vjw0rm | dd5c0817458afce55a241b8cb384d8bd4124da4f41710a0af87fa7f249c649ca

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7v20201028
submitted
27-03-2021 15:28

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General

Target

3030098_Order_Receipt.js
Size

102KB
MD5

da505963475651e7e73d350b75a3477e
SHA1

3446233aeaf07f32ded982387d965814c4f8eb7d
SHA256

dd5c0817458afce55a241b8cb384d8bd4124da4f41710a0af87fa7f249c649ca
SHA512

51e4f364bdcc6399df7f0c4c158f34bb704c1262dda88e7b9385e7d0e8f5d97663e9be30feb7c80b960ca995544e16c1b5cf97967b99d908ee5ad667724b99ce

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

5 1740 wscript.exe

flow	pid	process
5	1740	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\3030098_Order_Receipt.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3030098_Order_Receipt.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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Windows\CurrentVersion\Run\VFYLK8FY3G = "'C:\\Users\\Admin\\AppData\\Local\\Temp\\3030098_Order_Receipt.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

1724 schtasks.exe

pid	process
1724	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1740 wrote to memory of 1724	1740	wscript.exe	schtasks.exe
PID 1740 wrote to memory of 1724	1740	wscript.exe	schtasks.exe
PID 1740 wrote to memory of 1724	1740	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\3030098_Order_Receipt.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1740

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr 'C:\Users\Admin\AppData\Local\Temp\3030098_Order_Receipt.js
2⤵
- Creates scheduled task(s)
PID:1724

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/968-4-0x000007FEF7730000-0x000007FEF79AA000-memory.dmp

Filesize
2.5MB

Download
memory/1724-3-0x0000000000000000-mapping.dmp

Download
memory/1740-2-0x000007FEFBDE1000-0x000007FEFBDE3000-memory.dmp

Filesize
8KB

Download