Analysis
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max time kernel
80s -
max time network
25s -
platform
windows10_x64 -
resource
win10-en-20210920 -
submitted
20-10-2021 12:17
Static task
static1
Behavioral task
behavioral1
Sample
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe
Resource
win10-en-20210920
General
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Target
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe
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Size
120KB
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MD5
9a24b3de7af3b2a2f1917e72e64da268
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SHA1
783bebb04eda5a88851aa741133ae49c29f44415
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SHA256
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d
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SHA512
631b8165326463749e8bb01e74304343158b4cd4c6c4e4a8e60922a298b90dab9c83c60fd69c4eda8ddf2dcf97c4040dc723f7e9beeb9a94aee568c30867044d
Malware Config
Extracted
C:\5f2tk2-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/96EC8990C36043C3
http://decoder.re/96EC8990C36043C3
Signatures
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Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
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Modifies extensions of user files 4 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exedescription ioc process File renamed C:\Users\Admin\Pictures\BlockSkip.tif => \??\c:\users\admin\pictures\BlockSkip.tif.5f2tk2 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File renamed C:\Users\Admin\Pictures\DismountUninstall.png => \??\c:\users\admin\pictures\DismountUninstall.png.5f2tk2 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File renamed C:\Users\Admin\Pictures\UnpublishUpdate.png => \??\c:\users\admin\pictures\UnpublishUpdate.png.5f2tk2 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File renamed C:\Users\Admin\Pictures\WatchDisable.png => \??\c:\users\admin\pictures\WatchDisable.png.5f2tk2 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.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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Adds Run key to start application 2 TTPs 2 IoCs
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\aDTFUAIa7j = "C:\\Users\\Admin\\AppData\\Local\\Temp\\939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe" 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exedescription ioc process File opened (read-only) \??\D: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\A: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\J: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\M: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\W: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\Y: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\K: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\L: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\O: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\B: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\E: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\F: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\G: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\I: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\U: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\Z: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\H: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\P: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\S: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\V: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\X: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\N: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\Q: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\R: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened (read-only) \??\T: 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\r4yb021h68.bmp" 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe -
Drops file in Program Files directory 31 IoCs
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exedescription ioc process File opened for modification \??\c:\program files\PingExit.gif 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\StartConnect.bmp 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\FindRestore.mpp 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\RevokeConvert.docx 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\SuspendEnter.vsdm 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\UnblockOptimize.rtf 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\MoveUnregister.fon 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\SwitchCompare.vbs 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\SwitchTrace.wpl 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\SubmitExit.temp 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\GroupBlock.rtf 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\RenameBlock.mov 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\SearchConvert.ttc 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\WaitDebug.txt 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\GetRegister.asp 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\OutRegister.wmx 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\UnprotectLimit.txt 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\MoveRevoke.m3u 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\EnableLock.wvx 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\GroupDeny.M2V 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\RestoreTrace.mht 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\CloseResolve.wmf 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File created \??\c:\program files (x86)\5f2tk2-readme.txt 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\MountSave.dib 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\UnprotectPush.pcx 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\UnregisterWatch.ppt 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File created \??\c:\program files\5f2tk2-readme.txt 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\GrantUnprotect.mp2 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\LimitCompress.jpg 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\LockSelect.pub 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe File opened for modification \??\c:\program files\CheckpointClose.vsdm 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exepid process 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exevssvc.exedescription pid process Token: SeDebugPrivilege 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe Token: SeTakeOwnershipPrivilege 3464 939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe Token: SeBackupPrivilege 4404 vssvc.exe Token: SeRestorePrivilege 4404 vssvc.exe Token: SeAuditPrivilege 4404 vssvc.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe"C:\Users\Admin\AppData\Local\Temp\939f58c10211a768f664a8f54310dcc42eb672887be61d5d377b5a88be107b9d.bin.sample.exe"1⤵
- Modifies extensions of user files
- Adds Run key to start application
- Enumerates connected drives
- Sets desktop wallpaper using registry
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken