vjw0rm | da04c2f890db89ea8d49585214a52b105eeb0c80e72c968e5147099bf411668e

Analysis

max time kernel
153s
max time network
159s
platform
windows10_x64
resource
win10-en-20211104
submitted
02/12/2021, 16:29

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General

Target
Paid-Invoice.js
Size 9KB
Sample211202-ty883adee9
SHA256 da04c2f890db89ea8d49585214a52b105eeb0c80e72c968e5147099bf411668e
MD5 5a78ce5d4ae0c6fb3dfc30056da39d20
SHA1 ee29630daf78a9dc5bbd0c279bd9c82f560536c3
SHA512 eaf467a84a4ebc49735fee3c68da4947eef08905b8a9752aaaf6f74b4561444fa4b8f232ce2f47621fa9d03ff614615494565ae9b10465899c2d8ebaa78d66fa
MD5 SHA1 SHA512

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 19 IoCs

flow	pid	Process
9	2904	wscript.exe
14	2904	wscript.exe
19	2904	wscript.exe
24	2904	wscript.exe
27	2904	wscript.exe
34	2904	wscript.exe
35	2904	wscript.exe
39	2904	wscript.exe
42	2904	wscript.exe
46	2904	wscript.exe
48	2904	wscript.exe
53	2904	wscript.exe
54	2904	wscript.exe
55	2904	wscript.exe
56	2904	wscript.exe
57	2904	wscript.exe
58	2904	wscript.exe
59	2904	wscript.exe
60	2904	wscript.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Paid-Invoice.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Paid-Invoice.js	wscript.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\JKEGCD8SGS = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Paid-Invoice.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

pid	Process
1908	schtasks.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2904 wrote to memory of 1908	2904	wscript.exe	70
PID 2904 wrote to memory of 1908	2904	wscript.exe	70

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Paid-Invoice.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2904
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\Paid-Invoice.js
  2⤵
  - Creates scheduled task(s)
  PID:1908

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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