 17->27         started        process5 dnsIp6 64 api.2ip.ua 162.0.217.254, 443, 49764, 49765 ACPCA Canada 19->64 54 C:\Users\...\7C2P2CKtTz.exe:Zone.Identifier, ASCII 19->54 dropped 56 C:\Users\user\AppData\...\7C2P2CKtTz.exe, MS-DOS 19->56 dropped 29 7C2P2CKtTz.exe 19->29         started        32 icacls.exe 19->32         started        file7 process8 signatures9 100 Injects a PE file into a foreign processes 29->100 34 7C2P2CKtTz.exe 1 22 29->34         started        process10 dnsIp11 58 acacaca.org 187.233.12.151, 49766, 49768, 80 UninetSAdeCVMX Mexico 34->58 60 rgyui.top 109.102.255.230, 49767, 80 RTDBucharestRomaniaRO Romania 34->60 62 2 other IPs or domains 34->62 46 C:\Users\user\AppData\Local\...\build2[1].exe, PE32 34->46 dropped 48 C:\Users\user\AppData\Local\...\build2.exe, PE32 34->48 dropped 50 C:\_readme.txt, ASCII 34->50 dropped 52 54 other files (37 malicious) 34->52 dropped 78 Infects executable files (exe, dll, sys, html) 34->78 80 Modifies existing user documents (likely ransomware behavior) 34->80 39 build2.exe 34->39         started        file12 signatures13 process14 signatures15 82 Multi AV Scanner detection for dropped file 39->82 84 Detected unpacking (creates a PE file in dynamic memory) 39->84 86 Machine Learning detection for dropped file 39->86 88 Injects a PE file into a foreign processes 39->88 42 build2.exe 39->42         started        process16 dnsIp17 66 t.me 149.154.167.99, 443, 49771 TELEGRAMRU United Kingdom 42->66 68 116.202.183.213, 1080, 49772 HETZNER-ASDE Germany 42->68 94 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 42->94 96 Tries to harvest and steal browser information (history, passwords, etc) 42->96 98 Tries to steal Crypto Currency Wallets 42->98 signatures18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2022-08-04 15:31:09 UTC
File Type:
PE (Exe)
Extracted files:
43
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ue3662oddtfrnncosvvutjytmg4k2uganwblkcadei43k43hp5gq._file
Verdict:
malicious
Result
Malware family:
djvu
Create hunting rule
Score:
  10/10
Tags:
family:djvu discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/220804-sx11magdc7/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in System32 directory
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
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Detected Djvu ransomware
Djvu Ransomware
Malware Config
C2 Extraction:
http://acacaca.org/test2/get.php
Unpacked files
SH256 hash:
793df5eba531861660a3be8dde96001b9993a40a0d11a8ebcaadf8b58c72e75b
MD5 hash:
b14efbd2d64673f33a7ac28c484b0548
SHA1 hash:
af101e33eb3deb9306c70c79ddbc6e3964150801
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/6a073bca-ff8a-4675-89d9-aadcb822bdbb/
Parent samples :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 hash:
a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d
MD5 hash:
b928a3c483047a757995aeb4bd856fb8
SHA1 hash:
10492535ba5c73134310edc991e1cce5cc496ae9
Link:
https://www.unpac.me/results/6a073bca-ff8a-4675-89d9-aadcb822bdbb/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a137ef69c31c/report/overview.html
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/a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d

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:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
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: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 a137ef69c31ccb16b44e956b49a71361b8ad50c06d82b508032239b573677f4d

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2261263/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/296519/

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