MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6. 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 YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6
SHA3-384 hash: a56547ac1af6962abef036714bfc0e6253c6f8bbb6885c8b3b76f73ca92bd7f205cbb61cf9725401bcdc13da2e5ddac7
SHA1 hash: 19bf962596c73a6d1d2d8c7952bd4f1a33d2c2ad
MD5 hash: 7782d89e92bdf29d8d677b74054da26b
humanhash: colorado-bravo-grey-princess
File name:81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6
Download: download sample
Signature Stop
Create hunting rule
File size:799'232 bytes
First seen:2021-09-13 06:39:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3cf7934f6b854bd488143a7d36a97eea (3 x RedLineStealer, 2 x ArkeiStealer, 1 x Stop)
ssdeep 24576:WNwhLXq22mCKoWnOEbNGsobLI9ouN+aIF9s4:u22mCKo6OIGPqjYx9s4
Threatray 608 similar samples on MalwareBazaar
TLSH T11C05F120B6D0C435E1A731F469BBC3AC642879F0EB6470C772C62AAF66356E49C31797
dhash icon d824e790c4e72158 (30 x RaccoonStealer, 18 x RedLineStealer, 16 x Smoke Loader)
Reporter JAMESWT_WT
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6
Verdict:
Suspicious activity
Analysis date:
2021-09-13 06:56:26 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c16abb98-3ea8-4c56-8643-37c34f75cb52

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/187230/
Detection(s):
Win.Malware.Generic-9886820-0
Create hunting rule

Win.Malware.Generic-9886821-0
Create hunting rule

Win.Malware.Generic-9886944-0
Create hunting rule

Win.Malware.Generic-9887080-0
Create hunting rule

Win.Malware.Generic-9887161-0
Create hunting rule

Win.Malware.Generic-9887162-0
Create hunting rule

Win.Malware.Generic-9887168-0
Create hunting rule

Win.Malware.Generic-9887556-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/6174fafedb358dd15ed914cb/reports/1c2ea910-a9f4-49f9-8288-747c04cfab97/overview
Malware family:
STOP Ransomware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d336a987-8d00-4e49-beb4-b97fc2913402
Result
Threat name:
Djvu Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/850002
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes many files with high entropy
Yara detected Djvu Ransomware
Yara detected Vidar
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 482434 Sample: DZz5X5kGnI Startdate: 13/09/2021 Architecture: WINDOWS Score: 100 38 gheorghip.tumblr.com 74.114.154.22, 443, 49745 AUTOMATTICUS Canada 2->38 40 162.55.179.90, 49747, 80 ACPCA United States 2->40 42 api.2ip.ua 2->42 56 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->56 58 Antivirus detection for URL or domain 2->58 60 Antivirus detection for dropped file 2->60 62 9 other signatures 2->62 9 DZz5X5kGnI.exe 2->9         started        12 DZz5X5kGnI.exe 2->12         started        signatures3 process4 signatures5 64 Detected unpacking (changes PE section rights) 9->64 66 Contains functionality to inject code into remote processes 9->66 68 Writes many files with high entropy 9->68 14 DZz5X5kGnI.exe 1 16 9->14         started        70 Injects a PE file into a foreign processes 12->70 process6 dnsIp7 50 api.2ip.ua 77.123.139.190, 443, 49737, 49738 VOLIA-ASUA Ukraine 14->50 52 192.168.2.1 unknown unknown 14->52 36 C:\Users\...\DZz5X5kGnI.exe:Zone.Identifier, ASCII 14->36 dropped 18 DZz5X5kGnI.exe 14->18         started        21 icacls.exe 14->21         started        file8 process9 signatures10 54 Injects a PE file into a foreign processes 18->54 23 DZz5X5kGnI.exe 1 20 18->23         started        process11 dnsIp12 44 securebiz.org 211.168.197.211, 49739, 80 LGDACOMLGDACOMCorporationKR Korea Republic of 23->44 46 astdg.top 23->46 48 api.2ip.ua 23->48 28 C:\Users\user\...\settingssynonyms.txt, COM 23->28 dropped 30 C__Windows_SystemA...he_Desktop_6[1].txt, COM 23->30 dropped 32 C__Windows_SystemA...e_Desktop_25[1].txt, DOS 23->32 dropped 34 331 other files (321 malicious) 23->34 dropped 72 Modifies existing user documents (likely ransomware behavior) 23->72 file13 signatures14
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6/
Threat name:
Win32.Ransomware.StopCrypt
Create hunting rule
Status:
Malicious
First seen:
2021-08-19 14:21:35 UTC
File Type:
PE (Exe)
Extracted files:
32
AV detection:
38 of 45 (84.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qhe2xpzm2uxkcrw5lacok24c2e6xnznavd63vnszzvrjizqlplda._file
Verdict:
malicious
Similar samples:
0c1571e0f22ecc1c3ed2b80ee90df329d820e287ac0be834aa905726ea96887e
Stop
3f1cb37f9e4a7e8e91106f2ee4b11176544068edbe076e0ba83ff7623da7d7a6
Stop
5651c726a433d942eb9cdbe74c6631178fa3e243e0953e0a55f54f1752e05682
Stop
5d232ce70bfdc3344ad9c117da898e5d72ea5a5ff0704933735abb186714c9f4
Stop
6383ff13552cae01943bfbf91be1943527818c968d475ae3922095dd3120af39
Stop
adc2c80f4a9f969a641f2674c94bd576420b34d338b12ba5b4cab09e6c51a466
Stop
b3ad13f776f60df12ef17cf20772f823a78941ba1d7ccd7e32d290ac7b3f9e7a
Stop
+ 598 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:517 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/210913-he9jyadaf6/
Behaviour
Checks processor information in registry
Delays execution with timeout.exe
Kills process with taskkill
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
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
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Vidar Stealer
Detected Djvu ransomware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
https://gheorghip.tumblr.com/
Unpacked files
SH256 hash:
4580e62c1de80a1dc7e0117123e27ee037497748c4d69cc3f741d2a7e2a904cc
MD5 hash:
32dcd958a4932403c46da0764b69378b
SHA1 hash:
82e34d8dd50a9cca0224b36d05d414a47f4eb68b
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/7972c29b-eb5c-43b1-9eda-354768a767bc/
Parent samples :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 hash:
81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6
MD5 hash:
7782d89e92bdf29d8d677b74054da26b
SHA1 hash:
19bf962596c73a6d1d2d8c7952bd4f1a33d2c2ad
Link:
https://www.unpac.me/results/7972c29b-eb5c-43b1-9eda-354768a767bc/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/81c9abbf2cd5/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/81c9abbf2cd52ea146dd5804e56b82d13d76e5a0a8fdbab659cd6294660b7ac6

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
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.

Cape
Cape
https://www.capesandbox.com/analysis/187230/

Comments