875ddb6faf9740e2a28b6a7b31e5aeab700d824b6bfb5991c092520265c30ff2

General

Target

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
Size

1.0MB
MD5

572fea5f025df78f2d316216fbeee52e
SHA1

91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA256

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
SHA512

eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Score

9^/10

ransomware persistence discovery exploit

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Wmi:binWmi.exe

pid process

1688 Wmi:bin
2016 Wmi.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1568 cmd.exe

pid	process
1688	Wmi:bin
2016	Wmi.exe

pid	process
1568	cmd.exe

NTFS ADS 1 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Wmi:bin	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.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

1776 vssadmin.exe

pid	process
1776	vssadmin.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\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
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

Drops file in System32 directory 2 IoCs

Processes:

Wmi:binattrib.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Wmi.exe Wmi:bin
File opened for modification C:\Windows\SysWOW64\Wmi.exe attrib.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1976 takeown.exe
1996 icacls.exe

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

pid	process
1976	takeown.exe
1996	icacls.exe

Loads dropped DLL 2 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

pid	process
1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exeWmi:binWmi.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	Wmi:bin
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	Wmi:bin
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	Wmi:bin
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	Wmi:bin
PID 1688 wrote to memory of 1776	1688	Wmi:bin	vssadmin.exe
PID 1688 wrote to memory of 1776	1688	Wmi:bin	vssadmin.exe
PID 1688 wrote to memory of 1776	1688	Wmi:bin	vssadmin.exe
PID 1688 wrote to memory of 1776	1688	Wmi:bin	vssadmin.exe
PID 1688 wrote to memory of 1976	1688	Wmi:bin	takeown.exe
PID 1688 wrote to memory of 1976	1688	Wmi:bin	takeown.exe
PID 1688 wrote to memory of 1976	1688	Wmi:bin	takeown.exe
PID 1688 wrote to memory of 1976	1688	Wmi:bin	takeown.exe
PID 1688 wrote to memory of 1996	1688	Wmi:bin	icacls.exe
PID 1688 wrote to memory of 1996	1688	Wmi:bin	icacls.exe
PID 1688 wrote to memory of 1996	1688	Wmi:bin	icacls.exe
PID 1688 wrote to memory of 1996	1688	Wmi:bin	icacls.exe
PID 2016 wrote to memory of 1676	2016	Wmi.exe	cmd.exe
PID 2016 wrote to memory of 1676	2016	Wmi.exe	cmd.exe
PID 2016 wrote to memory of 1676	2016	Wmi.exe	cmd.exe
PID 2016 wrote to memory of 1676	2016	Wmi.exe	cmd.exe
PID 1676 wrote to memory of 1580	1676	cmd.exe	choice.exe
PID 1676 wrote to memory of 1580	1676	cmd.exe	choice.exe
PID 1676 wrote to memory of 1580	1676	cmd.exe	choice.exe
PID 1676 wrote to memory of 1580	1676	cmd.exe	choice.exe
PID 1688 wrote to memory of 1628	1688	Wmi:bin	cmd.exe
PID 1688 wrote to memory of 1628	1688	Wmi:bin	cmd.exe
PID 1688 wrote to memory of 1628	1688	Wmi:bin	cmd.exe
PID 1688 wrote to memory of 1628	1688	Wmi:bin	cmd.exe
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	cmd.exe
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	cmd.exe
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	cmd.exe
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	cmd.exe
PID 1628 wrote to memory of 1412	1628	cmd.exe	choice.exe
PID 1628 wrote to memory of 1412	1628	cmd.exe	choice.exe
PID 1628 wrote to memory of 1412	1628	cmd.exe	choice.exe
PID 1628 wrote to memory of 1412	1628	cmd.exe	choice.exe
PID 1568 wrote to memory of 1228	1568	cmd.exe	choice.exe
PID 1568 wrote to memory of 1228	1568	cmd.exe	choice.exe
PID 1568 wrote to memory of 1228	1568	cmd.exe	choice.exe
PID 1568 wrote to memory of 1228	1568	cmd.exe	choice.exe
PID 1676 wrote to memory of 1140	1676	cmd.exe	attrib.exe
PID 1676 wrote to memory of 1140	1676	cmd.exe	attrib.exe
PID 1676 wrote to memory of 1140	1676	cmd.exe	attrib.exe
PID 1676 wrote to memory of 1140	1676	cmd.exe	attrib.exe
PID 1628 wrote to memory of 852	1628	cmd.exe	attrib.exe
PID 1628 wrote to memory of 852	1628	cmd.exe	attrib.exe
PID 1628 wrote to memory of 852	1628	cmd.exe	attrib.exe
PID 1628 wrote to memory of 852	1628	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1504	1568	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1504	1568	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1504	1568	cmd.exe	attrib.exe
PID 1568 wrote to memory of 1504	1568	cmd.exe	attrib.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1860 vssvc.exe
Token: SeRestorePrivilege 1860 vssvc.exe
Token: SeAuditPrivilege 1860 vssvc.exe
Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

1140 attrib.exe
852 attrib.exe
1504 attrib.exe
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Possible privilege escalation attempt 2 IoCs
exploit

Processes:

icacls.exetakeown.exe

pid process

1996 icacls.exe
1976 takeown.exe

description	pid	process
Token: SeBackupPrivilege	1860	vssvc.exe
Token: SeRestorePrivilege	1860	vssvc.exe
Token: SeAuditPrivilege	1860	vssvc.exe

pid	process
1140	attrib.exe
852	attrib.exe
1504	attrib.exe

pid	process
1996	icacls.exe
1976	takeown.exe

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
1⤵
- NTFS ADS
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1516

C:\Users\Admin\AppData\Roaming\Wmi:bin
C:\Users\Admin\AppData\Roaming\Wmi:bin -r
2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:1688

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1776

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Wmi.exe
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1976

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Wmi.exe /reset
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1996

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Wmi" & del "C:\Users\Admin\AppData\Roaming\Wmi"
3⤵
- Suspicious use of WriteProcessMemory
PID:1628

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1412

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Wmi"
4⤵
- Views/modifies file attributes
PID:852

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe" & del "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1568

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1228

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
3⤵
- Views/modifies file attributes
PID:1504

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1860

C:\Windows\SysWOW64\Wmi.exe
C:\Windows\SysWOW64\Wmi.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Wmi.exe" & del "C:\Windows\SysWOW64\Wmi.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1676

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1580

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Wmi.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:1140