vjw0rm | 9f3cce73e846d61935128bfbd96014818b9be2d800d3fb13d5649f5eec38df1b

Analysis

max time kernel
149s
max time network
207s
platform
windows7_x64
resource
win7v20210408
submitted
30-08-2021 06:23

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General

Target

Invoice-7.js
Size

26KB
MD5

0518c4dcdd42ff9853e7698488b73128
SHA1

2207755fb06fae33421089558f89e93912dbe041
SHA256

9f3cce73e846d61935128bfbd96014818b9be2d800d3fb13d5649f5eec38df1b
SHA512

0d0457f52dedd5c3b24e7d7c0700562c4df3e8a260f96d5e83890a8008a33c3ee00f392697f10fcab5c0c3599dd247042d6713bafd94653cce4ab9165b59e31d

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
8	1980	wscript.exe
9	472	wscript.exe
10	472	wscript.exe
12	472	wscript.exe
14	472	wscript.exe
15	472	wscript.exe
16	472	wscript.exe
18	472	wscript.exe
19	472	wscript.exe
20	472	wscript.exe
23	472	wscript.exe
25	472	wscript.exe
26	472	wscript.exe
29	472	wscript.exe
30	472	wscript.exe
31	472	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\BzcPYMcTBP.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\BzcPYMcTBP.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
Set value (str)	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run\SEJOKAOI5S = "\"C:\\Users\\Admin\\AppData\\Roaming\\BzcPYMcTBP.js\""	wscript.exe
Key created	\REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Software\Microsoft\Windows\CurrentVersion\Run	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 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1980 wrote to memory of 472	1980	wscript.exe	wscript.exe
PID 1980 wrote to memory of 472	1980	wscript.exe	wscript.exe
PID 1980 wrote to memory of 472	1980	wscript.exe	wscript.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\Invoice-7.js
1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\BzcPYMcTBP.js"
2⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:472

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\BzcPYMcTBP.js
MD5
859e2baede14ce52a245894fb546b02b

SHA1
05a23854492ef59f0c704c9c8c677ab1eda554e5

SHA256
57bd7852e743f0de266aeaee04a94b1bd4fdd16f49355c1959f7a4ccaa7f5606

SHA512
29b426ec5279616cfb2777881989e7435a59bb26aca8406a856996e92ca8790a1dd66562a01720dab91b61c17d9dc9b156f07c82a8feb84f6fccda8bb1450a5e

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memory/472-59-0x0000000000000000-mapping.dmp

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