vjw0rm | b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb

Analysis

max time kernel
145s
max time network
148s
platform
windows10_x64
resource
win10v20210408
submitted
13-10-2021 15:54

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General

Target

V00JM_Invoice_Copy.js
Size

11KB
MD5

e39be287d5161038ddeaa6ebbca80151
SHA1

0ab208083961f5054b4042eb86eb1d195701d89d
SHA256

b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb
SHA512

f524bc2967f94cf6a56e6461e2b5daf4ceef86dc5bf53b15e0c199626c447a4009d632153bc391e54698960f30645866d62865c0f91d7a3be7cd363d844ff8a0

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://mchristopherr83.duckdns.org:7922

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

11 804 wscript.exe

flow	pid	process
11	804	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\V00JM_Invoice_Copy.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\V00JM_Invoice_Copy.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\JX0T7EQ31M = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\V00JM_Invoice_Copy.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

3876 schtasks.exe

pid	process
3876	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 804 wrote to memory of 3876	804	wscript.exe	schtasks.exe
PID 804 wrote to memory of 3876	804	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\V00JM_Invoice_Copy.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:804

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\V00JM_Invoice_Copy.js
2⤵
- Creates scheduled task(s)
PID:3876

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/3876-114-0x0000000000000000-mapping.dmp

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