wastedlocker | ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56

Analysis

max time kernel
27s
max time network
25s
platform
windows7_x64
resource
win7v20201028
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
1848	Co:bin
1492	Co.exe

Modifies extensions of user files 9 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\MergeCheckpoint.crw.garminwasted	Co.exe
File created	C:\Users\Admin\Pictures\CheckpointComplete.tif.garminwasted_info	Co.exe
File created	C:\Users\Admin\Pictures\DismountCheckpoint.tiff.garminwasted_info	Co.exe
File opened for modification	C:\Users\Admin\Pictures\DismountCheckpoint.tiff.garminwasted	Co.exe
File created	C:\Users\Admin\Pictures\MergeCheckpoint.crw.garminwasted_info	Co.exe
File renamed	C:\Users\Admin\Pictures\MergeCheckpoint.crw => C:\Users\Admin\Pictures\MergeCheckpoint.crw.garminwasted	Co.exe
File renamed	C:\Users\Admin\Pictures\CheckpointComplete.tif => C:\Users\Admin\Pictures\CheckpointComplete.tif.garminwasted	Co.exe
File opened for modification	C:\Users\Admin\Pictures\CheckpointComplete.tif.garminwasted	Co.exe
File renamed	C:\Users\Admin\Pictures\DismountCheckpoint.tiff => C:\Users\Admin\Pictures\DismountCheckpoint.tiff.garminwasted	Co.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1768	takeown.exe
1284	icacls.exe

Deletes itself 1 IoCs

pid	Process
1660	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe
336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1768	takeown.exe
1284	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Co.exe	Co:bin
File opened for modification	C:\Windows\SysWOW64\Co.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\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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry 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
1988	vssadmin.exe

NTFS ADS 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1320	vssvc.exe
Token: SeRestorePrivilege	1320	vssvc.exe
Token: SeAuditPrivilege	1320	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 336 wrote to memory of 1848	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	26
PID 336 wrote to memory of 1848	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	26
PID 336 wrote to memory of 1848	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	26
PID 336 wrote to memory of 1848	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	26
PID 1848 wrote to memory of 1988	1848	Co:bin	27
PID 1848 wrote to memory of 1988	1848	Co:bin	27
PID 1848 wrote to memory of 1988	1848	Co:bin	27
PID 1848 wrote to memory of 1988	1848	Co:bin	27
PID 1848 wrote to memory of 1768	1848	Co:bin	31
PID 1848 wrote to memory of 1768	1848	Co:bin	31
PID 1848 wrote to memory of 1768	1848	Co:bin	31
PID 1848 wrote to memory of 1768	1848	Co:bin	31
PID 1848 wrote to memory of 1284	1848	Co:bin	33
PID 1848 wrote to memory of 1284	1848	Co:bin	33
PID 1848 wrote to memory of 1284	1848	Co:bin	33
PID 1848 wrote to memory of 1284	1848	Co:bin	33
PID 1492 wrote to memory of 888	1492	Co.exe	37
PID 1492 wrote to memory of 888	1492	Co.exe	37
PID 1492 wrote to memory of 888	1492	Co.exe	37
PID 1492 wrote to memory of 888	1492	Co.exe	37
PID 888 wrote to memory of 1460	888	cmd.exe	39
PID 888 wrote to memory of 1460	888	cmd.exe	39
PID 888 wrote to memory of 1460	888	cmd.exe	39
PID 888 wrote to memory of 1460	888	cmd.exe	39
PID 1848 wrote to memory of 2032	1848	Co:bin	43
PID 1848 wrote to memory of 2032	1848	Co:bin	43
PID 1848 wrote to memory of 2032	1848	Co:bin	43
PID 1848 wrote to memory of 2032	1848	Co:bin	43
PID 336 wrote to memory of 1660	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	44
PID 336 wrote to memory of 1660	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	44
PID 336 wrote to memory of 1660	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	44
PID 336 wrote to memory of 1660	336	ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe	44
PID 2032 wrote to memory of 1640	2032	cmd.exe	47
PID 2032 wrote to memory of 1640	2032	cmd.exe	47
PID 2032 wrote to memory of 1640	2032	cmd.exe	47
PID 2032 wrote to memory of 1640	2032	cmd.exe	47
PID 1660 wrote to memory of 1628	1660	cmd.exe	48
PID 1660 wrote to memory of 1628	1660	cmd.exe	48
PID 1660 wrote to memory of 1628	1660	cmd.exe	48
PID 1660 wrote to memory of 1628	1660	cmd.exe	48
PID 888 wrote to memory of 1468	888	cmd.exe	49
PID 888 wrote to memory of 1468	888	cmd.exe	49
PID 888 wrote to memory of 1468	888	cmd.exe	49
PID 888 wrote to memory of 1468	888	cmd.exe	49
PID 2032 wrote to memory of 1388	2032	cmd.exe	50
PID 2032 wrote to memory of 1388	2032	cmd.exe	50
PID 2032 wrote to memory of 1388	2032	cmd.exe	50
PID 2032 wrote to memory of 1388	2032	cmd.exe	50
PID 1660 wrote to memory of 1692	1660	cmd.exe	51
PID 1660 wrote to memory of 1692	1660	cmd.exe	51
PID 1660 wrote to memory of 1692	1660	cmd.exe	51
PID 1660 wrote to memory of 1692	1660	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1468	attrib.exe
1388	attrib.exe
1692	attrib.exe

C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe
"C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:336
- C:\Users\Admin\AppData\Roaming\Co:bin
  C:\Users\Admin\AppData\Roaming\Co:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1848
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1988
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Co.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1768
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Co.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1284
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Co" & del "C:\Users\Admin\AppData\Roaming\Co"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2032
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1640
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Co"
      4⤵
      Views/modifies file attributes
      PID:1388
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1660
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1628
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\ab007094afec534a2aa64436f214866014a664e7399aeaf361790ede5eec6b56.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:1692

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1320

C:\Windows\SysWOW64\Co.exe
C:\Windows\SysWOW64\Co.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1492
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Co.exe" & del "C:\Windows\SysWOW64\Co.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:888
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1460
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Co.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1468

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

Replay Monitor

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Downloads