vjw0rm | 8f5181621b7256b4db75d16e9f99a6e696155f0b516b01177b67d5ad23acfe3f

Analysis

max time kernel
145s
max time network
154s
platform
windows7_x64
resource
win7-en-20211208
submitted
02-02-2022 08:30

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General

Target

RGDWPBDPM728HJNS5053.js
Size

13KB
MD5

c5ec831cc7614d4c4788432f4ab26c2a
SHA1

96118b4a23d05f840d4fe8094b3653a9edef2393
SHA256

8f5181621b7256b4db75d16e9f99a6e696155f0b516b01177b67d5ad23acfe3f
SHA512

9f92b9cee92a51f5f868147742ff9d1bde95065921a1f71810997abfb95ac3cd1fc9c1b33d432501f9ed8924ebcdcf059dcb01de84935222c760cf1f2c2331ba

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 5 IoCs

Processes:

wscript.exe

flow pid process

5 808 wscript.exe
6 808 wscript.exe
7 808 wscript.exe
9 808 wscript.exe
10 808 wscript.exe

flow	pid	process
5	808	wscript.exe
6	808	wscript.exe
7	808	wscript.exe
9	808	wscript.exe
10	808	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\RGDWPBDPM728HJNS5053.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RGDWPBDPM728HJNS5053.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-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2329389628-4064185017-3901522362-1000\Software\Microsoft\Windows\CurrentVersion\Run\4TQA81RBOA = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RGDWPBDPM728HJNS5053.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

976 schtasks.exe

pid	process
976	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 808 wrote to memory of 976	808	wscript.exe	schtasks.exe
PID 808 wrote to memory of 976	808	wscript.exe	schtasks.exe
PID 808 wrote to memory of 976	808	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\RGDWPBDPM728HJNS5053.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:808

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\RGDWPBDPM728HJNS5053.js
2⤵
- Creates scheduled task(s)
PID:976

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/808-55-0x000007FEFBF31000-0x000007FEFBF33000-memory.dmp

Filesize
8KB

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