babuk | a32770d46ee2ee5b91cc36e5159868ec3ff7f847e7516d7bcb952f7a94e347a2

Analysis

max time kernel
94s
max time network
120s
platform
windows7_x64
resource
win7v20210408
submitted
27-08-2021 04:19

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General

Target

5665f108965c55a2d3ebcbbb50b03786.exe
Size

107KB
MD5

5665f108965c55a2d3ebcbbb50b03786
SHA1

5f3500c5d5f646383e06033fb0650d9b83da98a8
SHA256

a32770d46ee2ee5b91cc36e5159868ec3ff7f847e7516d7bcb952f7a94e347a2
SHA512

cb6e052712ace47f371efdc93309ecc3bc7e85d897dc64e85c8fac3e436a3a714ffd140d465daf87a3f911f89bfbf4db90fe1bd7f579f5d108de51ace342b0fb

Score

10^/10

babuk discovery ransomware spyware stealer

Malware Config

Extracted

Path

C:\How To Restore Your Files.txt

Ransom Note

Hi, friend. Your files are encrypted. And you can't do anything with them. If you want to restore them, contact us via telegram @username312321 Price - 350 $ You can pay with BTC - bc1qd53hpk76zutapw8tsgnnkeuuuhuk4ecr2wrd93

Wallets

bc1qd53hpk76zutapw8tsgnnkeuuuhuk4ecr2wrd93

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
Downloads MZ/PE file

Executes dropped EXE 2 IoCs

pid	Process
1360	AudioB.exe
748	AudioB.exe

Modifies extensions of user files 21 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\EnableRemove.raw.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\SkipAdd.tiff.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\DenyCheckpoint.raw => C:\Users\Admin\Pictures\DenyCheckpoint.raw.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\EnableRemove.raw => C:\Users\Admin\Pictures\EnableRemove.raw.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\EditConvertTo.tiff => C:\Users\Admin\Pictures\EditConvertTo.tiff.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\ConvertFromFind.tif.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\DenyCheckpoint.raw.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\EditConvertTo.tiff.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\ReadMount.png.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\SkipAdd.tiff	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\ApproveUse.tiff.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\EditConvertTo.tiff	AudioB.exe
File renamed	C:\Users\Admin\Pictures\ConvertFromFind.tif => C:\Users\Admin\Pictures\ConvertFromFind.tif.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\ReadSuspend.png => C:\Users\Admin\Pictures\ReadSuspend.png.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\SkipAdd.tiff => C:\Users\Admin\Pictures\SkipAdd.tiff.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\SubmitConnect.crw => C:\Users\Admin\Pictures\SubmitConnect.crw.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\SubmitConnect.crw.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\ApproveUse.tiff	AudioB.exe
File renamed	C:\Users\Admin\Pictures\ApproveUse.tiff => C:\Users\Admin\Pictures\ApproveUse.tiff.babyk	AudioB.exe
File renamed	C:\Users\Admin\Pictures\ReadMount.png => C:\Users\Admin\Pictures\ReadMount.png.babyk	AudioB.exe
File opened for modification	C:\Users\Admin\Pictures\ReadSuspend.png.babyk	AudioB.exe

Loads dropped DLL 2 IoCs

pid	Process
1832	5665f108965c55a2d3ebcbbb50b03786.exe
1360	AudioB.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1360 set thread context of 748	1360	AudioB.exe	32

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
2028	vssadmin.exe
524	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1832	5665f108965c55a2d3ebcbbb50b03786.exe
748	AudioB.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1832	5665f108965c55a2d3ebcbbb50b03786.exe
Token: SeDebugPrivilege	1360	AudioB.exe
Token: SeBackupPrivilege	1928	vssvc.exe
Token: SeRestorePrivilege	1928	vssvc.exe
Token: SeAuditPrivilege	1928	vssvc.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1832 wrote to memory of 1360	1832	5665f108965c55a2d3ebcbbb50b03786.exe	31
PID 1832 wrote to memory of 1360	1832	5665f108965c55a2d3ebcbbb50b03786.exe	31
PID 1832 wrote to memory of 1360	1832	5665f108965c55a2d3ebcbbb50b03786.exe	31
PID 1832 wrote to memory of 1360	1832	5665f108965c55a2d3ebcbbb50b03786.exe	31
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 1360 wrote to memory of 748	1360	AudioB.exe	32
PID 748 wrote to memory of 828	748	AudioB.exe	33
PID 748 wrote to memory of 828	748	AudioB.exe	33
PID 748 wrote to memory of 828	748	AudioB.exe	33
PID 748 wrote to memory of 828	748	AudioB.exe	33
PID 828 wrote to memory of 2028	828	cmd.exe	35
PID 828 wrote to memory of 2028	828	cmd.exe	35
PID 828 wrote to memory of 2028	828	cmd.exe	35
PID 748 wrote to memory of 1060	748	AudioB.exe	39
PID 748 wrote to memory of 1060	748	AudioB.exe	39
PID 748 wrote to memory of 1060	748	AudioB.exe	39
PID 748 wrote to memory of 1060	748	AudioB.exe	39
PID 1060 wrote to memory of 524	1060	cmd.exe	41
PID 1060 wrote to memory of 524	1060	cmd.exe	41
PID 1060 wrote to memory of 524	1060	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe
"C:\Users\Admin\AppData\Local\Temp\5665f108965c55a2d3ebcbbb50b03786.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1832
- C:\Users\Admin\AppData\Local\Temp\AudioB.exe
  "C:\Users\Admin\AppData\Local\Temp\AudioB.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1360
- - C:\Users\Admin\AppData\Local\Temp\AudioB.exe
    "C:\Users\Admin\AppData\Local\Temp\AudioB.exe"
    3⤵
    - Executes dropped EXE
    - Modifies extensions of user files
    - Enumerates connected drives
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:748
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      4⤵
      Suspicious use of WriteProcessMemory
      PID:828
    - - C:\Windows\system32\vssadmin.exe
        
        vssadmin.exe delete shadows /all /quiet
        5⤵
        Interacts with shadow copies
        
        PID:2028
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1060
    - - C:\Windows\system32\vssadmin.exe
        
        vssadmin.exe delete shadows /all /quiet
        5⤵
        Interacts with shadow copies
        
        PID:524

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Credentials in Files

T1081

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/748-80-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/748-76-0x0000000000400000-0x0000000000418000-memory.dmp

Filesize
96KB

Download
memory/748-79-0x0000000075801000-0x0000000075803000-memory.dmp

Filesize
8KB

Download
memory/1360-73-0x0000000008260000-0x00000000082FC000-memory.dmp

Filesize
624KB

Download
memory/1360-67-0x0000000000010000-0x0000000000011000-memory.dmp

Filesize
4KB

Download
memory/1360-74-0x0000000001FB0000-0x0000000001FE1000-memory.dmp

Filesize
196KB

Download
memory/1360-69-0x0000000004D70000-0x0000000004D71000-memory.dmp

Filesize
4KB

Download
memory/1360-72-0x0000000001E20000-0x0000000001E31000-memory.dmp

Filesize
68KB

Download
memory/1360-71-0x0000000004D71000-0x0000000004D72000-memory.dmp

Filesize
4KB

Download
memory/1360-70-0x0000000000340000-0x0000000000341000-memory.dmp

Filesize
4KB

Download
memory/1832-60-0x0000000000C70000-0x0000000000C71000-memory.dmp

Filesize
4KB

Download
memory/1832-62-0x0000000004810000-0x0000000004811000-memory.dmp

Filesize
4KB

Download