babuk | 5339981168dfcefb874dc7e82563fa7aca047f17b1184ae8db9336a2335473a9

Analysis

max time kernel
103s
max time network
186s
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/05/AD/C9/05ADC97ABE6349C6132AA4AB44006B51945225A1EC764C87B781D5044A4E176F/05ADC.exe
Size

79KB
MD5

71c3b5e49e75e1d593b81bdc9cca7507
SHA1

911bc4790b653276e946a05bce4bb583192c61dd
SHA256

05adc97abe6349c6132aa4ab44006b51945225a1ec764c87b781d5044a4e176f
SHA512

e954e1e30075f378f4c87f1f29b0aadb908b08cec81cf671df552d56a21387abb31a07843c8786f63cb1797f983db7c9b18a8d82cd68051305c972bb81b34736
SSDEEP

1536:R6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:9hZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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

Processes:

05ADC.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\CompleteCheckpoint.raw => C:\Users\Admin\Pictures\CompleteCheckpoint.raw.babyk	05ADC.exe
File renamed	C:\Users\Admin\Pictures\GroupSet.tif => C:\Users\Admin\Pictures\GroupSet.tif.babyk	05ADC.exe
File opened for modification	C:\Users\Admin\Pictures\GroupSet.tif.babyk	05ADC.exe
File renamed	C:\Users\Admin\Pictures\NewBlock.raw => C:\Users\Admin\Pictures\NewBlock.raw.babyk	05ADC.exe
File renamed	C:\Users\Admin\Pictures\ResetApprove.tif => C:\Users\Admin\Pictures\ResetApprove.tif.babyk	05ADC.exe
File opened for modification	C:\Users\Admin\Pictures\StepEnter.tif.babyk	05ADC.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteCheckpoint.raw.babyk	05ADC.exe
File opened for modification	C:\Users\Admin\Pictures\NewBlock.raw.babyk	05ADC.exe
File opened for modification	C:\Users\Admin\Pictures\ResetApprove.tif.babyk	05ADC.exe
File renamed	C:\Users\Admin\Pictures\StepEnter.tif => C:\Users\Admin\Pictures\StepEnter.tif.babyk	05ADC.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:

05ADC.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 05ADC.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	05ADC.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:

05ADC.exe

description	ioc	process
File opened (read-only)	\??\Q:	05ADC.exe
File opened (read-only)	\??\E:	05ADC.exe
File opened (read-only)	\??\T:	05ADC.exe
File opened (read-only)	\??\Y:	05ADC.exe
File opened (read-only)	\??\U:	05ADC.exe
File opened (read-only)	\??\F:	05ADC.exe
File opened (read-only)	\??\X:	05ADC.exe
File opened (read-only)	\??\V:	05ADC.exe
File opened (read-only)	\??\O:	05ADC.exe
File opened (read-only)	\??\G:	05ADC.exe
File opened (read-only)	\??\J:	05ADC.exe
File opened (read-only)	\??\L:	05ADC.exe
File opened (read-only)	\??\Z:	05ADC.exe
File opened (read-only)	\??\B:	05ADC.exe
File opened (read-only)	\??\M:	05ADC.exe
File opened (read-only)	\??\R:	05ADC.exe
File opened (read-only)	\??\I:	05ADC.exe
File opened (read-only)	\??\P:	05ADC.exe
File opened (read-only)	\??\S:	05ADC.exe
File opened (read-only)	\??\H:	05ADC.exe
File opened (read-only)	\??\K:	05ADC.exe
File opened (read-only)	\??\W:	05ADC.exe
File opened (read-only)	\??\A:	05ADC.exe
File opened (read-only)	\??\N:	05ADC.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

4756 vssadmin.exe
1772 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

05ADC.exe

pid process

2104 05ADC.exe
2104 05ADC.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1328 vssvc.exe
Token: SeRestorePrivilege 1328 vssvc.exe
Token: SeAuditPrivilege 1328 vssvc.exe

pid	process
4756	vssadmin.exe
1772	vssadmin.exe

pid	process
2104	05ADC.exe
2104	05ADC.exe

description	pid	process
Token: SeBackupPrivilege	1328	vssvc.exe
Token: SeRestorePrivilege	1328	vssvc.exe
Token: SeAuditPrivilege	1328	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

05ADC.execmd.execmd.exe

description	pid	process	target process
PID 2104 wrote to memory of 1516	2104	05ADC.exe	cmd.exe
PID 2104 wrote to memory of 1516	2104	05ADC.exe	cmd.exe
PID 1516 wrote to memory of 1772	1516	cmd.exe	vssadmin.exe
PID 1516 wrote to memory of 1772	1516	cmd.exe	vssadmin.exe
PID 2104 wrote to memory of 1304	2104	05ADC.exe	cmd.exe
PID 2104 wrote to memory of 1304	2104	05ADC.exe	cmd.exe
PID 1304 wrote to memory of 4756	1304	cmd.exe	vssadmin.exe
PID 1304 wrote to memory of 4756	1304	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\05\AD\C9\05ADC97ABE6349C6132AA4AB44006B51945225A1EC764C87B781D5044A4E176F\05ADC.exe
"C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\05\AD\C9\05ADC97ABE6349C6132AA4AB44006B51945225A1EC764C87B781D5044A4E176F\05ADC.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2104
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1772
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1304
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:4756

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1328

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/1304-134-0x0000000000000000-mapping.dmp

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memory/1516-132-0x0000000000000000-mapping.dmp

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memory/1772-133-0x0000000000000000-mapping.dmp

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memory/4756-135-0x0000000000000000-mapping.dmp

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