vjw0rm | 7acb1e3e7f173f2cc884c87a15260f06f59ed45e79e979afb37e361dd0b2625d

Analysis

max time kernel
146s
max time network
150s
platform
windows10_x64
resource
win10v20210408
submitted
08-10-2021 10:23

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General

Target

INTERAC Service Request9466544665440.js
Size

3KB
MD5

38ecf70cf09d8c499546c01c028dd70f
SHA1

d4d57eeb688d2abe1eeae5b0dc142d588246648b
SHA256

7acb1e3e7f173f2cc884c87a15260f06f59ed45e79e979afb37e361dd0b2625d
SHA512

bd92d0a81b6c9b553d11ace0f680f677a727de965703205955c92650ed43fe68f593b228e62d90acafc53e34864e4715eebd877808e2b160ee1d3dfeaf9462bc

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://jswormpeople.duckdns.org:1921

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

7 652 wscript.exe

flow	pid	process
7	652	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\INTERAC Service Request9466544665440.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INTERAC Service Request9466544665440.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\K3A8F1X622 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\INTERAC Service Request9466544665440.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
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
T1053

Processes:

schtasks.exe

pid process

3560 schtasks.exe

pid	process
3560	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 652 wrote to memory of 3560	652	wscript.exe	schtasks.exe
PID 652 wrote to memory of 3560	652	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\INTERAC Service Request9466544665440.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\INTERAC Service Request9466544665440.js
2⤵
- Creates scheduled task(s)
PID:3560

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/3560-114-0x0000000000000000-mapping.dmp

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