babuk | c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24

General

Target

zasawuheb.exe
Size

308KB
MD5

75a6690d9a4a89bd0cf6ceebcffd3c41
SHA1

678ddaaaa14fcd7b90bfa2b673221378e032fdbf
SHA256

c94a81fdf688d220827320e88cc0b89af8690142abe5c602131b6659297c7d24
SHA512

37273a97459d3624e77c8b586acbed6836a88d9c4975625a654f55eccdabeb9d4dcd55598779ec7bfe3e682e725597468ef59fee9e18263a3a00c86bf962e526

Score

10^/10

babuk ransomware

Malware Config

Extracted

Path

C:\How To Restore Your Files.txt

Ransom Note

--------------- Hello --------------- *** By BABUCK LOCKER *** Your computers and servers are encrypted, and backups are deleted. We use strong encryption algorithms, so no one has yet been able to decrypt their files without our participation. The only way to decrypt your files is to purchase a universal decoder from us, which will restore all the encrypted data and your network. Follow our instructions below, and you will recover all your data: 1) Pay 0,006 bitcoin to 1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i 2) Send us message with transaction id to [email protected] 3) Launch decryptor.exe, which our support will send you through email What guarantees? ----------------------------------------------------- We value our reputation. If we will not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is tested by time and will decrypt all your data. ----------------------------------------------------- !!! DO NOT TRY TO RECOVER ANY FILES YOURSELF. WE WILL NOT BE ABLE TO RESTORE THEM!!!

Emails

[email protected]

Wallets

1E6cvG6iEbufvYspsDa3XQ3WJgEMvRTm9i

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 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ProtectNew.crw.babyk	zasawuheb.exe
File renamed	C:\Users\Admin\Pictures\StepCompare.png => C:\Users\Admin\Pictures\StepCompare.png.babyk	zasawuheb.exe
File opened for modification	C:\Users\Admin\Pictures\StepCompare.png.babyk	zasawuheb.exe
File renamed	C:\Users\Admin\Pictures\InitializeExport.raw => C:\Users\Admin\Pictures\InitializeExport.raw.babyk	zasawuheb.exe
File opened for modification	C:\Users\Admin\Pictures\InitializeExport.raw.babyk	zasawuheb.exe
File renamed	C:\Users\Admin\Pictures\ProtectNew.crw => C:\Users\Admin\Pictures\ProtectNew.crw.babyk	zasawuheb.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)	\??\P:	zasawuheb.exe
File opened (read-only)	\??\T:	zasawuheb.exe
File opened (read-only)	\??\U:	zasawuheb.exe
File opened (read-only)	\??\I:	zasawuheb.exe
File opened (read-only)	\??\O:	zasawuheb.exe
File opened (read-only)	\??\S:	zasawuheb.exe
File opened (read-only)	\??\G:	zasawuheb.exe
File opened (read-only)	\??\Q:	zasawuheb.exe
File opened (read-only)	\??\E:	zasawuheb.exe
File opened (read-only)	\??\J:	zasawuheb.exe
File opened (read-only)	\??\Z:	zasawuheb.exe
File opened (read-only)	\??\Y:	zasawuheb.exe
File opened (read-only)	\??\A:	zasawuheb.exe
File opened (read-only)	\??\H:	zasawuheb.exe
File opened (read-only)	\??\K:	zasawuheb.exe
File opened (read-only)	\??\L:	zasawuheb.exe
File opened (read-only)	\??\X:	zasawuheb.exe
File opened (read-only)	\??\W:	zasawuheb.exe
File opened (read-only)	\??\R:	zasawuheb.exe
File opened (read-only)	\??\M:	zasawuheb.exe
File opened (read-only)	\??\V:	zasawuheb.exe
File opened (read-only)	\??\B:	zasawuheb.exe
File opened (read-only)	\??\F:	zasawuheb.exe
File opened (read-only)	\??\N:	zasawuheb.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
316	vssadmin.exe
1584	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1360	zasawuheb.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	308	vssvc.exe
Token: SeRestorePrivilege	308	vssvc.exe
Token: SeAuditPrivilege	308	vssvc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1360 wrote to memory of 1248	1360	zasawuheb.exe	29
PID 1360 wrote to memory of 1248	1360	zasawuheb.exe	29
PID 1360 wrote to memory of 1248	1360	zasawuheb.exe	29
PID 1360 wrote to memory of 1248	1360	zasawuheb.exe	29
PID 1248 wrote to memory of 316	1248	cmd.exe	31
PID 1248 wrote to memory of 316	1248	cmd.exe	31
PID 1248 wrote to memory of 316	1248	cmd.exe	31
PID 1360 wrote to memory of 824	1360	zasawuheb.exe	35
PID 1360 wrote to memory of 824	1360	zasawuheb.exe	35
PID 1360 wrote to memory of 824	1360	zasawuheb.exe	35
PID 1360 wrote to memory of 824	1360	zasawuheb.exe	35
PID 824 wrote to memory of 1584	824	cmd.exe	37
PID 824 wrote to memory of 1584	824	cmd.exe	37
PID 824 wrote to memory of 1584	824	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe
"C:\Users\Admin\AppData\Local\Temp\zasawuheb.exe"
1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1360
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1248
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:316
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:824
- - C:\Windows\system32\vssadmin.exe
    vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1584

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

Replay Monitor

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Downloads

memory/1360-59-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download
memory/1360-62-0x00000000002B0000-0x00000000002C5000-memory.dmp

Filesize
84KB

Download
memory/1360-63-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download

Analysis

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