vjw0rm | 6eacb035edac06e5cefb1e070b3ed350b0c33090f48ba4e34fd920454eb61729

General

Target

MgBMOjoQWC_hwstub.js
Size

51KB
MD5

0c7657296a9994e6446ff500bc1b76c3
SHA1

bfdc4584c89faa7f3356549494331ccc8497ab33
SHA256

692a8be00d69e5d0782766f270046aa871fea041e63d125da9e1252b135623f3
SHA512

8549c221d3316d3a57feb5c4bdca51ae504f5479e22b83150a9eca82fb0b5f8ef8b2aa134d2b96c5bef42a170cc7c4dc8099606f71fabcd490732f7b8926213d

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
4	2100	wscript.exe
5	1280	wscript.exe
10	1280	wscript.exe
12	1280	wscript.exe
13	2100	wscript.exe
30	2100	wscript.exe
31	1280	wscript.exe
32	1280	wscript.exe
39	1280	wscript.exe
40	2100	wscript.exe
47	1280	wscript.exe
50	2100	wscript.exe
51	1280	wscript.exe
57	1280	wscript.exe
58	2100	wscript.exe
59	1280	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-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation wscript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	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\hwo1.vbs	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hwo1.vbs	wscript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xkJOOSCzhz.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\xkJOOSCzhz.js	wscript.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exewscript.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hwo1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\hwo1.vbs\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\xkJOOSCzhz.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\software\microsoft\windows\currentversion\run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\hwo1 = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\hwo1.vbs\""	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 4 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 4640 wrote to memory of 1280	4640	wscript.exe	wscript.exe
PID 4640 wrote to memory of 1280	4640	wscript.exe	wscript.exe
PID 4640 wrote to memory of 2100	4640	wscript.exe	wscript.exe
PID 4640 wrote to memory of 2100	4640	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\MgBMOjoQWC_hwstub.js
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4640
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\xkJOOSCzhz.js"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:1280
- C:\Windows\System32\wscript.exe
  "C:\Windows\System32\wscript.exe" "C:\Users\Admin\AppData\Roaming\hwo1.vbs"
  2⤵
  - Blocklisted process makes network request
  - Drops startup file
  - Adds Run key to start application
  PID:2100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\hwo1.vbs

Filesize
13KB

MD5
0fa22927ed90ae0bfbc0fbc979d566ff

SHA1
c6562835566afe7eded525f68a0cfdf6f82b4a0a

SHA256
9ec1848a60e25d9bf6f2d3dd2e607e269a259925b143ea20ee7dfbe58f7152e7

SHA512
8692696d841a50b811e21384ee040cbeb478cfe5a2f093ed7b6d1869ae910c590ad940771d9f95a76880f4c25d637d4f29fbe14e2c16b6a424e54a48812b7203

Download Submit
C:\Users\Admin\AppData\Roaming\xkJOOSCzhz.js

Filesize
10KB

MD5
dffdb0fc6b534c658575b72bfd4826ae

SHA1
d6cc3039c628b6d9e8a137933fa953e785a9ef0b

SHA256
7e4297ebdde73b716fafb213529d79007e6825b786a471ca7e5a52024fddb939

SHA512
c9f4be68cc09ad027a65745233363940ed7ee7b82ecf919096336ddfec90932ad707ec30089e40f8e2918df2b14f400c96d3d854c0d89ae56897e06e849637ae

Download Submit
memory/1280-130-0x0000000000000000-mapping.dmp

Download
memory/2100-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads