blackbasta | 699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76

Analysis

max time kernel
157s
max time network
173s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
30/11/2022, 22:33

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General

Target

699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe
Size

555KB
MD5

6d5b9675b68bac95b885b4bb294134a1
SHA1

74dbf463be3139a28d9851b3b80c2ecac3e56304
SHA256

699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76
SHA512

5bc03425855057dd1f7cd9d5b61c3c895eb1ac48401aa4bd807e56560b149aefe1d9f2c7c73225f0e705923e5e2dd2d65490e1ba668dc788852ebc51f63bbe00
SSDEEP

12288:SW0nwOZKGC9FGKRTyBQPqPgrSrMGu4fGxzWjQ9dGB3K4d:ShwVGKR+BQPqPgKM2GxzMyGhK4

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
2028	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-1-5-21-999675638-2867687379-27515722-1000\Control Panel\Desktop\Wallpaper = "C:\\Users\\Admin\\AppData\\Local\\Temp\\dlaksjdoiwq.jpg"	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.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
560	vssadmin.exe
940	vssadmin.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.basta\DefaultIcon\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\fkdjsadasd.ico"	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeBackupPrivilege	904	vssvc.exe
Token: SeRestorePrivilege	904	vssvc.exe
Token: SeAuditPrivilege	904	vssvc.exe
Token: SeShutdownPrivilege	1624	shutdown.exe
Token: SeRemoteShutdownPrivilege	1624	shutdown.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 1984 wrote to memory of 1572	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	27
PID 1984 wrote to memory of 1572	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	27
PID 1984 wrote to memory of 1572	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	27
PID 1984 wrote to memory of 1572	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	27
PID 1572 wrote to memory of 940	1572	cmd.exe	29
PID 1572 wrote to memory of 940	1572	cmd.exe	29
PID 1572 wrote to memory of 940	1572	cmd.exe	29
PID 1572 wrote to memory of 940	1572	cmd.exe	29
PID 1984 wrote to memory of 1716	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	32
PID 1984 wrote to memory of 1716	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	32
PID 1984 wrote to memory of 1716	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	32
PID 1984 wrote to memory of 1716	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	32
PID 1716 wrote to memory of 560	1716	cmd.exe	34
PID 1716 wrote to memory of 560	1716	cmd.exe	34
PID 1716 wrote to memory of 560	1716	cmd.exe	34
PID 1716 wrote to memory of 560	1716	cmd.exe	34
PID 1984 wrote to memory of 2028	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	36
PID 1984 wrote to memory of 2028	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	36
PID 1984 wrote to memory of 2028	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	36
PID 1984 wrote to memory of 2028	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	36
PID 1984 wrote to memory of 2008	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	38
PID 1984 wrote to memory of 2008	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	38
PID 1984 wrote to memory of 2008	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	38
PID 1984 wrote to memory of 2008	1984	699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe	38
PID 2008 wrote to memory of 1624	2008	cmd.exe	40
PID 2008 wrote to memory of 1624	2008	cmd.exe	40
PID 2008 wrote to memory of 1624	2008	cmd.exe	40
PID 2008 wrote to memory of 1624	2008	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe
"C:\Users\Admin\AppData\Local\Temp\699aaea1598a034cde7ed88cd8a8a36fd59447e09bddef566357061774c48a76.exe"
1⤵
- Sets desktop wallpaper using registry
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1984
- 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:1572
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\SysNative\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:940
- 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:1716
- - C:\Windows\SysWOW64\vssadmin.exe
    C:\Windows\System32\vssadmin.exe delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:560
- C:\Windows\system32\bcdedit.exe
  C:\Windows\SysNative\bcdedit.exe /set safeboot network
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:2028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C shutdown -r -f -t 0
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\SysWOW64\shutdown.exe
    shutdown -r -f -t 0
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    PID:1624

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:904

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:1104

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x1
1⤵
PID:1728

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/1104-62-0x000007FEFBC61000-0x000007FEFBC63000-memory.dmp

Filesize
8KB

Download
memory/1984-54-0x0000000075041000-0x0000000075043000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads