vjw0rm | 5f75796aef27eae56a003ff8f88d6056915da8c83ac37e4556a685984d1cf23e

Analysis

max time kernel
139s
max time network
146s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
06-04-2023 18:41

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General

Target

vicom-040623.js
Size

3KB
MD5

dee56e30a88b69d7f96c6018d4ca0fd1
SHA1

bab144a082113b9b4f1b958a7c4a14dc1562eb47
SHA256

5f75796aef27eae56a003ff8f88d6056915da8c83ac37e4556a685984d1cf23e
SHA512

a010b4dd37ccb65b45d192936142f0f2114c7ad63dd415c212daad83f658ea77a17e5ddbc5dfea8cbf73f3efd40861f5b5de115ea4b15ce0f50f852d6104fed8

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://198.12.123.17:8902

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 1 IoCs

flow	pid	Process
3	1296	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\vicom-040623.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\vicom-040623.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-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3948302646-268491222-1934009652-1000\Software\Microsoft\Windows\CurrentVersion\Run\PN5T0ZPOXT = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\vicom-040623.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
1072	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1296 wrote to memory of 1072	1296	wscript.exe	29
PID 1296 wrote to memory of 1072	1296	wscript.exe	29
PID 1296 wrote to memory of 1072	1296	wscript.exe	29

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\vicom-040623.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\vicom-040623.js
  2⤵
  - Creates scheduled task(s)
  PID:1072

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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