vjw0rm | 122fd7c3913dfaba9361882a48ad391f14dfcaa978d603e80620ddc204eb73b0

General

Target

H6A4X3S1N9Z.js
Size

81KB
MD5

a31982d00a3a562bf83d278381faf93f
SHA1

91f492ec2722df91bd4c97a1eb4446e62f9822a1
SHA256

122fd7c3913dfaba9361882a48ad391f14dfcaa978d603e80620ddc204eb73b0
SHA512

8aed8e36b4ca759a78bab195e9112f5a3bb643b7266470684c93f1abb329406e334e0553bee86b1ce43cf1ba1df22e3cde5cfeeab5e6115458a693487cc0269f

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 18 IoCs

Processes:

wscript.exe

flow	pid	process
7	1660	wscript.exe
9	1660	wscript.exe
10	1660	wscript.exe
12	1660	wscript.exe
13	1660	wscript.exe
14	1660	wscript.exe
16	1660	wscript.exe
17	1660	wscript.exe
18	1660	wscript.exe
20	1660	wscript.exe
21	1660	wscript.exe
22	1660	wscript.exe
24	1660	wscript.exe
25	1660	wscript.exe
26	1660	wscript.exe
28	1660	wscript.exe
29	1660	wscript.exe
30	1660	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\H6A4X3S1N9Z.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\H6A4X3S1N9Z.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-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\RZJR7TBG32 = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\H6A4X3S1N9Z.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

1124 schtasks.exe

pid	process
1124	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1660 wrote to memory of 1124	1660	wscript.exe	schtasks.exe
PID 1660 wrote to memory of 1124	1660	wscript.exe	schtasks.exe
PID 1660 wrote to memory of 1124	1660	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\H6A4X3S1N9Z.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1660

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\H6A4X3S1N9Z.js
2⤵
- Creates scheduled task(s)
PID:1124

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1124-61-0x0000000000000000-mapping.dmp

Download
memory/1660-60-0x000007FEFC4A1000-0x000007FEFC4A3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads