vjw0rm | 46d59194c7d2e539a1635e0f39774f5a75b0965e937843fd801470c64398b3e6

Analysis

max time kernel
146s
max time network
153s
platform
windows7_x64
resource
win7v20210410
submitted
06-07-2021 18:11

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General

Target

1ZGDH30JKA.js
Size

9KB
MD5

5138650f935189f5a1f88d76996a2154
SHA1

011e1fae41f1c1ffae3ea748f575b75a4fe2068f
SHA256

46d59194c7d2e539a1635e0f39774f5a75b0965e937843fd801470c64398b3e6
SHA512

4192448cbbb8af9e667b0e7e589474a84377080cd5b4c88ea5c66a16df390af176c756e47df7c88edeef7fd39b3a94e2b8c7c22390211a99a600387f1142208b

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 1 IoCs

Processes:

wscript.exe

flow pid process

11 2000 wscript.exe

flow	pid	process
11	2000	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\1ZGDH30JKA.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\1ZGDH30JKA.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
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\I0ZIRGD8RJ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\1ZGDH30JKA.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	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

752 schtasks.exe

pid	process
752	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2000 wrote to memory of 752	2000	wscript.exe	schtasks.exe
PID 2000 wrote to memory of 752	2000	wscript.exe	schtasks.exe
PID 2000 wrote to memory of 752	2000	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\1ZGDH30JKA.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\1ZGDH30JKA.js
2⤵
- Creates scheduled task(s)
PID:752

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

Replay Monitor

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Downloads

memory/752-59-0x0000000000000000-mapping.dmp

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