Analysis Overview
SHA256
9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a
Threat Level: Known bad
The file 9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a was found to be: Known bad.
Malicious Activity Summary
Blackmatter family
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
BlackMatter Ransomware
Modifies extensions of user files
Enumerates connected drives
Sets desktop wallpaper using registry
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Modifies registry class
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Modifies Control Panel
Opens file in notepad (likely ransom note)
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK
Enterprise Matrix V6
Analysis: static1
Detonation Overview
Reported
2021-10-05 10:30
Signatures
Blackmatter family
Analysis: behavioral1
Detonation Overview
Submitted
2021-10-05 10:30
Reported
2021-10-05 10:33
Platform
win7v20210408
Max time kernel
128s
Max time network
49s
Command Line
Signatures
BlackMatter Ransomware
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\1rWCqamCt.bmp" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\1rWCqamCt.bmp" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Enumerates physical storage devices
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_Classes\Local Settings | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 | C:\Windows\splwow64.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" | C:\Windows\splwow64.exe | N/A |
| Set value (int) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_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-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff | C:\Windows\splwow64.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg | C:\Windows\splwow64.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_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-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots | C:\Windows\splwow64.exe | N/A |
| Set value (data) | \REGISTRY\USER\S-1-5-21-2455352368-1077083310-2879168483-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff | C:\Windows\splwow64.exe | N/A |
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\NOTEPAD.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
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
Processes
C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe
"C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
C:\Windows\SysWOW64\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" /p C:\1rWCqamCt.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 | 8.8.8.8:53 | nowautomation.com | udp |
Files
memory/1976-60-0x0000000075B31000-0x0000000075B33000-memory.dmp
memory/1976-62-0x0000000000960000-0x0000000000961000-memory.dmp
memory/1976-61-0x0000000000965000-0x0000000000976000-memory.dmp
memory/1976-63-0x0000000000976000-0x0000000000977000-memory.dmp
memory/1360-64-0x0000000000000000-mapping.dmp
C:\1rWCqamCt.README.txt
| MD5 | 17ac384c6fba598efb3bdd0de6420431 |
| SHA1 | ca1584ea94bff53cc3cc8e7bace03cbd1e40f22b |
| SHA256 | 94eb5e2cafd95db7364247f120c0c9ced03db5409f3add3d081cbf7555f9767c |
| SHA512 | b70b6c0ff9fc1b00eed3a2980b11e7008a249cfc78f286353e09006b4ed3bce22a23409e3aa94656ee4461b9287087abc1b5a599ff8d2f5870fcc175153d744f |
memory/1620-67-0x0000000000000000-mapping.dmp
memory/1620-68-0x000007FEFC2E1000-0x000007FEFC2E3000-memory.dmp
memory/1620-69-0x0000000004140000-0x0000000004141000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2021-10-05 10:30
Reported
2021-10-05 10:33
Platform
win10-en-20210920
Max time kernel
117s
Max time network
151s
Command Line
Signatures
BlackMatter Ransomware
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (mojobiden .com)
suricata: ET MALWARE BlackMatter CnC Domain in DNS Lookup (nowautomation .com)
Modifies extensions of user files
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\Z: | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
Sets desktop wallpaper using registry
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\AVx2lZV2X.bmp" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\AVx2lZV2X.bmp" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
Suspicious use of NtSetInformationThreadHideFromDebugger
Modifies Control Panel
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\International | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\WallpaperStyle = "10" | C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Processes
C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe
"C:\Users\Admin\AppData\Local\Temp\9cf9441554ac727f9d191ad9de1dc101867ffe5264699cafcf2734a4b89d5d6a.exe"
C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | mojobiden.com | udp |
| US | 8.8.8.8:53 | nowautomation.com | udp |
Files
memory/2056-115-0x0000000000F13000-0x0000000000F15000-memory.dmp
memory/2056-116-0x0000000000F10000-0x0000000000F11000-memory.dmp