babuk | 7f70c9a586b7ee09f1bff4f642381d5ed72af47381da2f535363776fd30d024b

General

Target

e_win.bin.exe
Size

79KB
MD5

6ce7f33dc923d162788aa3236483701c
SHA1

97395d6f9474638c0d97596a0613aaea04daa547
SHA256

e2dc8fb92ff49643931fe736d002d42f2fb86ba5642ebf44ecbec674a77d8227
SHA512

0d5ac1d3e3e1ee34c94af6288f82ae663f32fb1383aa6b85f16a6691a139743e16f5a25cfcabbc8428d564cb297d90a381a2863c162a01876779c017ae2141df

Score

10^/10

babuk ransomware

Babuk Locker
RaaS first seen in 2021 initially called Vasa Locker.
ransomware babuk
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

Processes:

e_win.bin.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\OutWatch.tiff => C:\Users\Admin\Pictures\OutWatch.tiff.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\OutWatch.tiff.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\WriteSplit.png => C:\Users\Admin\Pictures\WriteSplit.png.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\BlockConnect.tiff	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmEnter.crw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ConfirmEnter.crw => C:\Users\Admin\Pictures\ConfirmEnter.crw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\EditCopy.raw => C:\Users\Admin\Pictures\EditCopy.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\EditCopy.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\OutWatch.tiff	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\WriteSplit.png.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\BlockConnect.tiff => C:\Users\Admin\Pictures\BlockConnect.tiff.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\BlockConnect.tiff.babyk	e_win.bin.exe

Enumerates connected drives 3 TTPs 24 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

Peripheral Device Discovery

System Information Discovery

Processes:

e_win.bin.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exe

pid process

2848 vssadmin.exe
3196 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

e_win.bin.exe

pid process

3916 e_win.bin.exe
3916 e_win.bin.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3728 vssvc.exe
Token: SeRestorePrivilege 3728 vssvc.exe
Token: SeAuditPrivilege 3728 vssvc.exe

pid	process
2848	vssadmin.exe
3196	vssadmin.exe

pid	process
3916	e_win.bin.exe
3916	e_win.bin.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

e_win.bin.execmd.execmd.exe

description	pid	process	target process
PID 3916 wrote to memory of 1500	3916	e_win.bin.exe	cmd.exe
PID 3916 wrote to memory of 1500	3916	e_win.bin.exe	cmd.exe
PID 1500 wrote to memory of 2848	1500	cmd.exe	vssadmin.exe
PID 1500 wrote to memory of 2848	1500	cmd.exe	vssadmin.exe
PID 3916 wrote to memory of 3260	3916	e_win.bin.exe	cmd.exe
PID 3916 wrote to memory of 3260	3916	e_win.bin.exe	cmd.exe
PID 3260 wrote to memory of 3196	3260	cmd.exe	vssadmin.exe
PID 3260 wrote to memory of 3196	3260	cmd.exe	vssadmin.exe