blackbasta | 96fdea105cf5bcf54071a6f6ff4395cc38f7dd923faf9736df4252b39926c8dd

General

Target

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.7z
Size

206KB
MD5

8e8e334ecaa9132f6e235c1e50d11e2b
SHA1

882d79d8d3f8461b45749a5ddec02d74af04e5ff
SHA256

96fdea105cf5bcf54071a6f6ff4395cc38f7dd923faf9736df4252b39926c8dd
SHA512

5a76c386d31c7c2fee5a86c2a75c1ed899e577635e19b0820814f15545997964a13d2e0a9d3888ebaa88a54419a8c88495e970b20fc53d0dcc48dacd1a7027fa
SSDEEP

6144:PNv7s6xrtx7M5ugBu7APAEMXRxO+4jKza:Z7s6F7AHBu0PAEMXRx50Kza

Score

10^/10

blackbasta defense_evasion discovery evasion execution impact ransomware

Malware Config

Signatures

Black Basta
A ransomware family targeting Windows and Linux ESXi first seen in February 2022.
ransomware blackbasta

Black Basta payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/files/0x0007000000023cb2-2.dat	family_blackbasta

Blackbasta family
blackbasta
Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047

Modifies boot configuration data using bcdedit 1 TTPs 1 IoCs

ransomware evasion

Inhibit System Recovery

T1490

Processes:

bcdedit.exe

pid	Process
1696	bcdedit.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:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

Executes dropped EXE 1 IoCs

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

pid	Process
3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.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-1-5-21-3350944739-639801879-157714471-1000\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

System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

cmd.execmd.execmd.exeshutdown.exe5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.execmd.execmd.execmd.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	shutdown.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Interacts with shadow copies 3 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

Processes:

vssadmin.exe

pid	Process
2664	vssadmin.exe

Modifies data under HKEY_USERS 15 IoCs

Processes:

LogonUI.exe

description	ioc	Process
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "59"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe

Modifies registry class 3 IoCs

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

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 behavior: GetForegroundWindowSpam 1 IoCs

Processes:

7zFM.exe

pid	Process
2348	7zFM.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

7zFM.exevssvc.exeshutdown.exe

description	pid	Process
Token: SeRestorePrivilege	2348	7zFM.exe
Token: 35	2348	7zFM.exe
Token: SeSecurityPrivilege	2348	7zFM.exe
Token: SeBackupPrivilege	1280	vssvc.exe
Token: SeRestorePrivilege	1280	vssvc.exe
Token: SeAuditPrivilege	1280	vssvc.exe
Token: SeShutdownPrivilege	2200	shutdown.exe
Token: SeRemoteShutdownPrivilege	2200	shutdown.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

7zFM.exe

pid	Process
2348	7zFM.exe
2348	7zFM.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LogonUI.exe

pid	Process
4492	LogonUI.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.execmd.execmd.execmd.exe

description	pid	Process	procid_target
PID 3952 wrote to memory of 2776	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	100
PID 3952 wrote to memory of 2776	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	100
PID 3952 wrote to memory of 2776	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	100
PID 2776 wrote to memory of 2664	2776	cmd.exe	104
PID 2776 wrote to memory of 2664	2776	cmd.exe	104
PID 3952 wrote to memory of 1704	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	108
PID 3952 wrote to memory of 1704	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	108
PID 3952 wrote to memory of 1704	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	108
PID 3952 wrote to memory of 4220	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	111
PID 3952 wrote to memory of 4220	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	111
PID 3952 wrote to memory of 4220	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	111
PID 3952 wrote to memory of 2916	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	113
PID 3952 wrote to memory of 2916	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	113
PID 3952 wrote to memory of 2916	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	113
PID 3952 wrote to memory of 4928	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	115
PID 3952 wrote to memory of 4928	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	115
PID 3952 wrote to memory of 4928	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	115
PID 4928 wrote to memory of 1696	4928	cmd.exe	117
PID 4928 wrote to memory of 1696	4928	cmd.exe	117
PID 3952 wrote to memory of 3880	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	118
PID 3952 wrote to memory of 3880	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	118
PID 3952 wrote to memory of 3880	3952	5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe	118
PID 3880 wrote to memory of 2200	3880	cmd.exe	120
PID 3880 wrote to memory of 2200	3880	cmd.exe	120
PID 3880 wrote to memory of 2200	3880	cmd.exe	120

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

C:\Program Files\7-Zip\7zFM.exe
"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.7z"
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2348

C:\Users\Admin\Desktop\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe
"C:\Users\Admin\Desktop\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe"
1⤵
- Checks computer location settings
- Executes dropped EXE
- Sets desktop wallpaper using registry
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2776
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2664
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1704
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /set safeboot network
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4220
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\System32\bcdedit.exe /set safeboot network
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Windows\SysNative\bcdedit.exe /set safeboot network
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4928
- - C:\Windows\system32\bcdedit.exe
    C:\Windows\SysNative\bcdedit.exe /set safeboot network
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1696
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C shutdown -r -f -t 0
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3880
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -f -t 0
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2200

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1280

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3929855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4492

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

Indicator Removal

2

T1070

File Deletion

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Defacement

1

T1491

Inhibit System Recovery

3

T1490

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Downloads

C:\Users\Admin\Desktop\5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa.exe

Filesize
563KB

MD5
3f400f30415941348af21d515a2fc6a3

SHA1
bd0bf9c987288ca434221d7d81c54a47e913600a

SHA256
5d2204f3a20e163120f52a2e3595db19890050b2faa96c6cba6b094b0a52b0aa

SHA512
0d4c3ee8807bbbf635ce2d1ce1b747c23cc2724ff999580169e5514c7c97109083bea169bd6a5f8be35f3b679bb8446839fcc7a38f78503658eda306bec69154

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads