MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6. 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: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6
SHA3-384 hash: 15b785ed82dc3f23e3323381f14a0cb34fae8aae07d1c898bcd7a4106648801d46f0ccfc9bdc9f8f845b577b1c8bfa3b
SHA1 hash: 59b1a93ddc3bec17a484a294fbdd0696550a25ef
MD5 hash: 13c23cbf373b0460e1b150be9d334941
humanhash: florida-green-table-bluebird
File name:13c23cbf373b0460e1b150be9d334941.exe
Download: download sample
Signature Stop
Create hunting rule
File size:830'464 bytes
First seen:2021-10-19 13:30:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 0f7b69b762e9586196f1df5c0f15d6fa (2 x RedLineStealer, 1 x Stop, 1 x Smoke Loader)
ssdeep 24576:fQ3vrROFYQECxciXJmkPfvw3Y2EVh3csEv:fSvrROFuCTJm+0/Gh3cs
Threatray 792 similar samples on MalwareBazaar
TLSH T16D050270B2B0C476DAB505308C29C7A55D79B859EE20F9D733F8AB2E2E7164C16E270D
File icon (PE):PE icon
dhash icon fcfcb4d4d4d4d8c0 (70 x RedLineStealer, 59 x RaccoonStealer, 24 x Smoke Loader)
Reporter abuse_ch
Tags:exe Ransomware Stop

Intelligence

File Origin
# of uploads :
1
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/198508/
Detection(s):
SecuriteInfo.com.W32.AIDetect.malware1.15874.30507.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
DNS request
Connection attempt
Sending a custom TCP request
Creating a file
Connection attempt to an infection source
Sending an HTTP GET request to an infection source
Sending an HTTP GET request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware packed
Link:
https://www.filescan.io/uploads/616ec8989a5a1e91c5c674b0/reports/68f45bde-92fa-4984-b792-217a696b9550/overview
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.
Gathering data
Result
Threat name:
Djvu
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Detection:
malicious
Classification:
rans.troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/873140
Signature
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 dropped file
Machine Learning detection for sample
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Djvu Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 505568 Sample: A3W3SaLX0z.exe Startdate: 19/10/2021 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 Found ransom note / readme 2->58 60 3 other signatures 2->60 8 A3W3SaLX0z.exe 2->8         started        11 A3W3SaLX0z.exe 2->11         started        13 A3W3SaLX0z.exe 2->13         started        15 A3W3SaLX0z.exe 2->15         started        process3 signatures4 64 Detected unpacking (changes PE section rights) 8->64 66 Detected unpacking (overwrites its own PE header) 8->66 68 Contains functionality to inject code into remote processes 8->68 17 A3W3SaLX0z.exe 1 17 8->17         started        70 Injects a PE file into a foreign processes 11->70 21 A3W3SaLX0z.exe 1 19 11->21         started        72 Multi AV Scanner detection for dropped file 13->72 74 Machine Learning detection for dropped file 13->74 24 A3W3SaLX0z.exe 13 13->24         started        26 A3W3SaLX0z.exe 13 15->26         started        process5 dnsIp6 48 api.2ip.ua 77.123.139.190, 443, 49738, 49739 VOLIA-ASUA Ukraine 17->48 36 C:\Users\user\AppData\...\A3W3SaLX0z.exe, PE32 17->36 dropped 38 C:\Users\...\A3W3SaLX0z.exe:Zone.Identifier, ASCII 17->38 dropped 28 A3W3SaLX0z.exe 17->28         started        31 icacls.exe 17->31         started        50 rlrz.org 190.218.32.60, 49744, 80 CableOndaPA Panama 21->50 40 C:\Users\user\_readme.txt, ASCII 21->40 dropped 42 C:\Users\user\Desktop\...42VWZAPQSQL.pdf, data 21->42 dropped 44 C:\Users\user\Desktop44VWZAPQSQL.pdf, data 21->44 dropped 46 3 other malicious files 21->46 dropped 62 Modifies existing user documents (likely ransomware behavior) 21->62 file7 signatures8 process9 signatures10 76 Injects a PE file into a foreign processes 28->76 33 A3W3SaLX0z.exe 13 28->33         started        process11 dnsIp12 52 api.2ip.ua 33->52
Detection:
vidar
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Link:
https://mwdb.cert.pl/sample/43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6/
Threat name:
Win32.Ransomware.StopCrypt
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Status:
Malicious
First seen:
2021-10-19 06:51:09 UTC
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=iozr5j27hqdgmur257at4ilkmupi5e76v37rczolgxwtoq3fzxla._file
Verdict:
malicious
Similar samples:
08f290d886e67c9aaa4cf058fa166e50efc8181901773373c2123e5290edab71
Stop
0a644c28fba57280abf3226ace12e8aa12f284f78485423b7c358ed29f515167
Stop
1662a370129d1175bb6064da3b8080158ebe848ab34e433c67e93d4f3481b148
Stop
4bf131758e42addbad951bafa566adc56c2c60be43ea1f48ac00e5f7e528ef5b
Stop
55e262d517e470787760c984868f07d582f8d8efd9ff98db0870c48c9a51c23d
Stop
96888e3f86a786d67fe5d2df9f5d195721ec70de964fb1467a263eaa2a9c80bd
Stop
b0fd3e3432bc5f36f5d532b01164d97f6ed579bd693b98f8954ed0df0a2a9839
Stop
c3ade1984ff9031d528776a359b03e496cecb26c332bd826465eef2da60f41b1
Stop
ef883b1302fd39664bf7ef489ddac6ae0a4e09be8f46d5c975a127174d0d9c34
Stop
f15e2ae6168ce22adfb50ee1838cfda69a046b13dc8a5a751379a71ceb76b650
Stop
+ 782 additional samples on MalwareBazaar
Result
Malware family:
vidar
Create hunting rule
Score:
  10/10
Tags:
family:djvu family:vidar botnet:517 discovery persistence ransomware spyware stealer
Link:
https://tria.ge/reports/211019-qsdcnafhc2/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Delays execution with timeout.exe
Kills process with taskkill
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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
Loads dropped DLL
Modifies file permissions
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Vidar Stealer
Detected Djvu ransomware
Djvu Ransomware
Vidar
Malware Config
C2 Extraction:
https://mas.to/@oleg98
http://rlrz.org/lancer
Unpacked files
SH256 hash:
e58c1b9788a7e1f15a484e99c7c45493d501c61a376c598617da0742975b6faa
MD5 hash:
bf5fbe667db11ae9665b0c96dea2382f
SHA1 hash:
4362cbf4e1332f94f8afeda50334671d977aa253
Detections:
win_stop_auto
Create hunting rule
Link:
https://www.unpac.me/results/18e0904e-cad3-45ff-ab1a-c3d1ac1449a7/
Parent samples :
43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6
aad6294207c2facfebf440fa5d52804422edbf9c9e9adb4a7aaff0310b1c5d11
4b3e6a191ab050a87aeeb8a650290c4e217e9508971beeb929417d13d89292e2
SH256 hash:
43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6
MD5 hash:
13c23cbf373b0460e1b150be9d334941
SHA1 hash:
59b1a93ddc3bec17a484a294fbdd0696550a25ef
Link:
https://www.unpac.me/results/18e0904e-cad3-45ff-ab1a-c3d1ac1449a7/
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/43b31ea75f3c0666523aefc13e216a651e8e93feaeff1165cb35ed374365cdd6

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
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Author:ditekSHen
Description:Detects STOP ransomware
Rule name:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth
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: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.

Cape
Cape
https://www.capesandbox.com/analysis/198508/

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