vjw0rm | 789e896d4629b24edcc81ea72ae6d7dca8469387665f376bfa342b4e9f06bf52

Analysis

max time kernel
155s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
31/12/2023, 02:34

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General

Target

24a49c42db23182b354a5672871d7656.js
Size

16KB
MD5

24a49c42db23182b354a5672871d7656
SHA1

645a4265ec79be23b68720df010b825d405a1a64
SHA256

789e896d4629b24edcc81ea72ae6d7dca8469387665f376bfa342b4e9f06bf52
SHA512

38d82603b3e3fdf5e0d43a92e9155fd3e331d3a798cb14ec58ccd9379118ce53bdb1b6f1a65e8b6d7e0c41285a0d1476bcffcbac0abea384dba1ef894912466d
SSDEEP

384:b3eeQYggN0jQXGNNS/7puQORhTYrlvmIxaN+gszMpodvQ9NlB26:DVsTQXGufO/6vU/szM1vX26

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
32	4604	wscript.exe
42	4604	wscript.exe
54	4604	wscript.exe
64	4604	wscript.exe
70	4604	wscript.exe
76	4604	wscript.exe
79	4604	wscript.exe
96	4604	wscript.exe
104	4604	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-1-5-21-3073191680-435865314-2862784915-1000\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\fvmVTYxeqb.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\fvmVTYxeqb.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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\B02N3ZE1UL = "\"C:\\Users\\Admin\\AppData\\Roaming\\fvmVTYxeqb.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 4604 wrote to memory of 3928	4604	wscript.exe	92
PID 4604 wrote to memory of 3928	4604	wscript.exe	92

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\24a49c42db23182b354a5672871d7656.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\fvmVTYxeqb.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  PID:3928

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

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

Filesize
5KB

MD5
2ba1970b35cbf6896dbdedb3e61eab35

SHA1
3a9a1d222950c40f16c89507c69287568344db68

SHA256
36c4200b468fad9de5070cb4d457078ae7359d3a345c7dd07da6f2ef6a328837

SHA512
e347ee9caccf4e83828c681918ae967f7f92a669a7e023a5017fe46af813164ba7701e4e605fb5db59e4577545d9a3896ae3c0bf8cc1807abcfcec8cd885ec0f

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads