Analysis
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max time kernel
24s -
max time network
103s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
25-01-2021 20:45
Static task
static1
Behavioral task
behavioral1
Sample
babuk_v4.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
babuk_v4.exe
Resource
win10v20201028
General
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Target
babuk_v4.exe
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Size
30KB
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MD5
9478050023c7f8668df4fc39b0ddd79c
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SHA1
7925725cfb04d796f497e5142cba62860fbf87a9
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SHA256
3dda3ee9164d6815a18a2c23651a53c35d52e3a5ad375001ec824cf532c202e6
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SHA512
74bbf45112de1bf0d51ab0295118035a7e2c2028dd9b03bb8e222b9ccf6e077014c6b5d211b9d3ebe6434a41d883bcae14a0a3e969550ef094b30b73a38514e9
Malware Config
Extracted
C:\Boot\bg-BG\How To Restore Your Files.txt
http://gtmx56k4hutn3ikv.onion/?h2giV0RRxo38Z2pWhBTs
http://gtmx56k4hutn3ikv.onion/
http://babukq4e2p4wu4iq.onion/login.php?id=MNn0Flxa2JVxrT2gAiMfYdmAzyvUGi
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 12 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\OutBlock.raw.babyk babuk_v4.exe File opened for modification C:\Users\Admin\Pictures\ResizeEnable.raw.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\SetGet.crw => C:\Users\Admin\Pictures\SetGet.crw.babyk babuk_v4.exe File opened for modification C:\Users\Admin\Pictures\SetGet.crw.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\EditResolve.tif => C:\Users\Admin\Pictures\EditResolve.tif.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\InitializeRequest.crw => C:\Users\Admin\Pictures\InitializeRequest.crw.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\OptimizeWatch.crw => C:\Users\Admin\Pictures\OptimizeWatch.crw.babyk babuk_v4.exe File opened for modification C:\Users\Admin\Pictures\OptimizeWatch.crw.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\OutBlock.raw => C:\Users\Admin\Pictures\OutBlock.raw.babyk babuk_v4.exe File renamed C:\Users\Admin\Pictures\ResizeEnable.raw => C:\Users\Admin\Pictures\ResizeEnable.raw.babyk babuk_v4.exe File opened for modification C:\Users\Admin\Pictures\EditResolve.tif.babyk babuk_v4.exe File opened for modification C:\Users\Admin\Pictures\InitializeRequest.crw.babyk babuk_v4.exe -
Drops startup file 1 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\How To Restore Your Files.txt babuk_v4.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) \??\B: babuk_v4.exe File opened (read-only) \??\I: babuk_v4.exe File opened (read-only) \??\K: babuk_v4.exe File opened (read-only) \??\L: babuk_v4.exe File opened (read-only) \??\X: babuk_v4.exe File opened (read-only) \??\W: babuk_v4.exe File opened (read-only) \??\P: babuk_v4.exe File opened (read-only) \??\S: babuk_v4.exe File opened (read-only) \??\U: babuk_v4.exe File opened (read-only) \??\O: babuk_v4.exe File opened (read-only) \??\A: babuk_v4.exe File opened (read-only) \??\F: babuk_v4.exe File opened (read-only) \??\Q: babuk_v4.exe File opened (read-only) \??\E: babuk_v4.exe File opened (read-only) \??\T: babuk_v4.exe File opened (read-only) \??\Y: babuk_v4.exe File opened (read-only) \??\V: babuk_v4.exe File opened (read-only) \??\M: babuk_v4.exe File opened (read-only) \??\G: babuk_v4.exe File opened (read-only) \??\H: babuk_v4.exe File opened (read-only) \??\J: babuk_v4.exe File opened (read-only) \??\Z: babuk_v4.exe File opened (read-only) \??\R: babuk_v4.exe File opened (read-only) \??\N: babuk_v4.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 4316 vssadmin.exe 1596 vssadmin.exe -
Modifies Control Panel 1 IoCs
description ioc Process Key created \REGISTRY\USER\S-1-5-21-3341490333-719741536-2920803124-1000\Control Panel\Colors ShellExperienceHost.exe -
Suspicious behavior: EnumeratesProcesses 280 IoCs
pid Process 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe 4804 babuk_v4.exe -
Suspicious behavior: RenamesItself 1 IoCs
pid Process 4804 babuk_v4.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 2172 vssvc.exe Token: SeRestorePrivilege 2172 vssvc.exe Token: SeAuditPrivilege 2172 vssvc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1412 ShellExperienceHost.exe 1412 ShellExperienceHost.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4804 wrote to memory of 4252 4804 babuk_v4.exe 74 PID 4804 wrote to memory of 4252 4804 babuk_v4.exe 74 PID 4252 wrote to memory of 4316 4252 cmd.exe 76 PID 4252 wrote to memory of 4316 4252 cmd.exe 76 PID 4804 wrote to memory of 1164 4804 babuk_v4.exe 81 PID 4804 wrote to memory of 1164 4804 babuk_v4.exe 81 PID 1164 wrote to memory of 1596 1164 cmd.exe 84 PID 1164 wrote to memory of 1596 1164 cmd.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\babuk_v4.exe"C:\Users\Admin\AppData\Local\Temp\babuk_v4.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4804 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4252 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:4316
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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:1164 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1596
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2172
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C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe"C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca1⤵
- Modifies Control Panel
- Suspicious use of SetWindowsHookEx
PID:1412