babuk | 5339981168dfcefb874dc7e82563fa7aca047f17b1184ae8db9336a2335473a9

Analysis

max time kernel
191s
max time network
282s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01-12-2022 05:59

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General

Target

exe.ransomware.babuk/0C/55/C4/0C55C4FB23178948E0DF495158B290CCE676BC93C5927E8EA57D93B3128972F5/0C55C.exe
Size

79KB
MD5

a55fa9c010416b233a1f8e63b658ecbc
SHA1

75a580aa9cc3f4901e229843411f6e2669256525
SHA256

0c55c4fb23178948e0df495158b290cce676bc93c5927e8ea57d93b3128972f5
SHA512

71889ebe24f6836c08db83f36f54dc53b4ef8d2d3f31a1e42e68e40eb74f6ffaa4456a3876a4dd2f7da9e4783c41c768f964d50c8da0d96748fe06257d07dacf
SSDEEP

1536:n6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:bhZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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 20 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

0C55C.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\StepMeasure.tiff.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\UnlockWrite.png.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromApprove.tiff	0C55C.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromApprove.tiff => C:\Users\Admin\Pictures\ConvertFromApprove.tiff.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromApprove.tiff.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\FindBlock.crw.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\FormatRemove.tif => C:\Users\Admin\Pictures\FormatRemove.tif.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\UnlockWrite.png => C:\Users\Admin\Pictures\UnlockWrite.png.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmRename.png.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\FindBlock.crw => C:\Users\Admin\Pictures\FindBlock.crw.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\FormatRemove.tif.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\SubmitConvert.raw => C:\Users\Admin\Pictures\SubmitConvert.raw.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitConvert.raw.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\ConfirmRename.png => C:\Users\Admin\Pictures\ConfirmRename.png.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\MoveReset.png.babyk	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\StepMeasure.tiff	0C55C.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveCompare.raw.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\MoveReset.png => C:\Users\Admin\Pictures\MoveReset.png.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\ResolveCompare.raw => C:\Users\Admin\Pictures\ResolveCompare.raw.babyk	0C55C.exe
File renamed	C:\Users\Admin\Pictures\StepMeasure.tiff => C:\Users\Admin\Pictures\StepMeasure.tiff.babyk	0C55C.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:

0C55C.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation 0C55C.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	0C55C.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:

0C55C.exe

description	ioc	process
File opened (read-only)	\??\X:	0C55C.exe
File opened (read-only)	\??\Q:	0C55C.exe
File opened (read-only)	\??\E:	0C55C.exe
File opened (read-only)	\??\U:	0C55C.exe
File opened (read-only)	\??\P:	0C55C.exe
File opened (read-only)	\??\S:	0C55C.exe
File opened (read-only)	\??\K:	0C55C.exe
File opened (read-only)	\??\Z:	0C55C.exe
File opened (read-only)	\??\M:	0C55C.exe
File opened (read-only)	\??\T:	0C55C.exe
File opened (read-only)	\??\Y:	0C55C.exe
File opened (read-only)	\??\I:	0C55C.exe
File opened (read-only)	\??\H:	0C55C.exe
File opened (read-only)	\??\B:	0C55C.exe
File opened (read-only)	\??\N:	0C55C.exe
File opened (read-only)	\??\A:	0C55C.exe
File opened (read-only)	\??\F:	0C55C.exe
File opened (read-only)	\??\G:	0C55C.exe
File opened (read-only)	\??\J:	0C55C.exe
File opened (read-only)	\??\V:	0C55C.exe
File opened (read-only)	\??\W:	0C55C.exe
File opened (read-only)	\??\R:	0C55C.exe
File opened (read-only)	\??\O:	0C55C.exe
File opened (read-only)	\??\L:	0C55C.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

3888 vssadmin.exe
4012 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

0C55C.exe

pid process

1220 0C55C.exe
1220 0C55C.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3336 vssvc.exe
Token: SeRestorePrivilege 3336 vssvc.exe
Token: SeAuditPrivilege 3336 vssvc.exe

pid	process
3888	vssadmin.exe
4012	vssadmin.exe

pid	process
1220	0C55C.exe
1220	0C55C.exe

description	pid	process
Token: SeBackupPrivilege	3336	vssvc.exe
Token: SeRestorePrivilege	3336	vssvc.exe
Token: SeAuditPrivilege	3336	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

0C55C.execmd.execmd.exe

description	pid	process	target process
PID 1220 wrote to memory of 3100	1220	0C55C.exe	cmd.exe
PID 1220 wrote to memory of 3100	1220	0C55C.exe	cmd.exe
PID 3100 wrote to memory of 3888	3100	cmd.exe	vssadmin.exe
PID 3100 wrote to memory of 3888	3100	cmd.exe	vssadmin.exe
PID 1220 wrote to memory of 4304	1220	0C55C.exe	cmd.exe
PID 1220 wrote to memory of 4304	1220	0C55C.exe	cmd.exe
PID 4304 wrote to memory of 4012	4304	cmd.exe	vssadmin.exe
PID 4304 wrote to memory of 4012	4304	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\0C\55\C4\0C55C4FB23178948E0DF495158B290CCE676BC93C5927E8EA57D93B3128972F5\0C55C.exe
"C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\0C\55\C4\0C55C4FB23178948E0DF495158B290CCE676BC93C5927E8EA57D93B3128972F5\0C55C.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3100
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:3888
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4304
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4012

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3336

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/3100-132-0x0000000000000000-mapping.dmp

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memory/3888-133-0x0000000000000000-mapping.dmp

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memory/4012-135-0x0000000000000000-mapping.dmp

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memory/4304-134-0x0000000000000000-mapping.dmp

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