wastedlocker | ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56

Analysis

max time kernel
15s
max time network
104s
platform
windows10_x64
resource
win10v20201028
submitted
03/11/2020, 14:20

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General

Target

ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe
Size

58KB
MD5

33b80a574c6441baf5409a292aafb1cf
SHA1

8048aba11ea6209d1f49fa4e12741050350557df
SHA256

ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56
SHA512

52843695c364814c0d0d375f68f9c7202a26e492f59c01eaf23dd366da443ae6a02c2a7ff1748a033658808e900a61e097deb95c98de3744f2767faa040ddc00

Score

10^/10

wastedlocker discovery exploit persistence ransomware

Malware Config

Signatures

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker
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
3880	Server:bin
1416	Server.exe

Modifies extensions of user files 15 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\RenameApprove.crw => C:\Users\Admin\Pictures\RenameApprove.crw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\SkipUnpublish.tif.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\RepairFind.png.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\SkipUnpublish.tif => C:\Users\Admin\Pictures\SkipUnpublish.tif.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\DenyClose.tiff.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\ExportInvoke.crw.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\RenameApprove.crw.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\ExportInvoke.crw => C:\Users\Admin\Pictures\ExportInvoke.crw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\RepairFind.png.garminwasted_info	Server.exe
File renamed	C:\Users\Admin\Pictures\RepairFind.png => C:\Users\Admin\Pictures\RepairFind.png.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\DenyClose.tiff => C:\Users\Admin\Pictures\DenyClose.tiff.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\DenyClose.tiff.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\ExportInvoke.crw.garminwasted_info	Server.exe
File created	C:\Users\Admin\Pictures\RenameApprove.crw.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\SkipUnpublish.tif.garminwasted	Server.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
196	takeown.exe
2872	icacls.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
196	takeown.exe
2872	icacls.exe

Drops file in System32 directory 2 IoCs

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

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
2976	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Server:bin	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2972	vssvc.exe
Token: SeRestorePrivilege	2972	vssvc.exe
Token: SeAuditPrivilege	2972	vssvc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1160 wrote to memory of 3880	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	74
PID 1160 wrote to memory of 3880	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	74
PID 1160 wrote to memory of 3880	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	74
PID 3880 wrote to memory of 2976	3880	Server:bin	75
PID 3880 wrote to memory of 2976	3880	Server:bin	75
PID 3880 wrote to memory of 196	3880	Server:bin	81
PID 3880 wrote to memory of 196	3880	Server:bin	81
PID 3880 wrote to memory of 196	3880	Server:bin	81
PID 3880 wrote to memory of 2872	3880	Server:bin	83
PID 3880 wrote to memory of 2872	3880	Server:bin	83
PID 3880 wrote to memory of 2872	3880	Server:bin	83
PID 1416 wrote to memory of 3408	1416	Server.exe	86
PID 1416 wrote to memory of 3408	1416	Server.exe	86
PID 1416 wrote to memory of 3408	1416	Server.exe	86
PID 3408 wrote to memory of 1120	3408	cmd.exe	88
PID 3408 wrote to memory of 1120	3408	cmd.exe	88
PID 3408 wrote to memory of 1120	3408	cmd.exe	88
PID 3880 wrote to memory of 2076	3880	Server:bin	89
PID 3880 wrote to memory of 2076	3880	Server:bin	89
PID 3880 wrote to memory of 2076	3880	Server:bin	89
PID 1160 wrote to memory of 1296	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	90
PID 1160 wrote to memory of 1296	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	90
PID 1160 wrote to memory of 1296	1160	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	90
PID 2076 wrote to memory of 3948	2076	cmd.exe	93
PID 2076 wrote to memory of 3948	2076	cmd.exe	93
PID 2076 wrote to memory of 3948	2076	cmd.exe	93
PID 1296 wrote to memory of 1796	1296	cmd.exe	94
PID 1296 wrote to memory of 1796	1296	cmd.exe	94
PID 1296 wrote to memory of 1796	1296	cmd.exe	94
PID 3408 wrote to memory of 3660	3408	cmd.exe	98
PID 3408 wrote to memory of 3660	3408	cmd.exe	98
PID 3408 wrote to memory of 3660	3408	cmd.exe	98
PID 1296 wrote to memory of 3680	1296	cmd.exe	99
PID 1296 wrote to memory of 3680	1296	cmd.exe	99
PID 1296 wrote to memory of 3680	1296	cmd.exe	99
PID 2076 wrote to memory of 1016	2076	cmd.exe	100
PID 2076 wrote to memory of 1016	2076	cmd.exe	100
PID 2076 wrote to memory of 1016	2076	cmd.exe	100

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3660	attrib.exe
3680	attrib.exe
1016	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe
"C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1160
- C:\Users\Admin\AppData\Roaming\Server:bin
  C:\Users\Admin\AppData\Roaming\Server:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3880
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2976
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Server.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:196
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Server.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2872
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Server" & del "C:\Users\Admin\AppData\Roaming\Server"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2076
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:3948
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Server"
      4⤵
      Views/modifies file attributes
      PID:1016
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1796
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:3680

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:2972

C:\Windows\SysWOW64\Server.exe
C:\Windows\SysWOW64\Server.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1416
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Server.exe" & del "C:\Windows\SysWOW64\Server.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3408
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1120
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Server.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3660

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