vjw0rm | 498156166a19ca4a2f60475444a7dba94441f4a3839e9e98d0e7d9aa970fc7fa

Analysis

max time kernel
154s
max time network
157s
platform
windows7_x64
resource
win7-en-20211208
submitted
07-02-2022 16:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

RTK009ENF.js
Size

61KB
MD5

4aeac345ff0d52f7ea2e9a9b9de73cb4
SHA1

cb3c9866359b2db03f80f9715cc84a3d9e743f12
SHA256

16ee8787395039445c472df4c45834ac3e6299f753764dbe27b9bc031e383a9b
SHA512

266a5a3ac9c6c88325f5234ad16918db5b936aeeffed41d003d340a3c24b05974fb78bb7575f00bff50b6d01da2a0b57d548d4bd51b8691540d982249c7bd6c9

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 17 IoCs

Processes:

wscript.exe

flow	pid	process
5	1460	wscript.exe
6	1460	wscript.exe
7	1460	wscript.exe
9	1460	wscript.exe
10	1460	wscript.exe
11	1460	wscript.exe
13	1460	wscript.exe
14	1460	wscript.exe
15	1460	wscript.exe
17	1460	wscript.exe
18	1460	wscript.exe
19	1460	wscript.exe
21	1460	wscript.exe
22	1460	wscript.exe
23	1460	wscript.exe
25	1460	wscript.exe
26	1460	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\RTK009ENF.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RTK009ENF.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\Q0K8KAC1S1 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\RTK009ENF.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

1212 schtasks.exe

pid	process
1212	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1460 wrote to memory of 1212	1460	wscript.exe	schtasks.exe
PID 1460 wrote to memory of 1212	1460	wscript.exe	schtasks.exe
PID 1460 wrote to memory of 1212	1460	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\RTK009ENF.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\RTK009ENF.js
  2⤵
  - Creates scheduled task(s)
  PID:1212

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

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1460-54-0x000007FEFC3C1000-0x000007FEFC3C3000-memory.dmp

Filesize
8KB

Download