vjw0rm | 70c2cfb9f3c784bbae7c67daa88805b6989beb2a502ef7574c08e62fccd794d0

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
16-06-2022 10:48

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General

Target

File 3.js
Size

29KB
MD5

ab13afc905659d77f0f29094be1a0374
SHA1

f1104c4b561e7a13caaff3023638e1fd50e10830
SHA256

70c2cfb9f3c784bbae7c67daa88805b6989beb2a502ef7574c08e62fccd794d0
SHA512

9a1d213aaa741c8950e71b21445bb062a505a123cd4c17746ef43d3454cb999b2c2614ac5ff6826c3269110016be88d44c1532462c0caef1fe994184f65cf91d

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 16 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
6	1736	wscript.exe
8	2792	wscript.exe
13	2792	wscript.exe
20	2792	wscript.exe
31	2792	wscript.exe
34	2792	wscript.exe
38	2792	wscript.exe
43	2792	wscript.exe
49	2792	wscript.exe
50	2792	wscript.exe
51	2792	wscript.exe
54	2792	wscript.exe
55	2792	wscript.exe
56	2792	wscript.exe
57	2792	wscript.exe
58	2792	wscript.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	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\jDamYSjgcH.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jDamYSjgcH.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-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\jDamYSjgcH.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

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1736 wrote to memory of 2792	1736	wscript.exe	wscript.exe
PID 1736 wrote to memory of 2792	1736	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\File 3.js"
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1736
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\jDamYSjgcH.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:2792

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
10KB

MD5
5fec9251c205111e712d51790d02fad7

SHA1
be7523fc11376392b8af5aa77d5cb7937f2e0dac

SHA256
c35aee064709247cfd030eb2ce85e3eaad52b9b0cb6f75e027b3ee9008950242

SHA512
a3d3284785258186c13e5a43569fc59d90c0c9541a55e6ce8a3d4d8984afcd46967ed6edf1be17efd005614fc098ce314dda57352bbc83f847dafb40dc9dd8f1

Download Submit
memory/2792-130-0x0000000000000000-mapping.dmp

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