bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8

General

Target

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
Size

60KB
MD5

0ed2ca539a01cdb86c88a9a1604b2005
SHA1

4fed7eae00bfa21938e49f33b7c6794fd7d0750c
SHA256

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8
SHA512

34dad101cd7c5f9ff2267674d224986b9274e0e17d9ae665ca1af4ffa57408106238b1e248045465ab17c72a4b92473ab3714aefb705d95f9725a4251379c7e2

Score

9^/10

persistence discovery exploit ransomware

Malware Config

Signatures

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 740 vssvc.exe
Token: SeRestorePrivilege 740 vssvc.exe
Token: SeAuditPrivilege 740 vssvc.exe

description	pid	process
Token: SeBackupPrivilege	740	vssvc.exe
Token: SeRestorePrivilege	740	vssvc.exe
Token: SeAuditPrivilege	740	vssvc.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

vssvc.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5}	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer	vssvc.exe

Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1804 takeown.exe
1356 icacls.exe
Possible privilege escalation attempt 2 IoCs
exploit

Processes:

icacls.exetakeown.exe

pid process

1356 icacls.exe
1804 takeown.exe

pid	process
1804	takeown.exe
1356	icacls.exe

pid	process
1356	icacls.exe
1804	takeown.exe

Loads dropped DLL 2 IoCs

Processes:

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

pid	process
1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exeMpdev:binMpdev.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	Mpdev:bin
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	Mpdev:bin
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	Mpdev:bin
PID 1456 wrote to memory of 1484	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	Mpdev:bin
PID 1484 wrote to memory of 284	1484	Mpdev:bin	vssadmin.exe
PID 1484 wrote to memory of 284	1484	Mpdev:bin	vssadmin.exe
PID 1484 wrote to memory of 284	1484	Mpdev:bin	vssadmin.exe
PID 1484 wrote to memory of 284	1484	Mpdev:bin	vssadmin.exe
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	takeown.exe
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	takeown.exe
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	takeown.exe
PID 1484 wrote to memory of 1804	1484	Mpdev:bin	takeown.exe
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	icacls.exe
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	icacls.exe
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	icacls.exe
PID 1484 wrote to memory of 1356	1484	Mpdev:bin	icacls.exe
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	cmd.exe
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	cmd.exe
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	cmd.exe
PID 1760 wrote to memory of 1624	1760	Mpdev.exe	cmd.exe
PID 1624 wrote to memory of 1532	1624	cmd.exe	choice.exe
PID 1624 wrote to memory of 1532	1624	cmd.exe	choice.exe
PID 1624 wrote to memory of 1532	1624	cmd.exe	choice.exe
PID 1624 wrote to memory of 1532	1624	cmd.exe	choice.exe
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	cmd.exe
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	cmd.exe
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	cmd.exe
PID 1484 wrote to memory of 1916	1484	Mpdev:bin	cmd.exe
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	cmd.exe
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	cmd.exe
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	cmd.exe
PID 1456 wrote to memory of 1944	1456	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	cmd.exe
PID 1916 wrote to memory of 1972	1916	cmd.exe	choice.exe
PID 1916 wrote to memory of 1972	1916	cmd.exe	choice.exe
PID 1916 wrote to memory of 1972	1916	cmd.exe	choice.exe
PID 1916 wrote to memory of 1972	1916	cmd.exe	choice.exe
PID 1944 wrote to memory of 1964	1944	cmd.exe	choice.exe
PID 1944 wrote to memory of 1964	1944	cmd.exe	choice.exe
PID 1944 wrote to memory of 1964	1944	cmd.exe	choice.exe
PID 1944 wrote to memory of 1964	1944	cmd.exe	choice.exe
PID 1624 wrote to memory of 1980	1624	cmd.exe	attrib.exe
PID 1624 wrote to memory of 1980	1624	cmd.exe	attrib.exe
PID 1624 wrote to memory of 1980	1624	cmd.exe	attrib.exe
PID 1624 wrote to memory of 1980	1624	cmd.exe	attrib.exe
PID 1916 wrote to memory of 2040	1916	cmd.exe	attrib.exe
PID 1916 wrote to memory of 2040	1916	cmd.exe	attrib.exe
PID 1916 wrote to memory of 2040	1916	cmd.exe	attrib.exe
PID 1916 wrote to memory of 2040	1916	cmd.exe	attrib.exe
PID 1944 wrote to memory of 2004	1944	cmd.exe	attrib.exe
PID 1944 wrote to memory of 2004	1944	cmd.exe	attrib.exe
PID 1944 wrote to memory of 2004	1944	cmd.exe	attrib.exe
PID 1944 wrote to memory of 2004	1944	cmd.exe	attrib.exe

Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Processes:

vssadmin.exe

pid process

284 vssadmin.exe

pid	process
284	vssadmin.exe

Drops file in System32 directory 2 IoCs

Processes:

Mpdev:binattrib.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Mpdev.exe	Mpdev:bin
File opened for modification	C:\Windows\SysWOW64\Mpdev.exe	attrib.exe

Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

1980 attrib.exe
2040 attrib.exe
2004 attrib.exe

pid	process
1980	attrib.exe
2040	attrib.exe
2004	attrib.exe

NTFS ADS 1 IoCs

Processes:

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Mpdev:bin	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Executes dropped EXE 2 IoCs

Processes:

Mpdev:binMpdev.exe

pid process

1484 Mpdev:bin
1760 Mpdev.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1944 cmd.exe

pid	process
1484	Mpdev:bin
1760	Mpdev.exe

pid	process
1944	cmd.exe

C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
"C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
- NTFS ADS
PID:1456

C:\Users\Admin\AppData\Roaming\Mpdev:bin
C:\Users\Admin\AppData\Roaming\Mpdev:bin -r
2⤵
- Suspicious use of WriteProcessMemory
- Drops file in System32 directory
- Executes dropped EXE
PID:1484

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:284

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Mpdev.exe
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1804

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Mpdev.exe /reset
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1356

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Mpdev" & del "C:\Users\Admin\AppData\Roaming\Mpdev"
3⤵
- Suspicious use of WriteProcessMemory
PID:1916

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1972

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Mpdev"
4⤵
- Views/modifies file attributes
PID:2040

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe" & del "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Deletes itself
PID:1944

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1964

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
3⤵
- Views/modifies file attributes
PID:2004

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:740

C:\Windows\SysWOW64\Mpdev.exe
C:\Windows\SysWOW64\Mpdev.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1760

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Mpdev.exe" & del "C:\Windows\SysWOW64\Mpdev.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1624

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1532

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Mpdev.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:1980