mafiaware666 | a9573f790d011f3bc8765eb14d0edf0ab1951eb651ae27546b60030feaee4071

Analysis

max time kernel
69s
max time network
45s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
05-02-2025 06:24

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General

Target

Skull.exe
Size

1.3MB
MD5

041584323e0b3786aff522d996726c09
SHA1

834d3f3a44b89f13fab27816da398f74d887b20a
SHA256

e522283c9dd79e1121fc3f22772cd59996cd13584c798d6517b9a3e37c727076
SHA512

2817c5c579cad45c2337955bb2cb825715ac1cfd82bd5c4998fd93bd8f0011f4c750285335cf9e914a370011943f87d1c2795eea2d84b6ff1da0146072743c50
SSDEEP

24576:NTSTiRsBE12BIVpT2QhYpAILUo/g9QZqpMC3QVbIoTdWR8SfEuGujqZF13z8H81:NT7RseZDT2tSbvQsIbe8YVjPH81

Score

10^/10

mafiaware666 discovery ransomware

Malware Config

Signatures

Detect MafiaWare666 ransomware 1 IoCs

resource	yara_rule
behavioral1/memory/3448-1-0x0000000000DC0000-0x0000000000F12000-memory.dmp	family_mafiaware666

MafiaWare666 Ransomware
MafiaWare666 is ransomware written in C# with multiple variants.
ransomware mafiaware666
Mafiaware666 family
mafiaware666
Renames multiple (108) 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\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
File opened for modification	C:\Users\Admin\Documents\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 Internet Explorer settings 1 TTPs 32 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU\SoftwareFallback = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU\VendorId = "4318"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU\DeviceId = "140"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "13"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy\HomepagesUpgradeVersion = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "9"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU\SubSysId = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Protected - It is a violation of Windows Policy to modify. See aka.ms/browserpolicy	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListDomainAttributeSet = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\VersionManager	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateHighDateTime = "31160281"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\VersionManager\FirstCheckForUpdateLowDateTime = "1082360374"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\StaleCompatCache = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\OperationalData = "8"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionLow = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\IECompatVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\Main\DisableFirstRunCustomize = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\TabbedBrowsing\NTPMigrationVer = "1"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionLow = "395196024"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\CVListXMLVersionHigh = "268435456"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Internet Explorer\GPU\Revision = "0"	iexplore.exe

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:3448

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -nohome
1⤵
- Modifies Internet Explorer settings
PID:2668

C:\Program Files\Internet Explorer\iexplore.exe
"C:\Program Files\Internet Explorer\iexplore.exe" -nohome
1⤵
- Modifies Internet Explorer settings
PID:1860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3448-0-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3448-1-0x0000000000DC0000-0x0000000000F12000-memory.dmp

Filesize
1.3MB

Download
memory/3448-2-0x0000000005EC0000-0x0000000006466000-memory.dmp

Filesize
5.6MB

Download
memory/3448-3-0x0000000005910000-0x00000000059A2000-memory.dmp

Filesize
584KB

Download
memory/3448-4-0x0000000005880000-0x000000000588A000-memory.dmp

Filesize
40KB

Download
memory/3448-5-0x0000000074D80000-0x0000000075531000-memory.dmp

Filesize
7.7MB

Download
memory/3448-6-0x0000000074D80000-0x0000000075531000-memory.dmp

Filesize
7.7MB

Download
memory/3448-28-0x0000000074D8E000-0x0000000074D8F000-memory.dmp

Filesize
4KB

Download
memory/3448-32-0x0000000074D80000-0x0000000075531000-memory.dmp

Filesize
7.7MB

Download
memory/3448-35-0x0000000074D80000-0x0000000075531000-memory.dmp

Filesize
7.7MB

Download
memory/3448-120-0x0000000074D80000-0x0000000075531000-memory.dmp

Filesize
7.7MB

Download