babuk | e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d

General

Target

e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
Size

79KB
MD5

1f6ea1848c050a59782b67d4516b03a3
SHA1

96d57e583a660c1ea47ba653eb3e3223e97269f7
SHA256

e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d
SHA512

360fde4b699068f35044cc05641072e4715ffea21c70e80f5bb1f90cd3aa1f3f0dd1224ffcc745bf68faec70e46c684a16a6c370facb4b77539a411e690ed54a
SSDEEP

1536:VikWBeG/vEbmsrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2nsf:EBeQsmsrQLOJgY8Zp8LHD4XWaNH71dLc

Score

10^/10

babuk ransomware

Malware Config

Signatures

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 10 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\GroupSet.tif => C:\Users\Admin\Pictures\GroupSet.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File renamed	C:\Users\Admin\Pictures\NewBlock.raw => C:\Users\Admin\Pictures\NewBlock.raw.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File renamed	C:\Users\Admin\Pictures\StepEnter.tif => C:\Users\Admin\Pictures\StepEnter.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened for modification	C:\Users\Admin\Pictures\StepEnter.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteCheckpoint.raw.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened for modification	C:\Users\Admin\Pictures\GroupSet.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened for modification	C:\Users\Admin\Pictures\NewBlock.raw.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File renamed	C:\Users\Admin\Pictures\ResetApprove.tif => C:\Users\Admin\Pictures\ResetApprove.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened for modification	C:\Users\Admin\Pictures\ResetApprove.tif.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File renamed	C:\Users\Admin\Pictures\CompleteCheckpoint.raw => C:\Users\Admin\Pictures\CompleteCheckpoint.raw.babyk	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.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

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\I:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\O:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\P:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\H:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\N:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\E:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\Y:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\L:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\A:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\J:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\F:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\Z:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\X:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\V:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\B:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\M:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\R:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\S:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\T:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\U:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\G:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\K:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\Q:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
File opened (read-only)	\??\W:	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.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

pid	Process
4952	vssadmin.exe
3736	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	824	vssvc.exe
Token: SeRestorePrivilege	824	vssvc.exe
Token: SeAuditPrivilege	824	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 4132	4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe	80
PID 4820 wrote to memory of 4132	4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe	80
PID 4132 wrote to memory of 4952	4132	cmd.exe	82
PID 4132 wrote to memory of 4952	4132	cmd.exe	82
PID 4820 wrote to memory of 4632	4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe	86
PID 4820 wrote to memory of 4632	4820	e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe	86
PID 4632 wrote to memory of 3736	4632	cmd.exe	88
PID 4632 wrote to memory of 3736	4632	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe
"C:\Users\Admin\AppData\Local\Temp\e7e3bc426f1133900f850fadf1d087086aa4bfd853b107dfa3526bb75f12c52d.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4820
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4132
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4952
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3736