Overview
overview
10Static
static
10Install de...es.bat
windows11-21h2-x64
1Microsoft....re.dll
windows11-21h2-x64
1Microsoft....ms.dll
windows11-21h2-x64
1Microsoft....pf.dll
windows11-21h2-x64
1Newtonsoft.Json.dll
windows11-21h2-x64
1SKullUI.exe
windows11-21h2-x64
1libcrypto-3-x64.dll
windows11-21h2-x64
1libssl-3-x64.dll
windows11-21h2-x64
1skull.dll
windows11-21h2-x64
1skull.exe
windows11-21h2-x64
10Analysis
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max time kernel
43s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
04-02-2025 08:48
Behavioral task
behavioral1
Sample
Install dependencies.bat
Resource
win11-20241007-en
Behavioral task
behavioral2
Sample
Microsoft.Web.WebView2.Core.dll
Resource
win11-20241007-en
Behavioral task
behavioral3
Sample
Microsoft.Web.WebView2.WinForms.dll
Resource
win11-20241007-en
Behavioral task
behavioral4
Sample
Microsoft.Web.WebView2.Wpf.dll
Resource
win11-20241023-en
Behavioral task
behavioral5
Sample
Newtonsoft.Json.dll
Resource
win11-20241007-en
Behavioral task
behavioral6
Sample
SKullUI.exe
Resource
win11-20241007-en
Behavioral task
behavioral7
Sample
libcrypto-3-x64.dll
Resource
win11-20241007-en
Behavioral task
behavioral8
Sample
libssl-3-x64.dll
Resource
win11-20241007-en
Behavioral task
behavioral9
Sample
skull.dll
Resource
win11-20241007-en
Behavioral task
behavioral10
Sample
skull.exe
Resource
win11-20241007-en
General
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Target
skull.exe
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Size
1.3MB
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MD5
3dce90e3a6daa8810d0dec78fd960e7d
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SHA1
d44f4aa742092f33ec60264e15f09fd127a7bb87
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SHA256
096ef1633a1e4b28ea46406a6324998b5f4dc59f6596c3dfbe7d6ee403186733
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SHA512
bd68ff08882a61bbc4d51ca4ae2e055e20db853c79f6ea0dd5867e673af38785ddc4f992c1891ecf6d658bba89556b23797d708f3d7ca1da1eb4332f9a2ea84c
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SSDEEP
24576:RTSTiRsBE12BIVpT2QhYpAILUo/g9QZqpMC3QVbIoTdWR8SfEuGujqZF13z8H81:RT7RseZDT2tSbvQsIbe8YVjPH81
Malware Config
Signatures
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Detect MafiaWare666 ransomware 1 IoCs
resource yara_rule behavioral10/memory/2332-1-0x0000000000DE0000-0x0000000000F32000-memory.dmp family_mafiaware666 -
MafiaWare666 Ransomware
MafiaWare666 is ransomware written in C# with multiple variants.
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Mafiaware666 family
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Renames multiple (75) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
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Drops desktop.ini file(s) 5 IoCs
description ioc Process 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 File opened for modification C:\Users\Admin\Pictures\Saved Pictures\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.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language skull.exe
Processes
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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:2332
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C:\Windows\System32\fontview.exe"C:\Windows\System32\fontview.exe" C:\Users\Admin\Desktop\JoinSave.ttc1⤵PID:4944
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
613KB
MD55649bccf8d5f1cc812af337a33952837
SHA1207a3306177594b338005d2629ad4f8ab910fa21
SHA25643340bdbe526ea52ef04cc4275c31ffa9208b66ecd286dede1e0e3514cb7cfbb
SHA5124546e18fd132d00689d98f4546b5d3f92668edb444aa48a513e9154db1efbf1fd661d45acbeef9c90dce2ee5cd9d59593e51e31ae168a157803295862ff9c1e4