blackbasta | 5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa

Analysis

max time kernel
12s
max time network
12s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
21-05-2023 06:33

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Reason

Machine shutdown

Report Analysis Logs

General

Target

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
Size

563KB
MD5

3f400f30415941348af21d515a2fc6a3
SHA1

bd0bf9c987288ca434221d7d81c54a47e913600a
SHA256

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa
SHA512

0d4c3ee8807bbbf635ce2d1ce1b747c23cc2724ff999580169e5514c7c97109083bea169bd6a5f8be35f3b679bb8446839fcc7a38f78503658eda306bec69154
SSDEEP

12288:TFx0B/O7JxPzW9JPlHKtxYRkG7zLfpXE6SbJ:Rx7zW9JPlGskG1v

Score

10^/10

blackbasta evasion ransomware

Malware Config

Signatures

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware blackbasta
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1868	bcdedit.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3499517378-2376672570-1134980332-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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
1484	vssadmin.exe
1196	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeBackupPrivilege	268	vssvc.exe
Token: SeRestorePrivilege	268	vssvc.exe
Token: SeAuditPrivilege	268	vssvc.exe
Token: SeShutdownPrivilege	2024	shutdown.exe
Token: SeRemoteShutdownPrivilege	2024	shutdown.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 1344	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	29
PID 1708 wrote to memory of 1344	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	29
PID 1708 wrote to memory of 1344	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	29
PID 1708 wrote to memory of 1344	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	29
PID 1344 wrote to memory of 1484	1344	cmd.exe	31
PID 1344 wrote to memory of 1484	1344	cmd.exe	31
PID 1344 wrote to memory of 1484	1344	cmd.exe	31
PID 1344 wrote to memory of 1484	1344	cmd.exe	31
PID 1708 wrote to memory of 1588	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	34
PID 1708 wrote to memory of 1588	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	34
PID 1708 wrote to memory of 1588	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	34
PID 1708 wrote to memory of 1588	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	34
PID 1588 wrote to memory of 1196	1588	cmd.exe	36
PID 1588 wrote to memory of 1196	1588	cmd.exe	36
PID 1588 wrote to memory of 1196	1588	cmd.exe	36
PID 1588 wrote to memory of 1196	1588	cmd.exe	36
PID 1708 wrote to memory of 1632	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	38
PID 1708 wrote to memory of 1632	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	38
PID 1708 wrote to memory of 1632	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	38
PID 1708 wrote to memory of 1632	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	38
PID 1708 wrote to memory of 476	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	40
PID 1708 wrote to memory of 476	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	40
PID 1708 wrote to memory of 476	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	40
PID 1708 wrote to memory of 476	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	40
PID 1708 wrote to memory of 680	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	42
PID 1708 wrote to memory of 680	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	42
PID 1708 wrote to memory of 680	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	42
PID 1708 wrote to memory of 680	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	42
PID 680 wrote to memory of 1868	680	cmd.exe	44
PID 680 wrote to memory of 1868	680	cmd.exe	44
PID 680 wrote to memory of 1868	680	cmd.exe	44
PID 680 wrote to memory of 1868	680	cmd.exe	44
PID 1708 wrote to memory of 992	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	45
PID 1708 wrote to memory of 992	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	45
PID 1708 wrote to memory of 992	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	45
PID 1708 wrote to memory of 992	1708	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	45
PID 992 wrote to memory of 2024	992	cmd.exe	47
PID 992 wrote to memory of 2024	992	cmd.exe	47
PID 992 wrote to memory of 2024	992	cmd.exe	47
PID 992 wrote to memory of 2024	992	cmd.exe	47

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
"C:\Users\Admin\AppData\Local\Temp\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe"
1⤵
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1344
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1484
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1588
- - C:\Windows\SysWOW64\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1196
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /set safeboot network
  2⤵
  PID:1632
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\bcdedit.exe /set safeboot network
  2⤵
  PID:476
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\bcdedit.exe /set safeboot network
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:680
- - C:\Windows\system32\bcdedit.exe
    C:\Windows\SysNative\bcdedit.exe /set safeboot network
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C shutdown -r -f -t 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:992
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -f -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2024

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:268

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:1100

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:664

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

T1491

Inhibit System Recovery

T1490

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Downloads

memory/664-60-0x0000000002760000-0x0000000002761000-memory.dmp

Filesize
4KB

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memory/1100-59-0x00000000027C0000-0x00000000027C1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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