vjw0rm | 58f2aec1d4020c14b45c8357512b8787eed4a4d208497d6866c29ee2f4f24cfb

Analysis

max time kernel
128s
max time network
130s
platform
windows10_x64
resource
win10v20210408
submitted
24-04-2021 19:55

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General

Target

6W5MPAEEPH.js
Size

10KB
MD5

478634c9781a93f5c34e70623a62ee1e
SHA1

ed996dd6ea02d176c46c01f17ebe19c217d3ce5e
SHA256

58f2aec1d4020c14b45c8357512b8787eed4a4d208497d6866c29ee2f4f24cfb
SHA512

e3ba328dcf8f7766fe9e1b471cc9cd08d24da3d4b4e584262ed1ec4c8fbc972fd9d60e39c7f138390316d61f8292520900fa1b3d5fc0f65dc00dd85a08d6cacd

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.exe

flow pid process

6 652 wscript.exe
16 652 wscript.exe

flow	pid	process
6	652	wscript.exe
16	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\6W5MPAEEPH.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6W5MPAEEPH.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\OXKHGDB6LZ = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\6W5MPAEEPH.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

3764 schtasks.exe

pid	process
3764	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 652 wrote to memory of 3764	652	wscript.exe	schtasks.exe
PID 652 wrote to memory of 3764	652	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\6W5MPAEEPH.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\6W5MPAEEPH.js
2⤵
- Creates scheduled task(s)
PID:3764

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/3764-114-0x0000000000000000-mapping.dmp

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