Analysis
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max time kernel
77s -
max time network
111s -
platform
windows10_x64 -
resource
win10v20210410 -
submitted
02-05-2021 21:33
Static task
static1
Behavioral task
behavioral1
Sample
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe
Resource
win7v20210410
Behavioral task
behavioral2
Sample
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe
Resource
win10v20210410
General
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Target
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe
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Size
79KB
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MD5
eacfeff2add22da202bc6ba34308989e
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SHA1
7b41f9077fba77d9a3115c3e8142c3f15c81d84a
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SHA256
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b
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SHA512
481912d2271a9c96147dd91c03b4180abfa16a99525a27779bba996dd893d87aae8e58d3da41250aa20020827e777b457dad0e9a21b55b898dd99248db74e74f
Malware Config
Extracted
C:\How To Restore Your Files.txt
http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/blog/da83db34f2e0c077f7b064e6556f127c0a91d7ae21f3855f0e7279ce14d5f406/
http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/
http://vq3zf757tzpwhs7bulnr43d2rfg5fkvvfkhee2zhhzievuxrbnarmgqd.onion/3fbf8f220dae00bb6bb8539b9c6c86c4bf5c58ccf651542e3363dd131239edd6
Signatures
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Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
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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 19 IoCs
Ransomware generally changes the extension on encrypted files.
Processes:
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exedescription ioc Process File opened for modification C:\Users\Admin\Pictures\SyncPing.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\UninstallReceive.tif => C:\Users\Admin\Pictures\UninstallReceive.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\RepairGet.tiff 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\ResolveExpand.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\SyncPing.tif => C:\Users\Admin\Pictures\SyncPing.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\WatchReceive.tiff 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\JoinDisconnect.raw => C:\Users\Admin\Pictures\JoinDisconnect.raw.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\JoinDisconnect.raw.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\OptimizeDebug.tiff => C:\Users\Admin\Pictures\OptimizeDebug.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\UninstallReceive.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\RepairGet.tiff => C:\Users\Admin\Pictures\RepairGet.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\ResolveExpand.tif => C:\Users\Admin\Pictures\ResolveExpand.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\ResumeRename.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\ResumeRename.tif => C:\Users\Admin\Pictures\ResumeRename.tif.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File renamed C:\Users\Admin\Pictures\WatchReceive.tiff => C:\Users\Admin\Pictures\WatchReceive.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\WatchReceive.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\OptimizeDebug.tiff 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\OptimizeDebug.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened for modification C:\Users\Admin\Pictures\RepairGet.tiff.babyk 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
Processes:
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exedescription ioc Process File opened (read-only) \??\U: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\G: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\W: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\R: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\O: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\S: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\H: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\J: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\L: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\N: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\Y: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\I: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\T: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\A: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\F: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\X: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\B: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\M: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\Q: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\E: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\Z: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\V: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\P: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe File opened (read-only) \??\K: 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.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.
Processes:
vssadmin.exevssadmin.exepid Process 2776 vssadmin.exe 2560 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exepid Process 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid Process Token: SeBackupPrivilege 1368 vssvc.exe Token: SeRestorePrivilege 1368 vssvc.exe Token: SeAuditPrivilege 1368 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
Processes:
54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.execmd.execmd.exedescription pid Process procid_target PID 3944 wrote to memory of 2012 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe 74 PID 3944 wrote to memory of 2012 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe 74 PID 2012 wrote to memory of 2776 2012 cmd.exe 77 PID 2012 wrote to memory of 2776 2012 cmd.exe 77 PID 3944 wrote to memory of 4080 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe 81 PID 3944 wrote to memory of 4080 3944 54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe 81 PID 4080 wrote to memory of 2560 4080 cmd.exe 83 PID 4080 wrote to memory of 2560 4080 cmd.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe"C:\Users\Admin\AppData\Local\Temp\54c82ad27174fd6ed72793b1ccf9d26613eb572960e847a63538420c69d06c5b.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3944 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:2012 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2776
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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:4080 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2560
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1368