mafiaware666 | 096ef1633a1e4b28ea46406a6324998b5f4dc59f6596c3dfbe7d6ee403186733

Analysis

max time kernel
105s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-02-2025 11:50

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

skull.exe
Size

1.3MB
MD5

3dce90e3a6daa8810d0dec78fd960e7d
SHA1

d44f4aa742092f33ec60264e15f09fd127a7bb87
SHA256

096ef1633a1e4b28ea46406a6324998b5f4dc59f6596c3dfbe7d6ee403186733
SHA512

bd68ff08882a61bbc4d51ca4ae2e055e20db853c79f6ea0dd5867e673af38785ddc4f992c1891ecf6d658bba89556b23797d708f3d7ca1da1eb4332f9a2ea84c
SSDEEP

24576:RTSTiRsBE12BIVpT2QhYpAILUo/g9QZqpMC3QVbIoTdWR8SfEuGujqZF13z8H81:RT7RseZDT2tSbvQsIbe8YVjPH81

Score

10^/10

mafiaware666 discovery ransomware

Malware Config

Signatures

Detect MafiaWare666 ransomware 1 IoCs

resource	yara_rule
behavioral1/memory/2452-1-0x00000000007D0000-0x0000000000922000-memory.dmp	family_mafiaware666

MafiaWare666 Ransomware
MafiaWare666 is ransomware written in C# with multiple variants.
ransomware mafiaware666
Mafiaware666 family
mafiaware666
Renames multiple (69) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops desktop.ini file(s) 5 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	skull.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	skull.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	skull.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	skull.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	skull.exe

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	skull.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000_Classes\Local Settings	OpenWith.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
112	NOTEPAD.EXE
2292	NOTEPAD.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
112	NOTEPAD.EXE

Suspicious use of SetWindowsHookEx 15 IoCs

pid	Process
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe
4100	OpenWith.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4100 wrote to memory of 112	4100	OpenWith.exe	95
PID 4100 wrote to memory of 112	4100	OpenWith.exe	95

C:\Users\Admin\AppData\Local\Temp\skull.exe
"C:\Users\Admin\AppData\Local\Temp\skull.exe"
1⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
PID:2452

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4100
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\GroupHide.csv.jcrypt
  2⤵
  - Opens file in notepad (likely ransom note)
  - Suspicious use of FindShellTrayWindow
  PID:112

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\___RECOVER__FILES__.jcrypt.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\Desktop\GroupHide.csv.jcrypt

Filesize
487KB

MD5
d018de2dd344bc6be8b5aeba1344d5c1

SHA1
7924b7ea2365cfc133e0699747a581e6b7147f02

SHA256
56052dbf752ec649d55e1449bcb6d0d1e64c6ee6f36f250c58ae37cee1f32865

SHA512
c9d2c8687f2458f3941615f56b0557d5043ef6cb25fbd8dbb1aca927aaa765dad568938ee5c53de3374c61830346702c1732dc9334c8552d52cd3d9cdf8fc597

Download Submit
C:\Users\Admin\Desktop\___RECOVER__FILES__.jcrypt.txt

Filesize
3KB

MD5
8efdf2c9bda6f498b6ad872ab45c4364

SHA1
08738ac6765b78ba111bd957d66a6d761de45db4

SHA256
285be6e25d46cb90d3027d222198b7abec9584550617ba11fbbfa6dc887439df

SHA512
84bcd93816df15bdeb4e479120895f11aa6f7e08a44802347004c1a4e288bcb85060a6c449fa70e62e53869561b5447ea43a4ffc58ff5fa7c245ac2698f577bd

Download Submit
memory/2452-6-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-3-0x0000000005370000-0x0000000005402000-memory.dmp

Filesize
584KB

Download
memory/2452-4-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-5-0x0000000005330000-0x000000000533A000-memory.dmp

Filesize
40KB

Download
memory/2452-0-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/2452-26-0x000000007506E000-0x000000007506F000-memory.dmp

Filesize
4KB

Download
memory/2452-29-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-33-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-81-0x0000000075060000-0x0000000075810000-memory.dmp

Filesize
7.7MB

Download
memory/2452-2-0x0000000005920000-0x0000000005EC4000-memory.dmp

Filesize
5.6MB

Download
memory/2452-1-0x00000000007D0000-0x0000000000922000-memory.dmp

Filesize
1.3MB

Download