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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8f5a6d4e7058dde1ab46efd1497b6d49e702d2d627a5cdef9a71a0e7ff40dcb8. 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


Vjw0rm


Vendor detections: 7


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

SHA256 hash: 8f5a6d4e7058dde1ab46efd1497b6d49e702d2d627a5cdef9a71a0e7ff40dcb8
SHA3-384 hash: 38085734eaf4a6f538ad3273f33d34021d13a2834cf13eecfa87bd26fa4e97228b1f1e3d3d4decf0778704edba9aa2b5
SHA1 hash: ecd4244677b57f8e154eb1ee62067c46d0fab3b3
MD5 hash: f9adb1451b03a65ea245677dd394fc0a
humanhash: twelve-sierra-failed-lemon
File name:Invoice0214223.js
Download: download sample
Signature Vjw0rm
Create hunting rule
File size:3'874 bytes
First seen:2023-02-14 19:23:02 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 96:SABNo5Dqk2c24ZRMHXE6/BIg+Ys+fJHDdQqR7bJyKhkOS4UK:zSz2c24ZRMlBIDYs+fJjfRfNp
TLSH T11A811F9C284B963C53D27B8B802DD148CDF548B47E28D2B6148CDAC5360E979C7B69BD
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://198.12.123.17:9406/Vre

Intelligence

File Origin
# of uploads :
1
# of downloads :
231
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.JS.RUU.30437.16512.UNOFFICIAL
Create hunting rule

Gathering data
Verdict:
Malicious
Labled as:
TrojanDownloader/JS.Nemucod
Link:
https://www.hybrid-analysis.com/sample/8f5a6d4e7058dde1ab46efd1497b6d49e702d2d627a5cdef9a71a0e7ff40dcb8
Result
Threat name:
VjW0rm
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1174778
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Drops script or batch files to the startup folder
JavaScript source code contains functionality to check for AV products
JScript performs obfuscated calls to suspicious functions
Multi AV Scanner detection for submitted file
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Drops script at startup location
Sigma detected: VjW0rm
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Uses known network protocols on non-standard ports
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected VjW0rm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 807577 Sample: Invoice0214223.js Startdate: 14/02/2023 Architecture: WINDOWS Score: 100 48 Snort IDS alert for network traffic 2->48 50 Antivirus detection for dropped file 2->50 52 Antivirus / Scanner detection for submitted sample 2->52 54 6 other signatures 2->54 7 wscript.exe 2 16 2->7         started        12 wscript.exe 13 2->12         started        14 wscript.exe 13 2->14         started        16 2 other processes 2->16 process3 dnsIp4 46 198.12.123.17, 49699, 49700, 49701 AS-COLOCROSSINGUS United States 7->46 38 C:\...\Invoice0214223.js:Zone.Identifier, ASCII 7->38 dropped 40 C:\Users\user\AppData\...\Invoice0214223.js, ASCII 7->40 dropped 42 C:\...\Invoice0214223.js:Zone.Identifier, ASCII 7->42 dropped 44 C:\Users\user\AppData\...\Invoice0214223.js, ASCII 7->44 dropped 56 JScript performs obfuscated calls to suspicious functions 7->56 58 Drops script or batch files to the startup folder 7->58 60 Uses schtasks.exe or at.exe to add and modify task schedules 7->60 62 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 7->62 18 schtasks.exe 1 7->18         started        64 System process connects to network (likely due to code injection or exploit) 12->64 20 schtasks.exe 1 12->20         started        22 schtasks.exe 1 14->22         started        24 schtasks.exe 1 16->24         started        26 schtasks.exe 1 16->26         started        file5 signatures6 process7 process8 28 conhost.exe 18->28         started        30 conhost.exe 20->30         started        32 conhost.exe 22->32         started        34 conhost.exe 24->34         started        36 conhost.exe 26->36         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8f5a6d4e7058dde1ab46efd1497b6d49e702d2d627a5cdef9a71a0e7ff40dcb8/
Threat name:
Script-JS.Downloader.Vajawom
Create hunting rule
Status:
Malicious
First seen:
2023-02-14 19:24:09 UTC
File Type:
Text (VBS)
AV detection:
23 of 39 (58.97%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=r5ng2ttqldo6dk2g57ius63njhtqfuwwe6s43342ogqop72a3s4a._file
Result
Malware family:
vjw0rm
Create hunting rule
Score:
  10/10
Tags:
family:vjw0rm persistence trojan worm
Link:
https://tria.ge/reports/230214-x3twqafa3v/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Checks computer location settings
Drops startup file
Blocklisted process makes network request
Vjw0rm
Malware Config
C2 Extraction:
http://198.12.123.17:9406
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8f5a6d4e7058/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/8f5a6d4e7058dde1ab46efd1497b6d49e702d2d627a5cdef9a71a0e7ff40dcb8

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments