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Analysis
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max time kernel
40s -
max time network
43s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
21/12/2022, 17:48
Static task
static1
Behavioral task
behavioral1
Sample
91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe
Resource
win10v2004-20220901-en
General
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Target
91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe
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Size
71KB
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MD5
b3f5d8a881bf8c1c0431cb6b9747918f
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SHA1
7c2b61a227133ce76c2b2fa95945c82647cfb5fc
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SHA256
91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25
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SHA512
1872ab6ecf9fd7035472a51f4eba681e26674532d0a86604bdee8c77c33234426aaf90b02c572572c412482f19f81388f2110787bb2fa04b04be08308a54e15b
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SSDEEP
768:HnI8FVk+TrPonxlCpMZTJcNGsryeqpNaO4izP2UCXkwdbA/aNtGBVsKB/sQ7cF9R:oo+6PikSZl7e6rW0wdbAyNcQDmnZS
Malware Config
Extracted
\??\M:\How To Restore Your Files.txt
http://453aluxcu5vgxm4nqqui4ubbzoa5menbb4dyw3nc2rceqqgy7ms5grid.onion/hZwKUVTZ644VCbE3-19k
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 16 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\DenyAssert.crw => C:\Users\Admin\Pictures\DenyAssert.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\ExpandImport.crw => C:\Users\Admin\Pictures\ExpandImport.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\ProtectEnable.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\CopyCheckpoint.raw => C:\Users\Admin\Pictures\CopyCheckpoint.raw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\DenyAssert.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\ExpandImport.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\MergeReset.crw => C:\Users\Admin\Pictures\MergeReset.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\SkipBackup.tif.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\CopyCheckpoint.raw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\ExportUnblock.png => C:\Users\Admin\Pictures\ExportUnblock.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\MergeReset.crw.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\ProtectEnable.png => C:\Users\Admin\Pictures\ProtectEnable.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\ExportUnblock.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\SetMove.png => C:\Users\Admin\Pictures\SetMove.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened for modification C:\Users\Admin\Pictures\SetMove.png.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File renamed C:\Users\Admin\Pictures\SkipBackup.tif => C:\Users\Admin\Pictures\SkipBackup.tif.dataf 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\J: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\T: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\Y: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\I: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\O: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\A: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\V: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\E: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\R: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\S: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\H: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\L: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\N: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\M: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\Q: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\U: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\F: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\G: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\K: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\Z: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\X: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\B: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\W: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe File opened (read-only) \??\P: 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 1680 vssadmin.exe 1108 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 1700 vssvc.exe Token: SeRestorePrivilege 1700 vssvc.exe Token: SeAuditPrivilege 1700 vssvc.exe -
Suspicious use of WriteProcessMemory 14 IoCs
description pid Process procid_target PID 1504 wrote to memory of 1336 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 26 PID 1504 wrote to memory of 1336 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 26 PID 1504 wrote to memory of 1336 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 26 PID 1504 wrote to memory of 1336 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 26 PID 1336 wrote to memory of 1108 1336 cmd.exe 28 PID 1336 wrote to memory of 1108 1336 cmd.exe 28 PID 1336 wrote to memory of 1108 1336 cmd.exe 28 PID 1504 wrote to memory of 1960 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 33 PID 1504 wrote to memory of 1960 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 33 PID 1504 wrote to memory of 1960 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 33 PID 1504 wrote to memory of 1960 1504 91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe 33 PID 1960 wrote to memory of 1680 1960 cmd.exe 35 PID 1960 wrote to memory of 1680 1960 cmd.exe 35 PID 1960 wrote to memory of 1680 1960 cmd.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe"C:\Users\Admin\AppData\Local\Temp\91bd5168b9b0026bfcc02f4a30c11f76d8663ef3ccf734afcc490098b517fa25.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1504 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1336 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1108
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1960 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1680
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1700