wastedlocker | 6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e

Analysis

max time kernel
150s
max time network
150s
platform
windows10_x64
resource
win10v20201028
submitted
03/11/2020, 14:20

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General

Target

6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe
Size

60KB
MD5

9b5f5e7d14bd7d73b5adda12d4015ef4
SHA1

a41daf00a0193a8d8583801f8cb20405d9678296
SHA256

6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e
SHA512

83042c7a33d27edd86e1d9303fb587c1456017d2a87ab82bba80a9360569432197ecc599b2b810d0f71c91d6f3116e390ea6244fc0630a972a50da8f825e18de

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
2412	Server:bin
3636	Server.exe

Modifies extensions of user files 24 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\SkipResume.png => C:\Users\Admin\Pictures\SkipResume.png.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\UnpublishExpand.crw.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\HideCompare.tif => C:\Users\Admin\Pictures\HideCompare.tif.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\OptimizeOut.crw.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\CompareEnter.raw.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\DisableCheckpoint.raw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\FormatWait.png.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\FormatWait.png.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\HideCompare.tif.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\OptimizeOut.crw => C:\Users\Admin\Pictures\OptimizeOut.crw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\CompareEnter.raw.garminwasted_info	Server.exe
File renamed	C:\Users\Admin\Pictures\CompareEnter.raw => C:\Users\Admin\Pictures\CompareEnter.raw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\SkipResume.png.garminwasted_info	Server.exe
File created	C:\Users\Admin\Pictures\UnpublishExpand.crw.garminwasted_info	Server.exe
File renamed	C:\Users\Admin\Pictures\DisableCheckpoint.raw => C:\Users\Admin\Pictures\DisableCheckpoint.raw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\HideCompare.tif.garminwasted_info	Server.exe
File opened for modification	C:\Users\Admin\Pictures\OptimizeOut.crw.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\SkipResume.png.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\UnpublishExpand.crw => C:\Users\Admin\Pictures\UnpublishExpand.crw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\CompleteRegister.crw.garminwasted_info	Server.exe
File renamed	C:\Users\Admin\Pictures\CompleteRegister.crw => C:\Users\Admin\Pictures\CompleteRegister.crw.garminwasted	Server.exe
File renamed	C:\Users\Admin\Pictures\FormatWait.png => C:\Users\Admin\Pictures\FormatWait.png.garminwasted	Server.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteRegister.crw.garminwasted	Server.exe
File created	C:\Users\Admin\Pictures\DisableCheckpoint.raw.garminwasted_info	Server.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
2332	icacls.exe
184	takeown.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
184	takeown.exe
2332	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\Shadow Copy Optimization 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\Registry Writer	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
2452	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Server:bin	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4072	vssvc.exe
Token: SeRestorePrivilege	4072	vssvc.exe
Token: SeAuditPrivilege	4072	vssvc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 1148 wrote to memory of 2412	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	75
PID 1148 wrote to memory of 2412	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	75
PID 1148 wrote to memory of 2412	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	75
PID 2412 wrote to memory of 2452	2412	Server:bin	76
PID 2412 wrote to memory of 2452	2412	Server:bin	76
PID 2412 wrote to memory of 184	2412	Server:bin	81
PID 2412 wrote to memory of 184	2412	Server:bin	81
PID 2412 wrote to memory of 184	2412	Server:bin	81
PID 2412 wrote to memory of 2332	2412	Server:bin	83
PID 2412 wrote to memory of 2332	2412	Server:bin	83
PID 2412 wrote to memory of 2332	2412	Server:bin	83
PID 3636 wrote to memory of 2240	3636	Server.exe	86
PID 3636 wrote to memory of 2240	3636	Server.exe	86
PID 3636 wrote to memory of 2240	3636	Server.exe	86
PID 2240 wrote to memory of 900	2240	cmd.exe	88
PID 2240 wrote to memory of 900	2240	cmd.exe	88
PID 2240 wrote to memory of 900	2240	cmd.exe	88
PID 2412 wrote to memory of 640	2412	Server:bin	89
PID 2412 wrote to memory of 640	2412	Server:bin	89
PID 2412 wrote to memory of 640	2412	Server:bin	89
PID 1148 wrote to memory of 2296	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	91
PID 1148 wrote to memory of 2296	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	91
PID 1148 wrote to memory of 2296	1148	6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe	91
PID 640 wrote to memory of 1364	640	cmd.exe	93
PID 640 wrote to memory of 1364	640	cmd.exe	93
PID 640 wrote to memory of 1364	640	cmd.exe	93
PID 2296 wrote to memory of 3780	2296	cmd.exe	94
PID 2296 wrote to memory of 3780	2296	cmd.exe	94
PID 2296 wrote to memory of 3780	2296	cmd.exe	94
PID 2240 wrote to memory of 2768	2240	cmd.exe	98
PID 2240 wrote to memory of 2768	2240	cmd.exe	98
PID 2240 wrote to memory of 2768	2240	cmd.exe	98
PID 640 wrote to memory of 3768	640	cmd.exe	99
PID 640 wrote to memory of 3768	640	cmd.exe	99
PID 640 wrote to memory of 3768	640	cmd.exe	99
PID 2296 wrote to memory of 2992	2296	cmd.exe	100
PID 2296 wrote to memory of 2992	2296	cmd.exe	100
PID 2296 wrote to memory of 2992	2296	cmd.exe	100

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2768	attrib.exe
3768	attrib.exe
2992	attrib.exe

C:\Users\Admin\AppData\Local\Temp\6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe
"C:\Users\Admin\AppData\Local\Temp\6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1148
- 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:2412
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2452
- - 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:184
- - 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:2332
- - 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:640
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1364
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Server"
      4⤵
      Views/modifies file attributes
      PID:3768
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2296
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:3780
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\6d35b01dbe014c6efc18d587c2be5e12617e1681cc670ba5c49fe7ead9de780e.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:2992

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:4072

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:3636
- 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:2240
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:900
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Server.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:2768

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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