vjw0rm | f1f985bd12efabd68532363a591006c7d6731eb81c3b4dfde0c87923d9d544b0

Analysis

max time kernel
140s
max time network
146s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
05/04/2023, 05:51

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General

Target

customerinvoice.js
Size

3KB
MD5

ba46627336f749aef1adfd78f958212f
SHA1

7fce56ef8cbbf08e12c645d01fa0df595af04cc6
SHA256

f1f985bd12efabd68532363a591006c7d6731eb81c3b4dfde0c87923d9d544b0
SHA512

bb9fcb11217b045266028693f5028082e3511a12761fb760583886e9fe6ce54f0d082c21fd3a7de8f5c4e31d18a772ccfc34755b6122a2b0bca77b4642e2bfd2

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://198.12.123.17:2402

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	820	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\Software\Microsoft\Windows\CurrentVersion\Run\QBB0QPSPE2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\customerinvoice.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1914912747-3343861975-731272777-1000\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

pid	Process
1928	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 820 wrote to memory of 1928	820	wscript.exe	28
PID 820 wrote to memory of 1928	820	wscript.exe	28
PID 820 wrote to memory of 1928	820	wscript.exe	28

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\customerinvoice.js
1⤵
- Blocklisted process makes network request
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:820
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\customerinvoice.js
  2⤵
  - Creates scheduled task(s)
  PID:1928

Network

MITRE ATT&CK Enterprise 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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads