vjw0rm | 6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8

Analysis

max time kernel
145s
max time network
148s
platform
windows10_x64
resource
win10v20210410
submitted
29-07-2021 11:01

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General

Target

COTIZACION July 1079.js
Size

16KB
MD5

8a64707b027a9b569641b6151c54ba24
SHA1

b34f4dbb2f5b9a34645ea444db51841d9325a8cf
SHA256

6e64dbcbe7e1c0e0eb8f4f967b936221c7a6c0185718fe991612e478e22f9cc8
SHA512

9cade1e35eca162b7c06529b104db155e7c3a3f62965a88cbc66d709ee17ae7e86f53307b2208829d8c1ed498c96bbc3f73e7935df12b01533b4ef693f900456

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 2 IoCs

Processes:

wscript.exewscript.exe

flow pid process

7 3980 wscript.exe
8 800 wscript.exe

flow	pid	process
7	3980	wscript.exe
8	800	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\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). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 3980 wrote to memory of 800	3980	wscript.exe	wscript.exe
PID 3980 wrote to memory of 800	3980	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\COTIZACION July 1079.js"
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:3980
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\NBQpvDxIha.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:800

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

MD5
1807d266a0331297bb3459474f4a78b5

SHA1
724d14ff54fa10acdddb4d158c68782388ca3ae6

SHA256
0167ce0f367ac05128ac702d9f1b8a853a56e5fc0fa113d53a34266b6de3f1ac

SHA512
a980c5db1bfe54a7cf5e091ae79a73240c1d17cc6cdd99b154375921030827cc0494bf8a024d0ba9a22aeb14a0960d8c8011b84683142c72ed7030c01327d132

Download Submit
memory/800-114-0x0000000000000000-mapping.dmp

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