Analysis
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max time kernel
70s -
max time network
92s -
platform
windows7_x64 -
resource
win7-en-20210920 -
submitted
22-10-2021 06:42
Static task
static1
Behavioral task
behavioral1
Sample
01.exe
Resource
win7-en-20210920
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
01.exe
Resource
win10-en-20211014
windows10_x64
0 signatures
0 seconds
General
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Target
01.exe
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Size
78KB
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MD5
5e2a1323dbf28eac8b3f4df9cb4f2d45
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SHA1
af77a09387df4ec967a8314ba0f93da0ef8e57ee
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SHA256
b4b9fdf30c017af1a8a3375218e43073117690a71c3f00ac5f6361993471e5e7
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SHA512
c2ba4f7458298129a8d2f1ac50640601d59086048ecc8d3d88985c31edf4014e4f4838308192ab39fb21d71a9b362a38a93edff58b570ec6f5ccfb940d871b94
Score
10/10
Malware Config
Extracted
Path
C:\chkvc3MvG.README.txt
Family
blackmatter
Ransom Note
~+
* +
' BLACK |
() .-.,='``'=. - o -
'=/_ \ |
* | '=._ |
\ `=./`, '
. '=.__.=' `=' *
+ Matter +
O * ' .
>>> What happens?
Your network is encrypted, and currently not operational.
We need only money, after payment we will give you a decryptor for the entire network and you will restore all the data.
>>> What guarantees?
We are not a politically motivated group and we do not need anything other than your money.
If you pay, we will provide you the programs for decryption and we will delete your data.
If we do not give you decrypters or we do not delete your data, no one will pay us in the future, this does not comply with our goals.
We always keep our promises.
>>> How to contact with us?
1. Download and install TOR Browser (https://www.torproject.org/).
2. Open http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/O3KTUJZRE6CB4Q1OBR
>>> Warning! Recovery recommendations.
We strongly recommend you to do not MODIFY or REPAIR your files, that will damage them.
URLs
http://supp24yy6a66hwszu2piygicgwzdtbwftb76htfj7vnip3getgqnzxid.onion/O3KTUJZRE6CB4Q1OBR
Signatures
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BlackMatter Ransomware
BlackMatter ransomware group claims to be Darkside and REvil succesor.
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Modifies extensions of user files 26 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\ReadMount.tif => C:\Users\Admin\Pictures\ReadMount.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\UnregisterMount.crw.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\CompressRestart.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\DenyUnregister.raw.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\DisconnectPop.tif => C:\Users\Admin\Pictures\DisconnectPop.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\DisconnectPop.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\EnableSuspend.png.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\InitializeRepair.tiff => C:\Users\Admin\Pictures\InitializeRepair.tiff.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\AssertInstall.tif => C:\Users\Admin\Pictures\AssertInstall.tif.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\DenyUnregister.raw => C:\Users\Admin\Pictures\DenyUnregister.raw.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\DismountSubmit.tiff => C:\Users\Admin\Pictures\DismountSubmit.tiff.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\DismountSubmit.tiff.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\MeasureSelect.raw.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\EnableSuspend.png => C:\Users\Admin\Pictures\EnableSuspend.png.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\ExpandRegister.png => C:\Users\Admin\Pictures\ExpandRegister.png.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\ExpandRegister.png.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\InitializeRepair.tiff 01.exe File opened for modification C:\Users\Admin\Pictures\InitializeRepair.tiff.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\UnregisterMount.crw => C:\Users\Admin\Pictures\UnregisterMount.crw.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\ReadMount.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\AssertInstall.tif.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\CompressRestart.tif => C:\Users\Admin\Pictures\CompressRestart.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\DismountSubmit.tiff 01.exe File renamed C:\Users\Admin\Pictures\MeasureSelect.raw => C:\Users\Admin\Pictures\MeasureSelect.raw.chkvc3MvG 01.exe File renamed C:\Users\Admin\Pictures\MountRegister.tif => C:\Users\Admin\Pictures\MountRegister.tif.chkvc3MvG 01.exe File opened for modification C:\Users\Admin\Pictures\MountRegister.tif.chkvc3MvG 01.exe -
Sets desktop wallpaper using registry 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\WallPaper = "C:\\ProgramData\\chkvc3MvG.bmp" 01.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\Wallpaper = "C:\\ProgramData\\chkvc3MvG.bmp" 01.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
