MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5a48be903282ba1f15a03f73c6ff55e070bf7ac1bdfa60e436090a1ceb2d12a3. 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: 16


Intelligence 16 IOCs YARA 6 File information Comments

SHA256 hash: 5a48be903282ba1f15a03f73c6ff55e070bf7ac1bdfa60e436090a1ceb2d12a3
SHA3-384 hash: c77cb678d0cd929dce14a092ef035b79aef8ce41ea68a2d9b3775bc862efb3da70f7593929527476142dc6ff8db9f7df
SHA1 hash: 4f9a1b41cf9cb305deb7291d40b9b1b956a3bcbd
MD5 hash: 1c427725498bb3ab7b117dcc5ca66a25
humanhash: cold-lake-quiet-hot
File name:1c427725498bb3ab7b117dcc5ca66a25.exe
Download: download sample
Signature Stop
File size:797'696 bytes
First seen:2023-03-02 12:01:04 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0f8de239eb0453698a5eb1819d70ef21 (4 x RedLineStealer, 2 x Stop, 1 x LaplasClipper)
ssdeep 12288:tfKoVxUE0o2+HUQlbdJm2TsJwqjUm8vcGgX8t80ww2d2UlqupwC:0oLX0o1e2YKOg7gX8t8x2YqG
Threatray 1'314 similar samples on MalwareBazaar
TLSH T1440523233D92C031C89F8274D920EFA13EF7BC29527586A337546BEE1D725825A6732D
TrID 60.4% (.EXE) InstallShield setup (43053/19/16)
14.7% (.EXE) Win64 Executable (generic) (10523/12/4)
7.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.8% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 183070e8e8c8c804 (1 x Stop)
Reporter abuse_ch
Tags:exe Stop


Avatar
abuse_ch
Stop C2:
http://zexeq.com/test1/get.php

Intelligence


File Origin
# of uploads :
1
# of downloads :
211
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
ID:
1
File name:
1c427725498bb3ab7b117dcc5ca66a25.exe
Verdict:
Malicious activity
Analysis date:
2023-03-02 12:01:42 UTC
Tags:
installer ransomware stop

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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
DNS request
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
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware lockbit packed
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
Verdict:
Malicious
Result
Threat name:
Clipboard Hijacker, Djvu, Vidar
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
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 ransom note / readme
Infects executable files (exe, dll, sys, html)
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Tries to steal Mail credentials (via file / registry access)
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 Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 818547 Sample: s2k4Vuu2Ig.exe Startdate: 02/03/2023 Architecture: WINDOWS Score: 100 92 Snort IDS alert for network traffic 2->92 94 Multi AV Scanner detection for domain / URL 2->94 96 Malicious sample detected (through community Yara rule) 2->96 98 10 other signatures 2->98 11 s2k4Vuu2Ig.exe 2->11         started        14 s2k4Vuu2Ig.exe 2->14         started        16 s2k4Vuu2Ig.exe 2->16         started        18 mstsca.exe 2->18         started        process3 signatures4 112 Detected unpacking (changes PE section rights) 11->112 114 Detected unpacking (overwrites its own PE header) 11->114 116 Writes a notice file (html or txt) to demand a ransom 11->116 118 Writes many files with high entropy 11->118 20 s2k4Vuu2Ig.exe 1 16 11->20         started        120 Injects a PE file into a foreign processes 14->120 24 s2k4Vuu2Ig.exe 12 14->24         started        26 s2k4Vuu2Ig.exe 16->26         started        28 schtasks.exe 18->28         started        process5 dnsIp6 76 api.2ip.ua 162.0.217.254, 443, 49708, 49709 ACPCA Canada 20->76 58 C:\Users\...\s2k4Vuu2Ig.exe:Zone.Identifier, ASCII 20->58 dropped 60 C:\Users\user\AppData\...\s2k4Vuu2Ig.exe, MS-DOS 20->60 dropped 30 s2k4Vuu2Ig.exe 20->30         started        33 icacls.exe 20->33         started        35 conhost.exe 28->35         started        file7 process8 signatures9 122 Injects a PE file into a foreign processes 30->122 37 s2k4Vuu2Ig.exe 1 25 30->37         started        process10 dnsIp11 78 zexeq.com 175.120.254.9, 49711, 49715, 80 SKB-ASSKBroadbandCoLtdKR Korea Republic of 37->78 80 uaery.top 195.158.3.162, 49710, 80 BRM-ASUZ Uzbekistan 37->80 82 api.2ip.ua 37->82 62 StartUnifiedTileMo...che.dat.gosw (copy), DOS 37->62 dropped 64 C:\Users\...\StartUnifiedTileModelCache.dat, DOS 37->64 dropped 66 C:\Users\user\AppData\Local\...\build3[1].exe, PE32 37->66 dropped 68 136 other malicious files 37->68 dropped 100 Infects executable files (exe, dll, sys, html) 37->100 102 Modifies existing user documents (likely ransomware behavior) 37->102 42 build2.exe 37->42         started        45 build3.exe 37->45         started        file12 signatures13 process14 file15 104 Detected unpacking (changes PE section rights) 42->104 106 Detected unpacking (overwrites its own PE header) 42->106 108 Injects a PE file into a foreign processes 42->108 48 build2.exe 42->48         started        70 C:\Users\user\AppData\Roaming\...\mstsca.exe, PE32 45->70 dropped 110 Uses schtasks.exe or at.exe to add and modify task schedules 45->110 52 schtasks.exe 45->52         started        signatures16 process17 dnsIp18 72 t.me 149.154.167.99, 443, 49716 TELEGRAMRU United Kingdom 48->72 74 78.46.235.109, 49717, 80 HETZNER-ASDE Germany 48->74 84 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 48->84 86 Tries to steal Mail credentials (via file / registry access) 48->86 88 Tries to harvest and steal browser information (history, passwords, etc) 48->88 90 Tries to steal Crypto Currency Wallets 48->90 54 WerFault.exe 48->54         started        56 conhost.exe 52->56         started        signatures19 process20
Threat name:
Win32.Trojan.SmokeLoader
Status:
Malicious
First seen:
2023-03-02 12:02:08 UTC
File Type:
PE (Exe)
Extracted files:
20
AV detection:
20 of 25 (80.00%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:djvu family:vidar discovery persistence ransomware spyware stealer
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
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
Unpacked files
SH256 hash:
972eb4052d36c783ef0f725d4ba3b0c8a822fec2594120a0bde331f02cb20574
MD5 hash:
1fb2cc1369ab08f1717c9c5ee2658e4b
SHA1 hash:
d6fa4ac861827fcc3d6c35ac0b461f2448a7654d
Detections:
win_stop_auto
SH256 hash:
5a48be903282ba1f15a03f73c6ff55e070bf7ac1bdfa60e436090a1ceb2d12a3
MD5 hash:
1c427725498bb3ab7b117dcc5ca66a25
SHA1 hash:
4f9a1b41cf9cb305deb7291d40b9b1b956a3bcbd
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
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:pdb_YARAify
Author:@wowabiy314
Description:PDB
Rule name:SUSP_XORed_URL_in_EXE
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
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Ransomware_Stop_1e8d48ff
Author:Elastic Security
Rule name:win_stop_auto
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 5a48be903282ba1f15a03f73c6ff55e070bf7ac1bdfa60e436090a1ceb2d12a3

(this sample)

  
Delivery method
Distributed via web download

Comments