MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56. 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: 18


Intelligence 18 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56
SHA3-384 hash: ec778c4e79defdf11fdd3abb03ec16c4d59c59f43fa0c2a4b03b0a9c7ec4cea49938754941f302d739585938cc65874a
SHA1 hash: a7e6f71eecdbfbeacce3d5d92164e443dbaa25f6
MD5 hash: 62306f785eef4d8c33b4afd2c2f8b23d
humanhash: pluto-delaware-carolina-oklahoma
File name:file.exe
Download: download sample
Signature Stop
Create hunting rule
File size:790'528 bytes
First seen:2023-06-04 00:35:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 9bbc9ec767e0d044dbe137327e0459fd (4 x Stop, 2 x TeamBot, 2 x ArkeiStealer)
ssdeep 12288:wdfVY349jM7auTjDz7XiO9kIuFUs4zeq27sSyYS+HLJ8tRFvSLhPn+Jc3BsrrbkA:wd+46Nv7XxkIRrSyILaFY5n4mBsfb
Threatray 1'935 similar samples on MalwareBazaar
TLSH T1F6F4E113A2D37C61E5165AB28E2E82E46A1DFFA18F5737DF23146E1F04721E1C672B42
TrID 37.3% (.EXE) Win64 Executable (generic) (10523/12/4)
17.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
16.0% (.EXE) Win32 Executable (generic) (4505/5/1)
7.3% (.ICL) Windows Icons Library (generic) (2059/9)
7.2% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon d184940041435200 (1 x Stop)
Reporter Chainskilabs
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
278
Origin country :
US US
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
file.exe
Verdict:
Malicious activity
Analysis date:
2023-06-04 00:37:28 UTC
Tags:
ransomware stop stealer vidar trojan loader arkei
Link:
https://app.any.run/tasks/187c90d1-2532-4560-a800-9f8ef0a897f1

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/395384/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.67365094.1248.27692.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending an HTTP GET 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
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Sending an HTTP GET request to an infection source
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/89290/overview
Behaviour
MalwareBazaar
MeasuringTime
SystemUptime
CheckCmdLine
EvasionQueryPerformanceCounter
EvasionGetTickCount
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/647bdc735c0d2b9e7f9ca119/reports/e9a41e62-e955-45f4-a10f-5cfbd029c2e7/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56
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/1297ae4b-7456-4c0e-a48f-dc9e32fa3048
Result
Threat name:
Clipboard Hijacker, Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1248302
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to inject code into remote processes
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Found ransom note / readme
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected Clipboard Hijacker
Yara detected Djvu Ransomware
Yara detected ZipBomb
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 881322 Sample: file.exe Startdate: 04/06/2023 Architecture: WINDOWS Score: 100 78 Snort IDS alert for network traffic 2->78 80 Found malware configuration 2->80 82 Malicious sample detected (through community Yara rule) 2->82 84 9 other signatures 2->84 11 file.exe 2->11         started        14 file.exe 2->14         started        16 file.exe 2->16         started        18 2 other processes 2->18 process3 signatures4 88 Detected unpacking (changes PE section rights) 11->88 90 Detected unpacking (overwrites its own PE header) 11->90 92 Writes a notice file (html or txt) to demand a ransom 11->92 96 2 other signatures 11->96 20 file.exe 1 16 11->20         started        94 Injects a PE file into a foreign processes 14->94 24 file.exe 12 14->24         started        26 file.exe 16->26         started        28 file.exe 18->28         started        30 schtasks.exe 18->30         started        process5 dnsIp6 66 api.2ip.ua 162.0.217.254, 443, 49694, 49695 ACPCA Canada 20->66 52 C:\Users\user\AppData\Local\...\file.exe, PE32 20->52 dropped 54 C:\Users\user\...\file.exe:Zone.Identifier, ASCII 20->54 dropped 32 file.exe 20->32         started        35 icacls.exe 20->35         started        68 192.168.2.1 unknown unknown 26->68 37 conhost.exe 30->37         started        file7 process8 signatures9 76 Injects a PE file into a foreign processes 32->76 39 file.exe 1 25 32->39         started        process10 dnsIp11 70 colisumy.com 210.182.29.70, 49697, 80 LGDACOMLGDACOMCorporationKR Korea Republic of 39->70 72 zexeq.com 211.119.84.111, 49696, 49699, 80 LGDACOMLGDACOMCorporationKR Korea Republic of 39->72 74 api.2ip.ua 39->74 56 C:\Users\user\AppData\Local\...\build3[1].exe, PE32 39->56 dropped 58 C:\Users\user\AppData\Local\...\build2[1].exe, PE32 39->58 dropped 60 C:\_readme.txt, ASCII 39->60 dropped 62 291 other files (192 malicious) 39->62 dropped 86 Modifies existing user documents (likely ransomware behavior) 39->86 44 build3.exe 39->44         started        file12 signatures13 process14 file15 64 C:\Users\user\AppData\Roaming\...\mstsca.exe, PE32 44->64 dropped 98 Uses schtasks.exe or at.exe to add and modify task schedules 44->98 48 schtasks.exe 44->48         started        signatures16 process17 process18 50 conhost.exe 48->50         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56/
Threat name:
Win32.Trojan.Krypter
Create hunting rule
Status:
Malicious
First seen:
2023-06-03 17:48:27 UTC
File Type:
PE (Exe)
Extracted files:
49
AV detection:
26 of 37 (70.27%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vsd7vn5l33hw3op6ydaal3354feqykroyfpiq54h5yet3mfuvrla._file
Verdict:
malicious
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+ 1'925 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:77a63e71a10ee1d81a28b5c866b75922 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/230604-axxn4aba6z/
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/test1/get.php
https://steamcommunity.com/profiles/76561199510444991
https://t.me/task4manager
Unpacked files
SH256 hash:
8c737e3c6c4d7c80b016b2a63dd93b72d2c9035a9f8f9dec95b97bfcdcfac756
MD5 hash:
5f4e2c2548d03592958e2aecb6292336
SHA1 hash:
8b3feacac8eefd663cea24d1e952e44ae3536072
Detections:
djvu_ransomware
Create hunting rule
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/c8e97c73-671b-4a68-be9f-918ec508f0eb/
Parent samples :
5036a028da048199de157009be3ef9fbdbd6345388ef16fd4a8b6da54eee38db
328a7672a582ef7f93a64325b0f80b30887a49d51a94a61de73f4c53cfe9054d
a8b4798a94d1cc98b0ec6c1db7dced9a6000c85aaf9361da45747b6cc10adb23
959218473693d550912d906d2fc3d09f98c2a19dc7e5a09a09fb932c7fa25c3c
ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56
d6421e6c85be648c18ff4ae6efeeded3b389f151027d052f156ff6fefc1c3bd4
8bcf576fd6d74fd51de30459eb0b40ae1e7743fef04034444113c81c44059e92
SH256 hash:
ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56
MD5 hash:
62306f785eef4d8c33b4afd2c2f8b23d
SHA1 hash:
a7e6f71eecdbfbeacce3d5d92164e443dbaa25f6
Link:
https://www.unpac.me/results/c8e97c73-671b-4a68-be9f-918ec508f0eb/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ac87fab7abde/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/ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56

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 ac87fab7abdecf6db9fec0c005ef7de1490c2a2ec15e887787ee093db0b4ac56

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2615181/
Cape
Cape
https://www.capesandbox.com/analysis/395384/

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