MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c. 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 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
SHA3-384 hash: de6f0e1663b4688dc51b94872040240d8e9583c47a982ec9992240d5be1729020f32842ef1108da3ed2cfffbe673c833
SHA1 hash: 93fa651cb180f32a4ed2586b0cc8b9ed3be11e2b
MD5 hash: 045188bade8c7af9746904044a40a479
humanhash: double-delaware-white-winter
File name:buildz.exe
Download: download sample
Signature Stop
Create hunting rule
File size:775'680 bytes
First seen:2024-01-03 00:46:21 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3f4c70baa03792826e2fe054d90d8b62 (1 x Stop, 1 x Tofsee)
ssdeep 12288:F6SBJg1u6wjxTImI/xe2/9NPCkUaIZVvttchXWWg5Yb7PlvFUQLe7e+SOKLJZlr:FnOM6wxImI/Fpqai05nXRXejc7lr
Threatray 2'190 similar samples on MalwareBazaar
TLSH T161F4010135E3C472E3FAA5765431D7B00E77BBA3A933598E5AD817790F286C29E6031B
TrID 46.6% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
25.2% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
8.5% (.EXE) Win64 Executable (generic) (10523/12/4)
5.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon d2b1e4c4ecb9c7f9 (20 x Smoke Loader, 13 x Stealc, 8 x RedLineStealer)
Reporter adm1n_usa32
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
318
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c.exe
Verdict:
Malicious activity
Analysis date:
2024-01-03 01:03:20 UTC
Tags:
loader vodkagats ransomware stop stealer vidar raccoonclipper
Link:
https://app.any.run/tasks/b28eb6b8-f136-4ee3-842c-7a20978ecc95

