vjw0rm | c3708ca56dc71073eed421b174b58df12381eea2db4ae7b5966b02a7ea3a175b

Analysis

max time kernel
147s
max time network
149s
platform
windows7_x64
resource
win7-20221111-en
resource tags

arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
submitted
07-02-2023 00:11

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General

Target

E-receipt #202110206-NNG.js
Size

790KB
MD5

5347f986bc63f447116cc3ff9c991c38
SHA1

88936a5c4be3c38e1a6793b7be22c62924fe9421
SHA256

c3708ca56dc71073eed421b174b58df12381eea2db4ae7b5966b02a7ea3a175b
SHA512

88aa6ae306d33c43a1df01e93c295aa170d8192bf335b667af50fc3c925f99e3f811a41ce36f9845271beed730b6845d904bdb9a25fd020fc6e0906eea22295f
SSDEEP

384:zjYMb67+0Ljek5tpTzADckX4gcch7688KCtDEj/ZjlNO3pOmDZp:pY+KestpTocfchV8VEjBjlNO5OkZp

Score

10^/10

vjw0rm persistence trojan worm

Malware Config

Extracted

Family

vjw0rm

http://wenotgivingup.duckdns.org:7992

Signatures

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

3 1320 wscript.exe
Drops startup file 1 IoCs

Processes:

wscript.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\E-receipt #202110206-NNG.js wscript.exe

flow	pid	process
3	1320	wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\E-receipt #202110206-NNG.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-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3385717845-2518323428-350143044-1000\Software\Microsoft\Windows\CurrentVersion\Run\LA338EKPUO = "\"C:\\Users\\Admin\\AppData\\Roaming\\E-receipt #202110206-NNG.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

1716 schtasks.exe

pid	process
1716	schtasks.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

wscript.exe

description	pid	process	target process
PID 1320 wrote to memory of 1716	1320	wscript.exe	schtasks.exe
PID 1320 wrote to memory of 1716	1320	wscript.exe	schtasks.exe
PID 1320 wrote to memory of 1716	1320	wscript.exe	schtasks.exe

C:\Windows\system32\wscript.exe
wscript.exe "C:\Users\Admin\AppData\Local\Temp\E-receipt #202110206-NNG.js"
1⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /sc minute /mo 30 /tn Skype /tr "C:\Users\Admin\AppData\Roaming\E-receipt #202110206-NNG.js
2⤵
- Creates scheduled task(s)
PID:1716

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/1320-54-0x000007FEFC101000-0x000007FEFC103000-memory.dmp

Filesize
8KB

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memory/1716-55-0x0000000000000000-mapping.dmp

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