vjw0rm | 3fc1fb51d51fad0c29f39c364ec884316425d0f720d936961fca636bd02bbf36

Analysis

max time kernel
145s
max time network
151s
platform
windows10_x64
resource
win10v20210408
submitted
04-09-2021 03:00

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General

Target

js-decoded-3.js
Size

3KB
MD5

d5b3975035faa8a2932a5842c34d741b
SHA1

14f8c1376797a6701fbeb868a3fe331b0db01e18
SHA256

3fc1fb51d51fad0c29f39c364ec884316425d0f720d936961fca636bd02bbf36
SHA512

f80659d9081abd5f8d37fa4017a3371382f6a9af942094a3512fe880e6c8ad2ed8ccc8ab85f08d94f3de6fee282f28146342d8bdc1f640b3363070a65d67fc3b

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 6 IoCs

Processes:

wscript.exe

flow pid process

8 924 wscript.exe
17 924 wscript.exe
18 924 wscript.exe
20 924 wscript.exe
21 924 wscript.exe
22 924 wscript.exe

flow	pid	process
8	924	wscript.exe
17	924	wscript.exe
18	924	wscript.exe
20	924	wscript.exe
21	924	wscript.exe
22	924	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\js-decoded-3.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\js-decoded-3.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
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\js-decoded-3.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\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

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\js-decoded-3.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:924

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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