mafiaware666 | 4bcbb8983fe7425976c5a1789deff73fb138e80981f5ebfef1f835bcc6757760

Resubmissions

14/04/2025, 07:51

250414-jp1kfssjz9 10

14/04/2025, 07:46

250414-jl9nyssjt9 10

08/04/2025, 15:58

250408-tevasswl18 10

08/04/2025, 14:19

250408-rm2nqsvqw2 10

Analysis

max time kernel
142s
max time network
112s
platform
windows11-21h2_x64
resource
win11-20250410-en
resource tags

arch:x64arch:x86image:win11-20250410-enlocale:en-usos:windows11-21h2-x64system
submitted
14/04/2025, 07:46

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General

Target

f89219b77e5fde5a7a1581e3e4cc0b00.exe
Size

294KB
MD5

f89219b77e5fde5a7a1581e3e4cc0b00
SHA1

557c9ff996b42056c0531e63ebf5e7d794b23b19
SHA256

6c8d0a52686544703953357f4d7655e5e1a27a90e2f1aeac9eccdddb618333e5
SHA512

9ba62300e547e971ff79e4ec0209e07197414071ddf0b90d4a951e06a82f258ab2abcd9653b5fdeb5febe9b6fc8b6a28ce52f7360d94b63283fd0485168b6a40
SSDEEP

3072:bC6UBkwelNBVB18I8qk49NWa+miRztQYi+GVnkgLmVv3yniVH9T2mZP:bdHvH8+k49wa+LRBQYi+OkgKLVH9T2m

Score

10^/10

mafiaware666 discovery ransomware

Malware Config

Signatures

Detect MafiaWare666 ransomware 1 IoCs

resource	yara_rule
behavioral20/memory/3028-1-0x0000000000850000-0x000000000089E000-memory.dmp	family_mafiaware666

MafiaWare666 Ransomware
MafiaWare666 is ransomware written in C# with multiple variants.
ransomware mafiaware666
Mafiaware666 family
mafiaware666
Renames multiple (110) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Drops desktop.ini file(s) 7 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	F:\$RECYCLE.BIN\S-1-5-21-599783296-1627459723-2423478968-1000\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	C:\Users\Admin\Pictures\Camera Roll\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	C:\Users\Admin\Pictures\Saved Pictures\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	f89219b77e5fde5a7a1581e3e4cc0b00.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	f89219b77e5fde5a7a1581e3e4cc0b00.exe

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-599783296-1627459723-2423478968-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Cookies\CachePrefix = "Cookie:"	BackgroundTransferHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-599783296-1627459723-2423478968-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\History\CachePrefix = "Visited:"	BackgroundTransferHost.exe
Key created	\REGISTRY\USER\S-1-5-21-599783296-1627459723-2423478968-1000_Classes\Local Settings\MuiCache	BackgroundTransferHost.exe
Key created	\REGISTRY\USER\S-1-5-21-599783296-1627459723-2423478968-1000_Classes\Local Settings\MuiCache	MiniSearchHost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-599783296-1627459723-2423478968-1000_Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppContainer\Storage\microsoftwindows.client.cbs_cw5n1h2txyewy\Internet Settings\Cache\Content\CachePrefix	BackgroundTransferHost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2432	MiniSearchHost.exe

C:\Users\Admin\AppData\Local\Temp\f89219b77e5fde5a7a1581e3e4cc0b00.exe
"C:\Users\Admin\AppData\Local\Temp\f89219b77e5fde5a7a1581e3e4cc0b00.exe"
1⤵
- Drops desktop.ini file(s)
- System Location Discovery: System Language Discovery
PID:3028

C:\Windows\system32\BackgroundTransferHost.exe
"BackgroundTransferHost.exe" -ServerName:BackgroundTransferHost.13
1⤵
- Modifies registry class
PID:3684

C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe
"C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\MiniSearchHost.exe" -ServerName:MiniSearchUI.AppXj3y73at8fy1htwztzxs68sxx1v7cksp7.mca
1⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:2432

Network

MITRE ATT&CK Enterprise v16

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

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Downloads

C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\AC\BackgroundTransferApi\49bf93a0-2174-4ea6-9448-5b3dcaa8465c.down_data

Filesize
555KB

MD5
5683c0028832cae4ef93ca39c8ac5029

SHA1
248755e4e1db552e0b6f8651b04ca6d1b31a86fb

SHA256
855abd360d8a8d6974eba92b70cbd09ce519bc8773439993f9ab37cb6847309e

SHA512
aba434bd29be191c823b02ea9b639beb10647bbe7759bbffdaa790dfb1ec2c58d74c525ef11aacda209e4effe322d1d3a07b115446c8914b07a3bce4d8a0e2c3

Download Submit
C:\Users\Admin\AppData\Local\Packages\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\TempState\SearchHoverUnifiedTileModelCache.dat

Filesize
23KB

MD5
8eac0df6d05d014fbbc51e0139015737

SHA1
0260efbfe34f79a361e935cb0fa5a0e58ae23d0a

SHA256
18963958c728bec48aa034995bd4a54bacd61a548c7475e51002604741bbf5e3

SHA512
1781707f9fccb71db5f19552f877629337fcdd4b8f946398beb2f2b641ab2df3e53d0cd5f5588be55adb0fc821d274462ba75fac408c3f71dd77cf0656c8f787

Download Submit
memory/3028-0-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/3028-1-0x0000000000850000-0x000000000089E000-memory.dmp

Filesize
312KB

Download
memory/3028-2-0x00000000059E0000-0x0000000005F86000-memory.dmp

Filesize
5.6MB

Download
memory/3028-3-0x0000000005360000-0x00000000053F2000-memory.dmp

Filesize
584KB

Download
memory/3028-4-0x0000000005340000-0x000000000534A000-memory.dmp

Filesize
40KB

Download
memory/3028-5-0x0000000074A80000-0x0000000075231000-memory.dmp

Filesize
7.7MB

Download
memory/3028-6-0x0000000074A80000-0x0000000075231000-memory.dmp

Filesize
7.7MB

Download
memory/3028-27-0x0000000074A8E000-0x0000000074A8F000-memory.dmp

Filesize
4KB

Download
memory/3028-30-0x0000000074A80000-0x0000000075231000-memory.dmp

Filesize
7.7MB

Download
memory/3028-34-0x0000000074A80000-0x0000000075231000-memory.dmp

Filesize
7.7MB

Download