vjw0rm | ee80374831fab3f0f3adff5866ec8dacfd1001454b416c121ec5dcba099c5a51

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 14:01

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General

Target

fa7455d6a61fb3e6188ac979bbe934e7_JaffaCakes118.js
Size

31KB
MD5

fa7455d6a61fb3e6188ac979bbe934e7
SHA1

79015b30c58c35330d500967afbf6f1ba5e9f924
SHA256

ee80374831fab3f0f3adff5866ec8dacfd1001454b416c121ec5dcba099c5a51
SHA512

981662d3abbc5022a456509a352e9c5fa998d10aab21a99a1f082105f085696243281b669302e22b8059b1f8b30ea0aba98a5d14945c17a22f86ad06bf3f3747
SSDEEP

768:s14jK4anPHIspku5360lXGdcY3KEyTZT2p0VTx5NEY03l83:E4SHIa5XGdcJSpATx5eU

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

Processes:

wscript.exe

flow	pid	process
5	4344	wscript.exe
32	4344	wscript.exe
34	4344	wscript.exe
36	4344	wscript.exe
52	4344	wscript.exe
54	4344	wscript.exe
57	4344	wscript.exe
67	4344	wscript.exe
69	4344	wscript.exe
72	4344	wscript.exe
93	4344	wscript.exe
95	4344	wscript.exe
97	4344	wscript.exe
100	4344	wscript.exe
102	4344	wscript.exe
107	4344	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

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\tHpwtWlHkV.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

Processes:

wscript.exe

description	pid	process	target process
PID 4344 wrote to memory of 1816	4344	wscript.exe	wscript.exe
PID 4344 wrote to memory of 1816	4344	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\fa7455d6a61fb3e6188ac979bbe934e7_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\tHpwtWlHkV.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:1816

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

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Downloads

C:\Users\Admin\AppData\Roaming\tHpwtWlHkV.js

Filesize
10KB

MD5
f8c499a37127e740518507c1d3a2caa3

SHA1
9798bedde67191ad5f515d30fe30b6616965355f

SHA256
10ab2382646c3af7434f6db3001f43954b57e3274ab8780e031663af06506d9c

SHA512
5886f47fe9abc391a79ac17c84b9387f8b8258dcea754dbe21332b5d7e8c818d0b62e527e0a5291f66ade5dcfd1e16d62fbbfb19787256f79ff2dd7b2b214a50

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