vjw0rm | fe0c71a9cc20af0f39f8f779c0383fa38a64157181306018062376b7374c11f1

Analysis

max time kernel
149s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 16:57

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General

Target
SKM_C258201001130020005057.js
Size 27KB
Sample240305-vgnfpscf43
SHA256 2a830c7923253031907c1dd34c4a9532c1f53e8fe7f6a3c8359a0e93ef4b216e
MD5 511f6a9de220c99adf7e2e03a4e48886
SHA1 7e3c217e99f7bdd44c2e760feaf413cb3a7736fb
SHA512 8fe6e672872a208e9cac950856c1afa4cdb7fc496cc67531a98322fed1f1b83b1b7b5ce7f5a702b56197c853f0bf09deb5e1958b4369ca01cb42c401fdb4c090
SSDEEP 768:BIa7X/aqtEJfke022Fb+wGcrLQfpds+TbGKRRcpX:qabledke0HFbpGoLQfs+TbGORcpX
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 12 IoCs

flow	pid	Process
18	228	wscript.exe
53	228	wscript.exe
77	228	wscript.exe
88	228	wscript.exe
123	228	wscript.exe
141	228	wscript.exe
156	228	wscript.exe
182	228	wscript.exe
197	228	wscript.exe
235	228	wscript.exe
253	228	wscript.exe
258	228	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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PhOPzJgSgd.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\PhOPzJgSgd.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\SKM_C258201001130020005057.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\3XFVC1CQKY = "\"C:\\Users\\Admin\\AppData\\Roaming\\SKM_C258201001130020005057.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0HKX5ALWLG = "\"C:\\Users\\Admin\\AppData\\Roaming\\PhOPzJgSgd.js\""	wscript.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3436	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 900	228	wscript.exe	97
PID 228 wrote to memory of 900	228	wscript.exe	97
PID 228 wrote to memory of 3436	228	wscript.exe	99
PID 228 wrote to memory of 3436	228	wscript.exe	99

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\SKM_C258201001130020005057.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\PhOPzJgSgd.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:900
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\SKM_C258201001130020005057.js
  2⤵
  - Creates scheduled task(s)
  PID:3436

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4036 --field-trial-handle=2676,i,447940133669489189,1353734109898858672,262144 --variations-seed-version /prefetch:8
1⤵
PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

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

PhOPzJgSgd.js

Path C:\Users\Admin\AppData\Roaming\PhOPzJgSgd.js
Size 8KB
SHA256 9bfbb43d7401e73169d525c90feb26e4d968a301cb7f6045535c8025f780d731
MD5 398ea7fcde0fe6de66a488b8d0df37b3
SHA1 847de03f765f337624423386aa124e0910c22883
SHA512 bc9a0491ea5c9f5aadb63e7a8811acebca4afeb9c1d76db985d2c7732c36ffe7e1fbb0cff970cabf51bc20db752cef847712b4147e8d0480014d1f7d3bb08111
SSDEEP 192:wqhQXyiZ1wEsVcKrxqzh45i6nxdlqfhCyiVhfRb:aDAlYx6ZRN
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