vjw0rm | 6eacb035edac06e5cefb1e070b3ed350b0c33090f48ba4e34fd920454eb61729

Analysis

max time kernel
137s
max time network
150s
platform
windows7_x64
resource
win7-20220414-en
submitted
20-06-2022 08:15

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General

Target

sYCuOOjDOl_vjstub.js
Size

29KB
MD5

dac9ed798f79a40ef59756c710f61593
SHA1

199bfa38a09181e9396cef4d3b29b0762c5ba987
SHA256

94036cd95dde4d8ec66e76a24755a15ac474c64b12e74ec87d29ff9b8a889160
SHA512

ec5119052e545e0246234b51777bc3a1a3a64ea0c9a3eab98b948896235bd5a49eca1616788636dc09ddd8328382f00b03e5c39139972cff2198667baf5bbcef

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 19 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
5	1936	wscript.exe
6	2008	wscript.exe
7	1936	wscript.exe
9	1936	wscript.exe
10	2008	wscript.exe
13	1936	wscript.exe
14	1936	wscript.exe
15	1936	wscript.exe
17	2008	wscript.exe
19	1936	wscript.exe
20	1936	wscript.exe
21	2008	wscript.exe
23	1936	wscript.exe
25	1936	wscript.exe
26	1936	wscript.exe
28	2008	wscript.exe
29	1936	wscript.exe
32	1936	wscript.exe
33	2008	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\egqENcOXOr.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\egqENcOXOr.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-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\egqENcOXOr.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 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 2008 wrote to memory of 1936	2008	wscript.exe	wscript.exe
PID 2008 wrote to memory of 1936	2008	wscript.exe	wscript.exe
PID 2008 wrote to memory of 1936	2008	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\sYCuOOjDOl_vjstub.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:2008
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\egqENcOXOr.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1936

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
10KB

MD5
dffdb0fc6b534c658575b72bfd4826ae

SHA1
d6cc3039c628b6d9e8a137933fa953e785a9ef0b

SHA256
7e4297ebdde73b716fafb213529d79007e6825b786a471ca7e5a52024fddb939

SHA512
c9f4be68cc09ad027a65745233363940ed7ee7b82ecf919096336ddfec90932ad707ec30089e40f8e2918df2b14f400c96d3d854c0d89ae56897e06e849637ae

Download Submit
memory/1936-55-0x0000000000000000-mapping.dmp

Download
memory/2008-54-0x000007FEFBA41000-0x000007FEFBA43000-memory.dmp

Filesize
8KB

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