pid Process 1200 01.exe 1200 01.exe 1200 01.exe 1200 01.exe 1200 01.exe 1200 01.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Modifies Control Panel 3 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\International 01.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop 01.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000\Control Panel\Desktop\WallpaperStyle = "10" 01.exe -
Modifies registry class 31 IoCs
description ioc Process Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Sort = 000000000000000000000000000000000200000030f125b7ef471a10a5f102608c9eebac0a0000000100000030f125b7ef471a10a5f102608c9eebac0e000000ffffffff splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\IconSize = "16" splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags splwow64.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_FolderType = "{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}" splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\Mode = "4" splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC} splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg splwow64.exe Set value (str) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewID = "{82BA0782-5B7A-4569-B5D7-EC83085F08CC}" splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\MRUListEx = 00000000ffffffff splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\NodeSlot = "1" splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1 splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_Classes\Local Settings splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = ffffffff splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\MRUListEx = 00000000ffffffff splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1092616257" splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\1\ComDlg\TV_TopViewVersion = "0" splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0 = 9e0000001a00eebbfe23000010007db10d7bd29c934a973346cc89022e7c00002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020002a0000000000efbe7e47b3fbe4c93b4ba2bad3f5d3cd46f98207ba827a5b6945b5d7ec83085f08cc20002a0000000000efbe000000200000000000000000000000000000000000000000000000000100000020000000 splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\NodeSlots = 02 splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0\0\MRUListEx = ffffffff splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\ColInfo = 00000000000000000000000000000000fddfdffd100000000000000000000000040000001800000030f125b7ef471a10a5f102608c9eebac0a0000001001000030f125b7ef471a10a5f102608c9eebac0e0000007800000030f125b7ef471a10a5f102608c9eebac040000007800000030f125b7ef471a10a5f102608c9eebac0c00000050000000 splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\FFlags = "1" splwow64.exe Set value (data) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\BagMRU\0 = 14001f4225481e03947bc34db131e946b44c8dd50000 splwow64.exe Key created \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9} splwow64.exe Set value (int) \REGISTRY\USER\S-1-5-21-3456797065-1076791440-4146276586-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\Bags\AllFolders\ComDlg\{FBB3477E-C9E4-4B3B-A2BA-D3F5D3CD46F9}\{82BA0782-5B7A-4569-B5D7-EC83085F08CC}\LogicalViewMode = "1" splwow64.exe -
Opens file in notepad (likely ransom note) 1 IoCs
pid Process 1676 NOTEPAD.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1200 01.exe 1200 01.exe 1200 01.exe 1200 01.exe -
Suspicious use of AdjustPrivilegeToken 17 IoCs
description pid Process Token: SeBackupPrivilege 1200 01.exe Token: SeDebugPrivilege 1200 01.exe Token: 36 1200 01.exe Token: SeImpersonatePrivilege 1200 01.exe Token: SeIncBasePriorityPrivilege 1200 01.exe Token: SeIncreaseQuotaPrivilege 1200 01.exe Token: 33 1200 01.exe Token: SeManageVolumePrivilege 1200 01.exe Token: SeProfSingleProcessPrivilege 1200 01.exe Token: SeRestorePrivilege 1200 01.exe Token: SeSecurityPrivilege 1200 01.exe Token: SeSystemProfilePrivilege 1200 01.exe Token: SeTakeOwnershipPrivilege 1200 01.exe Token: SeShutdownPrivilege 1200 01.exe Token: SeBackupPrivilege 768 vssvc.exe Token: SeRestorePrivilege 768 vssvc.exe Token: SeAuditPrivilege 768 vssvc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1660 splwow64.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1200 wrote to memory of 1676 1200 01.exe 34 PID 1200 wrote to memory of 1676 1200 01.exe 34 PID 1200 wrote to memory of 1676 1200 01.exe 34 PID 1200 wrote to memory of 1676 1200 01.exe 34 PID 1676 wrote to memory of 1660 1676 NOTEPAD.EXE 35 PID 1676 wrote to memory of 1660 1676 NOTEPAD.EXE 35 PID 1676 wrote to memory of 1660 1676 NOTEPAD.EXE 35 PID 1676 wrote to memory of 1660 1676 NOTEPAD.EXE 35
Processes
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C:\Users\Admin\AppData\Local\Temp\01.exe"C:\Users\Admin\AppData\Local\Temp\01.exe"1⤵
- Modifies extensions of user files
- Sets desktop wallpaper using registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies Control Panel
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1200 -
C:\Windows\SysWOW64\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" /p C:\chkvc3MvG.README.txt2⤵
- Opens file in notepad (likely ransom note)
- Suspicious use of WriteProcessMemory
PID:1676 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122883⤵
- Modifies registry class
- Suspicious use of SetWindowsHookEx
PID:1660
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:768