Analysis
-
max time kernel
60s -
max time network
66s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
19-03-2021 21:18
Static task
static1
Behavioral task
behavioral1
Sample
68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9.dll
Resource
win7v20201028
Behavioral task
behavioral2
Sample
68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9.dll
Resource
win10v20201028
General
-
Target
68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9.dll
-
Size
119KB
-
MD5
4f58e4373dd886d6da4268349437e890
-
SHA1
f3b8809bcc84051f1993b7d3f087a5dbf799e913
-
SHA256
68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9
-
SHA512
4e88e24bdefc2e21cf86a7fb12ebb744cb04c8e43c997438c176126c651d1a3aa254e3b47156cbc8f6f8fb8e69be6613b1d07411ad0cb5f37aa1a296bb8f6533
Malware Config
Extracted
C:\6dp1ck6tn-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/D0F63F820A458B4E
http://decoder.re/D0F63F820A458B4E
Signatures
-
Sodin,Sodinokibi,REvil
Ransomware with advanced anti-analysis and privilege escalation functionality.
-
Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
regsvr32.exedescription ioc process File renamed C:\Users\Admin\Pictures\CheckpointOpen.tif => \??\c:\users\admin\pictures\CheckpointOpen.tif.6dp1ck6tn regsvr32.exe File opened for modification \??\c:\users\admin\pictures\CopyUnblock.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\CopyUnblock.tiff => \??\c:\users\admin\pictures\CopyUnblock.tiff.6dp1ck6tn regsvr32.exe File renamed C:\Users\Admin\Pictures\EnterSwitch.tif => \??\c:\users\admin\pictures\EnterSwitch.tif.6dp1ck6tn regsvr32.exe File opened for modification \??\c:\users\admin\pictures\StopResolve.tiff regsvr32.exe File renamed C:\Users\Admin\Pictures\TraceDismount.raw => \??\c:\users\admin\pictures\TraceDismount.raw.6dp1ck6tn regsvr32.exe File renamed C:\Users\Admin\Pictures\StopResolve.tiff => \??\c:\users\admin\pictures\StopResolve.tiff.6dp1ck6tn regsvr32.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
regsvr32.exedescription ioc process File opened (read-only) \??\Q: regsvr32.exe File opened (read-only) \??\R: regsvr32.exe File opened (read-only) \??\S: regsvr32.exe File opened (read-only) \??\K: regsvr32.exe File opened (read-only) \??\V: regsvr32.exe File opened (read-only) \??\X: regsvr32.exe File opened (read-only) \??\Y: regsvr32.exe File opened (read-only) \??\E: regsvr32.exe File opened (read-only) \??\B: regsvr32.exe File opened (read-only) \??\G: regsvr32.exe File opened (read-only) \??\H: regsvr32.exe File opened (read-only) \??\L: regsvr32.exe File opened (read-only) \??\M: regsvr32.exe File opened (read-only) \??\O: regsvr32.exe File opened (read-only) \??\P: regsvr32.exe File opened (read-only) \??\A: regsvr32.exe File opened (read-only) \??\W: regsvr32.exe File opened (read-only) \??\D: regsvr32.exe File opened (read-only) \??\T: regsvr32.exe File opened (read-only) \??\I: regsvr32.exe File opened (read-only) \??\J: regsvr32.exe File opened (read-only) \??\N: regsvr32.exe File opened (read-only) \??\U: regsvr32.exe File opened (read-only) \??\Z: regsvr32.exe File opened (read-only) \??\F: regsvr32.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
regsvr32.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\19acs31n3626.bmp" regsvr32.exe -
Drops file in Program Files directory 34 IoCs
Processes:
