vjw0rm | 1e24a6a3246bd6d1af9c3a90880b4518afe0bbaa40f8f922138e1d3f8a4f02de

General

Target

Custom Clearance Doc. AWB#5305323204643.js
Size

616KB
MD5

33d87ba5f5667d83a06e8794e464e6e8
SHA1

b0b8207b5804987067391f6192b8c233dfccbae7
SHA256

1e24a6a3246bd6d1af9c3a90880b4518afe0bbaa40f8f922138e1d3f8a4f02de
SHA512

1ba63984598b1b6400e915dd026bd45e3d12553e7202c6577ca8f0d7f0e6215127ca3a4063a6256f18f956a5ee0f7580d9908084f191f6c8a94cf328fde07e88

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 14 IoCs

Processes:

wscript.exe

flow	pid	process
8	2832	wscript.exe
35	2832	wscript.exe
38	2832	wscript.exe
40	2832	wscript.exe
41	2832	wscript.exe
44	2832	wscript.exe
46	2832	wscript.exe
47	2832	wscript.exe
48	2832	wscript.exe
49	2832	wscript.exe
50	2832	wscript.exe
51	2832	wscript.exe
52	2832	wscript.exe
53	2832	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-1-5-21-3751123196-3323558407-1869646069-1000\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\LfLwlUUXXC.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\LfLwlUUXXC.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-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\LfLwlUUXXC.js\""	wscript.exe

Drops file in Program Files directory 12 IoCs

Processes:

java.exe

description	ioc	process
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\symbols\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\dll\ntdll.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\symbols\dll\ntdll.pdb	java.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 2396 wrote to memory of 2832	2396	wscript.exe	wscript.exe
PID 2396 wrote to memory of 2832	2396	wscript.exe	wscript.exe
PID 2396 wrote to memory of 2516	2396	wscript.exe	java.exe
PID 2396 wrote to memory of 2516	2396	wscript.exe	java.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Custom Clearance Doc. AWB#5305323204643.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2396

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\LfLwlUUXXC.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:2832

C:\Program Files\Java\jre1.8.0_66\bin\java.exe
"C:\Program Files\Java\jre1.8.0_66\bin\java.exe" -jar "C:\Users\Admin\AppData\Local\Temp\SM.jar"
2⤵
- Drops file in Program Files directory
PID:2516

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\SM.jar
Filesize
164KB

MD5
edf0e95033cb0df96be06c5088142288

SHA1
3972af92633203e7857ec0e4ae65246b32c83539

SHA256
9712cb8921bc1aaf24f86d6a82ce59a332f6ad04eb1af0414f9bd51e0f35e049

SHA512
b7086f0880328bfbb11f6a48a95bde9718318bec9a66c4d00dc16384a1c7ccae97685c7e50d8278c3a267431032d418c61acc9a9ca926d0bd948b79c722a562a

Download Submit
C:\Users\Admin\AppData\Roaming\LfLwlUUXXC.js
Filesize
117KB

MD5
5ec7e975e42079dacb58ad5e712df35f

SHA1
6c963b465c7ddc9081add19f0c99eac3e969f819

SHA256
4be6ef286e027bd596340d08cc8640d213cff7fbf93638a2ccee267fa42512b8

SHA512
ca38464e394d43a8320baa24163cf3921a66ce3a87a8f4da7d20718ab6248319cb6d08de61509b81061d353da23033412fa9b121c14c2c32df5aa2859a7e13a8

Download Submit
memory/2516-132-0x0000000000000000-mapping.dmp

Download
memory/2516-141-0x00000000029A0000-0x00000000039A0000-memory.dmp

Filesize
16.0MB

Download
memory/2516-158-0x00000000029A0000-0x00000000039A0000-memory.dmp

Filesize
16.0MB

Download
memory/2516-159-0x00000000029A0000-0x00000000039A0000-memory.dmp

Filesize
16.0MB

Download
memory/2516-160-0x00000000029A0000-0x00000000039A0000-memory.dmp

Filesize
16.0MB

Download
memory/2832-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads