vjw0rm | b302998fc5e3ff4a61d22f5c35ea5e168e040d10bc8437cf8c190bfc27e63dd0

Analysis

max time kernel
151s
max time network
175s
platform
windows7_x64
resource
win7v20210410
submitted
01/09/2021, 04:44

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General

Target
extracted.js
Size 18KB
Sample210901-efrk2f188x
SHA256 b302998fc5e3ff4a61d22f5c35ea5e168e040d10bc8437cf8c190bfc27e63dd0
MD5 1d9327d69fd263ac645b6a4eef31cb24
SHA1 3cff6c8d464e8c254048635dd68e31225ffcb6e4
SHA512 50cf6ff55a3f73803b4b1313c029e08e66e62ff6de1fd839fec21aecc09d30254616a3b8aab271828a7a69f4835d155ee4af53bb3c4daaa3b4a1cb2305409e2f
MD5 SHA1 SHA512

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 19 IoCs

flow	pid	Process
8	1464	wscript.exe
9	2028	wscript.exe
11	1464	wscript.exe
13	1464	wscript.exe
15	1464	wscript.exe
17	1464	wscript.exe
19	1464	wscript.exe
22	1464	wscript.exe
25	1464	wscript.exe
27	1464	wscript.exe
29	1464	wscript.exe
32	1464	wscript.exe
34	1464	wscript.exe
36	1464	wscript.exe
39	1464	wscript.exe
41	1464	wscript.exe
43	1464	wscript.exe
46	1464	wscript.exe
48	1464	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\amqolYPJMq.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\amqolYPJMq.js	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
Key created	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\amqolYPJMq.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

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 1464	2028	wscript.exe	26
PID 2028 wrote to memory of 1464	2028	wscript.exe	26
PID 2028 wrote to memory of 1464	2028	wscript.exe	26

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\extracted.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\amqolYPJMq.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1464

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2028-60-0x000007FEFC411000-0x000007FEFC413000-memory.dmp

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