vjw0rm | 57b56589ab9b5af1563ee76a0d8ef01140fd7524d598425f17a802239a664665

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
03/01/2024, 15:13

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General

Target
9c5c5f9ad578bee135a739068f7e1504.js
Size 39KB
Sample240103-slt3yahhe9
SHA256 57b56589ab9b5af1563ee76a0d8ef01140fd7524d598425f17a802239a664665
MD5 9c5c5f9ad578bee135a739068f7e1504
SHA1 6330c103a56e7786281190665b4346f73f827263
SHA512 275795ef1379b36d1931a81ef08b50640438c9456ca503f4fc7dcb8c11f03779e7032754905161c5ef9275226d47eaee02dfb021c284995e961dcd48646b206b
SSDEEP 96:XklnBqyNNm0vNei6Z7fEtcROHcRb+UfL7MHU+d3e74XkDCqs00AKp07llhIx07le:UlnBqyNNm0vNE7W0FixS9kgT9I
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

vjw0rm trojan worm

Malware Config

Signatures

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

Blocklisted process makes network request 9 IoCs

flow	pid	Process
5	4840	wscript.exe
38	4840	wscript.exe
70	4840	wscript.exe
84	4840	wscript.exe
105	4840	wscript.exe
134	4840	wscript.exe
145	4840	wscript.exe
152	4840	wscript.exe
162	4840	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3336304223-2978740688-3645194410-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\9c5c5f9ad578bee135a739068f7e1504.js	wscript.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job

T1053

pid	Process
2896	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4840 wrote to memory of 2896	4840	wscript.exe	89
PID 4840 wrote to memory of 2896	4840	wscript.exe	89

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\9c5c5f9ad578bee135a739068f7e1504.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:4840
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\9c5c5f9ad578bee135a739068f7e1504.js
  2⤵
  - Creates scheduled task(s)
  PID:2896

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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