vjw0rm | d30e32d3d565251cb4dc97d235c0a28be7001ae7cf3f0682b22f1abae2d5c33a

Analysis

max time kernel
144s
max time network
146s
platform
windows10_x64
resource
win10-en-20211014
submitted
19-10-2021 15:49

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General

Target

D2M18C62N0A7.js
Size

81KB
MD5

1d0fb62f55da7a2ac3a2a55307911835
SHA1

eb71b7adbed8369e9de6ac61c10b568d1b919780
SHA256

d30e32d3d565251cb4dc97d235c0a28be7001ae7cf3f0682b22f1abae2d5c33a
SHA512

e7fb53813809b4812a34fa69809f1d5aab450909440032798bfd09fa72eaafaf1c6f175530385c438fbbd17601566e485640d805d1b286610cc0c0cf9520900d

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 18 IoCs

Processes:

wscript.exe

flow	pid	process
13	1944	wscript.exe
24	1944	wscript.exe
27	1944	wscript.exe
28	1944	wscript.exe
31	1944	wscript.exe
32	1944	wscript.exe
33	1944	wscript.exe
34	1944	wscript.exe
37	1944	wscript.exe
38	1944	wscript.exe
39	1944	wscript.exe
40	1944	wscript.exe
41	1944	wscript.exe
42	1944	wscript.exe
43	1944	wscript.exe
44	1944	wscript.exe
45	1944	wscript.exe
46	1944	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\D2M18C62N0A7.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\D2M18C62N0A7.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
Set value (str)	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run\JC4G62HNZ6 = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\D2M18C62N0A7.js'"	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-941723256-3451054534-3089625102-1000\Software\Microsoft\Windows\CurrentVersion\Run	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

2032 schtasks.exe

pid	process
2032	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1944 wrote to memory of 2032	1944	wscript.exe	schtasks.exe
PID 1944 wrote to memory of 2032	1944	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\D2M18C62N0A7.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1944

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\D2M18C62N0A7.js
2⤵
- Creates scheduled task(s)
PID:2032

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/2032-115-0x0000000000000000-mapping.dmp

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