babuk | 5339981168dfcefb874dc7e82563fa7aca047f17b1184ae8db9336a2335473a9

Analysis

max time kernel
182s
max time network
259s
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/0B/93/A0/0B93A024B5D6874D7BB69ABD7F0E2D54A67C602584575A9B6D1212BAAE81442F/0B93A.exe
Size

79KB
MD5

2245c35306910a280961d356e4b5ab94
SHA1

0ca5cc08a4f5226332d2ce49a9131216ac32bec2
SHA256

0b93a024b5d6874d7bb69abd7f0e2d54a67c602584575a9b6d1212baae81442f
SHA512

09342308aebf1f5bcf494904b00eba2df9faa75c1d884dd8f2e706e4429905244e269bedc28c71d692348a87a257a4b00b12aa79e9a9b7f7498a441a73344ac4
SSDEEP

1536:m6UhZM4hubesrQLOJgY8ZZP8LHD4XWaNH71dLdG1iiFM2iG2zs4:ghZ5YesrQLOJgY8Zp8LHD4XWaNH71dLI

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 13 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

0B93A.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\ResumeMount.tif.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\StepPop.png.babyk	0B93A.exe
File renamed	C:\Users\Admin\Pictures\UninstallExport.tif => C:\Users\Admin\Pictures\UninstallExport.tif.babyk	0B93A.exe
File renamed	C:\Users\Admin\Pictures\StepResolve.tiff => C:\Users\Admin\Pictures\StepResolve.tiff.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\StepResolve.tiff.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\SwitchClear.crw.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\StepResolve.tiff	0B93A.exe
File renamed	C:\Users\Admin\Pictures\ResumeMount.tif => C:\Users\Admin\Pictures\ResumeMount.tif.babyk	0B93A.exe
File renamed	C:\Users\Admin\Pictures\StepPop.png => C:\Users\Admin\Pictures\StepPop.png.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\UninstallExport.tif.babyk	0B93A.exe
File renamed	C:\Users\Admin\Pictures\SwitchClear.crw => C:\Users\Admin\Pictures\SwitchClear.crw.babyk	0B93A.exe
File renamed	C:\Users\Admin\Pictures\MeasureConvertFrom.tif => C:\Users\Admin\Pictures\MeasureConvertFrom.tif.babyk	0B93A.exe
File opened for modification	C:\Users\Admin\Pictures\MeasureConvertFrom.tif.babyk	0B93A.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:

0B93A.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation 0B93A.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	0B93A.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:

0B93A.exe

description	ioc	process
File opened (read-only)	\??\Y:	0B93A.exe
File opened (read-only)	\??\S:	0B93A.exe
File opened (read-only)	\??\K:	0B93A.exe
File opened (read-only)	\??\X:	0B93A.exe
File opened (read-only)	\??\Q:	0B93A.exe
File opened (read-only)	\??\E:	0B93A.exe
File opened (read-only)	\??\T:	0B93A.exe
File opened (read-only)	\??\V:	0B93A.exe
File opened (read-only)	\??\N:	0B93A.exe
File opened (read-only)	\??\M:	0B93A.exe
File opened (read-only)	\??\W:	0B93A.exe
File opened (read-only)	\??\I:	0B93A.exe
File opened (read-only)	\??\A:	0B93A.exe
File opened (read-only)	\??\B:	0B93A.exe
File opened (read-only)	\??\R:	0B93A.exe
File opened (read-only)	\??\O:	0B93A.exe
File opened (read-only)	\??\J:	0B93A.exe
File opened (read-only)	\??\G:	0B93A.exe
File opened (read-only)	\??\H:	0B93A.exe
File opened (read-only)	\??\L:	0B93A.exe
File opened (read-only)	\??\Z:	0B93A.exe
File opened (read-only)	\??\U:	0B93A.exe
File opened (read-only)	\??\P:	0B93A.exe
File opened (read-only)	\??\F:	0B93A.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

972 vssadmin.exe
5036 vssadmin.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

0B93A.exe

pid process

4604 0B93A.exe
4604 0B93A.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 4632 vssvc.exe
Token: SeRestorePrivilege 4632 vssvc.exe
Token: SeAuditPrivilege 4632 vssvc.exe

pid	process
972	vssadmin.exe
5036	vssadmin.exe

pid	process
4604	0B93A.exe
4604	0B93A.exe

description	pid	process
Token: SeBackupPrivilege	4632	vssvc.exe
Token: SeRestorePrivilege	4632	vssvc.exe
Token: SeAuditPrivilege	4632	vssvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

0B93A.execmd.execmd.exe

description	pid	process	target process
PID 4604 wrote to memory of 4764	4604	0B93A.exe	cmd.exe
PID 4604 wrote to memory of 4764	4604	0B93A.exe	cmd.exe
PID 4764 wrote to memory of 972	4764	cmd.exe	vssadmin.exe
PID 4764 wrote to memory of 972	4764	cmd.exe	vssadmin.exe
PID 4604 wrote to memory of 3668	4604	0B93A.exe	cmd.exe
PID 4604 wrote to memory of 3668	4604	0B93A.exe	cmd.exe
PID 3668 wrote to memory of 5036	3668	cmd.exe	vssadmin.exe
PID 3668 wrote to memory of 5036	3668	cmd.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\0B\93\A0\0B93A024B5D6874D7BB69ABD7F0E2D54A67C602584575A9B6D1212BAAE81442F\0B93A.exe
"C:\Users\Admin\AppData\Local\Temp\exe.ransomware.babuk\0B\93\A0\0B93A024B5D6874D7BB69ABD7F0E2D54A67C602584575A9B6D1212BAAE81442F\0B93A.exe"
1⤵
- Modifies extensions of user files
- Checks computer location settings
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4604
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4764
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:972
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3668
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:5036

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4632

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/972-133-0x0000000000000000-mapping.dmp

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memory/3668-134-0x0000000000000000-mapping.dmp

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memory/4764-132-0x0000000000000000-mapping.dmp

Download
memory/5036-135-0x0000000000000000-mapping.dmp

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