babuk | 1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90

General

Target

DefinitivKeineMalware.exe
Size

79KB
MD5

92832ae49373b56748817cb5398ed706
SHA1

61e4505d605882b809d9c7f3dcbf163ff1678382
SHA256

1e24560100d010c27cc19c59f9fe1531e4286ecb21fe53763165f30c5f58dc90
SHA512

398ef0e5ffb6f914a2d1df23f12561153ef52ea28d345232cbb2daa84c43d1f1934be0c40d00b2502c2437c2733d0cdf75d24be6a8b47fc69648ad16c0bb4858

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 21 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

DefinitivKeineMalware.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\ExportStep.tiff.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\RequestMeasure.png.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmSend.tiff	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\ExportStep.tiff	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\LockDismount.tiff => C:\Users\Admin\Pictures\LockDismount.tiff.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\UndoCheckpoint.png.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\UnregisterSelect.png => C:\Users\Admin\Pictures\UnregisterSelect.png.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\ConfirmSend.tiff => C:\Users\Admin\Pictures\ConfirmSend.tiff.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmSend.tiff.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\ResumeSync.tif => C:\Users\Admin\Pictures\ResumeSync.tif.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeSync.tif.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\UndoCheckpoint.png => C:\Users\Admin\Pictures\UndoCheckpoint.png.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\UnregisterSelect.png.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\UndoSet.png.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\LockDismount.tiff.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\RequestMeasure.png => C:\Users\Admin\Pictures\RequestMeasure.png.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\LockDismount.tiff	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\ExportStep.tiff => C:\Users\Admin\Pictures\ExportStep.tiff.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\UndoSet.png => C:\Users\Admin\Pictures\UndoSet.png.babyk	DefinitivKeineMalware.exe
File renamed	C:\Users\Admin\Pictures\CompleteHide.raw => C:\Users\Admin\Pictures\CompleteHide.raw.babyk	DefinitivKeineMalware.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteHide.raw.babyk	DefinitivKeineMalware.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

Processes:

DefinitivKeineMalware.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	DefinitivKeineMalware.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

Processes:

DefinitivKeineMalware.exe

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

Drops file in Windows directory 8 IoCs

Processes:

TiWorker.exesvchost.exe

description	ioc	process
File opened for modification	C:\Windows\WinSxS\pending.xml	TiWorker.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\Logs\CBS\CBS.log	TiWorker.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

3148 vssadmin.exe
3812 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

DefinitivKeineMalware.exe

pid process

3328 DefinitivKeineMalware.exe
3328 DefinitivKeineMalware.exe

pid	process
3148	vssadmin.exe
3812	vssadmin.exe

pid	process
3328	DefinitivKeineMalware.exe
3328	DefinitivKeineMalware.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

vssvc.exesvchost.exeTiWorker.exe

description	pid	process
Token: SeBackupPrivilege	5064	vssvc.exe
Token: SeRestorePrivilege	5064	vssvc.exe
Token: SeAuditPrivilege	5064	vssvc.exe
Token: SeShutdownPrivilege	1000	svchost.exe
Token: SeCreatePagefilePrivilege	1000	svchost.exe
Token: SeShutdownPrivilege	1000	svchost.exe
Token: SeCreatePagefilePrivilege	1000	svchost.exe
Token: SeShutdownPrivilege	1000	svchost.exe
Token: SeCreatePagefilePrivilege	1000	svchost.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe
Token: SeRestorePrivilege	3416	TiWorker.exe
Token: SeSecurityPrivilege	3416	TiWorker.exe
Token: SeBackupPrivilege	3416	TiWorker.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

DefinitivKeineMalware.execmd.execmd.exe

description	pid	process	target process
PID 3328 wrote to memory of 4868	3328	DefinitivKeineMalware.exe	cmd.exe
PID 3328 wrote to memory of 4868	3328	DefinitivKeineMalware.exe	cmd.exe
PID 4868 wrote to memory of 3148	4868	cmd.exe	vssadmin.exe
PID 4868 wrote to memory of 3148	4868	cmd.exe	vssadmin.exe
PID 3328 wrote to memory of 4636	3328	DefinitivKeineMalware.exe	cmd.exe
PID 3328 wrote to memory of 4636	3328	DefinitivKeineMalware.exe	cmd.exe
PID 4636 wrote to memory of 3812	4636	cmd.exe	vssadmin.exe
PID 4636 wrote to memory of 3812	4636	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\DefinitivKeineMalware.exe
"C:\Users\Admin\AppData\Local\Temp\DefinitivKeineMalware.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:3328

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:4868

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:3148

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
2⤵
- Suspicious use of WriteProcessMemory
PID:4636

C:\Windows\system32\vssadmin.exe
vssadmin.exe delete shadows /all /quiet
3⤵
- Interacts with shadow copies
PID:3812

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5064

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1000

C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe
C:\Windows\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_10.0.19041.1220_none_7e21bc567c7ed16b\TiWorker.exe -Embedding
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:3416

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

Peripheral Device Discovery

1

T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

memory/1000-130-0x00000198AA120000-0x00000198AA130000-memory.dmp

Filesize
64KB

Download
memory/1000-131-0x00000198AA180000-0x00000198AA190000-memory.dmp

Filesize
64KB

Download
memory/1000-132-0x00000198AC840000-0x00000198AC844000-memory.dmp

Filesize
16KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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