Resubmissions
10/03/2021, 22:42
210310-6calh615fj1010/03/2021, 22:38
210310-7j33lwf7tx1022/01/2021, 00:08
210122-dcvdsabdme10Analysis
- max time kernel
34s - max time network
68s - platform
windows10_x64 - resource
win10v20201028 - submitted
10/03/2021, 22:42
Static task
static1
Behavioral task
behavioral1
Sample
BABUK.exe
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
BABUK.exe
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target BABUK.exe
- Size 38KB
- Sample210310-6calh615fj
- SHA256 afcf265a1dcd9eab5aab270d48aa561e4ddeb71c05e32c857d3b809bb64c0430
- MD5 be76ed428523b9aefe706aeaa72bb6b2
- SHA1 b040f2bdee3999aad415396f9f79e43b2aa9452b
- SHA512 d08870197e1234a8e7115fc8bc0a868841054a0f6d3153a9ad77dad1bb077da3c2af3bdeebf53c6304943a3169ef5ae4fde16ce0e45a421e9afc2b4041a07c5b
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Extracted
Path
-
C:\Boot\bg-BG\How To Restore Your Files.txt
Ransom Note
- ----------- [ Hello, Schauer Agrotronic ] -------------> ****BY BABUK LOCKER**** What happend? ---------------------------------------------- Your computers and servers are encrypted, backups are deleted from your network and copied. We use strong encryption algorithms, so you cannot decrypt your data. But you can restore everything by purchasing a special program from us - a universal decoder. This program will restore your entire network. Follow our instructions below and you will recover all your data. If you continue to ignore this for a long time, we will start reporting the hack to mainstream media and posting your data to the dark web. What guarantees? ---------------------------------------------- We value our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We will also provide support in case of problems. We guarantee to decrypt one file for free. Go to the site and contact us. What information compromised? ---------------------------------------------- We copied more than 50 gb from your internal network, here are some proofs, for additional confirmations, please chat with us In cases of ignoring us, the information will be released to the public. How to contact us? ---------------------------------------------- Using TOR Browser ( https://www.torproject.org/download/ ): http://babukq4e2p4wu4iq.onion/login.php?id=p9gFgBg5TsdcO3mV9mf2RJlJoI0iy1 !!! DANGER !!! DO NOT MODIFY or try to RECOVER any files yourself. We WILL NOT be able to RESTORE them. !!! DANGER !!
URLs
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http://babukq4e2p4wu4iq.onion/login.php?id=p9gFgBg5TsdcO3mV9mf2RJlJoI0iy1
Signatures
- Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
- Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
- Modifies extensions of user files 8 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File renamed C:\Users\Admin\Pictures\FormatEdit.tif => C:\Users\Admin\Pictures\FormatEdit.tif.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\FormatRestore.png => C:\Users\Admin\Pictures\FormatRestore.png.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\EnterSelect.crw => C:\Users\Admin\Pictures\EnterSelect.crw.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\InstallUnprotect.raw => C:\Users\Admin\Pictures\InstallUnprotect.raw.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\SearchRevoke.crw => C:\Users\Admin\Pictures\SearchRevoke.crw.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\ShowCheckpoint.crw => C:\Users\Admin\Pictures\ShowCheckpoint.crw.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\StopGet.crw => C:\Users\Admin\Pictures\StopGet.crw.babyk BABUK.exe File renamed C:\Users\Admin\Pictures\ClearResize.raw => C:\Users\Admin\Pictures\ClearResize.raw.babyk BABUK.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.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) \??\W: BABUK.exe File opened (read-only) \??\U: BABUK.exe File opened (read-only) \??\A: BABUK.exe File opened (read-only) \??\G: BABUK.exe File opened (read-only) \??\X: BABUK.exe File opened (read-only) \??\N: BABUK.exe File opened (read-only) \??\R: BABUK.exe File opened (read-only) \??\T: BABUK.exe File opened (read-only) \??\I: BABUK.exe File opened (read-only) \??\H: BABUK.exe File opened (read-only) \??\J: BABUK.exe File opened (read-only) \??\V: BABUK.exe File opened (read-only) \??\Q: BABUK.exe File opened (read-only) \??\E: BABUK.exe File opened (read-only) \??\O: BABUK.exe File opened (read-only) \??\P: BABUK.exe File opened (read-only) \??\S: BABUK.exe File opened (read-only) \??\F: BABUK.exe File opened (read-only) \??\K: BABUK.exe File opened (read-only) \??\L: BABUK.exe File opened (read-only) \??\B: BABUK.exe File opened (read-only) \??\M: BABUK.exe File opened (read-only) \??\Y: BABUK.exe File opened (read-only) \??\Z: BABUK.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 3660 vssadmin.exe 1196 vssadmin.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe 1108 BABUK.exe - Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 508 vssvc.exe Token: SeRestorePrivilege 508 vssvc.exe Token: SeAuditPrivilege 508 vssvc.exe - Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 2540 ShellExperienceHost.exe 2540 ShellExperienceHost.exe - Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 1108 wrote to memory of 4016 1108 BABUK.exe 73 PID 1108 wrote to memory of 4016 1108 BABUK.exe 73 PID 4016 wrote to memory of 3660 4016 cmd.exe 76 PID 4016 wrote to memory of 3660 4016 cmd.exe 76 PID 1108 wrote to memory of 3616 1108 BABUK.exe 84 PID 1108 wrote to memory of 3616 1108 BABUK.exe 84 PID 3616 wrote to memory of 1196 3616 cmd.exe 86 PID 3616 wrote to memory of 1196 3616 cmd.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\BABUK.exe"C:\Users\Admin\AppData\Local\Temp\BABUK.exe"1⤵
- Modifies extensions of user files
- Drops startup file
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1108 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:4016 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:3660
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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:3616 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:1196
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:508
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C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe"C:\Windows\SystemApps\ShellExperienceHost_cw5n1h2txyewy\ShellExperienceHost.exe" -ServerName:App.AppXtk181tbxbce2qsex02s8tw7hfxa9xb3t.mca1⤵
- Suspicious use of SetWindowsHookEx
PID:2540