Analysis
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max time kernel
158s -
max time network
128s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 01:55
Static task
static1
Behavioral task
behavioral1
Sample
662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe
Resource
win10-en-20211208
General
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Target
662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe
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Size
115KB
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MD5
f14128a3c45fdb8fc7beaf570d833560
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SHA1
3da6ff8bffd61e763292ac3d83ac73c7d59029b8
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SHA256
662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00
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SHA512
f7f1b7ca40ca63eeda579530151e4f961c6dbeae68633c4c113f42b898c3c777763cb1645c47298fea15ac787317424ede0fc57da8af9b98d0f5654155262cd2
Malware Config
Extracted
C:\gd2238-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/EC0C7DA7778A0743
http://decryptor.cc/EC0C7DA7778A0743
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 17 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\NewMove.png => \??\c:\users\admin\pictures\NewMove.png.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\LimitGroup.crw => \??\c:\users\admin\pictures\LimitGroup.crw.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\WaitConnect.raw => \??\c:\users\admin\pictures\WaitConnect.raw.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\users\admin\pictures\RestoreConfirm.tiff 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\MoveUse.tiff => \??\c:\users\admin\pictures\MoveUse.tiff.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\FormatDebug.raw => \??\c:\users\admin\pictures\FormatDebug.raw.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\MeasureProtect.raw => \??\c:\users\admin\pictures\MeasureProtect.raw.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\MergeBlock.tiff => \??\c:\users\admin\pictures\MergeBlock.tiff.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\users\admin\pictures\ExpandRegister.tiff 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\users\admin\pictures\MergeBlock.tiff 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\PingUse.png => \??\c:\users\admin\pictures\PingUse.png.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\RepairUnlock.tif => \??\c:\users\admin\pictures\RepairUnlock.tif.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\RestoreConfirm.tiff => \??\c:\users\admin\pictures\RestoreConfirm.tiff.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\RemovePublish.crw => \??\c:\users\admin\pictures\RemovePublish.crw.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\users\admin\pictures\MoveUse.tiff 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\CompletePublish.png => \??\c:\users\admin\pictures\CompletePublish.png.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File renamed C:\Users\Admin\Pictures\ExpandRegister.tiff => \??\c:\users\admin\pictures\ExpandRegister.tiff.gd2238 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\F: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\M: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\N: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\S: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\U: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\W: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\A: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\G: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\K: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\L: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\T: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\X: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\Y: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\Z: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\B: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\P: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\Q: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\R: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\V: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\E: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\H: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\I: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\J: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened (read-only) \??\O: 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe -
Drops file in Program Files directory 13 IoCs
description ioc Process File opened for modification \??\c:\program files\FindConvertFrom.clr 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\GroupConvertTo.jpeg 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\UpdateUse.eps 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File created \??\c:\program files\gd2238-readme.txt 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File created \??\c:\program files (x86)\gd2238-readme.txt 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\CompareWatch.ini 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\FormatUnprotect.contact 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\InstallFormat.mpg 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\RenameSend.mpeg 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\SwitchStep.txt 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\UnpublishFind.asx 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\CheckpointSend.xltm 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe File opened for modification \??\c:\program files\CloseUpdate.ps1xml 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe -
Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 372 powershell.exe 372 powershell.exe 372 powershell.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe Token: SeDebugPrivilege 372 powershell.exe Token: SeBackupPrivilege 400 vssvc.exe Token: SeRestorePrivilege 400 vssvc.exe Token: SeAuditPrivilege 400 vssvc.exe Token: SeTakeOwnershipPrivilege 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe -
Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 3140 wrote to memory of 372 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 72 PID 3140 wrote to memory of 372 3140 662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe 72
Processes
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C:\Users\Admin\AppData\Local\Temp\662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe"C:\Users\Admin\AppData\Local\Temp\662dd60f22113b917cfec6a6ff1a3817122919fa6f0d390b6d570f896c6add00.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3140 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:372
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:2376
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:400