MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 47ac55851c62e30f0553a5d32f2b6a128f532b9904fbf5e100b53895ec8a86ca. 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: 9


Intelligence 9 IOCs YARA 12 File information Comments
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SHA256 hash: 47ac55851c62e30f0553a5d32f2b6a128f532b9904fbf5e100b53895ec8a86ca
SHA3-384 hash: 50382b4967bd150441ef1b8e79cffc1f9f86e9589f0501e2f3dda866c5ca43ec9e1537ccfba7c1394eeb220181484a6a
SHA1 hash: 17ff05d6c71c7c3f27be24cfd46b9653de9f67f2
MD5 hash: 811a102d237ae380b2d9517fa79f2c6d
humanhash: oven-helium-maryland-delta
File name:swift copy.PDF.js
Download: download sample
Signature Vjw0rm
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File size:464'575 bytes
First seen:2023-10-09 04:40:27 UTC
Last seen:2023-10-09 07:29:58 UTC
File type:Java Script (JS) js
MIME type:text/plain
ssdeep 6144:N5gPKUmu6hIe4UhL60X4dOvNJ38QJfJiDzh8qQESvpWvnR4Rt1Prz2fLFh2WR:N56fmu6mUhZVJ1J8DnRvAtlf2
TLSH T166A4F1148B941FA59B6C590BD0FE261D93B04B99D4A6B1CEEB13BC4BAFEFE00410749D
Reporter abuse_ch
Tags:js vjw0rm


Avatar
abuse_ch
Vjw0rm C2:
http://jemyy.theworkpc.com:5401/Vre

Intelligence

File Origin
# of uploads :
2
# of downloads :
328
Origin country :
NL NL
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.GT.JS.Krungen.2.74D58336.22850.14037.UNOFFICIAL
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Verdict:
Malicious
Threat level:
  10/10
Confidence:
88%
Tags:
anti-vm evasive lolbin masquerade obfuscated wscript
Link:
https://www.filescan.io/uploads/6523845f426c8727d6f5119c/reports/018f477d-2096-4f8c-aee0-c94f3d5b4d35/overview
Verdict:
Malicious
Labled as:
GT:JS.Krungen.2
Link:
https://www.hybrid-analysis.com/sample/47ac55851c62e30f0553a5d32f2b6a128f532b9904fbf5e100b53895ec8a86ca
Result
Verdict:
MALICIOUS
Result
Threat name:
VjW0rm
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1321925
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
Benign windows process drops PE files
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 generate code involving a shell, file or stream
JScript performs obfuscated calls to suspicious functions
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Queries sensitive service information (via WMI, Win32_LogicalDisk, often done to detect sandboxes)
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Sigma detected: VjW0rm
System process connects to network (likely due to code injection or exploit)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses known network protocols on non-standard ports
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript called in batch mode (surpress errors)
Yara detected VjW0rm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1321925 Sample: swift_copy.PDF.js Startdate: 09/10/2023 Architecture: WINDOWS Score: 100 40 jemyy.theworkpc.com 2->40 42 www.askfgas.net 2->42 56 Multi AV Scanner detection for domain / URL 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 8 other signatures 2->62 10 wscript.exe 1 3 2->10         started        14 wscript.exe 12 2->14         started        signatures3 process4 file5 36 C:\Users\user\AppData\Roaming\bin.exe, PE32 10->36 dropped 38 C:\Users\user\AppData\RoamingCqEVMhpHV.js, ASCII 10->38 dropped 74 Benign windows process drops PE files 10->74 76 JScript performs obfuscated calls to suspicious functions 10->76 78 Drops script or batch files to the startup folder 10->78 82 3 other signatures 10->82 16 bin.exe 10->16         started        19 wscript.exe 1 13 10->19         started        80 System process connects to network (likely due to code injection or exploit) 14->80 signatures6 process7 dnsIp8 48 Antivirus detection for dropped file 16->48 50 Machine Learning detection for dropped file 16->50 52 Maps a DLL or memory area into another process 16->52 23 CgbFZzHQZrpMDxiMPFIOLSBQuaIUx.exe 16->23 injected 44 jemyy.theworkpc.com 109.248.144.235, 49736, 49737, 5401 DATACLUB-SE Russian Federation 19->44 34 C:\Users\user\AppData\...CqEVMhpHV.js, ASCII 19->34 dropped 54 Windows Scripting host queries suspicious COM object (likely to drop second stage) 19->54 file9 signatures10 process11 signatures12 64 Maps a DLL or memory area into another process 23->64 26 ktmutil.exe 13 23->26         started        process13 signatures14 66 Tries to steal Mail credentials (via file / registry access) 26->66 68 Tries to harvest and steal browser information (history, passwords, etc) 26->68 70 Maps a DLL or memory area into another process 26->70 72 Queues an APC in another process (thread injection) 26->72 29 CgbFZzHQZrpMDxiMPFIOLSBQuaIUx.exe 26->29 injected 32 firefox.exe 26->32         started        process15 dnsIp16 46 www.askfgas.net 50.2.129.125, 49739, 80 EONIX-COMMUNICATIONS-ASBLOCK-62904US United States 29->46
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/47ac55851c62e30f0553a5d32f2b6a128f532b9904fbf5e100b53895ec8a86ca/
Threat name:
Script-JS.Trojan.Heuristic
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Status:
Malicious
First seen:
2023-10-09 04:28:10 UTC
File Type:
Text (JavaScript)
AV detection:
9 of 38 (23.68%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=i6wflbi4mlrq6bktuxjs6k3kckhvgk4zat57lyiawu4jl3ekq3fa._file
Result
Malware family:
vjw0rm
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Score:
  10/10
Tags:
family:vjw0rm trojan worm
Link:
https://tria.ge/reports/231009-fa4f1sce66/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Drops startup file
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Vjw0rm
Malware Config
C2 Extraction:
http://jemyy.theworkpc.com:5401
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/47ac55851c62/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Vjw0rm
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/47ac55851c62e30f0553a5d32f2b6a128f532b9904fbf5e100b53895ec8a86ca

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:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Author:qux
Description:Detects exe does not have import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants

File information

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

Comments