vjw0rm | 69ed29c3223ea8445fa3d04daf3f927b568b33787d1cd5e5876f4f826cf4e3cf

Analysis

max time kernel
118s
max time network
149s
platform
windows10_x64
resource
win10v20201028
submitted
29-03-2021 15:49

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General

Target

XZMNKOPM.js
Size

9KB
MD5

7c48ff776e798cbe5709a4d114b4dcec
SHA1

1031738810ed792be345f81983a1bc8cf5750634
SHA256

69ed29c3223ea8445fa3d04daf3f927b568b33787d1cd5e5876f4f826cf4e3cf
SHA512

80bc074ffc1986295b249b26ef184358f6ac03bb1a580d4b83fcf07060a378caaad7b819829388528f5642603a163a1cc80988047e440faf8ac6f5c4ae408448

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

16 1908 wscript.exe

flow	pid	process
16	1908	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\XZMNKOPM.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XZMNKOPM.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-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Software\Microsoft\Windows\CurrentVersion\Run\0KL1H0367C = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\XZMNKOPM.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

3032 schtasks.exe

pid	process
3032	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1908 wrote to memory of 3032	1908	wscript.exe	schtasks.exe
PID 1908 wrote to memory of 3032	1908	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\XZMNKOPM.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1908

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\XZMNKOPM.js
2⤵
- Creates scheduled task(s)
PID:3032

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/3032-2-0x0000000000000000-mapping.dmp

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