regsvr32.exedescription ioc process File opened for modification \??\c:\program files\RemoveBlock.xsl regsvr32.exe File opened for modification \??\c:\program files\UpdateReceive.aif regsvr32.exe File created \??\c:\program files\6dp1ck6tn-readme.txt regsvr32.exe File opened for modification \??\c:\program files\DebugMount.mpeg regsvr32.exe File opened for modification \??\c:\program files\MergeSync.wma regsvr32.exe File opened for modification \??\c:\program files\ApproveConnect.pdf regsvr32.exe File opened for modification \??\c:\program files\DebugRemove.ppsx regsvr32.exe File opened for modification \??\c:\program files\NewRestore.iso regsvr32.exe File opened for modification \??\c:\program files\PublishMerge.mhtml regsvr32.exe File opened for modification \??\c:\program files\ResumeRegister.dot regsvr32.exe File opened for modification \??\c:\program files\SubmitRename.vb regsvr32.exe File opened for modification \??\c:\program files\UnregisterStop.bmp regsvr32.exe File opened for modification \??\c:\program files\ConnectGroup.rtf regsvr32.exe File opened for modification \??\c:\program files\ConvertFromComplete.xltx regsvr32.exe File opened for modification \??\c:\program files\DenyGroup.rar regsvr32.exe File opened for modification \??\c:\program files\DisableLock.xltx regsvr32.exe File opened for modification \??\c:\program files\ResetPublish.mov regsvr32.exe File opened for modification \??\c:\program files\SwitchInstall.fon regsvr32.exe File opened for modification \??\c:\program files\ClearPing.ps1xml regsvr32.exe File opened for modification \??\c:\program files\ResizeEnter.fon regsvr32.exe File opened for modification \??\c:\program files\RestoreMove.au regsvr32.exe File opened for modification \??\c:\program files\RestoreRevoke.xlsb regsvr32.exe File opened for modification \??\c:\program files\StopMeasure.ods regsvr32.exe File opened for modification \??\c:\program files\ConfirmHide.vb regsvr32.exe File opened for modification \??\c:\program files\DebugLock.au regsvr32.exe File opened for modification \??\c:\program files\ExportInvoke.wav regsvr32.exe File opened for modification \??\c:\program files\MeasureOpen.iso regsvr32.exe File opened for modification \??\c:\program files\UninstallInitialize.pptm regsvr32.exe File created \??\c:\program files (x86)\6dp1ck6tn-readme.txt regsvr32.exe File opened for modification \??\c:\program files\StartExpand.css regsvr32.exe File opened for modification \??\c:\program files\StepEnter.jpg regsvr32.exe File opened for modification \??\c:\program files\InitializeCopy.vsw regsvr32.exe File opened for modification \??\c:\program files\ResetMove.xml regsvr32.exe File opened for modification \??\c:\program files\MeasureLimit.asp regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
regsvr32.exepid process 2168 regsvr32.exe 2168 regsvr32.exe 2168 regsvr32.exe 2168 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
regsvr32.exevssvc.exedescription pid process Token: SeDebugPrivilege 2168 regsvr32.exe Token: SeTakeOwnershipPrivilege 2168 regsvr32.exe Token: SeBackupPrivilege 2840 vssvc.exe Token: SeRestorePrivilege 2840 vssvc.exe Token: SeAuditPrivilege 2840 vssvc.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
regsvr32.exedescription pid process target process PID 644 wrote to memory of 2168 644 regsvr32.exe regsvr32.exe PID 644 wrote to memory of 2168 644 regsvr32.exe regsvr32.exe PID 644 wrote to memory of 2168 644 regsvr32.exe regsvr32.exe
Processes
-
C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9.dll1⤵
- Suspicious use of WriteProcessMemory
PID:644 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\68ca9793d2249248669a6e637ebd25ab3d6accda4da0727112496fa1c5bc8af9.dll2⤵
- 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:2168
-
C:\Windows\system32\wbem\unsecapp.exeC:\Windows\system32\wbem\unsecapp.exe -Embedding1⤵PID:4092
-
C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2840
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
-
memory/2168-2-0x0000000000000000-mapping.dmp