babuk | ea95f131bd9b49104d9e7ae83335254549ded9d71d557c6e4746740aecca2c85

General

Target

e_win.bin.exe
Size

79KB
MD5

e5adc80639046a5c69bcfeee458e0833
SHA1

d9e3f9edda5df290b5be6fb1d335b750dd7c6758
SHA256

ea95f131bd9b49104d9e7ae83335254549ded9d71d557c6e4746740aecca2c85
SHA512

c11a24e14ba5fa2b0e2c2b544dd4218ce4c8caae3db7cebd5b0305223f96bde09c9bd237cb8d32768f30118f7be73240971e772f7a89db7c0fba5c6105107e3a

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 8 IoCs

Ransomware generally changes the extension on encrypted files.

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\MergeShow.tif.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\SplitInstall.crw => C:\Users\Admin\Pictures\SplitInstall.crw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\SplitInstall.crw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromExport.raw => C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromExport.raw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\FormatHide.raw => C:\Users\Admin\Pictures\FormatHide.raw.babyk	e_win.bin.exe
File opened for modification	C:\Users\Admin\Pictures\FormatHide.raw.babyk	e_win.bin.exe
File renamed	C:\Users\Admin\Pictures\MergeShow.tif => C:\Users\Admin\Pictures\MergeShow.tif.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

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
1772	vssadmin.exe
996	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2016	e_win.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2016 wrote to memory of 1648	2016	e_win.bin.exe	29
PID 2016 wrote to memory of 1648	2016	e_win.bin.exe	29
PID 2016 wrote to memory of 1648	2016	e_win.bin.exe	29
PID 2016 wrote to memory of 1648	2016	e_win.bin.exe	29
PID 1648 wrote to memory of 1772	1648	cmd.exe	31
PID 1648 wrote to memory of 1772	1648	cmd.exe	31
PID 1648 wrote to memory of 1772	1648	cmd.exe	31
PID 2016 wrote to memory of 1104	2016	e_win.bin.exe	35
PID 2016 wrote to memory of 1104	2016	e_win.bin.exe	35
PID 2016 wrote to memory of 1104	2016	e_win.bin.exe	35
PID 2016 wrote to memory of 1104	2016	e_win.bin.exe	35
PID 1104 wrote to memory of 996	1104	cmd.exe	37
PID 1104 wrote to memory of 996	1104	cmd.exe	37
PID 1104 wrote to memory of 996	1104	cmd.exe	37