vjw0rm | da60503512af869134e5698522fd48d794e650e0749feaf07d120b17f4cccd73

Analysis

max time kernel
147s
max time network
152s
platform
windows10_x64
resource
win10v20210410
submitted
24-08-2021 05:01

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General

Target

ISO certification-0.js
Size

15KB
MD5

6c8cb6d8a307774cdd5229cae0a74fa2
SHA1

1dae1ca15bdc9eb2d3250f45b612d852c7caefda
SHA256

da60503512af869134e5698522fd48d794e650e0749feaf07d120b17f4cccd73
SHA512

a494e3240297489819f209c86a98361b27174e853fec3eff9d6959ad8a10efdc6c5f956d668349c8b4a46d3ac1a48fd89426e7e36de33eca74902047d89aca4d

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

8 772 wscript.exe
Drops startup file 1 IoCs

Processes:

wscript.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ISO certification-0.js wscript.exe

flow	pid	process
8	772	wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ISO certification-0.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-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\P7EKOWB6GH = "\"C:\\ProgramData\\ISO certification-0.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

2348 schtasks.exe

pid	process
2348	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 772 wrote to memory of 2348	772	wscript.exe	schtasks.exe
PID 772 wrote to memory of 2348	772	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\ISO certification-0.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:772

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\ProgramData\ISO certification-0.js
2⤵
- Creates scheduled task(s)
PID:2348

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

Replay Monitor

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Downloads

memory/2348-114-0x0000000000000000-mapping.dmp

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