Analysis Overview
SHA256
e4fd947a781611c85ea2e5afa51b186de7f351026c28eb067ad70028acd72cda
Threat Level: Known bad
The file 3317daace715dc332622d883091cf68b was found to be: Known bad.
Malicious Activity Summary
BlackMatter Ransomware
Blackmatter family
Renames multiple (182) files with added filename extension
Renames multiple (152) files with added filename extension
Enumerates connected drives
Suspicious use of NtSetInformationThreadHideFromDebugger
Sets desktop wallpaper using registry
Unsigned PE
Enumerates physical storage devices
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Modifies registry class
Modifies Control Panel
Uses Volume Shadow Copy service COM API
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2023-12-31 10:48
Signatures
Blackmatter family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2023-12-31 10:48
Reported
2024-01-04 06:56
Platform
win7-20231215-en
Max time kernel
122s
Max time network
127s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (182) files with added filename extension
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\F: | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\BzOXaWmXM.bmp" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\BzOXaWmXM.bmp" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_Classes\Local Settings | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" | C:\Windows\splwow64.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3427588347-1492276948-3422228430-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 | C:\Windows\splwow64.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Suspicious behavior: GetForegroundWindowSpam
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\splwow64.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\splwow64.exe | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2964 wrote to memory of 2848 | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 2964 wrote to memory of 2848 | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 2964 wrote to memory of 2848 | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 2964 wrote to memory of 2848 | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 2848 wrote to memory of 1528 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2848 wrote to memory of 1528 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2848 wrote to memory of 1528 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2848 wrote to memory of 1528 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe
"C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\SysWOW64\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" /p F:\BzOXaWmXM.README.txt
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
Network
Files
memory/2964-0-0x0000000000BA0000-0x0000000000BE0000-memory.dmp
C:\Users\BzOXaWmXM.README.txt
| MD5 | c4947c60a66a5f286be734256b7e6e8d |
| SHA1 | 7cd483bbe59972ff22b2c122c08548933e812b66 |
| SHA256 | 5119a7a0a3c668d897f1e33f1b39f3c78396a057b3efa58858c4b86878cce373 |
| SHA512 | ec43f7e65055d471c5f78d9777c0de661690a51da2f905467177c8a433468a74f546d2cac32f3881b75cdbfeabbff4e3ceaef10e181cdb2b5ae70f06875b2565 |
memory/1528-226-0x0000000004160000-0x0000000004161000-memory.dmp
memory/1528-227-0x00000000041E0000-0x00000000041F0000-memory.dmp
memory/1528-228-0x0000000004160000-0x0000000004161000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2023-12-31 10:48
Reported
2024-01-04 06:55
Platform
win10v2004-20231215-en
Max time kernel
129s
Max time network
122s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (152) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\PUOTcnKTQ.bmp" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\PUOTcnKTQ.bmp" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe
"C:\Users\Admin\AppData\Local\Temp\3317daace715dc332622d883091cf68b.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 19.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.200:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 9.228.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 55.36.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.241.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 119.110.54.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 176.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 211.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.180:80 | tcp | |
| N/A | 96.17.178.180:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 96.17.178.174:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| GB | 88.221.134.32:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 8.8.8.8:53 | udp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 52.111.229.19:443 | tcp | |
| US | 8.8.8.8:53 | udp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| GB | 88.221.134.32:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| GB | 96.16.110.114:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| US | 138.91.171.81:80 | tcp | |
| US | 93.184.221.240:80 | tcp | |
| GB | 96.16.110.114:80 | tcp | |
| US | 8.8.8.8:53 | udp | |
| N/A | 52.142.223.178:80 | tcp |
Files
memory/2088-1-0x0000000000FA0000-0x0000000000FB0000-memory.dmp
memory/2088-0-0x0000000000FA0000-0x0000000000FB0000-memory.dmp
C:\Users\PUOTcnKTQ.README.txt
| MD5 | c4947c60a66a5f286be734256b7e6e8d |
| SHA1 | 7cd483bbe59972ff22b2c122c08548933e812b66 |
| SHA256 | 5119a7a0a3c668d897f1e33f1b39f3c78396a057b3efa58858c4b86878cce373 |
| SHA512 | ec43f7e65055d471c5f78d9777c0de661690a51da2f905467177c8a433468a74f546d2cac32f3881b75cdbfeabbff4e3ceaef10e181cdb2b5ae70f06875b2565 |