vjw0rm | 5e691b3588f4bcffbe60656a23ee0bb46081c4b7d18d0f600af6508a2dcf7768

General

Target

Faktura 22062022105025.js
Size

453KB
MD5

e0ee6501ff7c833e22e405f0a3add213
SHA1

bb2685e7c70428de5848f1b1f53d5b687b9610f8
SHA256

5e691b3588f4bcffbe60656a23ee0bb46081c4b7d18d0f600af6508a2dcf7768
SHA512

f3c6eae4a7b33e86c167d2fb3cef9437bb3d3f9beee3c105e4693facca06b38e60322f0e285b2b1d9753d42c1450ff9d5302365c3d81e28f6687bf707a49bdf4

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.exe

flow	pid	process
5	2820	wscript.exe
9	2820	wscript.exe
17	2820	wscript.exe
25	2820	wscript.exe
32	2820	wscript.exe
39	2820	wscript.exe
45	2820	wscript.exe
47	2820	wscript.exe
48	2820	wscript.exe
51	2820	wscript.exe
54	2820	wscript.exe
55	2820	wscript.exe
56	2820	wscript.exe
57	2820	wscript.exe
58	2820	wscript.exe
59	2820	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\hHhUMQQaEJ.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\hHhUMQQaEJ.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\\hHhUMQQaEJ.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\server\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
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\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\dll\jvm.pdb	java.exe
File opened for modification	C:\Program Files\Java\jre1.8.0_66\bin\server\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 2176 wrote to memory of 2820	2176	wscript.exe	wscript.exe
PID 2176 wrote to memory of 2820	2176	wscript.exe	wscript.exe
PID 2176 wrote to memory of 3340	2176	wscript.exe	java.exe
PID 2176 wrote to memory of 3340	2176	wscript.exe	java.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\Faktura 22062022105025.js"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\hHhUMQQaEJ.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:2820

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:3340

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

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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\hHhUMQQaEJ.js
Filesize
58KB

MD5
6e19c9be0455699d39ecac41f332827c

SHA1
ac1be0bad3bf9c19d5927408809dd7c70ce7ac26

SHA256
5bc218e50e5fd2027ff0467989a4972c63a1478eae5ae918728d3b4213df202e

SHA512
05ba615f7444271a30da4ffb93faed0b88f4897338ca891df8e834cb79973fdcdd534a8d398757346a7e33de761316d0ae7764abfda3bd9b8170d695aa7ca59d

Download Submit
memory/2820-130-0x0000000000000000-mapping.dmp

Download
memory/3340-132-0x0000000000000000-mapping.dmp

Download
memory/3340-138-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-151-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-154-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-155-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-159-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-161-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-162-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download
memory/3340-163-0x0000000003140000-0x0000000004140000-memory.dmp

Filesize
16.0MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads