vjw0rm | b021b6f11e1b6ae8110693f27e0d1f638b1d7ec2e51b2f74a17acf29bf457190

Analysis

max time kernel
145s
max time network
161s
platform
windows10_x64
resource
win10v20210410
submitted
01-07-2021 15:51

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General

Target

Inoice #022392.js
Size

3KB
MD5

8f5e8de1f67cff6eaf2842d8a9d38fa5
SHA1

73c5d2068856ddd941e75ae3dc15879821552276
SHA256

b021b6f11e1b6ae8110693f27e0d1f638b1d7ec2e51b2f74a17acf29bf457190
SHA512

38e2af31212253d73f874f38bcafb589fcedbf0c9f7a28247944ee4b96a3590a67bbb027beded3a084fcf29e9a8cdf63a9347d50c914d741d4ca7e78c8027669

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

8 3876 wscript.exe

flow	pid	process
8	3876	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\Inoice #022392.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Inoice #022392.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\IHQI1BOYEF = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Inoice #022392.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

1532 schtasks.exe

pid	process
1532	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 3876 wrote to memory of 1532	3876	wscript.exe	schtasks.exe
PID 3876 wrote to memory of 1532	3876	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Inoice #022392.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3876

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Inoice #022392.js
2⤵
- Creates scheduled task(s)
PID:1532

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/1532-114-0x0000000000000000-mapping.dmp

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