vjw0rm | b1bef9b67f5d2d8e4bf872fcb4a9f3776c1e06fde5711070a1dc634fae637e35

Analysis

max time kernel
150s
max time network
156s
platform
windows7_x64
resource
win7-en-20211208
submitted
20-12-2021 17:57

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General

Target

WTRMAOSP.js
Size

9KB
MD5

09f5d89a8c21d1c7602463e423c07b8a
SHA1

30968c850326a008743fbc5639c60ce8371bba7d
SHA256

d4b12da63e87619d8a738dbedcae1ec2af9372a402d54df3b5f3006a649b566d
SHA512

dc1259774c73452e4f43ff873b80f7895de35e118d3ad0cc2b5b3fc47f829d9fd5e2dc6bcd48abd64614f275a8b2e45e0ffeff74a6476b98584d80141c86fb31

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://moneyworm.duckdns.org:8756

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 1504 wscript.exe

flow	pid	process
5	1504	wscript.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WTRMAOSP.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WTRMAOSP.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-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\3W88SBC8T0 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\WTRMAOSP.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

1028 schtasks.exe

pid	process
1028	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1504 wrote to memory of 1028	1504	wscript.exe	schtasks.exe
PID 1504 wrote to memory of 1028	1504	wscript.exe	schtasks.exe
PID 1504 wrote to memory of 1028	1504	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\WTRMAOSP.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\WTRMAOSP.js
  2⤵
  - Creates scheduled task(s)
  PID:1028

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

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Downloads

memory/1028-54-0x0000000000000000-mapping.dmp

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