blackbasta | ca0273c55507c3aae95539812c2c5d9bbdc80deb8e714360fe4bcc65d257aeb0

Analysis

max time kernel
6s
max time network
6s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26-03-2024 12:59

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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
T1070.004

Inhibit System Recovery
T1490
Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs
ransomware evasion

Inhibit System Recovery
T1490

Processes:

bcdedit.exe

pid process

1916 bcdedit.exe

pid	process
1916	bcdedit.exe

Sets desktop wallpaper using registry 2 TTPs 1 IoCs

ransomware

Defacement

T1491

Modify Registry

T1112

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\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
T1070.004

Inhibit System Recovery
T1490

Processes:

vssadmin.exevssadmin.exe

pid process

1748 vssadmin.exe
2744 vssadmin.exe

pid	process
1748	vssadmin.exe
2744	vssadmin.exe

Modifies registry class 3 IoCs

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

description	ioc	process
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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

vssvc.exeshutdown.exe

description	pid	process
Token: SeBackupPrivilege	2168	vssvc.exe
Token: SeRestorePrivilege	2168	vssvc.exe
Token: SeAuditPrivilege	2168	vssvc.exe
Token: SeShutdownPrivilege	2704	shutdown.exe
Token: SeRemoteShutdownPrivilege	2704	shutdown.exe

Suspicious use of WriteProcessMemory 40 IoCs

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.execmd.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2372 wrote to memory of 2688	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2688	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2688	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2688	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2688 wrote to memory of 1748	2688	cmd.exe	vssadmin.exe
PID 2688 wrote to memory of 1748	2688	cmd.exe	vssadmin.exe
PID 2688 wrote to memory of 1748	2688	cmd.exe	vssadmin.exe
PID 2688 wrote to memory of 1748	2688	cmd.exe	vssadmin.exe
PID 2372 wrote to memory of 2800	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2800	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2800	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2800	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2800 wrote to memory of 2744	2800	cmd.exe	vssadmin.exe
PID 2800 wrote to memory of 2744	2800	cmd.exe	vssadmin.exe
PID 2800 wrote to memory of 2744	2800	cmd.exe	vssadmin.exe
PID 2800 wrote to memory of 2744	2800	cmd.exe	vssadmin.exe
PID 2372 wrote to memory of 2496	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2496	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2496	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2496	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 864	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 864	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 864	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 864	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 952	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 952	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 952	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 952	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 952 wrote to memory of 1916	952	cmd.exe	bcdedit.exe
PID 952 wrote to memory of 1916	952	cmd.exe	bcdedit.exe
PID 952 wrote to memory of 1916	952	cmd.exe	bcdedit.exe
PID 952 wrote to memory of 1916	952	cmd.exe	bcdedit.exe
PID 2372 wrote to memory of 2348	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2348	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2348	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2372 wrote to memory of 2348	2372	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	cmd.exe
PID 2348 wrote to memory of 2704	2348	cmd.exe	shutdown.exe
PID 2348 wrote to memory of 2704	2348	cmd.exe	shutdown.exe
PID 2348 wrote to memory of 2704	2348	cmd.exe	shutdown.exe
PID 2348 wrote to memory of 2704	2348	cmd.exe	shutdown.exe

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:2372
- 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:2688
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:1748
- 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:2800
- - C:\Windows\SysWOW64\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2744
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /set safeboot network
  2⤵
  PID:2496
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\bcdedit.exe /set safeboot network
  2⤵
  PID:864
- 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:952
- - C:\Windows\system32\bcdedit.exe
    C:\Windows\SysNative\bcdedit.exe /set safeboot network
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1916
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C shutdown -r -f -t 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2348
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -f -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:2704

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2168

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:2812

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:2560

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

T1070

File Deletion

T1070.004

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/2560-6-0x0000000002AB0000-0x0000000002AB1000-memory.dmp

Filesize
4KB

Download
memory/2812-5-0x0000000002E90000-0x0000000002E91000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

Errors

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads