Analysis
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max time kernel
155s -
max time network
150s -
platform
windows7_x64 -
resource
win7-en-20211208 -
submitted
16-02-2022 22:32
Static task
static1
Behavioral task
behavioral1
Sample
fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a.dll
Resource
win7-en-20211208
Behavioral task
behavioral2
Sample
fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a.dll
Resource
win10v2004-en-20220113
General
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Target
fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a.dll
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Size
591KB
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MD5
c043c153237b334df2f2934f7640e802
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SHA1
d5ef91b849122109615007329ec6548830f13bfc
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SHA256
fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a
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SHA512
e1a3005257891e496b42a2f6917e904e224e8b0efbf47f43e763e99e98f8d5766ec94cdae2184cf9fe7e0d539e5d25fd4f7dd7bb1009af6f7c897edd97087a77
Malware Config
Extracted
C:\DECRYPT-FILES.txt
maze
http://aoacugmutagkwctu.onion/6c610cc5397c1559
https://mazedecrypt.top/6c610cc5397c1559
Signatures
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Maze
Ransomware family also known as ChaCha.
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Drops startup file 2 IoCs
Processes:
regsvr32.exedescription ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6c610cc5397c1559.tmp regsvr32.exe -
Drops file in Program Files directory 29 IoCs
Processes:
regsvr32.exedescription ioc Process File created C:\Program Files (x86)\DECRYPT-FILES.txt regsvr32.exe File created C:\Program Files\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\FindGrant.mpp regsvr32.exe File opened for modification C:\Program Files\StopShow.ps1xml regsvr32.exe File opened for modification C:\Program Files\TraceRepair.mov regsvr32.exe File opened for modification C:\Program Files\ResumeExpand.bat regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\6c610cc5397c1559.tmp regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\UnpublishEnable.mov regsvr32.exe File opened for modification C:\Program Files\6c610cc5397c1559.tmp regsvr32.exe File opened for modification C:\Program Files\OpenSplit.tmp regsvr32.exe File opened for modification C:\Program Files\PingComplete.asx regsvr32.exe File opened for modification C:\Program Files\UnlockDeny.wps regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\Desktop\6c610cc5397c1559.tmp regsvr32.exe File opened for modification C:\Program Files\CompareMount.wav regsvr32.exe File opened for modification C:\Program Files\RestoreJoin.xml regsvr32.exe File opened for modification C:\Program Files (x86)\6c610cc5397c1559.tmp regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files\GroupNew.m4v regsvr32.exe File opened for modification C:\Program Files\CloseUse.mpeg2 regsvr32.exe File opened for modification C:\Program Files\TestExit.bmp regsvr32.exe File opened for modification C:\Program Files\TracePublish.gif regsvr32.exe File opened for modification C:\Program Files\WatchCheckpoint.001 regsvr32.exe File created C:\Program Files (x86)\Microsoft SQL Server Compact Edition\DECRYPT-FILES.txt regsvr32.exe File opened for modification C:\Program Files (x86)\Microsoft SQL Server Compact Edition\v3.5\6c610cc5397c1559.tmp regsvr32.exe File opened for modification C:\Program Files\ConnectMerge.rm regsvr32.exe File opened for modification C:\Program Files\DebugStep.vdx regsvr32.exe File opened for modification C:\Program Files\ExitImport.txt regsvr32.exe File opened for modification C:\Program Files\SendRemove.js regsvr32.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
regsvr32.exepid Process 1192 regsvr32.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid Process Token: SeBackupPrivilege 604 vssvc.exe Token: SeRestorePrivilege 604 vssvc.exe Token: SeAuditPrivilege 604 vssvc.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
regsvr32.exedescription pid Process procid_target PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27 PID 1772 wrote to memory of 1192 1772 regsvr32.exe 27
Processes
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a.dll1⤵
- Suspicious use of WriteProcessMemory
PID:1772 -
C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\fb5de69b222d81fea2f4b08fd5af612faf24b9e75698ac331af066fbc360a30a.dll2⤵
- Drops startup file
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
PID:1192
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:604