vjw0rm | dff140d494fb80e82a23e29b374abc733ed9b62525fdca0341fdbb121290dca6

Analysis

max time kernel
147s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 09:00

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
e9a08df4b85e99b01a9c145e9af3964d_JaffaCakes118.js
Size 26KB
Sample240409-kyevsaee6t
SHA256 dff140d494fb80e82a23e29b374abc733ed9b62525fdca0341fdbb121290dca6
MD5 e9a08df4b85e99b01a9c145e9af3964d
SHA1 e498d70a9b568d7a66d661c91e9ed2db52d442df
SHA512 a2e2bfc777e80770444554866fc29df5ce307974bc842de43d40ab1b536d0be1398eff97ba2d6bc73c59966b86570ebc3c4ce85d1f6430c2a32c4110b2e73283
SSDEEP 384:TsUHnUJBuX5ZIgJ2ug5cP5ijvspjo+sUCtfayieHGnN04V1E/el2gyUZhUQAQG3x:Okf5QMysF2HfmNNaudAQG320
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 16 IoCs

flow	pid	Process
4	3632	wscript.exe
19	3632	wscript.exe
34	3632	wscript.exe
43	3632	wscript.exe
52	3632	wscript.exe
54	3632	wscript.exe
56	3632	wscript.exe
66	3632	wscript.exe
68	3632	wscript.exe
70	3632	wscript.exe
78	3632	wscript.exe
80	3632	wscript.exe
82	3632	wscript.exe
85	3632	wscript.exe
87	3632	wscript.exe
89	3632	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-1-5-21-609813121-2907144057-1731107329-1000\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\yBqkfOVwNP.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yBqkfOVwNP.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-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\yBqkfOVwNP.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 3632 wrote to memory of 4656	3632	wscript.exe	85
PID 3632 wrote to memory of 4656	3632	wscript.exe	85

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\e9a08df4b85e99b01a9c145e9af3964d_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3632
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\yBqkfOVwNP.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:4656

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

Replay Monitor

Loading Replay Monitor...

Downloads

yBqkfOVwNP.js

Path C:\Users\Admin\AppData\Roaming\yBqkfOVwNP.js
Size 9KB
SHA256 7c61705381b479cfe63d85a7eae012b4bfc5825d01b1d7c2366277d3ed5c880f
MD5 57111779ec54af1803d5013520a6b104
SHA1 822be87e2f4dbc2ccf178141bd95d916b90f8dfd
SHA512 6d4db62c75d8bbfa4de93633c3216538bf5bf611323c03693744ae410919a18d6e3096b7f4270eee1727931603978c1b02390d3a82d10d19fbf8787bc158cf30
SSDEEP 192:VoRQOOi+pu/kvqc+CXueGHioZQjLNW5UvRLcJndnyiea92Hqb:ToRPZH4LNW5UZG320
MD5 SHA1 SHA512 SSDEEP

Submit Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads