Analysis
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max time kernel
147s -
max time network
152s -
platform
windows10_x64 -
resource
win10v20210408 -
submitted
03-05-2021 20:13
Static task
static1
Behavioral task
behavioral1
Sample
sample.dll
Resource
win7v20210410
Behavioral task
behavioral2
Sample
sample.dll
Resource
win10v20210408
General
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Target
sample.dll
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Size
813KB
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MD5
040818b1b3c9b1bf8245f5bcb4eebbbc
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SHA1
c0f569fc22cb5dd8e02e44f85168b4b72a6669c3
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SHA256
0496ca57e387b10dfdac809de8a4e039f68e8d66535d5d19ec76d39f7d0a4402
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SHA512
bf4dcfb3c7cac05776560e751414a8babfa25fb8703768d0264133d4964f841055cfcab9f30d9854e422642855b4452b9fbf431889cb70a37ecbca7564f638c1
Malware Config
Extracted
C:\069d2-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/A8C5CA18C6C64F7F
http://decoder.re/A8C5CA18C6C64F7F
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Blocklisted process makes network request 64 IoCs
Processes:
rundll32.exeflow pid process 29 1324 rundll32.exe 31 1324 rundll32.exe 35 1324 rundll32.exe 37 1324 rundll32.exe 39 1324 rundll32.exe 41 1324 rundll32.exe 43 1324 rundll32.exe 45 1324 rundll32.exe 47 1324 rundll32.exe 49 1324 rundll32.exe 51 1324 rundll32.exe 53 1324 rundll32.exe 55 1324 rundll32.exe 57 1324 rundll32.exe 59 1324 rundll32.exe 61 1324 rundll32.exe 63 1324 rundll32.exe 65 1324 rundll32.exe 67 1324 rundll32.exe 69 1324 rundll32.exe 71 1324 rundll32.exe 73 1324 rundll32.exe 75 1324 rundll32.exe 77 1324 rundll32.exe 79 1324 rundll32.exe 81 1324 rundll32.exe 83 1324 rundll32.exe 85 1324 rundll32.exe 87 1324 rundll32.exe 89 1324 rundll32.exe 90 1324 rundll32.exe 92 1324 rundll32.exe 94 1324 rundll32.exe 96 1324 rundll32.exe 99 1324 rundll32.exe 101 1324 rundll32.exe 103 1324 rundll32.exe 105 1324 rundll32.exe 107 1324 rundll32.exe 109 1324 rundll32.exe 111 1324 rundll32.exe 113 1324 rundll32.exe 115 1324 rundll32.exe 118 1324 rundll32.exe 120 1324 rundll32.exe 122 1324 rundll32.exe 126 1324 rundll32.exe 128 1324 rundll32.exe 130 1324 rundll32.exe 132 1324 rundll32.exe 134 1324 rundll32.exe 136 1324 rundll32.exe 138 1324 rundll32.exe 139 1324 rundll32.exe 140 1324 rundll32.exe 142 1324 rundll32.exe 145 1324 rundll32.exe 147 1324 rundll32.exe 149 1324 rundll32.exe 151 1324 rundll32.exe 153 1324 rundll32.exe 155 1324 rundll32.exe 157 1324 rundll32.exe 160 1324 rundll32.exe -
Modifies extensions of user files 14 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
rundll32.exedescription ioc process File renamed C:\Users\Admin\Pictures\ImportEnter.raw => \??\c:\users\admin\pictures\ImportEnter.raw.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\UpdateStart.png => \??\c:\users\admin\pictures\UpdateStart.png.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\UseExport.png => \??\c:\users\admin\pictures\UseExport.png.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\SearchSelect.tif => \??\c:\users\admin\pictures\SearchSelect.tif.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\SetDisconnect.png => \??\c:\users\admin\pictures\SetDisconnect.png.069d2 rundll32.exe File opened for modification \??\c:\users\admin\pictures\BlockImport.tiff rundll32.exe File renamed C:\Users\Admin\Pictures\BlockImport.tiff => \??\c:\users\admin\pictures\BlockImport.tiff.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\DebugTrace.tif => \??\c:\users\admin\pictures\DebugTrace.tif.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\ResetGroup.png => \??\c:\users\admin\pictures\ResetGroup.png.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\ResetRead.raw => \??\c:\users\admin\pictures\ResetRead.raw.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\GrantMount.tif => \??\c:\users\admin\pictures\GrantMount.tif.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\InstallClear.crw => \??\c:\users\admin\pictures\InstallClear.crw.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\MoveSave.crw => \??\c:\users\admin\pictures\MoveSave.crw.069d2 rundll32.exe File renamed C:\Users\Admin\Pictures\RenameGroup.raw => \??\c:\users\admin\pictures\RenameGroup.raw.069d2 rundll32.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
