Analysis Overview
SHA256
520bd9ed608c668810971dbd51184c6a29819674280b018dc4027bc38fc42e57
Threat Level: Known bad
The file 50c4970003a84cab1bf2634631fe39d7 was found to be: Known bad.
Malicious Activity Summary
Blackmatter family
BlackMatter Ransomware
Renames multiple (151) files with added filename extension
Renames multiple (167) files with added filename extension
Enumerates connected drives
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Unsigned PE
Uses Volume Shadow Copy service COM API
Suspicious use of SetWindowsHookEx
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Modifies Control Panel
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-01-10 14:10
Signatures
Blackmatter family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-01-10 14:10
Reported
2024-01-10 14:15
Platform
win7-20231215-en
Max time kernel
191s
Max time network
210s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (167) files with added filename extension
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\F: | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\fhe6gYG6F.bmp" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\fhe6gYG6F.bmp" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_Classes\Local Settings | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_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 (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 | C:\Windows\splwow64.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 | C:\Windows\splwow64.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.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 3000 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 3000 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 3000 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 3000 wrote to memory of 2704 | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | C:\Windows\SysWOW64\NOTEPAD.EXE |
| PID 2704 wrote to memory of 2940 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2704 wrote to memory of 2940 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2704 wrote to memory of 2940 | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | C:\Windows\splwow64.exe |
| PID 2704 wrote to memory of 2940 | 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\50c4970003a84cab1bf2634631fe39d7.exe
"C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\SysWOW64\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" /p F:\fhe6gYG6F.README.txt
C:\Windows\splwow64.exe
C:\Windows\splwow64.exe 12288
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mojobiden.com | udp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
| US | 3.33.130.190:80 | mojobiden.com | tcp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
Files
memory/3000-0-0x0000000001CC0000-0x0000000001D00000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\Cab6431.tmp
| MD5 | ac05d27423a85adc1622c714f2cb6184 |
| SHA1 | b0fe2b1abddb97837ea0195be70ab2ff14d43198 |
| SHA256 | c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d |
| SHA512 | 6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d |
C:\Users\Admin\AppData\Local\Temp\Tar6463.tmp
| MD5 | 9c0c641c06238516f27941aa1166d427 |
| SHA1 | 64cd549fb8cf014fcd9312aa7a5b023847b6c977 |
| SHA256 | 4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f |
| SHA512 | 936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06 |
F:\fhe6gYG6F.README.txt
| MD5 | 8d8f960af0181c4ecbb0ae3d7572199c |
| SHA1 | 32169e6bec91a3275c4608120d1ba34bdbd6a004 |
| SHA256 | 29181bf7ae071329e459ad38efc9986f2ff83a8d83a212f06514806d86129296 |
| SHA512 | 941d22ed2163e238d3db2d72e1f0f4e59cb4924e69bc178672c7e07b84dfadfe0198ef3c7a84c47e78a1c753fbc3472798fc8466ef865aa493b75fa27f5a2de2 |
memory/2940-446-0x00000000040E0000-0x00000000040E1000-memory.dmp
C:\Users\Admin\Documents\ReadGrant.xps.fhe6gYG6F
| MD5 | 18b17b8add7aa897e0c181b622161e91 |
| SHA1 | 234744a08807b8d4c4a9599727eb39e16be83de7 |
| SHA256 | e544a8d79ba10ddd2007d3f34d8d04a3c2ac3b24eee586fb8c7d3cbccac50daa |
| SHA512 | ff4574e13f875eaebb3783820548577f7ee95d5cb81fa7d9efea7b696ed3b57b2859830cc991d71ce45230a63b865c5bad918c59944abd5735dd943e02a9ec53 |
memory/2940-448-0x00000000040E0000-0x00000000040E1000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-01-10 14:10
Reported
2024-01-10 14:13
Platform
win10v2004-20231215-en
Max time kernel
153s
Max time network
170s
Command Line
Signatures
BlackMatter Ransomware
Renames multiple (151) files with added filename extension
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\I92w9iew3.bmp" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\I92w9iew3.bmp" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe | N/A |
Suspicious use of AdjustPrivilegeToken
Uses Volume Shadow Copy service COM API
Processes
C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe
"C:\Users\Admin\AppData\Local\Temp\50c4970003a84cab1bf2634631fe39d7.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 146.78.124.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 84.177.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | mojobiden.com | udp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
| US | 8.8.8.8:53 | 180.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.154.82.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 190.130.33.3.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 41.249.124.192.in-addr.arpa | udp |
| US | 138.91.171.81:80 | tcp | |
| US | 8.8.8.8:53 | 41.110.16.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 59.128.231.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | crl.godaddy.com | udp |
| US | 8.8.8.8:53 | 18.31.95.13.in-addr.arpa | udp |
| US | 192.124.249.31:80 | crl.godaddy.com | tcp |
| US | 8.8.8.8:53 | 158.240.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 31.249.124.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.135.221.88.in-addr.arpa | udp |
| US | 3.33.130.190:80 | mojobiden.com | tcp |
| US | 3.33.130.190:443 | mojobiden.com | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 55.36.223.20.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 | 200.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 232.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.135.221.88.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 208.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 181.178.17.96.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 90.16.208.104.in-addr.arpa | udp |
Files
memory/1752-0-0x0000000002410000-0x0000000002420000-memory.dmp
memory/1752-1-0x0000000002410000-0x0000000002420000-memory.dmp
F:\I92w9iew3.README.txt
| MD5 | 8d8f960af0181c4ecbb0ae3d7572199c |
| SHA1 | 32169e6bec91a3275c4608120d1ba34bdbd6a004 |
| SHA256 | 29181bf7ae071329e459ad38efc9986f2ff83a8d83a212f06514806d86129296 |
| SHA512 | 941d22ed2163e238d3db2d72e1f0f4e59cb4924e69bc178672c7e07b84dfadfe0198ef3c7a84c47e78a1c753fbc3472798fc8466ef865aa493b75fa27f5a2de2 |
memory/1752-247-0x0000000002410000-0x0000000002420000-memory.dmp
memory/1752-248-0x0000000002410000-0x0000000002420000-memory.dmp