Analysis
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max time kernel
150s -
max time network
151s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
05-05-2021 10:52
Static task
static1
Behavioral task
behavioral1
Sample
040818b1b3c9b1bf8245f5bcb4eebbbc.dll
Resource
win7v20210408
Behavioral task
behavioral2
Sample
040818b1b3c9b1bf8245f5bcb4eebbbc.dll
Resource
win10v20210410
General
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Target
040818b1b3c9b1bf8245f5bcb4eebbbc.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:\13j4xcaq2r-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/9654F9AF342C5545
http://decoder.re/9654F9AF342C5545
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 16 496 rundll32.exe 18 496 rundll32.exe 21 496 rundll32.exe 23 496 rundll32.exe 25 496 rundll32.exe 27 496 rundll32.exe 29 496 rundll32.exe 31 496 rundll32.exe 33 496 rundll32.exe 35 496 rundll32.exe 37 496 rundll32.exe 39 496 rundll32.exe 41 496 rundll32.exe 43 496 rundll32.exe 45 496 rundll32.exe 47 496 rundll32.exe 49 496 rundll32.exe 51 496 rundll32.exe 53 496 rundll32.exe 55 496 rundll32.exe 57 496 rundll32.exe 59 496 rundll32.exe 61 496 rundll32.exe 63 496 rundll32.exe 65 496 rundll32.exe 67 496 rundll32.exe 69 496 rundll32.exe 71 496 rundll32.exe 73 496 rundll32.exe 75 496 rundll32.exe 76 496 rundll32.exe 78 496 rundll32.exe 80 496 rundll32.exe 82 496 rundll32.exe 85 496 rundll32.exe 87 496 rundll32.exe 89 496 rundll32.exe 91 496 rundll32.exe 93 496 rundll32.exe 95 496 rundll32.exe 97 496 rundll32.exe 99 496 rundll32.exe 101 496 rundll32.exe 104 496 rundll32.exe 106 496 rundll32.exe 108 496 rundll32.exe 110 496 rundll32.exe 112 496 rundll32.exe 114 496 rundll32.exe 116 496 rundll32.exe 118 496 rundll32.exe 120 496 rundll32.exe 122 496 rundll32.exe 124 496 rundll32.exe 125 496 rundll32.exe 126 496 rundll32.exe 128 496 rundll32.exe 131 496 rundll32.exe 133 496 rundll32.exe 135 496 rundll32.exe 137 496 rundll32.exe 139 496 rundll32.exe 141 496 rundll32.exe 143 496 rundll32.exe -
Modifies extensions of user files 9 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
rundll32.exedescription ioc process File renamed C:\Users\Admin\Pictures\DebugUpdate.png => \??\c:\users\admin\pictures\DebugUpdate.png.13j4xcaq2r rundll32.exe File renamed C:\Users\Admin\Pictures\MoveUnregister.png => \??\c:\users\admin\pictures\MoveUnregister.png.13j4xcaq2r rundll32.exe File opened for modification \??\c:\users\admin\pictures\SearchInstall.tiff rundll32.exe File renamed C:\Users\Admin\Pictures\SkipConfirm.png => \??\c:\users\admin\pictures\SkipConfirm.png.13j4xcaq2r rundll32.exe File opened for modification \??\c:\users\admin\pictures\BlockComplete.tiff rundll32.exe File renamed C:\Users\Admin\Pictures\BlockComplete.tiff => \??\c:\users\admin\pictures\BlockComplete.tiff.13j4xcaq2r rundll32.exe File renamed C:\Users\Admin\Pictures\SearchInstall.tiff => \??\c:\users\admin\pictures\SearchInstall.tiff.13j4xcaq2r rundll32.exe File renamed C:\Users\Admin\Pictures\MeasureWait.raw => \??\c:\users\admin\pictures\MeasureWait.raw.13j4xcaq2r rundll32.exe File renamed C:\Users\Admin\Pictures\PushRequest.png => \??\c:\users\admin\pictures\PushRequest.png.13j4xcaq2r 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) \??\A: rundll32.exe File opened (read-only) \??\E: rundll32.exe File opened (read-only) \??\G: rundll32.exe File opened (read-only) \??\O: rundll32.exe File opened (read-only) \??\P: rundll32.exe File opened (read-only) \??\Z: rundll32.exe File opened (read-only) \??\N: rundll32.exe File opened (read-only) \??\Y: rundll32.exe File opened (read-only) \??\S: rundll32.exe File opened (read-only) \??\T: rundll32.exe File opened (read-only) \??\B: rundll32.exe File opened (read-only) \??\J: rundll32.exe File opened (read-only) \??\K: rundll32.exe File opened (read-only) \??\L: rundll32.exe File opened (read-only) \??\Q: 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) \??\D: rundll32.exe File opened (read-only) \??\F: rundll32.exe File opened (read-only) \??\H: rundll32.exe File opened (read-only) \??\I: rundll32.exe File opened (read-only) \??\M: rundll32.exe File opened (read-only) \??\W: rundll32.exe File opened (read-only) \??\X: rundll32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\cbml1760680.bmp" rundll32.exe -
