MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8b1d2efc246be5617f9ec94289401bc6f12b9ac8d3b84bb2a7fea34b0e0bf13. 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: 12


Intelligence 12 IOCs 1 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8b1d2efc246be5617f9ec94289401bc6f12b9ac8d3b84bb2a7fea34b0e0bf13
SHA3-384 hash: 93770da7cdf992308ef87dd4d2b1701d6da524dabfcea5c45c458aeab4327283ec153bf726b638ab276c16c4a5d48fe3
SHA1 hash: 1c7e084bbde236121c627d6a596de239ccfcc8b1
MD5 hash: bf10027fffd5ac8908867af9d6aea89f
humanhash: fix-nebraska-triple-lemon
File name:bf10027fffd5ac8908867af9d6aea89f.exe
Download: download sample
Signature Stop
Create hunting rule
File size:732'672 bytes
First seen:2022-08-20 05:20:29 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f03c917c6bbf10fd1de261e899998ef8 (2 x Stop)
ssdeep 12288:xcSqYoiu/k+k+yMDCVqxaJqgj2+Ac+q7wVPs+fKg/za5mriV8QiJ:fAiu/k+k+yJqkJFSHqs0+yg/GKZ
TLSH T15DF412B07581C431D49C56304436DFB8293EBD615A389AA77794FB1E7E312C22EBA21F
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 38b078cccacecc43 (14 x Smoke Loader, 7 x Stop, 5 x ArkeiStealer)
Reporter abuse_ch
Tags:exe Stop


Avatar
abuse_ch
Stop C2:
http://78.46.129.14/

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://78.46.129.14/ https://threatfox.abuse.ch/ioc/844093/

Intelligence

File Origin
# of uploads :
1
# of downloads :
343
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bf10027fffd5ac8908867af9d6aea89f.exe
Verdict:
Malicious activity
Analysis date:
2022-08-20 05:23:08 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ccae0192-e74c-4d12-8762-0bbae6a828fc

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/299859/
Detection(s):
Win.Malware.Pwsx-9963559-0
Create hunting rule

