vjw0rm | 05e7a07a0cac3c776354d01d2858289465705e857fbd447c14a1b45467a5f1fa

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30/12/2023, 03:24

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General

Target
0cdf14fd98567284a5cbe2fa14e93ca4.js
Size 16KB
Sample231230-dycxvsbehq
SHA256 05e7a07a0cac3c776354d01d2858289465705e857fbd447c14a1b45467a5f1fa
MD5 0cdf14fd98567284a5cbe2fa14e93ca4
SHA1 7e87bbd434b28dab98a471628ec357681db9d608
SHA512 3c2bd27a6356deb4b90bd148e81e6b83a35ebf86845f18c07565222de69fa9acf88756eb7f6d0fa2c4caf63315e5e8d7d0864e72860586a257211d38e53ece16
SSDEEP 384:zMepYgyGv5TQtC3t8/PTu0OFh5QL4IFIaDnqW20+EcvxZFL26:/PPBQtCs/Om1FMW+hL26
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 6 IoCs

flow	pid	Process
4	1376	wscript.exe
59	1376	wscript.exe
116	1376	wscript.exe
134	1376	wscript.exe
152	1376	wscript.exe
159	1376	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vuswRnMIkL.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vuswRnMIkL.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B02N3ZE1UL = "\"C:\\Users\\Admin\\AppData\\Roaming\\vuswRnMIkL.js\""	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1376 wrote to memory of 112	1376	wscript.exe	89
PID 1376 wrote to memory of 112	1376	wscript.exe	89

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\0cdf14fd98567284a5cbe2fa14e93ca4.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1376
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\vuswRnMIkL.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

vuswRnMIkL.js

Path C:\Users\Admin\AppData\Roaming\vuswRnMIkL.js
Size 5KB
SHA256 5a0942dfe91f30dbd57bf4a76da32aed736007aeb14c4de09d0e40a173ed2b67
MD5 93bdcce33078733a7621abd9bf7d19db
SHA1 018119c336f005efcb34b801561d0360be5e3033
SHA512 4e470ea26eedf093968221280d5d0e3b1c6dae9b07266abd35a0ba1220da821548b9390175dfcd528cee5426834ccd72ab34918eb4d69158cba57bc14fc6f01b
SSDEEP 96:dALhytu5vjDY7r4iOSVdOSVdFw3R2irq9M7xQFtFbasYj6nRY:ttS6pvOSvzOQFtFbasrnW
MD5 SHA1 SHA512 SSDEEP

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads