wastedlocker | 7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a

Analysis

max time kernel
78s
max time network
134s
platform
windows10_x64
resource
win10v20201028
submitted
03-11-2020 14:19

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General

Target

7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe
Size

60KB
MD5

2000de399f4c0ad50a26780700ed6cac
SHA1

70c0d6b0a8485df01ed893a7919009f099591083
SHA256

7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a
SHA512

378cfc46bb17be59975c29e19cb08d5c899eb088639b3446470e286c831ef4f71179316e0c8cbfad8bcc6d77c6dc5cb3ec96690a9a0a0646e69edcd3648e340b

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
4032	Ci:bin
2580	Ci.exe

Modifies extensions of user files 27 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ClearReceive.raw.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\CompressInstall.tiff.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\CompressInstall.tiff => C:\Users\Admin\Pictures\CompressInstall.tiff.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\ImportRevoke.crw.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\ImportUnlock.tif.rlhwasted_info	Ci.exe
File created	C:\Users\Admin\Pictures\ShowTrace.png.rlhwasted_info	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\UnblockFormat.tiff.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\ApproveMount.png.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\ApproveMount.png => C:\Users\Admin\Pictures\ApproveMount.png.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\ImportRevoke.crw.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\ImportRevoke.crw => C:\Users\Admin\Pictures\ImportRevoke.crw.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\InstallStep.crw.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\InstallStep.crw => C:\Users\Admin\Pictures\InstallStep.crw.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\UnblockFormat.tiff.rlhwasted_info	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\CompressInstall.tiff.rlhwasted	Ci.exe
File renamed	C:\Users\Admin\Pictures\DisableUnpublish.raw => C:\Users\Admin\Pictures\DisableUnpublish.raw.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\ImportUnlock.tif.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\ClearReceive.raw.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\ClearReceive.raw => C:\Users\Admin\Pictures\ClearReceive.raw.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\DisableUnpublish.raw.rlhwasted	Ci.exe
File renamed	C:\Users\Admin\Pictures\ShowTrace.png => C:\Users\Admin\Pictures\ShowTrace.png.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\ShowTrace.png.rlhwasted	Ci.exe
File renamed	C:\Users\Admin\Pictures\UnblockFormat.tiff => C:\Users\Admin\Pictures\UnblockFormat.tiff.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\ApproveMount.png.rlhwasted	Ci.exe
File created	C:\Users\Admin\Pictures\DisableUnpublish.raw.rlhwasted_info	Ci.exe
File renamed	C:\Users\Admin\Pictures\ImportUnlock.tif => C:\Users\Admin\Pictures\ImportUnlock.tif.rlhwasted	Ci.exe
File opened for modification	C:\Users\Admin\Pictures\InstallStep.crw.rlhwasted	Ci.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3744	takeown.exe
1020	icacls.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3744	takeown.exe
1020	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Ci.exe	Ci:bin
File opened for modification	C:\Windows\SysWOW64\Ci.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\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
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
3460	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Ci:bin	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	3856	vssvc.exe
Token: SeRestorePrivilege	3856	vssvc.exe
Token: SeAuditPrivilege	3856	vssvc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3304 wrote to memory of 4032	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	75
PID 3304 wrote to memory of 4032	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	75
PID 3304 wrote to memory of 4032	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	75
PID 4032 wrote to memory of 3460	4032	Ci:bin	76
PID 4032 wrote to memory of 3460	4032	Ci:bin	76
PID 4032 wrote to memory of 3744	4032	Ci:bin	80
PID 4032 wrote to memory of 3744	4032	Ci:bin	80
PID 4032 wrote to memory of 3744	4032	Ci:bin	80
PID 4032 wrote to memory of 1020	4032	Ci:bin	82
PID 4032 wrote to memory of 1020	4032	Ci:bin	82
PID 4032 wrote to memory of 1020	4032	Ci:bin	82
PID 2580 wrote to memory of 3864	2580	Ci.exe	85
PID 2580 wrote to memory of 3864	2580	Ci.exe	85
PID 2580 wrote to memory of 3864	2580	Ci.exe	85
PID 3864 wrote to memory of 2264	3864	cmd.exe	87
PID 3864 wrote to memory of 2264	3864	cmd.exe	87
PID 3864 wrote to memory of 2264	3864	cmd.exe	87
PID 4032 wrote to memory of 1940	4032	Ci:bin	88
PID 4032 wrote to memory of 1940	4032	Ci:bin	88
PID 4032 wrote to memory of 1940	4032	Ci:bin	88
PID 3304 wrote to memory of 1280	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	90
PID 3304 wrote to memory of 1280	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	90
PID 3304 wrote to memory of 1280	3304	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	90
PID 1940 wrote to memory of 4004	1940	cmd.exe	92
PID 1940 wrote to memory of 4004	1940	cmd.exe	92
PID 1940 wrote to memory of 4004	1940	cmd.exe	92
PID 1280 wrote to memory of 980	1280	cmd.exe	93
PID 1280 wrote to memory of 980	1280	cmd.exe	93
PID 1280 wrote to memory of 980	1280	cmd.exe	93
PID 3864 wrote to memory of 3292	3864	cmd.exe	98
PID 3864 wrote to memory of 3292	3864	cmd.exe	98
PID 3864 wrote to memory of 3292	3864	cmd.exe	98
PID 1940 wrote to memory of 2792	1940	cmd.exe	99
PID 1940 wrote to memory of 2792	1940	cmd.exe	99
PID 1940 wrote to memory of 2792	1940	cmd.exe	99
PID 1280 wrote to memory of 4028	1280	cmd.exe	100
PID 1280 wrote to memory of 4028	1280	cmd.exe	100
PID 1280 wrote to memory of 4028	1280	cmd.exe	100

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
2792	attrib.exe
4028	attrib.exe
3292	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe
"C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3304
- C:\Users\Admin\AppData\Roaming\Ci:bin
  C:\Users\Admin\AppData\Roaming\Ci:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:4032
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3460
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Ci.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3744
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Ci.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1020
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Ci" & del "C:\Users\Admin\AppData\Roaming\Ci"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1940
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:4004
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Ci"
      4⤵
      Views/modifies file attributes
      PID:2792
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe" & del "C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1280
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:980
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:4028

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:3856

C:\Windows\SysWOW64\Ci.exe
C:\Windows\SysWOW64\Ci.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:2580
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Ci.exe" & del "C:\Windows\SysWOW64\Ci.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3864
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2264
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Ci.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3292

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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