MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d. 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: 17


Intelligence 17 IOCs YARA 13 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
SHA3-384 hash: 4d11e689d62b191424566c4ec76a7ee50fa2b8759255914a08072b2ceae1cf976dfa6376d74879e156f0b78f11678ba8
SHA1 hash: 9eac9cb63bd1db25d8dd939ddeeaddb2b31c5487
MD5 hash: 1fb4633d2956759c7c43e054eb5f5028
humanhash: failed-blossom-nuts-seventeen
File name:file
Download: download sample
Signature Stop
Create hunting rule
File size:738'816 bytes
First seen:2023-11-14 08:14:14 UTC
Last seen:2023-11-15 16:52:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b9f69a119dfb935d85204ae1d9e63436 (3 x MarsStealer, 2 x Glupteba, 1 x Smoke Loader)
ssdeep 12288:mYcQK5iBgANulzSzhRddhzaxp7EGiCBlp8cf26/X6/Q0Mi+CNjkfxN:s5iBzNYsnddpaxp7EGiW6026/XuMi+yg
Threatray 2'205 similar samples on MalwareBazaar
TLSH T1CDF4E11392E07DD5F9658B738E1FD6ECB70DF6109E69BF2922198A2F04B11B2D163312
TrID 45.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.4% (.EXE) Win64 Executable (generic) (10523/12/4)
9.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.6% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 1404050328281000 (1 x Stop)
Reporter andretavare5
Tags:exe Stop


Avatar
andretavare5
Sample downloaded from https://vk.com/doc278414724_666757499?hash=d6gvX1aBVVkzgVcgEVL66i8OqzuUx7f7V0oGSWSnD2P&dl=7S43bsTH5P4tz2z5N3rVCZV8wo1WDAJhfVHg5lHCQCD&api=1&no_preview=1#test22

Intelligence

File Origin
# of uploads :
17
# of downloads :
324
Origin country :
US US
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-11-14 08:15:28 UTC
Tags:
ransomware stop
Link:
https://app.any.run/tasks/fb96b8b6-e118-4515-869f-c52d4eaa870f

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/458443/
Detection(s):
Win.Packer.pkr_ce1a-9980177-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Creating a process with a hidden window
Adding an access-denied ACE
Сreating synchronization primitives
Sending an HTTP GET request
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
Gathering data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/65532c88a71b82df0a7c03ba/reports/74c5aa31-4ea3-41f1-9bc1-94e6f8e13aa9/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
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/11340baa-c0f3-44b6-8e2e-25e07a74b432
Result
Threat name:
Babuk, Djvu
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1342158
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
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 detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes a notice file (html or txt) to demand a ransom
Writes many files with high entropy
Yara detected Babuk Ransomware
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1342158 Sample: file.exe Startdate: 14/11/2023 Architecture: WINDOWS Score: 100 51 zexeq.com 2->51 53 api.2ip.ua 2->53 59 Snort IDS alert for network traffic 2->59 61 Multi AV Scanner detection for domain / URL 2->61 63 Found malware configuration 2->63 65 8 other signatures 2->65 9 file.exe 2->9         started        12 file.exe 2->12         started        14 file.exe 2->14         started        16 file.exe 2->16         started        signatures3 process4 signatures5 75 Detected unpacking (changes PE section rights) 9->75 77 Detected unpacking (overwrites its own PE header) 9->77 79 Writes a notice file (html or txt) to demand a ransom 9->79 87 2 other signatures 9->87 18 file.exe 1 17 9->18         started        81 Multi AV Scanner detection for dropped file 12->81 83 Machine Learning detection for dropped file 12->83 85 Injects a PE file into a foreign processes 12->85 22 file.exe 14 12->22         started        25 file.exe 13 14->25         started        27 file.exe 16->27         started        process6 dnsIp7 55 api.2ip.ua 172.67.139.220, 443, 49729, 49730 CLOUDFLARENETUS United States 18->55 39 C:\Users\user\AppData\Local\...\file.exe, PE32 18->39 dropped 29 file.exe 18->29         started        32 icacls.exe 18->32         started        41 C:\Users\user\Desktop\KATAXZVCPS.jpg, data 22->41 dropped 73 Modifies existing user documents (likely ransomware behavior) 22->73 file8 signatures9 process10 signatures11 89 Injects a PE file into a foreign processes 29->89 34 file.exe 1 21 29->34         started        process12 dnsIp13 57 zexeq.com 195.158.3.162, 49732, 49733, 80 BRM-ASUZ Uzbekistan 34->57 43 C:\_readme.txt, ASCII 34->43 dropped 45 C:\Users\user\_readme.txt, ASCII 34->45 dropped 47 C:\Users\user\AppData\...\ls-archive.sqlite, data 34->47 dropped 49 61 other malicious files 34->49 dropped 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 34->67 69 Infects executable files (exe, dll, sys, html) 34->69 71 Modifies existing user documents (likely ransomware behavior) 34->71 file14 signatures15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Malicious
First seen:
2023-11-12 17:27:02 UTC
File Type:
PE (Exe)
Extracted files:
38
AV detection:
20 of 23 (86.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=55cjaymgkgtwxrghuvcltcx5hptxetkji5qboajhkicqjxremawq._file
Verdict:
malicious
Similar samples:
2831300675369e6ac5d928446186f83bedc4027fe6db617039e5b224258ed0b6
Stop
35ba91ddf0d41590d0de137bc1d6e5524d8a84ecfabdae793e6b3a499f2c67d4
Stop
6a455892dc6b808ff4f012010f20ad4bbf16b881b9c235d98c85565591289012
Stop
83c4c80adbeb1d8411e49c1d14a886af6a26c9fb9827d8852d4e45e4a5f09b17
Stop
a0038a7651f4408728f4a8c7a2abe43b237fc9dc6645fa34e5c4d9c212658878
Stop
b299675e7e4654beadcaa2c38a96bf8324bbde96904ede17fdd88ebb7fdf2748
Stop
d46fec4abba46efe6663f19c2d9963a612f4ff25023c0dc6fc5bb559f106859d
Stop
+ 2'195 additional samples on MalwareBazaar
Result
Malware family:
djvu
Create hunting rule
Score:
  10/10
Tags:
family:djvu discovery persistence ransomware
Link:
https://tria.ge/reports/231114-j5kh6saa75/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Modifies file permissions
Detected Djvu ransomware
Djvu Ransomware
Malware Config
C2 Extraction:
http://zexeq.com/test2/get.php
Unpacked files
SH256 hash:
b928d59326a0154591a5848aa7a5dd46936cc0729ef144ac02f44400db67936e
MD5 hash:
a5f02dffb6e90fadf780db79ca85a1d1
SHA1 hash:
c858666d4f927196e10053de75f284b92b112b10
Detections:
djvu_ransomware
Create hunting rule
win_stop_auto
Create hunting rule
SUSP_XORed_URL_In_EXE
Create hunting rule
Link:
https://www.unpac.me/results/96fbbb67-a529-4b17-a6d1-91a1a465a6f5/
Parent samples :
0504a2f7684bc88a0944072331f0a6ba8becc9c5979c83121f6a15e8aa53dac0
ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
SH256 hash:
ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d
MD5 hash:
1fb4633d2956759c7c43e054eb5f5028
SHA1 hash:
9eac9cb63bd1db25d8dd939ddeeaddb2b31c5487
Link:
https://www.unpac.me/results/96fbbb67-a529-4b17-a6d1-91a1a465a6f5/
Malware family:
STOP
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef4490618651/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/ef4490618651a76bc4c7a544b98afd3be7724d494760170127520504de24602d

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
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.

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/458443/

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