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Generic-10018191-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
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
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/6594ae86b855eb36930deacd/reports/e52f9e1b-dec2-4313-aa26-170d780c6ff2/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
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/3660cea9-2c6a-42cf-9b78-9859684abf30
Result
Threat name:
Babuk, Clipboard Hijacker, Djvu, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1369094
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 harvest and steal browser information (history, passwords, etc)
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 Babuk Ransomware
Yara detected Clipboard Hijacker
Yara detected Djvu Ransomware
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1369094 Sample: buildz.exe Startdate: 03/01/2024 Architecture: WINDOWS Score: 100 91 zexeq.com 2->91 93 brusuax.com 2->93 95 2 other IPs or domains 2->95 111 Snort IDS alert for network traffic 2->111 113 Multi AV Scanner detection for domain / URL 2->113 115 Found malware configuration 2->115 117 10 other signatures 2->117 13 buildz.exe 2->13         started        16 buildz.exe 2->16         started        18 mstsca.exe 2->18         started        20 5 other processes 2->20 signatures3 process4 signatures5 135 Detected unpacking (changes PE section rights) 13->135 137 Detected unpacking (overwrites its own PE header) 13->137 139 Writes a notice file (html or txt) to demand a ransom 13->139 147 2 other signatures 13->147 22 buildz.exe 1 17 13->22         started        141 Multi AV Scanner detection for dropped file 16->141 143 Machine Learning detection for dropped file 16->143 145 Injects a PE file into a foreign processes 16->145 26 buildz.exe 19 16->26         started        29 mstsca.exe 18->29         started        31 buildz.exe 20->31         started        33 buildz.exe 20->33         started        35 buildz.exe 20->35         started        37 2 other processes 20->37 process6 dnsIp7 97 api.2ip.ua 172.67.139.220, 443, 49699, 49700 CLOUDFLARENETUS United States 22->97 69 C:\Users\user\AppData\Local\...\buildz.exe, PE32 22->69 dropped 39 buildz.exe 22->39         started        42 icacls.exe 22->42         started        71 C:\Users\user\_readme.txt, ASCII 26->71 dropped 73 C:\Users\user\Desktop\LFOPODGVOH.pdf, data 26->73 dropped 75 C:\Users\user\AppData\Local\...\_readme.txt, ASCII 26->75 dropped 131 Modifies existing user documents (likely ransomware behavior) 26->131 44 schtasks.exe 29->44         started        file8 signatures9 process10 signatures11 129 Injects a PE file into a foreign processes 39->129 46 buildz.exe 1 24 39->46         started        51 conhost.exe 44->51         started        process12 dnsIp13 103 zexeq.com 186.13.17.220, 49702, 49703, 49705 TechtelLMDSComunicacionesInteractivasSAAR Argentina 46->103 105 brusuax.com 201.218.66.48, 49704, 80 CableOndaPA Panama 46->105 83 C:\_readme.txt, ASCII 46->83 dropped 85 10f5ef49-b826-4bae...85f.tmp.cdqw (copy), Google 46->85 dropped 87 C:\Users\user\...\acroNGLLog.txt.cdqw (copy), data 46->87 dropped 89 151 other malicious files 46->89 dropped 107 Infects executable files (exe, dll, sys, html) 46->107 109 Modifies existing user documents (likely ransomware behavior) 46->109 53 build2.exe 46->53         started        56 build3.exe 46->56         started        file14 signatures15 process16 signatures17 119 Detected unpacking (changes PE section rights) 53->119 121 Detected unpacking (overwrites its own PE header) 53->121 123 Writes many files with high entropy 53->123 58 build2.exe 53->58         started        125 Uses schtasks.exe or at.exe to add and modify task schedules 56->125 127 Injects a PE file into a foreign processes 56->127 63 build3.exe 56->63         started        process18 dnsIp19 99 t.me 149.154.167.99, 443, 49706 TELEGRAMRU United Kingdom 58->99 101 116.203.123.207, 3001, 49707, 49716 HETZNER-ASDE Germany 58->101 77 C:\Users\user\AppData\...\sqlite3[1].dll, PE32 58->77 dropped 79 C:\Users\...\77EC63BDA74BD0D0E0426DC8F8008506, Microsoft 58->79 dropped 133 Tries to harvest and steal browser information (history, passwords, etc) 58->133 81 C:\Users\user\AppData\Roaming\...\mstsca.exe, PE32 63->81 dropped 65 schtasks.exe 63->65         started        file20 signatures21 process22 process23 67 conhost.exe 65->67         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c/
Threat name:
Win32.Trojan.Smokeloader
Create hunting rule
Status:
Malicious
First seen:
2024-01-03 00:47:07 UTC
File Type:
PE (Exe)
Extracted files:
22
AV detection:
17 of 22 (77.27%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ci77egcr6oy6ch4sqfbpyc2iyafmvmuxdv7hydtx3e3n4giwsiwa._file
Verdict:
malicious
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Stop
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+ 2'180 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/240103-bax7sabgdr/
Behaviour
Creates scheduled task(s)
Modifies system certificate store
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
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Downloads MZ/PE file
Detected Djvu ransomware
Djvu Ransomware
Malware Config
C2 Extraction:
http://zexeq.com/test1/get.php
Unpacked files
SH256 hash:
4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32
MD5 hash:
3eeb7b2030517f91fdf0f4c5278d8e76
SHA1 hash:
c4c3a4650d278f2f8b9bf871c2ae91508ffae165
Detections:
djvu_ransomware
Create hunting rule
win_stop_auto
Create hunting rule
SUSP_XORed_URL_In_EXE
Create hunting rule
MALWARE_Win_STOP
Create hunting rule
Link:
https://www.unpac.me/results/ab503cf2-85cd-49bc-a777-3d1cae174fdc/
Parent samples :
123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
26bd4a40d12d5483b5cf8a0a2db0dddb151b0b3206079dcf2782834482a2c3b7
daa8db2383e3d9fe6cc680385e04fd9aeecee60bc13a4d7c75e55d8d40258d58
9a880d7572486dd985ed6ffbf55eee8875077d9614befc12d5fbdaafd45e86d5
9dfb6b41c90732c9206ef6f65a941b1061126ead69e3715d79519196dad5899c
1c1db50e2876a312fc1b8cf6f3234d157f7accc140b14b47318c735d97693f3b
4ad7b8d228fe32d82b0373ce886f224f47c2e06a59d394c634160c70083b5f32
SH256 hash:
123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c
MD5 hash:
045188bade8c7af9746904044a40a479
SHA1 hash:
93fa651cb180f32a4ed2586b0cc8b9ed3be11e2b
Link:
https://www.unpac.me/results/ab503cf2-85cd-49bc-a777-3d1cae174fdc/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/123ff21851f3/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/123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c

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.

Web download

Stop

Executable exe 123ff21851f3b1e11f928142fc0b48c00acab2971d7e7c0e77d936de1916922c

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2742270/
  
Delivery method
Distributed via web download

Comments