vjw0rm | 6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8

Analysis

max time kernel
157s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/12/2023, 19:57

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General

Target
8a64707b027a9b569641b6151c54ba24.js
Size 16KB
Sample231226-yparcsbde6
SHA256 6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8
MD5 8a64707b027a9b569641b6151c54ba24
SHA1 b34f4dbb2f5b9a34645ea444db51841d9325a8cf
SHA512 9cade1e35eca162b7c06529b104db155e7c3a3f62965a88cbc66d709ee17ae7e86f53307b2208829d8c1ed498c96bbc3f73e7935df12b01533b4ef693f900456
SSDEEP 384:MweGYgHCLCQr8POER/JmuCOfhYFAFYQhIZGaN+Ce2buvm/vNDe7:umDQr8Wt5O+FBQhyZe2bZo7
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 9 IoCs

flow	pid	Process
10	3136	wscript.exe
40	3136	wscript.exe
64	3136	wscript.exe
67	3136	wscript.exe
72	3136	wscript.exe
78	3136	wscript.exe
81	3136	wscript.exe
84	3136	wscript.exe
92	3136	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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NBQpvDxIha.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\NBQpvDxIha.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-1-5-21-983843758-932321429-1636175382-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B02N3ZE1UL = "\"C:\\Users\\Admin\\AppData\\Roaming\\NBQpvDxIha.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 3136 wrote to memory of 4236	3136	wscript.exe	91
PID 3136 wrote to memory of 4236	3136	wscript.exe	91

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\8a64707b027a9b569641b6151c54ba24.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3136
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\NBQpvDxIha.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:4236

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

NBQpvDxIha.js

Path C:\Users\Admin\AppData\Roaming\NBQpvDxIha.js
Size 5KB
SHA256 0167ce0f367ac05128ac702d9f1b8a853a56e5fc0fa113d53a34266b6de3f1ac
MD5 1807d266a0331297bb3459474f4a78b5
SHA1 724d14ff54fa10acdddb4d158c68782388ca3ae6
SHA512 a980c5db1bfe54a7cf5e091ae79a73240c1d17cc6cdd99b154375921030827cc0494bf8a024d0ba9a22aeb14a0960d8c8011b84683142c72ed7030c01327d132
SSDEEP 96:ddLhNyzvScpnr4U2SVdkSVdH+3R2mrw9r1Eqvb1OCk396cqu9Vc:ryrtRvkSvNrGGBOLc
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads