Analysis
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max time kernel
151s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
16-07-2022 16:53
Static task
static1
Behavioral task
behavioral1
Sample
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe
Resource
win7-20220715-en
Behavioral task
behavioral2
Sample
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe
Resource
win10v2004-20220414-en
General
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Target
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe
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Size
92KB
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MD5
7cdc8057b3fe13b069b8db93fdde1764
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SHA1
8ddd3c69fe3935e4903a2b397bc6f0de772a1bcb
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SHA256
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c
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SHA512
7a7778b03a681bad08722019d27c2ca56609cbe6ec6e976b2d08e402b7ec5f2c7ad7d935632c0958b15b42d3dd066b1bd03707a778d77592a29b92adae684801
Malware Config
Extracted
C:\Restore-My-Files.txt
darkylock
1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i
Signatures
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DarkyLock
Ransomware family first seen in July 2022.
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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 8 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exedescription ioc process File opened for modification C:\Users\Admin\Pictures\ClearConvert.tif.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened for modification C:\Users\Admin\Pictures\CompareBackup.raw.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File renamed C:\Users\Admin\Pictures\ConfirmCompress.png => C:\Users\Admin\Pictures\ConfirmCompress.png.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened for modification C:\Users\Admin\Pictures\ConfirmCompress.png.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File renamed C:\Users\Admin\Pictures\AssertSave.crw => C:\Users\Admin\Pictures\AssertSave.crw.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened for modification C:\Users\Admin\Pictures\AssertSave.crw.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File renamed C:\Users\Admin\Pictures\ClearConvert.tif => C:\Users\Admin\Pictures\ClearConvert.tif.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File renamed C:\Users\Admin\Pictures\CompareBackup.raw => C:\Users\Admin\Pictures\CompareBackup.raw.darky 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exedescription ioc process File opened (read-only) \??\L: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\Z: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\X: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\V: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\N: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\G: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\J: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\H: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\B: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\U: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\F: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\Y: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\O: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\A: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\W: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\R: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\T: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\I: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\P: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\S: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\K: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\M: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\Q: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe File opened (read-only) \??\E: 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.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 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 3196 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exepid process 2284 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe 2284 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 4316 vssvc.exe Token: SeRestorePrivilege 4316 vssvc.exe Token: SeAuditPrivilege 4316 vssvc.exe -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.execmd.exedescription pid process target process PID 2284 wrote to memory of 1988 2284 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe cmd.exe PID 2284 wrote to memory of 1988 2284 393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe cmd.exe PID 1988 wrote to memory of 3196 1988 cmd.exe vssadmin.exe PID 1988 wrote to memory of 3196 1988 cmd.exe vssadmin.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe"C:\Users\Admin\AppData\Local\Temp\393a7a313548a4edc025fb47c6c8e614ecc2b41db880ecb59f20cf238e9a864c.exe"1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2284 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:1988 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:3196
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4316