vjw0rm | b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb | Triage

Analysis

max time kernel
143s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/04/2024, 00:06 UTC

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General

Target

e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js
Size

11KB
MD5

e39be287d5161038ddeaa6ebbca80151
SHA1

0ab208083961f5054b4042eb86eb1d195701d89d
SHA256

b91e92bc3dd5d7eddb8c10f8aee1429f262b4cd033e4d1847c7eaf180a0120eb
SHA512

f524bc2967f94cf6a56e6461e2b5daf4ceef86dc5bf53b15e0c199626c447a4009d632153bc391e54698960f30645866d62865c0f91d7a3be7cd363d844ff8a0
SSDEEP

192:fYmQfHbdlbNiTGh0a3VhWNGKXy0w1G75fERC5DfBABEgFLYogETfciuD9JKSzTe3:YdlAq0aDWNGSy0w0Sk9AigFLKKPuvza3

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 5 IoCs

flow	pid	Process
4	856	wscript.exe
8	856	wscript.exe
9	856	wscript.exe
11	856	wscript.exe
12	856	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js	wscript.exe

Adds Run key to start application 2 TTPs 1 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\Software\Microsoft\Windows\CurrentVersion\Run\JX0T7EQ31M = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.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.

Scheduled Task/Job

pid	Process
2572	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 856 wrote to memory of 2572	856	wscript.exe	29
PID 856 wrote to memory of 2572	856	wscript.exe	29
PID 856 wrote to memory of 2572	856	wscript.exe	29

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\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:856
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\e39be287d5161038ddeaa6ebbca80151_JaffaCakes118.js
  2⤵
  - Creates scheduled task(s)
  PID:2572

Network

DNS

mchristopherr83.duckdns.org

wscript.exe

Remote address:

8.8.8.8:53

Request

mchristopherr83.duckdns.org

IN A

Response

mchristopherr83.duckdns.org

IN A

179.61.237.210

179.61.237.210:7922

mchristopherr83.duckdns.org

wscript.exe

152 B
3
179.61.237.210:7922

mchristopherr83.duckdns.org

wscript.exe

152 B
3
179.61.237.210:7922

mchristopherr83.duckdns.org

wscript.exe

152 B
3
179.61.237.210:7922

mchristopherr83.duckdns.org

wscript.exe

152 B
3
179.61.237.210:7922

mchristopherr83.duckdns.org

wscript.exe

152 B
3
179.61.237.210:7922

mchristopherr83.duckdns.org

104 B
2

8.8.8.8:53

mchristopherr83.duckdns.org

dns

wscript.exe

73 B
89 B
1
1

DNS Request

mchristopherr83.duckdns.org

DNS Response

179.61.237.210

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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