vjw0rm | 080069323805f67a898f62517b17786d46cc51e9894cd490ee0ba789271e1d9c

Analysis

max time kernel
150s
max time network
144s
platform
windows7_x64
resource
win7-en-20210920
submitted
29-09-2021 07:13

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General

Target

#T01.js
Size

9KB
MD5

920ad067eeb1b674efbddb5f576a3926
SHA1

3339cfccc26898a8e64130d5f784bae479804726
SHA256

080069323805f67a898f62517b17786d46cc51e9894cd490ee0ba789271e1d9c
SHA512

f5883a6bf47b14086d8a01f9bc3a7bbe5321a795605a8a843a81c714142d5d2362d0c047d6a03950d278a03981bc7a92ab69d04452278c26e6083e309b9f9d0a

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 26 IoCs

Processes:

wscript.exe

flow	pid	process
4	1468	wscript.exe
5	1468	wscript.exe
6	1468	wscript.exe
7	1468	wscript.exe
8	1468	wscript.exe
9	1468	wscript.exe
11	1468	wscript.exe
12	1468	wscript.exe
13	1468	wscript.exe
14	1468	wscript.exe
15	1468	wscript.exe
16	1468	wscript.exe
18	1468	wscript.exe
19	1468	wscript.exe
20	1468	wscript.exe
21	1468	wscript.exe
22	1468	wscript.exe
23	1468	wscript.exe
25	1468	wscript.exe
26	1468	wscript.exe
27	1468	wscript.exe
28	1468	wscript.exe
29	1468	wscript.exe
30	1468	wscript.exe
32	1468	wscript.exe
33	1468	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\#T01.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\#T01.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-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Software\Microsoft\Windows\CurrentVersion\Run\MGIVKRKXXP = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\#T01.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
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1944 schtasks.exe

pid	process
1944	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1468 wrote to memory of 1944	1468	wscript.exe	schtasks.exe
PID 1468 wrote to memory of 1944	1468	wscript.exe	schtasks.exe
PID 1468 wrote to memory of 1944	1468	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\#T01.js
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1468

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Local\Temp\#T01.js
2⤵
- Creates scheduled task(s)
PID:1944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/1944-54-0x0000000000000000-mapping.dmp

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