Win.Malware.Dropperx-9964028-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
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
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/63006f3f6416782f7945ad1c/reports/b4dcb393-3ccc-4d02-a1d1-393f82bb1aa8/overview
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/6940c4ac-f267-478f-8296-5a12d87d3187
Result
Threat name:
Djvu, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1054691
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
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
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: 687205 Sample: GvjdCbl5gF.exe Startdate: 20/08/2022 Architecture: WINDOWS Score: 100 85 Snort IDS alert for network traffic 2->85 87 Multi AV Scanner detection for domain / URL 2->87 89 Malicious sample detected (through community Yara rule) 2->89 91 10 other signatures 2->91 10 GvjdCbl5gF.exe 2->10         started        13 GvjdCbl5gF.exe 2->13         started        15 GvjdCbl5gF.exe 2->15         started        17 GvjdCbl5gF.exe 2->17         started        process3 signatures4 105 Writes many files with high entropy 10->105 107 Injects a PE file into a foreign processes 10->107 19 GvjdCbl5gF.exe 1 16 10->19         started        23 GvjdCbl5gF.exe 16 13->23         started        26 GvjdCbl5gF.exe 15->26         started        28 GvjdCbl5gF.exe 17->28         started        process5 dnsIp6 67 api.2ip.ua 162.0.217.254, 443, 49717, 49722 ACPCA Canada 19->67 47 C:\Users\...behaviorgraphvjdCbl5gF.exe:Zone.Identifier, ASCII 19->47 dropped 49 C:\Users\user\AppData\...behaviorgraphvjdCbl5gF.exe, MS-DOS 19->49 dropped 30 GvjdCbl5gF.exe 19->30         started        33 icacls.exe 19->33         started        69 31.166.90.88, 49726, 80 MOBILY-ASEtihadEtisalatCompanyMobilySA Saudi Arabia 23->69 71 acacaca.org 23->71 73 192.168.2.1 unknown unknown 23->73 51 C:\Users\user\...\ChromeSetup.exe.qqlo (copy), MS-DOS 23->51 dropped 53 C:\Users\user\Downloads\ChromeSetup.exe, MS-DOS 23->53 dropped 55 C:\Users\user\Desktop\...\VWDFPKGDUF.docx, data 23->55 dropped 57 C:\Users\user\Desktop\AQRFEVRTGL.docx, data 23->57 dropped 95 Modifies existing user documents (likely ransomware behavior) 23->95 file7 signatures8 process9 signatures10 115 Injects a PE file into a foreign processes 30->115 35 GvjdCbl5gF.exe 1 21 30->35         started        process11 dnsIp12 75 acacaca.org 222.236.49.124, 49725, 49727, 80 SKB-ASSKBroadbandCoLtdKR Korea Republic of 35->75 77 rgyui.top 2.91.189.3, 49723, 80 SAUDINETSTC-ASSA Saudi Arabia 35->77 79 api.2ip.ua 35->79 59 C:\Users\user\AppData\Local\...\build2[1].exe, PE32 35->59 dropped 61 C:\Users\user\AppData\Local\...\build2.exe, PE32 35->61 dropped 63 C:\_readme.txt, ASCII 35->63 dropped 65 32 other files (30 malicious) 35->65 dropped 93 Modifies existing user documents (likely ransomware behavior) 35->93 40 build2.exe 35->40         started        file13 signatures14 process15 signatures16 97 Multi AV Scanner detection for dropped file 40->97 99 Detected unpacking (creates a PE file in dynamic memory) 40->99 101 Machine Learning detection for dropped file 40->101 103 Injects a PE file into a foreign processes 40->103 43 build2.exe 40->43         started        process17 dnsIp18 81 t.me 149.154.167.99, 443, 49729 TELEGRAMRU United Kingdom 43->81 83 78.46.129.14, 49730, 80 HETZNER-ASDE Germany 43->83 109 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 43->109 111 Tries to harvest and steal browser information (history, passwords, etc) 43->111 113 Tries to steal Crypto Currency Wallets 43->113 signatures19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8b1d2efc246be5617f9ec94289401bc6f12b9ac8d3b84bb2a7fea34b0e0bf13/
Threat name:
Win32.Ransomware.Stop
Create hunting rule
Status:
Malicious
First seen:
2022-08-16 01:34:17 UTC
File Type:
PE (Exe)
Extracted files:
34
AV detection:
32 of 40 (80.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vcy5f36ci27fmf7z5skcrfabxrxrfonmru5yjozkp7vdjmhax4jq._file
Result
Malware family:
djvu
Create hunting rule
Score:
  10/10
Tags:
family:djvu discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/220820-f1zkrahhc2/
Behaviour
Checks processor information in registry
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
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/fhsgtsspen6/get.php
Unpacked files
SH256 hash:
23bb733d92eb0db62bf45486c8ede9f794282233f228fc9f0d30c8d58e8fe91b
MD5 hash:
55e6668c9a8afd326641d1fb2ee0f571
SHA1 hash:
8688db1dc3ba2426c5ebaa0ee64e7e05320ca576
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/b18d1443-5217-4282-a8ad-c9d84bea2bec/
Parent samples :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 hash:
a8b1d2efc246be5617f9ec94289401bc6f12b9ac8d3b84bb2a7fea34b0e0bf13
MD5 hash:
bf10027fffd5ac8908867af9d6aea89f
SHA1 hash:
1c7e084bbde236121c627d6a596de239ccfcc8b1
Link:
https://www.unpac.me/results/b18d1443-5217-4282-a8ad-c9d84bea2bec/
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/a8b1d2efc246be5617f9ec94289401bc6f12b9ac8d3b84bb2a7fea34b0e0bf13

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.
Rule name:win_vidar_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.vidar.

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/299859/

Comments