vjw0rm | 903841d2474ad9d19ef2147cbb393321d142477b52fa628c46cfbd0214e0f3ff

Analysis

max time kernel
141s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
28-06-2022 10:10

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General

Target

PO202204-VIS015.js
Size

45KB
MD5

c468449ee706347ee77ba75f21c2855c
SHA1

99fe748710ee03b11adee5d7711a583a39b67d82
SHA256

903841d2474ad9d19ef2147cbb393321d142477b52fa628c46cfbd0214e0f3ff
SHA512

ea63bf2914649ae85e09c277cd144c02ecf9ac420afd6f0cd480a206a306f3e58c052df35fded442e9d3912a5378e6d63365d47027d4bb15a5f72ff20af54c0e

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 17 IoCs

Processes:

wscript.exewscript.exe

flow	pid	process
6	2900	wscript.exe
8	1536	wscript.exe
16	1536	wscript.exe
21	1536	wscript.exe
26	1536	wscript.exe
32	1536	wscript.exe
33	1536	wscript.exe
44	1536	wscript.exe
47	1536	wscript.exe
48	1536	wscript.exe
49	1536	wscript.exe
51	1536	wscript.exe
52	1536	wscript.exe
53	1536	wscript.exe
54	1536	wscript.exe
55	1536	wscript.exe
56	1536	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\bAZifrDtEB.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bAZifrDtEB.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\\bAZifrDtEB.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 2900 wrote to memory of 1536	2900	wscript.exe	wscript.exe
PID 2900 wrote to memory of 1536	2900	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO202204-VIS015.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2900

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\bAZifrDtEB.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:1536

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\bAZifrDtEB.js
Filesize
17KB

MD5
c985deccdb388fb26c79239fff23c852

SHA1
60fecf190f59e8f14eba7e1b0c95b8427bcb7179

SHA256
3577498781b4836b33b303d8af897cf508a0b29e6349d31b982cae5b44e4e944

SHA512
1858da87b49d3ef7d4bc3781faa2574b5428e34dd3ddf764123d7629900fefd3bf7b295fa80a54abce4410f7195c5a02350ff048fa6be6638f2fb7d62cf9e59e

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memory/1536-130-0x0000000000000000-mapping.dmp

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