vjw0rm | 0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95

Analysis

max time kernel
122s
max time network
124s
platform
windows7_x64
resource
win7v20210410
submitted
02-08-2021 20:11

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General

Target

0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.js
Size

6KB
MD5

da985273a6ca8dfb6a17ff26956a2e71
SHA1

cda0aff65ed3c91b4788f2f7216831cb1ed563ac
SHA256

0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95
SHA512

e0220201e4e60f7b3b88d6908f4c00cadf8c2fdc6dedaa895ac95b4dbee3de8525b020366840d01701a4719f13e4b0a9b4fbcc9e899e8b5d2e278b265e1993bf

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

6 1052 wscript.exe

flow	pid	process
6	1052	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\0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.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-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2513283230-931923277-594887482-1000\Software\Microsoft\Windows\CurrentVersion\Run\MX1CAYIRN3 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.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

1448 schtasks.exe

pid	process
1448	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1052 wrote to memory of 1448	1052	wscript.exe	schtasks.exe
PID 1052 wrote to memory of 1448	1052	wscript.exe	schtasks.exe
PID 1052 wrote to memory of 1448	1052	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1052

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\0aa2dd1f59a1d55cd5021244c1d7383cadbef5363c22718a4d9e47610af30d95.js
2⤵
- Creates scheduled task(s)
PID:1448

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/1448-60-0x0000000000000000-mapping.dmp

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