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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e99599c5b1407b96f88bfcca51264c13d7ff5e7d00c2c3868636b575bb06fcae. 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: 8


Intelligence 8 IOCs YARA 1 File information Comments
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SHA256 hash: e99599c5b1407b96f88bfcca51264c13d7ff5e7d00c2c3868636b575bb06fcae
SHA3-384 hash: 2532c359b0f7f056f1f99f92090c06ca28ccf002926bdcfc6c6b100316daba95108225270223349d7550475b052d6ab2
SHA1 hash: dd76b76df265973b7aea2f3ffaba45123024f05c
MD5 hash: d65a553af676282e15cb3ab7cf998998
humanhash: eighteen-july-mirror-november
File name:Scanned.js
Download: download sample
Signature Vjw0rm
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File size:3'901 bytes
First seen:2023-08-04 21:26:32 UTC
Last seen:Never
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 96:SABNo5DLk2c24ZRMHXE6/BIE+Ys+fJHdDdQqR7bJyKUgOS4UK:zSM2c24ZRMlBI/Ys+fJHJfRfCp
TLSH T1D781229C284B863C53D27B8A802ED148CDF548B47F28D2B5149CDAC5360E975C7B19BD
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://jsgrouplimited.duckdns.org:9614/Vre

Intelligence

File Origin
# of uploads :
1
# of downloads :
304
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
Sanesecurity.Malware.28850.Heur.BadBat.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm evasive lolbin obfuscated schtasks wscript
Link:
https://www.filescan.io/uploads/64cd6d31334b732b61bd23f0/reports/d916569e-16fc-4ab8-a09d-da53a025461a/overview
Verdict:
Malicious
Labled as:
Trojan.JS
Link:
https://www.hybrid-analysis.com/sample/e99599c5b1407b96f88bfcca51264c13d7ff5e7d00c2c3868636b575bb06fcae
Result
Threat name:
VjW0rm
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Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1286039
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Drops script or batch files to the startup folder
Found malware configuration
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 dynamic DNS services
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: 1286039 Sample: Scanned.js Startdate: 04/08/2023 Architecture: WINDOWS Score: 100 46 Snort IDS alert for network traffic 2->46 48 Found malware configuration 2->48 50 Antivirus detection for dropped file 2->50 52 9 other signatures 2->52 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 42 jsgrouplimited.duckdns.org 2.59.254.205, 49696, 49697, 49698 CMCSUS Germany 7->42 38 C:\Users\user\AppData\Roaming\Scanned.js, ASCII 7->38 dropped 40 C:\Users\user\AppData\Roaming\...\Scanned.js, ASCII 7->40 dropped 54 System process connects to network (likely due to code injection or exploit) 7->54 56 JScript performs obfuscated calls to suspicious functions 7->56 58 Drops script or batch files to the startup folder 7->58 60 2 other signatures 7->60 18 schtasks.exe 1 7->18         started        20 schtasks.exe 1 12->20         started        22 schtasks.exe 1 14->22         started        44 192.168.2.1 unknown unknown 16->44 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/e99599c5b1407b96f88bfcca51264c13d7ff5e7d00c2c3868636b575bb06fcae/
Threat name:
Script-JS.Downloader.Vajawom
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Status:
Malicious
First seen:
2023-08-04 21:27:12 UTC
File Type:
Text (VBS)
AV detection:
15 of 24 (62.50%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5gkztrnrib5zn6el7tffcjsmcpl76xt5adbmhbugg22xloyg7sxa._file
Result
Malware family:
vjw0rm
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Score:
  10/10
Tags:
family:vjw0rm persistence trojan worm
Link:
https://tria.ge/reports/230804-1arsfaee26/
Behaviour
Creates scheduled task(s)
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Adds Run key to start application
Drops startup file
Blocklisted process makes network request
Vjw0rm
Malware Config
C2 Extraction:
http://jsgrouplimited.duckdns.org:9614
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/e99599c5b140/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/e99599c5b1407b96f88bfcca51264c13d7ff5e7d00c2c3868636b575bb06fcae

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:NET
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Author:malware-lu

File information

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

Comments