vjw0rm | 9cd0bbc73202c8351256436145e2c87fe42882059f33d68eb2212eac587197e7

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
07-07-2022 07:17

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General

Target

WesternUnionCompliancepdf.js
Size

28KB
MD5

f5adb4428e2fe6b9b397ae0e7a95ece6
SHA1

ffcee6adb3e4652372c70b9ccf4075776fedd44e
SHA256

9cd0bbc73202c8351256436145e2c87fe42882059f33d68eb2212eac587197e7
SHA512

611ba2911aec81de95f6d365f4614471145367061eef40f695e659676613cce56de9a0fa61b42179e8e089723e2bf02e0a136ada05d26b3f8b0bad857d4e8452

Score

10^/10

vjw0rm trojan worm

Malware Config

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm

Blocklisted process makes network request 17 IoCs

Processes:

wscript.exe

flow	pid	process
6	1524	wscript.exe
13	1524	wscript.exe
25	1524	wscript.exe
29	1524	wscript.exe
37	1524	wscript.exe
38	1524	wscript.exe
44	1524	wscript.exe
47	1524	wscript.exe
48	1524	wscript.exe
49	1524	wscript.exe
51	1524	wscript.exe
52	1524	wscript.exe
54	1524	wscript.exe
55	1524	wscript.exe
56	1524	wscript.exe
57	1524	wscript.exe
58	1524	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\WesternUnionCompliancepdf.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WesternUnionCompliancepdf.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 1524 wrote to memory of 1220	1524	wscript.exe	wscript.exe
PID 1524 wrote to memory of 1220	1524	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\WesternUnionCompliancepdf.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:1524

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\HnCBlANEKZ.js"
2⤵
PID:1220

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\HnCBlANEKZ.js
Filesize
8KB

MD5
396776d9c2fce3d6cd89a4b25253685c

SHA1
0037ed7e8c7ce8020c81fc2240f35894cd6040aa

SHA256
832bc0cd978dd790936ffcf9845e3cbf3a74fa47ea41dbf6900a7195d38c560e

SHA512
56af0a104104e1a7df4bb58974fd2a527d3559a4f5351607df92e6c0633d6e277a265cc390c7f68ab1b6706237235ae3f70aaaddd366430d28fd802878b455c2

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memory/1220-130-0x0000000000000000-mapping.dmp

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