rundll32.exedescription ioc process File opened (read-only) \??\E: rundll32.exe File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\I: rundll32.exe File opened (read-only) \??\J: rundll32.exe File opened (read-only) \??\N: rundll32.exe File opened (read-only) \??\P: rundll32.exe File opened (read-only) \??\Q: rundll32.exe File opened (read-only) \??\A: rundll32.exe File opened (read-only) \??\T: rundll32.exe File opened (read-only) \??\S: rundll32.exe File opened (read-only) \??\Y: rundll32.exe File opened (read-only) \??\M: rundll32.exe File opened (read-only) \??\L: rundll32.exe File opened (read-only) \??\W: rundll32.exe File opened (read-only) \??\X: rundll32.exe File opened (read-only) \??\G: rundll32.exe File opened (read-only) \??\F: rundll32.exe File opened (read-only) \??\K: rundll32.exe File opened (read-only) \??\O: rundll32.exe File opened (read-only) \??\R: rundll32.exe File opened (read-only) \??\U: rundll32.exe File opened (read-only) \??\V: rundll32.exe File opened (read-only) \??\Z: rundll32.exe File opened (read-only) \??\B: rundll32.exe File opened (read-only) \??\D: rundll32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\024p68zz.bmp" rundll32.exe -
Drops file in Program Files directory 35 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification \??\c:\program files\SelectReceive.xlt rundll32.exe File opened for modification \??\c:\program files\SkipStep.dotx rundll32.exe File opened for modification \??\c:\program files\SplitDisconnect.rtf rundll32.exe File opened for modification \??\c:\program files\TraceResume.DVR-MS rundll32.exe File opened for modification \??\c:\program files\DismountWatch.xlt rundll32.exe File opened for modification \??\c:\program files\ReadStop.eprtx rundll32.exe File opened for modification \??\c:\program files\RestartConvertTo.pptm rundll32.exe File opened for modification \??\c:\program files\SwitchBackup.i64 rundll32.exe File created \??\c:\program files\069d2-readme.txt rundll32.exe File opened for modification \??\c:\program files\PingGroup.htm rundll32.exe File opened for modification \??\c:\program files\RegisterConfirm.M2V rundll32.exe File opened for modification \??\c:\program files\ClearEnter.MTS rundll32.exe File opened for modification \??\c:\program files\CompleteLimit.reg rundll32.exe File opened for modification \??\c:\program files\ConfirmDisconnect.mp2 rundll32.exe File opened for modification \??\c:\program files\CheckpointMount.m4v rundll32.exe File opened for modification \??\c:\program files\WaitUnpublish.txt rundll32.exe File opened for modification \??\c:\program files\WriteDismount.jpeg rundll32.exe File opened for modification \??\c:\program files\DenyNew.inf rundll32.exe File opened for modification \??\c:\program files\LockPublish.fon rundll32.exe File opened for modification \??\c:\program files\CompleteInvoke.mpeg2 rundll32.exe File opened for modification \??\c:\program files\CompressRestart.zip rundll32.exe File opened for modification \??\c:\program files\ConvertEnable.3gp rundll32.exe File opened for modification \??\c:\program files\DebugWatch.m1v rundll32.exe File opened for modification \??\c:\program files\ExpandSend.otf rundll32.exe File opened for modification \??\c:\program files\UnpublishDebug.mid rundll32.exe File opened for modification \??\c:\program files\WatchImport.7z rundll32.exe File created \??\c:\program files (x86)\069d2-readme.txt rundll32.exe File opened for modification \??\c:\program files\ClearConvertTo.temp rundll32.exe File opened for modification \??\c:\program files\CompareRegister.ini rundll32.exe File opened for modification \??\c:\program files\SearchSync.midi rundll32.exe File opened for modification \??\c:\program files\CopyWrite.gif rundll32.exe File opened for modification \??\c:\program files\LimitRemove.png rundll32.exe File opened for modification \??\c:\program files\RestoreConnect.pcx rundll32.exe File opened for modification \??\c:\program files\ReceiveFormat.M2V rundll32.exe File opened for modification \??\c:\program files\SplitEnter.7z rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 10 IoCs
Processes:
rundll32.exepid process 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe 1324 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
rundll32.exevssvc.exedescription pid process Token: SeDebugPrivilege 1324 rundll32.exe Token: SeTakeOwnershipPrivilege 1324 rundll32.exe Token: SeBackupPrivilege 1820 vssvc.exe Token: SeRestorePrivilege 1820 vssvc.exe Token: SeAuditPrivilege 1820 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 836 wrote to memory of 1324 836 rundll32.exe rundll32.exe PID 836 wrote to memory of 1324 836 rundll32.exe rundll32.exe PID 836 wrote to memory of 1324 836 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\sample.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:836 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\sample.dll,#12⤵
- Blocklisted process makes network request
- 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:1324
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:300
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1820