vjw0rm | 796e03ed9e5304d0a2bc4855b89282b0fe9f4522df8e27a3923e26e13e1e257d

General

Target

IMG-17122021.js
Size

444KB
MD5

0df3a8c017448979574150a7ec49268d
SHA1

075ed41bbf2157cb4d1bfb64ad4029b30749294f
SHA256

796e03ed9e5304d0a2bc4855b89282b0fe9f4522df8e27a3923e26e13e1e257d
SHA512

a857399bea5264f8673ae9970ffea02402828b549b57e4f38fd50e8d5aa03d0c5d26f2e5ae72e98cc3cbf2a00d9da34587eed020a51f8989b88c18536360a48c

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 36 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
12	692	wscript.exe
13	3868	wscript.exe
22	3868	wscript.exe
23	692	wscript.exe
26	3868	wscript.exe
27	692	wscript.exe
30	3868	wscript.exe
31	692	wscript.exe
32	3868	wscript.exe
33	692	wscript.exe
34	3868	wscript.exe
35	692	wscript.exe
36	3868	wscript.exe
37	692	wscript.exe
38	3868	wscript.exe
40	692	wscript.exe
41	3868	wscript.exe
42	692	wscript.exe
43	3868	wscript.exe
44	692	wscript.exe
45	3868	wscript.exe
46	692	wscript.exe
47	3868	wscript.exe
48	692	wscript.exe
49	3868	wscript.exe
50	692	wscript.exe
51	3868	wscript.exe
52	692	wscript.exe
53	3868	wscript.exe
54	692	wscript.exe
55	3868	wscript.exe
56	692	wscript.exe
57	3868	wscript.exe
58	692	wscript.exe
59	3868	wscript.exe
60	692	wscript.exe

Drops startup file 4 IoCs

Processes:

wscript.exewscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IMG-17122021.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\IMG-17122021.js	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xFozEXCjGc.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xFozEXCjGc.js	wscript.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\R4J2SBXQ4G = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\IMG-17122021.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\xFozEXCjGc.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2361464256-2201551969-2316606395-1000\Software\Microsoft\Windows\CurrentVersion\Run	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

2368 schtasks.exe

pid	process
2368	schtasks.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 692 wrote to memory of 3868	692	wscript.exe	wscript.exe
PID 692 wrote to memory of 3868	692	wscript.exe	wscript.exe
PID 692 wrote to memory of 2368	692	wscript.exe	schtasks.exe
PID 692 wrote to memory of 2368	692	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\IMG-17122021.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:692
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\xFozEXCjGc.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:3868
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\IMG-17122021.js
  2⤵
  - Creates scheduled task(s)
  PID:2368

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

Scheduled Task

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\xFozEXCjGc.js

MD5
748521dc9913de2bebe7976db27ebbd4

SHA1
58d521b95cc87fe0b66301a405a3b7d05ec9c452

SHA256
49829dd56456af8482b5da5491fefcf10e556d3240644447d68d3d29c8b93b2f

SHA512
578d71c9d32a689466918ee940f0f8e3da95b7dea431e4ec70a1974be587996d74523bc55d36bf72fa1f604ec9995c696826a1c516fc5e3bf1807eecbc1b87bf

Download Submit
memory/2368-117-0x0000000000000000-mapping.dmp

Download
memory/3868-115-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads