vjw0rm | 91b13af3fd1eff3cf15972acbf21ff6984c4d5e257a2b5c3797812a6005f9344

Analysis

max time kernel
147s
max time network
147s
platform
windows10_x64
resource
win10-en-20211104
submitted
30-11-2021 14:50

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General

Target

WSQUOMInvoice008.js
Size

9KB
MD5

6f554c122b43c9780a60a899f5300a07
SHA1

b2b8d0759bfefd12a140d92a84e1a4b707ed2e59
SHA256

91b13af3fd1eff3cf15972acbf21ff6984c4d5e257a2b5c3797812a6005f9344
SHA512

358e6195abf7213d2d7fd848e1a3dde059a8f47a48b3de8780b715ae602441e0598ae578d050939e1d9daa469951513137e6dc080fcf6db0346b338bdac259bc

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://37.0.10.5:8020

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 2672 wscript.exe

flow	pid	process
8	2672	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\WSQUOMInvoice008.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WSQUOMInvoice008.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-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\QHDG14D0RM = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WSQUOMInvoice008.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

2264 schtasks.exe

pid	process
2264	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2672 wrote to memory of 2264	2672	wscript.exe	schtasks.exe
PID 2672 wrote to memory of 2264	2672	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\WSQUOMInvoice008.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2672

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\WSQUOMInvoice008.js
2⤵
- Creates scheduled task(s)
PID:2264

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/2264-118-0x0000000000000000-mapping.dmp

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