vjw0rm | fed6e6111eb6ef3d7d229ae1b88e2d641960a649cdf20e644073dd4ddbd1f624

General

Target

paymentref062322pdf.js
Size

329KB
MD5

d7ae71a84f14783b8967f0c212c11a40
SHA1

b6e65a134ed9ea8af13f15afecbda176efc670f3
SHA256

fed6e6111eb6ef3d7d229ae1b88e2d641960a649cdf20e644073dd4ddbd1f624
SHA512

5da6b457008fb251da48425a8b3095bcdd5013009f14300b7d8537ed1de2da87060251cdbcaaa1d53e01e95025c50d60a5aabde160d9c8f2fd5b67d2d7946f1c

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

C2

http://vjmworks.ddns.net:4040

Signatures

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

Blocklisted process makes network request 17 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
5	3192	wscript.exe
6	1180	wscript.exe
14	3192	wscript.exe
21	3192	wscript.exe
27	3192	wscript.exe
34	3192	wscript.exe
35	3192	wscript.exe
38	3192	wscript.exe
40	3192	wscript.exe
41	3192	wscript.exe
42	3192	wscript.exe
44	3192	wscript.exe
45	3192	wscript.exe
47	3192	wscript.exe
48	3192	wscript.exe
49	3192	wscript.exe
50	3192	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

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	wscript.exe

Drops startup file 4 IoCs

Processes:

wscript.exewscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\paymentref062322pdf.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\paymentref062322pdf.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dSTlIMurxt.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dSTlIMurxt.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
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\dSTlIMurxt.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 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1180 wrote to memory of 3192	1180	wscript.exe	wscript.exe
PID 1180 wrote to memory of 3192	1180	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\paymentref062322pdf.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1180
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\dSTlIMurxt.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:3192

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\dSTlIMurxt.js

Filesize
117KB

MD5
3ce1dcd3c1fc7cfcbd8eb339a7af50db

SHA1
bf3af7454116ad782019224f8a82924dc0424911

SHA256
baf6922678c85c6269c3c689dd25dcc1eda5db4857ac870246fe36d1a7315a41

SHA512
f64d10cafebf99e589af69b2061506ded48242b5df784131243d52f7fc99025b18e5e07c07bed5f7764e5d2006710d1fbf21ddb79a5ee20c47c53e76e7c7336d

Download Submit
memory/3192-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads