vjw0rm | 5f05557ff4babe05f0d4842de6a67eb3e951af6c42a27b7fa9663b7ad18e5aba

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7v20201028
submitted
06-04-2021 17:28

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General

Target

ADP_Inv#003192.js
Size

3KB
MD5

84ff68b6acab9e2fcdc86c042be45439
SHA1

dff73b1866bcb0d42aca4bbf89bb6a909fa8b086
SHA256

5f05557ff4babe05f0d4842de6a67eb3e951af6c42a27b7fa9663b7ad18e5aba
SHA512

d5b57189a3a108774982d18b86f8c3f7ed510b7595d31cd8e268a0804f7c903a76143d970e9df77235760cefe75ef9ac94594bffb7c07d19b50c5af2dcb63651

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 1 IoCs

Processes:

wscript.exe

flow pid process

6 1432 wscript.exe

flow	pid	process
6	1432	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\ADP_Inv#003192.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ADP_Inv#003192.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\8XT6PUWJDP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\ADP_Inv#003192.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

1664 schtasks.exe

pid	process
1664	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1432 wrote to memory of 1664	1432	wscript.exe	schtasks.exe
PID 1432 wrote to memory of 1664	1432	wscript.exe	schtasks.exe
PID 1432 wrote to memory of 1664	1432	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ADP_Inv#003192.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1432

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\ADP_Inv#003192.js
2⤵
- Creates scheduled task(s)
PID:1664

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

memory/1444-3-0x000007FEF61D0000-0x000007FEF644A000-memory.dmp

Filesize
2.5MB

Download
memory/1664-2-0x0000000000000000-mapping.dmp

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