vjw0rm | f92c0c05477e65b58a98076e65c7d0ff486486c6965f311f387fee950908695d

Analysis

max time kernel
147s
max time network
159s
platform
windows10_x64
resource
win10v20210408
submitted
18-06-2021 15:01

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General

Target

INVOICE ADP#06172.js
Size

3KB
MD5

3035bdee68c6e1bb1eafa8bcf6509971
SHA1

7bc78682fe79104c4f8dc4cf5353f572b5957cb2
SHA256

f92c0c05477e65b58a98076e65c7d0ff486486c6965f311f387fee950908695d
SHA512

a0326d62588590b6499211b0cb76505dc102fe20afb9e603d2a2476a68397ed1d54ec667a0011d33a2c62dbd113d35b55076968d2d67c7c666bdd2bf267de656

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

7 3128 wscript.exe

flow	pid	process
7	3128	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\INVOICE ADP#06172.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\INVOICE ADP#06172.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-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\16L16UKFB5 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\INVOICE ADP#06172.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\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

1544 schtasks.exe

pid	process
1544	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 3128 wrote to memory of 1544	3128	wscript.exe	schtasks.exe
PID 3128 wrote to memory of 1544	3128	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\INVOICE ADP#06172.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3128

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\INVOICE ADP#06172.js
2⤵
- Creates scheduled task(s)
PID:1544

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/1544-114-0x0000000000000000-mapping.dmp

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