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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b921ff143f8ca087ff5300fc4bbfe2380d4b8f33d05120d2aec85faebce907f8. 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 1 YARA File information Comments

SHA256 hash: b921ff143f8ca087ff5300fc4bbfe2380d4b8f33d05120d2aec85faebce907f8
SHA3-384 hash: 469b434cec8ebe91c0541e357a615e9547f075c1de06447c22aaa3422c1257cbe9ad5acc87465955374289997a75006f
SHA1 hash: d363d4d19625e3931bbda3a9ca7b776485768a50
MD5 hash: 4580dbb222f08f1c08a6e79a1e12f3aa
humanhash: uniform-low-michigan-eleven
File name:scan002548.pdf.js
Download: download sample
Signature Vjw0rm
File size:16'478 bytes
First seen:2022-10-10 09:15:58 UTC
Last seen:2022-10-10 11:23:26 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 384:XFHo+Kdxqm4y1eJcztRyKQbiWMzCKQzhvzS2aGapj:XBobnxeIRyrMzqxPapj
TLSH T1CB729EF2AD29FF25DBD8278642FCDE0D2BED874A8601F95F34126704D460588A50F26E
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://whiteking.giize.com:6565/Vre

Indicators Of Compromise (IOCs)


Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://whiteking.giize.com:6565/Vre https://threatfox.abuse.ch/ioc/872727/

Intelligence


File Origin
# of uploads :
2
# of downloads :
258
Origin country :
n/a
Vendor Threat Intelligence
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
anti-vm evasive obfuscated
Result
Threat name:
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Drops script or batch files to the startup folder
JScript performs obfuscated calls to suspicious functions
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Potential malicious VBS/JS script found (suspicious encoded strings)
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Sigma detected: Drops script at startup location
Sigma detected: VjW0rm
System process connects to network (likely due to code injection or exploit)
Uses an obfuscated file name to hide its real file extension (double extension)
Wscript called in batch mode (surpress errors)
Yara detected VjW0rm
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 720017 Sample: scan002548.pdf.js Startdate: 11/10/2022 Architecture: WINDOWS Score: 100 44 Multi AV Scanner detection for domain / URL 2->44 46 Antivirus detection for URL or domain 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 5 other signatures 2->50 6 wscript.exe 2 15 2->6         started        11 wscript.exe 12 2->11         started        13 wscript.exe 13 2->13         started        15 2 other processes 2->15 process3 dnsIp4 40 whiteking.giize.com 23.105.131.238, 49698, 49700, 49701 LEASEWEB-USA-NYC-11US United States 6->40 30 C:\Users\user\AppData\Roaming30bcMSbvqgG.js, ASCII 6->30 dropped 32 C:\...\scan002548.pdf.js:Zone.Identifier, ASCII 6->32 dropped 34 C:\Users\user\AppData\...\scan002548.pdf.js, ASCII 6->34 dropped 54 System process connects to network (likely due to code injection or exploit) 6->54 56 JScript performs obfuscated calls to suspicious functions 6->56 58 Drops script or batch files to the startup folder 6->58 60 Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes) 6->60 17 wscript.exe 13 6->17         started        62 Wscript called in batch mode (surpress errors) 11->62 21 wscript.exe 11->21         started        24 wscript.exe 13->24         started        42 javaautorun.duia.ro 15->42 26 wscript.exe 15->26         started        file5 signatures6 process7 dnsIp8 36 javaautorun.duia.ro 41.217.5.36, 5465 SpectranetNG Nigeria 17->36 38 192.168.2.1 unknown unknown 17->38 28 C:\Users\user\AppData\...28bcMSbvqgG.js, ASCII 17->28 dropped 52 System process connects to network (likely due to code injection or exploit) 21->52 file9 signatures10
Threat name:
Win32.Trojan.Vjw0rm
Status:
Malicious
First seen:
2022-10-10 09:16:05 UTC
File Type:
Text (JavaScript)
AV detection:
8 of 26 (30.77%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:vjw0rm persistence trojan worm
Behaviour
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://whiteking.giize.com:6565
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Comments