Analysis
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max time kernel
175s -
max time network
183s -
platform
windows10_x64 -
resource
win10-en-20211208 -
submitted
24-01-2022 01:26
Static task
static1
Behavioral task
behavioral1
Sample
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe
Resource
win10-en-20211208
General
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Target
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe
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Size
166KB
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MD5
a055246b0e804eb3a1dda52937f556ef
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SHA1
6807425e1252f1154664fc8072dde03558ed35fe
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SHA256
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3
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SHA512
18b2308905d95dff7a2a3e2cd3559325d6e3cfdeb45c48e3fd6df0fdbaee27ea3e191cc344505ad2e32f4136de6c8d2b2bbbac121486002707f1a617e2a49a95
Malware Config
Extracted
C:\c5xlb2elr-readme.txt
sodinokibi
http://aplebzu47wgazapdqks6vrcv6zcnjppkbxbr6wketf56nf6aq2nmyoyd.onion/B92ADE5C9164AE81
http://decryptor.cc/B92ADE5C9164AE81
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 7 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription ioc process File renamed C:\Users\Admin\Pictures\TestLimit.crw => \??\c:\users\admin\pictures\TestLimit.crw.c5xlb2elr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File renamed C:\Users\Admin\Pictures\UseWatch.raw => \??\c:\users\admin\pictures\UseWatch.raw.c5xlb2elr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File renamed C:\Users\Admin\Pictures\UnpublishUninstall.raw => \??\c:\users\admin\pictures\UnpublishUninstall.raw.c5xlb2elr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\users\admin\pictures\RepairSplit.tiff a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\users\admin\pictures\SkipOut.tiff a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File renamed C:\Users\Admin\Pictures\RepairSplit.tiff => \??\c:\users\admin\pictures\RepairSplit.tiff.c5xlb2elr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File renamed C:\Users\Admin\Pictures\SkipOut.tiff => \??\c:\users\admin\pictures\SkipOut.tiff.c5xlb2elr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\k51299BQXH = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe" a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe -
Enumerates connected drives 3 TTPs 25 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription ioc process File opened (read-only) \??\O: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\P: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\A: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\H: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\J: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\N: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\T: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\D: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\B: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\G: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\I: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\K: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\X: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\F: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\L: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\R: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\V: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\U: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\W: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\Y: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\Z: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\E: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\M: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\Q: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened (read-only) \??\S: a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe -
Sets desktop wallpaper using registry 2 TTPs 1 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-369956170-74428499-1628131376-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4v3.bmp" a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe -
Drops file in Program Files directory 28 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription ioc process File opened for modification \??\c:\program files\InvokeConvert.001 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\OutLock.edrwx a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\SubmitWatch.au3 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\SearchInitialize.dib a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\StartDisconnect.jpeg a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\UnblockRemove.WTV a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\UnpublishMove.nfo a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ConvertFromRegister.3gp a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\MeasureUnregister.aif a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\NewCompress.ttc a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ResizeNew.gif a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\UndoRepair.contact a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ConnectSend.clr a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\GrantSearch.au3 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\MeasureDebug.zip a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ReadRequest.zip a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\PingNew.vsdx a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\SearchTrace.m1v a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\MountClose.WTV a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\PingReceive.mpv2 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File created \??\c:\program files (x86)\c5xlb2elr-readme.txt a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\CompressUnpublish.easmx a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ConvertToUnregister.tif a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\WatchStart.mhtml a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File created \??\c:\program files\c5xlb2elr-readme.txt a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\CompleteConnect.rtf a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\ConvertFromCopy.pcx a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe File opened for modification \??\c:\program files\CopyExit.ttf a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exepowershell.exepid process 3496 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe 3496 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe 600 powershell.exe 600 powershell.exe 600 powershell.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exepowershell.exevssvc.exedescription pid process Token: SeDebugPrivilege 3496 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe Token: SeDebugPrivilege 600 powershell.exe Token: SeBackupPrivilege 3792 vssvc.exe Token: SeRestorePrivilege 3792 vssvc.exe Token: SeAuditPrivilege 3792 vssvc.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exedescription pid process target process PID 3496 wrote to memory of 600 3496 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe powershell.exe PID 3496 wrote to memory of 600 3496 a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe powershell.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.exe"C:\Users\Admin\AppData\Local\Temp\a29f63484f53d2cf832b2bc70d6b66378b87b86221f885d0f43166503d631ef3.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
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepowershell -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==2⤵
- 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
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/600-124-0x000001FEF4CC0000-0x000001FEF4CE2000-memory.dmpFilesize
136KB
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memory/600-129-0x000001FEF6F70000-0x000001FEF6FE6000-memory.dmpFilesize
472KB
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memory/600-136-0x000001FEDCC50000-0x000001FEF4D20000-memory.dmpFilesize
384.8MB
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memory/600-139-0x000001FEDCC50000-0x000001FEF4D20000-memory.dmpFilesize
384.8MB
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memory/600-166-0x000001FEDCC50000-0x000001FEF4D20000-memory.dmpFilesize
384.8MB