wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

Analysis

max time kernel
117s
max time network
123s
platform
windows7_x64
resource
win7
submitted
10/07/2020, 12:03

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General

Target

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
Size

1.0MB
MD5

572fea5f025df78f2d316216fbeee52e
SHA1

91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA256

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
SHA512

eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Score

10^/10

ransomware wastedlocker exploit persistence discovery

Malware Config

Signatures

Suspicious use of WriteProcessMemory 61 IoCs

description	pid	Process	procid_target
PID 1492 wrote to memory of 1552	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1492 wrote to memory of 1552	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1492 wrote to memory of 1552	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1492 wrote to memory of 1552	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	24
PID 1552 wrote to memory of 1620	1552	Installers:bin	25
PID 1552 wrote to memory of 1620	1552	Installers:bin	25
PID 1552 wrote to memory of 1620	1552	Installers:bin	25
PID 1552 wrote to memory of 1620	1552	Installers:bin	25
PID 1552 wrote to memory of 1760	1552	Installers:bin	29
PID 1552 wrote to memory of 1760	1552	Installers:bin	29
PID 1552 wrote to memory of 1760	1552	Installers:bin	29
PID 1552 wrote to memory of 1760	1552	Installers:bin	29
PID 1552 wrote to memory of 1880	1552	Installers:bin	31
PID 1552 wrote to memory of 1880	1552	Installers:bin	31
PID 1552 wrote to memory of 1880	1552	Installers:bin	31
PID 1552 wrote to memory of 1880	1552	Installers:bin	31
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1900 wrote to memory of 1816	1900	Installers.exe	35
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1816 wrote to memory of 1564	1816	cmd.exe	37
PID 1552 wrote to memory of 1580	1552	Installers:bin	38
PID 1552 wrote to memory of 1580	1552	Installers:bin	38
PID 1552 wrote to memory of 1580	1552	Installers:bin	38
PID 1552 wrote to memory of 1580	1552	Installers:bin	38
PID 1492 wrote to memory of 1628	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1492 wrote to memory of 1628	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1492 wrote to memory of 1628	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1492 wrote to memory of 1628	1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	40
PID 1580 wrote to memory of 1992	1580	cmd.exe	42
PID 1580 wrote to memory of 1992	1580	cmd.exe	42
PID 1580 wrote to memory of 1992	1580	cmd.exe	42
PID 1580 wrote to memory of 1992	1580	cmd.exe	42
PID 1628 wrote to memory of 1984	1628	cmd.exe	43
PID 1628 wrote to memory of 1984	1628	cmd.exe	43
PID 1628 wrote to memory of 1984	1628	cmd.exe	43
PID 1628 wrote to memory of 1984	1628	cmd.exe	43
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1816 wrote to memory of 1960	1816	cmd.exe	44
PID 1628 wrote to memory of 2044	1628	cmd.exe	45
PID 1628 wrote to memory of 2044	1628	cmd.exe	45
PID 1628 wrote to memory of 2044	1628	cmd.exe	45
PID 1628 wrote to memory of 2044	1628	cmd.exe	45
PID 1580 wrote to memory of 2040	1580	cmd.exe	46
PID 1580 wrote to memory of 2040	1580	cmd.exe	46
PID 1580 wrote to memory of 2040	1580	cmd.exe	46
PID 1580 wrote to memory of 2040	1580	cmd.exe	46

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
1620	vssadmin.exe

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1760	takeown.exe
1880	icacls.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

pid	Process
1552	Installers:bin
1900	Installers.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	324	vssvc.exe
Token: SeRestorePrivilege	324	vssvc.exe
Token: SeAuditPrivilege	324	vssvc.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Installers:bin	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Installers.exe	Installers:bin
File opened for modification	C:\Windows\SysWOW64\Installers.exe	attrib.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1760	takeown.exe
1880	icacls.exe

Deletes itself 1 IoCs

pid	Process
1628	cmd.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1960	attrib.exe
2044	attrib.exe
2040	attrib.exe

Loads dropped DLL 5 IoCs

pid	Process
1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
1492	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
1900	Installers.exe
1900	Installers.exe
1900	Installers.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\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

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
1⤵
- Suspicious use of WriteProcessMemory
- NTFS ADS
- Loads dropped DLL
PID:1492
- C:\Users\Admin\AppData\Roaming\Installers:bin
  C:\Users\Admin\AppData\Roaming\Installers:bin -r
  2⤵
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  - Drops file in System32 directory
  PID:1552
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1620
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Installers.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1760
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Installers.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1880
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Installers" & del "C:\Users\Admin\AppData\Roaming\Installers"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1580
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1992
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Installers"
      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\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe" & del "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Deletes itself
  PID:1628
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1984
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
    3⤵
    - Views/modifies file attributes
    PID:2044

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:324

C:\Windows\SysWOW64\Installers.exe
C:\Windows\SysWOW64\Installers.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
- Loads dropped DLL
PID:1900
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Installers.exe" & del "C:\Windows\SysWOW64\Installers.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1564
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Installers.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1960

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

Windows 7 deprecation

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads