babuk | 1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90

General

Target

e_win.exe
Size

79KB
MD5

92832ae49373b56748817cb5398ed706
SHA1

61e4505d605882b809d9c7f3dcbf163ff1678382
SHA256

1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
SHA512

398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858

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 13 IoCs

Ransomware generally changes the extension on encrypted files.

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ClearAssert.tif => C:\Users\Admin\Pictures\ClearAssert.tif.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\ClearAssert.tif.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\CheckpointRestart.crw.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\ConnectUnprotect.tif => C:\Users\Admin\Pictures\ConnectUnprotect.tif.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\ConnectUnprotect.tif.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\ConvertUninstall.tiff => C:\Users\Admin\Pictures\ConvertUninstall.tiff.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\OpenAdd.raw.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\CheckpointRestart.crw => C:\Users\Admin\Pictures\CheckpointRestart.crw.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertUninstall.tiff	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertUninstall.tiff.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\OpenAdd.raw => C:\Users\Admin\Pictures\OpenAdd.raw.babyk	e_win.exe
File renamed	C:\Users\Admin\Pictures\RenameSearch.png => C:\Users\Admin\Pictures\RenameSearch.png.babyk	e_win.exe
File opened for modification	C:\Users\Admin\Pictures\RenameSearch.png.babyk	e_win.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

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.

File Deletion

Inhibit System Recovery

pid	Process
2020	vssadmin.exe
1244	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1824	e_win.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1824 wrote to memory of 2000	1824	e_win.exe	26
PID 1824 wrote to memory of 2000	1824	e_win.exe	26
PID 1824 wrote to memory of 2000	1824	e_win.exe	26
PID 1824 wrote to memory of 2000	1824	e_win.exe	26
PID 2000 wrote to memory of 2020	2000	cmd.exe	28
PID 2000 wrote to memory of 2020	2000	cmd.exe	28
PID 2000 wrote to memory of 2020	2000	cmd.exe	28
PID 1824 wrote to memory of 1732	1824	e_win.exe	32
PID 1824 wrote to memory of 1732	1824	e_win.exe	32
PID 1824 wrote to memory of 1732	1824	e_win.exe	32
PID 1824 wrote to memory of 1732	1824	e_win.exe	32
PID 1732 wrote to memory of 1244	1732	cmd.exe	35
PID 1732 wrote to memory of 1244	1732	cmd.exe	35
PID 1732 wrote to memory of 1244	1732	cmd.exe	35