875ddb6faf9740e2a28b6a7b31e5aeab700d824b6bfb5991c092520265c30ff2

Analysis

max time kernel
130s
max time network
136s
platform
windows7_x64
resource
win7
submitted
26/06/2020, 12:38

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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

pid	Process
1688	Wmi:bin
2016	Wmi.exe

Deletes itself 1 IoCs

pid	Process
1568	cmd.exe

NTFS ADS 1 IoCs

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

pid	Process
1776	vssadmin.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

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

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 and Directory Permissions Modification

T1222

pid	Process
1976	takeown.exe
1996	icacls.exe

Loads dropped DLL 2 IoCs

pid	Process
1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1516 wrote to memory of 1688	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1688 wrote to memory of 1776	1688	Wmi:bin	25
PID 1688 wrote to memory of 1776	1688	Wmi:bin	25
PID 1688 wrote to memory of 1776	1688	Wmi:bin	25
PID 1688 wrote to memory of 1776	1688	Wmi:bin	25
PID 1688 wrote to memory of 1976	1688	Wmi:bin	29
PID 1688 wrote to memory of 1976	1688	Wmi:bin	29
PID 1688 wrote to memory of 1976	1688	Wmi:bin	29
PID 1688 wrote to memory of 1976	1688	Wmi:bin	29
PID 1688 wrote to memory of 1996	1688	Wmi:bin	31
PID 1688 wrote to memory of 1996	1688	Wmi:bin	31
PID 1688 wrote to memory of 1996	1688	Wmi:bin	31
PID 1688 wrote to memory of 1996	1688	Wmi:bin	31
PID 2016 wrote to memory of 1676	2016	Wmi.exe	35
PID 2016 wrote to memory of 1676	2016	Wmi.exe	35
PID 2016 wrote to memory of 1676	2016	Wmi.exe	35
PID 2016 wrote to memory of 1676	2016	Wmi.exe	35
PID 1676 wrote to memory of 1580	1676	cmd.exe	37
PID 1676 wrote to memory of 1580	1676	cmd.exe	37
PID 1676 wrote to memory of 1580	1676	cmd.exe	37
PID 1676 wrote to memory of 1580	1676	cmd.exe	37
PID 1688 wrote to memory of 1628	1688	Wmi:bin	38
PID 1688 wrote to memory of 1628	1688	Wmi:bin	38
PID 1688 wrote to memory of 1628	1688	Wmi:bin	38
PID 1688 wrote to memory of 1628	1688	Wmi:bin	38
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1516 wrote to memory of 1568	1516	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1628 wrote to memory of 1412	1628	cmd.exe	42
PID 1628 wrote to memory of 1412	1628	cmd.exe	42
PID 1628 wrote to memory of 1412	1628	cmd.exe	42
PID 1628 wrote to memory of 1412	1628	cmd.exe	42
PID 1568 wrote to memory of 1228	1568	cmd.exe	43
PID 1568 wrote to memory of 1228	1568	cmd.exe	43
PID 1568 wrote to memory of 1228	1568	cmd.exe	43
PID 1568 wrote to memory of 1228	1568	cmd.exe	43
PID 1676 wrote to memory of 1140	1676	cmd.exe	44
PID 1676 wrote to memory of 1140	1676	cmd.exe	44
PID 1676 wrote to memory of 1140	1676	cmd.exe	44
PID 1676 wrote to memory of 1140	1676	cmd.exe	44
PID 1628 wrote to memory of 852	1628	cmd.exe	45
PID 1628 wrote to memory of 852	1628	cmd.exe	45
PID 1628 wrote to memory of 852	1628	cmd.exe	45
PID 1628 wrote to memory of 852	1628	cmd.exe	45
PID 1568 wrote to memory of 1504	1568	cmd.exe	46
PID 1568 wrote to memory of 1504	1568	cmd.exe	46
PID 1568 wrote to memory of 1504	1568	cmd.exe	46
PID 1568 wrote to memory of 1504	1568	cmd.exe	46

Suspicious use of AdjustPrivilegeToken 3 IoCs

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

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

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

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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