Analysis
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max time kernel
152s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-en-20220112 -
submitted
05/03/2022, 16:44
Static task
static1
Behavioral task
behavioral1
Sample
105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe
Resource
win7-20220223-en
Behavioral task
behavioral2
Sample
105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe
Resource
win10v2004-en-20220112
General
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Target
105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe
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Size
117KB
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MD5
bcb8226cbf5e6272d241776cc902f6f9
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SHA1
50ec47ab1fe53ac34ab07fc41c960c237c264198
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SHA256
105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99
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SHA512
18d90a320fb2365df57de93922eb8ba4b46623cd3dce60fb8df5ab2dbebf24b0f01e1302e2f4c511c12bd6836debd9e2debfdc570f4f95186bf3fec0c35688f8
Malware Config
Extracted
C:\b48lfv2-readme.txt
ryuk
https://www.coveware.com/blog/2019/7/15/ransomware-amounts-rise-3x-in-q2-as-ryuk-amp-sodinokibi-spread
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/0524F6DAAA60AB39
http://decryptor.cc/0524F6DAAA60AB39
https://filehippo.com/download_tor_browser_for_windows/
Signatures
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Ryuk
Ransomware distributed via existing botnets, often Trickbot or Emotet.
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Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\InitializeOut.tif => \??\c:\users\admin\pictures\InitializeOut.tif.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File renamed C:\Users\Admin\Pictures\RequestSuspend.crw => \??\c:\users\admin\pictures\RequestSuspend.crw.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File renamed C:\Users\Admin\Pictures\ResetStart.crw => \??\c:\users\admin\pictures\ResetStart.crw.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\users\admin\pictures\WatchExport.tiff 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File renamed C:\Users\Admin\Pictures\TraceGet.crw => \??\c:\users\admin\pictures\TraceGet.crw.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File renamed C:\Users\Admin\Pictures\WatchExport.tiff => \??\c:\users\admin\pictures\WatchExport.tiff.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File renamed C:\Users\Admin\Pictures\CompressBackup.crw => \??\c:\users\admin\pictures\CompressBackup.crw.b48lfv2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\K: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\M: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\P: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\S: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\T: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\A: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\E: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\F: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\U: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\Y: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\I: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\L: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\N: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\Q: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\V: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\B: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\G: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\H: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\W: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\X: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\D: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\J: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\O: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\Z: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened (read-only) \??\R: 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-790714498-1549421491-1643397139-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4dw.bmp" 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe -
Drops file in Program Files directory 29 IoCs
description ioc Process File opened for modification \??\c:\program files\ConfirmSkip.ogg 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ConnectJoin.vsw 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ImportUnprotect.vsx 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\UndoMove.au 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\UndoRemove.mpeg2 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File created \??\c:\program files\b48lfv2-readme.txt 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\CheckpointRequest.MTS 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\GetGrant.jfif 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\SaveConnect.aiff 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\WaitMerge.vsd 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ClearRegister.vsw 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\CopyImport.rtf 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ClearWrite.svg 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\EnableInstall.bmp 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\JoinEnter.htm 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\SelectEnable.gif 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\CopyNew.mp3 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\InitializeSplit.TS 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\PingUnblock.dwg 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\SendGet.jpg 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ClearConvert.emf 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\ConvertFromRegister.emf 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\EnterHide.wma 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File created \??\c:\program files (x86)\b48lfv2-readme.txt 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\AddCompare.WTV 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\SetSelect.midi 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\UnregisterBackup.zip 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\LockSwitch.jtx 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe File opened for modification \??\c:\program files\UnlockUndo.mpeg 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
description pid Process Token: SeDebugPrivilege 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe Token: SeTakeOwnershipPrivilege 1244 105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe Token: SeBackupPrivilege 400 vssvc.exe Token: SeRestorePrivilege 400 vssvc.exe Token: SeAuditPrivilege 400 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe"C:\Users\Admin\AppData\Local\Temp\105614d68f0ef0ba25d8b46a272a99571b7e41ed9efc2bbf0172cd858d34ce99.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1244
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:968
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:400