vjw0rm | 3c85914030d8cdb4c41ca8cd0d24b785fef114aa2c1f9864feb028abd3d80356

Analysis

max time kernel
142s
max time network
147s
platform
windows7_x64
resource
win7-en-20211208
submitted
14-12-2021 16:03

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General

Target

8023_Payment_Copy.js
Size

62KB
MD5

f91ad741727a485b74a5cd3d0a32163a
SHA1

05fcc5bbd03cfbd35174d7d2ef991f345d167ad0
SHA256

3c85914030d8cdb4c41ca8cd0d24b785fef114aa2c1f9864feb028abd3d80356
SHA512

6762e1ae2c087e0937e107acc6dff7724eada47ddf861edca18df330fb6ab83fe1bf445b930ad2da1771a53f5f69ac0e0d57faa057080746b5fcd295b7f68151

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://wormming.duckdns.org:8023

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 1352 wscript.exe

flow	pid	process
5	1352	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\8023_Payment_Copy.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8023_Payment_Copy.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\MEBWY6QJMA = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\8023_Payment_Copy.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

568 schtasks.exe

pid	process
568	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1352 wrote to memory of 568	1352	wscript.exe	schtasks.exe
PID 1352 wrote to memory of 568	1352	wscript.exe	schtasks.exe
PID 1352 wrote to memory of 568	1352	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\8023_Payment_Copy.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1352

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\8023_Payment_Copy.js
2⤵
- Creates scheduled task(s)
PID:568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/568-54-0x0000000000000000-mapping.dmp

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