wastedlocker | 37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7v20201028
submitted
03-11-2020 14:20

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe
Size

58KB
MD5

6d9ad19726c79c0f7b4bf91475452e2d
SHA1

e6d92f05926c01ed146dbfdf02500c234ccf0888
SHA256

37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e
SHA512

87923aeb9b0d409975dd0d364a6c12b57afffde944ccb6707cff134d456f6b8e9c1753b63ff7ffcbc0d389c37a1cff1cadc5075e4ecb503ebcabeb3f631b5eb3

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
1860	Co:bin
1480	Co.exe

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\WaitGroup.tif.garminwasted_info	Co.exe
File renamed	C:\Users\Admin\Pictures\WaitGroup.tif => C:\Users\Admin\Pictures\WaitGroup.tif.garminwasted	Co.exe
File renamed	C:\Users\Admin\Pictures\DisconnectInstall.raw => C:\Users\Admin\Pictures\DisconnectInstall.raw.garminwasted	Co.exe
File renamed	C:\Users\Admin\Pictures\JoinUninstall.tiff => C:\Users\Admin\Pictures\JoinUninstall.tiff.garminwasted	Co.exe
File opened for modification	C:\Users\Admin\Pictures\JoinUninstall.tiff.garminwasted	Co.exe
File renamed	C:\Users\Admin\Pictures\SearchSet.tiff => C:\Users\Admin\Pictures\SearchSet.tiff.garminwasted	Co.exe
File opened for modification	C:\Users\Admin\Pictures\SearchSet.tiff.garminwasted	Co.exe
File opened for modification	C:\Users\Admin\Pictures\WaitGroup.tif.garminwasted	Co.exe
File created	C:\Users\Admin\Pictures\DisconnectInstall.raw.garminwasted_info	Co.exe
File opened for modification	C:\Users\Admin\Pictures\DisconnectInstall.raw.garminwasted	Co.exe
File created	C:\Users\Admin\Pictures\JoinUninstall.tiff.garminwasted_info	Co.exe
File created	C:\Users\Admin\Pictures\SearchSet.tiff.garminwasted_info	Co.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1780	takeown.exe
1688	icacls.exe

Deletes itself 1 IoCs

pid	Process
1712	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe
300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1780	takeown.exe
1688	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\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
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

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
1848	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Co:bin	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2016	vssvc.exe
Token: SeRestorePrivilege	2016	vssvc.exe
Token: SeAuditPrivilege	2016	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 300 wrote to memory of 1860	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	26
PID 300 wrote to memory of 1860	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	26
PID 300 wrote to memory of 1860	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	26
PID 300 wrote to memory of 1860	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	26
PID 1860 wrote to memory of 1848	1860	Co:bin	27
PID 1860 wrote to memory of 1848	1860	Co:bin	27
PID 1860 wrote to memory of 1848	1860	Co:bin	27
PID 1860 wrote to memory of 1848	1860	Co:bin	27
PID 1860 wrote to memory of 1780	1860	Co:bin	31
PID 1860 wrote to memory of 1780	1860	Co:bin	31
PID 1860 wrote to memory of 1780	1860	Co:bin	31
PID 1860 wrote to memory of 1780	1860	Co:bin	31
PID 1860 wrote to memory of 1688	1860	Co:bin	33
PID 1860 wrote to memory of 1688	1860	Co:bin	33
PID 1860 wrote to memory of 1688	1860	Co:bin	33
PID 1860 wrote to memory of 1688	1860	Co:bin	33
PID 1480 wrote to memory of 1268	1480	Co.exe	37
PID 1480 wrote to memory of 1268	1480	Co.exe	37
PID 1480 wrote to memory of 1268	1480	Co.exe	37
PID 1480 wrote to memory of 1268	1480	Co.exe	37
PID 1268 wrote to memory of 1612	1268	cmd.exe	39
PID 1268 wrote to memory of 1612	1268	cmd.exe	39
PID 1268 wrote to memory of 1612	1268	cmd.exe	39
PID 1268 wrote to memory of 1612	1268	cmd.exe	39
PID 1860 wrote to memory of 1548	1860	Co:bin	43
PID 1860 wrote to memory of 1548	1860	Co:bin	43
PID 1860 wrote to memory of 1548	1860	Co:bin	43
PID 1860 wrote to memory of 1548	1860	Co:bin	43
PID 300 wrote to memory of 1712	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	45
PID 300 wrote to memory of 1712	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	45
PID 300 wrote to memory of 1712	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	45
PID 300 wrote to memory of 1712	300	37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe	45
PID 1548 wrote to memory of 1704	1548	cmd.exe	47
PID 1548 wrote to memory of 1704	1548	cmd.exe	47
PID 1548 wrote to memory of 1704	1548	cmd.exe	47
PID 1548 wrote to memory of 1704	1548	cmd.exe	47
PID 1712 wrote to memory of 1584	1712	cmd.exe	48
PID 1712 wrote to memory of 1584	1712	cmd.exe	48
PID 1712 wrote to memory of 1584	1712	cmd.exe	48
PID 1712 wrote to memory of 1584	1712	cmd.exe	48
PID 1268 wrote to memory of 780	1268	cmd.exe	49
PID 1268 wrote to memory of 780	1268	cmd.exe	49
PID 1268 wrote to memory of 780	1268	cmd.exe	49
PID 1268 wrote to memory of 780	1268	cmd.exe	49
PID 1548 wrote to memory of 1788	1548	cmd.exe	50
PID 1548 wrote to memory of 1788	1548	cmd.exe	50
PID 1548 wrote to memory of 1788	1548	cmd.exe	50
PID 1548 wrote to memory of 1788	1548	cmd.exe	50
PID 1712 wrote to memory of 1792	1712	cmd.exe	51
PID 1712 wrote to memory of 1792	1712	cmd.exe	51
PID 1712 wrote to memory of 1792	1712	cmd.exe	51
PID 1712 wrote to memory of 1792	1712	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1792	attrib.exe
780	attrib.exe
1788	attrib.exe

C:\Users\Admin\AppData\Local\Temp\37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe
"C:\Users\Admin\AppData\Local\Temp\37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:300
- 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:1860
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1848
- - 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:1780
- - 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:1688
- - 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:1548
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1704
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Co"
      4⤵
      Views/modifies file attributes
      PID:1788
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1712
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1584
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\37a30621364d3083424b24b0255fc8f5752d88c381600d840574e551c284fb6e.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:1792

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:2016

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:1480
- 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:1268
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1612
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Co.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:780

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

Replay Monitor

Loading Replay Monitor...

Downloads