vjw0rm | 2cf7cf0ac77b25eccc61fea38629e1a2de4547aa1d4eaae4f7885fdc0e2194a4

Analysis

max time kernel
4294188s
max time network
131s
platform
windows7_x64
resource
win7-20220311-en
submitted
22-03-2022 18:32

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General

Target

eVoucher.js
Size

10KB
MD5

4a86c0250f53d61920c72434e80ac836
SHA1

52d5178d979640301456d353bb1d3a4cd9fe56c8
SHA256

2cf7cf0ac77b25eccc61fea38629e1a2de4547aa1d4eaae4f7885fdc0e2194a4
SHA512

ddb19e6e340cedd29ea5735caffd7f9e47825c904ce09896d6d6a0680262a371c597ac1e019b55bed12d424c2bc8df5a56940f68edaa3a74e361016abdfc41ad

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://zeegod.duckdns.org:9001

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

5 1980 wscript.exe

flow	pid	process
5	1980	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eVoucher.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\eVoucher.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-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2199625441-3471261906-229485034-1000\Software\Microsoft\Windows\CurrentVersion\Run\LMOXHX511V = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\eVoucher.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

Processes:

wscript.exe

description	pid	process	target process
PID 1980 wrote to memory of 2004	1980	wscript.exe	wscript.exe
PID 1980 wrote to memory of 2004	1980	wscript.exe	wscript.exe
PID 1980 wrote to memory of 2004	1980	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\eVoucher.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\JSkhHqaBqS.js"
2⤵
PID:2004

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

C:\Users\Admin\AppData\Roaming\JSkhHqaBqS.js
MD5
8ccd90975fcb67cfd9f799c1a57a005c

SHA1
22ec3e1d29bf2abf53c5a8b0ec5d13caadce145f

SHA256
24f109d42332b7fc72a66a97697642914865a27c0d7c495e0d5f6a4c6b63b04e

SHA512
e1f32f967ef742c1b9605f52cc9d7cd43b1b4658d9de94e38a2c69fc3e9b7055fc645b51ecc8f4d6acff45d3be17061ef1101975ced9e7489332770c1713fbe6

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