MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0. 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: 15


Intelligence 15 IOCs YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0
SHA3-384 hash: 92769097dee62ded55dd01b6cec8e871700b2ef301c7ccb1ef67c339c719f7c8c084cd3b1786c3cedaf2cecf1199d9df
SHA1 hash: baac8c060e10b07135be92bade587e41f365130f
MD5 hash: 6517eac6500c18918de0da21afa41b8e
humanhash: pennsylvania-cup-autumn-eight
File name:installer.exe
Download: download sample
Signature Stop
Create hunting rule
File size:709'632 bytes
First seen:2023-03-16 14:51:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7241dd2f12f20ebdc822f614957cd389 (2 x Smoke Loader, 1 x Stop)
ssdeep 12288:JU6MTD17EulsvEiyItSLVs+XS/G3nbQwdg4i8/42kQBUicFQnUo8rdxD/s:0lErHtJ+8GXbQJ12riXo8J2
TLSH T161E40102DBAD7D10E1670A325E5FF2F4761EF451AE1AFB6D2208962F4CB0261C8637D6
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 916a6e6a6a6a6a68 (3 x Smoke Loader, 2 x Tofsee, 1 x Vidar)
Reporter Chainskilabs
Tags:exe Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
222
Origin country :
US US
Vendor Threat Intelligence
Malware family:
stop
Create hunting rule
ID:
1
File name:
installer.exe
Verdict:
Malicious activity
Analysis date:
2023-03-16 14:52:04 UTC
Tags:
ransomware stop
Link:
https://app.any.run/tasks/bd120fc0-5356-4431-a2f9-c8ab34c60f5b

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/374797/
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:
No Threat
Threat level:
  2/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/64132d13da1bbe29caf8c1c9/reports/1a234bc8-5692-4ba5-88dc-0b8eb50f0709/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3b338090-ce12-465d-8669-ee0e60ac04f2
Result
Threat name:
Babuk, Clipboard Hijacker, Djvu, Vidar
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1195100
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
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 Babuk Ransomware
Yara detected Clipboard Hijacker
Yara detected Djvu Ransomware
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 828001 Sample: installer.exe Startdate: 16/03/2023 Architecture: WINDOWS Score: 100 83 Snort IDS alert for network traffic 2->83 85 Malicious sample detected (through community Yara rule) 2->85 87 Antivirus detection for URL or domain 2->87 89 9 other signatures 2->89 13 installer.exe 2->13         started        16 mstsca.exe 2->16         started        18 installer.exe 2->18         started        process3 signatures4 101 Detected unpacking (changes PE section rights) 13->101 103 Detected unpacking (overwrites its own PE header) 13->103 105 Writes a notice file (html or txt) to demand a ransom 13->105 107 2 other signatures 13->107 20 installer.exe 1 16 13->20         started        24 schtasks.exe 16->24         started        process5 dnsIp6 77 api.2ip.ua 162.0.217.254, 443, 49708, 49711 ACPCA Canada 20->77 65 C:\Users\...\installer.exe:Zone.Identifier, ASCII 20->65 dropped 67 C:\Users\user\AppData\Local\...\installer.exe, MS-DOS 20->67 dropped 26 installer.exe 20->26         started        29 icacls.exe 20->29         started        31 conhost.exe 24->31         started        file7 process8 signatures9 99 Injects a PE file into a foreign processes 26->99 33 installer.exe 1 25 26->33         started        process10 dnsIp11 71 uaery.top 138.36.3.134, 49712, 80 TEXNETSERVICOSDECOMUNICACAOEMINFORMATICALTDBR Brazil 33->71 73 zexeq.com 86.122.83.142, 49713, 49714, 80 RCS-RDS73-75DrStaicoviciRO Romania 33->73 75 api.2ip.ua 33->75 57 C:\Users\user\AppData\Local\...\build3[1].exe, PE32 33->57 dropped 59 C:\Users\user\AppData\Local\...\build2[1].exe, PE32 33->59 dropped 61 C:\_readme.txt, ASCII 33->61 dropped 63 115 other malicious files 33->63 dropped 91 Modifies existing user documents (likely ransomware behavior) 33->91 38 build2.exe 33->38         started        41 build3.exe 33->41         started        file12 signatures13 process14 file15 93 Detected unpacking (changes PE section rights) 38->93 95 Detected unpacking (overwrites its own PE header) 38->95 44 build2.exe 12 38->44         started        69 C:\Users\user\AppData\Roaming\...\mstsca.exe, PE32 41->69 dropped 97 Uses schtasks.exe or at.exe to add and modify task schedules 41->97 47 schtasks.exe 41->47         started        signatures16 process17 dnsIp18 79 t.me 149.154.167.99, 443, 49715 TELEGRAMRU United Kingdom 44->79 81 195.201.255.32, 49716, 80 HETZNER-ASDE Germany 44->81 49 WerFault.exe 44->49         started        51 conhost.exe 47->51         started        process19 process20 53 MpCmdRun.exe 51->53         started        process21 55 conhost.exe 53->55         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0/
Threat name:
Win32.Trojan.Vidar
Create hunting rule
Status:
Malicious
First seen:
2023-03-16 10:05:19 UTC
File Type:
PE (Exe)
Extracted files:
36
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iuq3634ifad33oymr5pqitaucwsuhywkev7k2nx3ubggu6iz43aa._file
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:d6ef050131e7d5a1d595c51613328971 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/230316-r8qhladf5s/
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 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
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/test2/get.php
https://t.me/zaskullz
https://steamcommunity.com/profiles/76561199486572327
http://135.181.87.234:80
Unpacked files
SH256 hash:
fd397d3fe36fba71e823826d20d5172e3a931897a6c29792d4daab4addead614
MD5 hash:
8c1cb32901a4c1555453ea57e1fcef7a
SHA1 hash:
15540c07a3525edf88577ebe9ad6bd21aa74c188
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/0f27d328-8cc3-437c-83d4-ae619adfce5b/
Parent samples :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 hash:
4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0
MD5 hash:
6517eac6500c18918de0da21afa41b8e
SHA1 hash:
baac8c060e10b07135be92bade587e41f365130f
Link:
https://www.unpac.me/results/0f27d328-8cc3-437c-83d4-ae619adfce5b/
Malware family:
Djvu
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4521bf6f8828/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/4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:MALWARE_Win_STOP
Create hunting rule
Author:ditekSHen
Description:Detects STOP ransomware
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
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 4521bf6f882807bdbb0c8f5f044c1415a543e2ca257ead36fba04c6a7919e6c0

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/374797/

Comments