Drops file in Program Files directory 31 IoCs
Processes:
rundll32.exedescription ioc process File opened for modification \??\c:\program files\RevokePublish.aiff rundll32.exe File opened for modification \??\c:\program files\SubmitSwitch.vsdm rundll32.exe File opened for modification \??\c:\program files\WatchWrite.mp4v rundll32.exe File opened for modification \??\c:\program files\DebugExit.emf rundll32.exe File opened for modification \??\c:\program files\EditExport.emf rundll32.exe File opened for modification \??\c:\program files\OutEnter.eprtx rundll32.exe File opened for modification \??\c:\program files\WatchUnregister.avi rundll32.exe File opened for modification \??\c:\program files\ComparePop.ppsx rundll32.exe File opened for modification \??\c:\program files\ExpandWrite.bat rundll32.exe File opened for modification \??\c:\program files\RevokeTest.dib rundll32.exe File opened for modification \??\c:\program files\UnlockDisable.gif rundll32.exe File opened for modification \??\c:\program files\ConvertFromInitialize.wmf rundll32.exe File opened for modification \??\c:\program files\DenySend.xltx rundll32.exe File opened for modification \??\c:\program files\PushUnpublish.WTV rundll32.exe File opened for modification \??\c:\program files\SuspendPing.vsd rundll32.exe File opened for modification \??\c:\program files\TestResume.otf rundll32.exe File opened for modification \??\c:\program files\MergeSet.vsdm rundll32.exe File opened for modification \??\c:\program files\ReceiveUninstall.csv rundll32.exe File opened for modification \??\c:\program files\RequestWatch.dwfx rundll32.exe File created \??\c:\program files\13j4xcaq2r-readme.txt rundll32.exe File opened for modification \??\c:\program files\CloseUninstall.3g2 rundll32.exe File opened for modification \??\c:\program files\GroupSelect.aiff rundll32.exe File opened for modification \??\c:\program files\JoinConvertFrom.png rundll32.exe File opened for modification \??\c:\program files\MeasureUnregister.zip rundll32.exe File opened for modification \??\c:\program files\ConvertFromExpand.scf rundll32.exe File opened for modification \??\c:\program files\UndoEnable.gif rundll32.exe File created \??\c:\program files (x86)\13j4xcaq2r-readme.txt rundll32.exe File opened for modification \??\c:\program files\LockGrant.jpeg rundll32.exe File opened for modification \??\c:\program files\ExitDeny.m4v rundll32.exe File opened for modification \??\c:\program files\ExitDisable.pptm rundll32.exe File opened for modification \??\c:\program files\UnpublishSuspend.ADT 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 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe 496 rundll32.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
rundll32.exevssvc.exedescription pid process Token: SeDebugPrivilege 496 rundll32.exe Token: SeTakeOwnershipPrivilege 496 rundll32.exe Token: SeBackupPrivilege 3152 vssvc.exe Token: SeRestorePrivilege 3152 vssvc.exe Token: SeAuditPrivilege 3152 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
rundll32.exedescription pid process target process PID 3656 wrote to memory of 496 3656 rundll32.exe rundll32.exe PID 3656 wrote to memory of 496 3656 rundll32.exe rundll32.exe PID 3656 wrote to memory of 496 3656 rundll32.exe rundll32.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\040818b1b3c9b1bf8245f5bcb4eebbbc.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:3656 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\040818b1b3c9b1bf8245f5bcb4eebbbc.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:496
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:1008
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3152