wastedlocker | 0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821

General

Target

0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe
Size

112KB
MD5

d01fc079881dc0d33a88e4f8df1ae7ce
SHA1

c40c8848808da12ef78c68de1e6477b862161a43
SHA256

0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821
SHA512

83bca79d1f0ac14c6d79685fd192964e7117e8c9c734036abddfdbb068c801ff38027a0812a2499e1d9e528a47af07150cafee27384b5a78b8fc32c23bd21130

Score

10^/10

persistence exploit ransomware discovery wastedlocker

Malware Config

Signatures

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

Processes:

vssvc.exe

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

Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1056 takeown.exe
1544 icacls.exe
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

pid	process
1056	takeown.exe
1544	icacls.exe

Modifies extensions of user files 6 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

Device.exe

description	ioc	process
File opened for modification	C:\Users\Admin\Pictures\SkipUpdate.png.tcwwasted	Device.exe
File created	C:\Users\Admin\Pictures\ConfirmResume.tif.tcwwasted_info	Device.exe
File renamed	C:\Users\Admin\Pictures\ConfirmResume.tif => C:\Users\Admin\Pictures\ConfirmResume.tif.tcwwasted	Device.exe
File opened for modification	C:\Users\Admin\Pictures\ConfirmResume.tif.tcwwasted	Device.exe
File created	C:\Users\Admin\Pictures\SkipUpdate.png.tcwwasted_info	Device.exe
File renamed	C:\Users\Admin\Pictures\SkipUpdate.png => C:\Users\Admin\Pictures\SkipUpdate.png.tcwwasted	Device.exe

Loads dropped DLL 2 IoCs

Processes:

0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe

pid	process
2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe
2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1420 vssvc.exe
Token: SeRestorePrivilege 1420 vssvc.exe
Token: SeAuditPrivilege 1420 vssvc.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1056 takeown.exe
1544 icacls.exe
WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker

description	pid	process
Token: SeBackupPrivilege	1420	vssvc.exe
Token: SeRestorePrivilege	1420	vssvc.exe
Token: SeAuditPrivilege	1420	vssvc.exe

pid	process
1056	takeown.exe
1544	icacls.exe

NTFS ADS 1 IoCs

Processes:

0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Device:bin	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.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

Processes:

vssadmin.exe

pid process

1232 vssadmin.exe

pid	process
1232	vssadmin.exe

Drops file in System32 directory 2 IoCs

Processes:

Device:binattrib.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\Device.exe	Device:bin
File opened for modification	C:\Windows\SysWOW64\Device.exe	attrib.exe

Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

1888 attrib.exe
1904 attrib.exe
1868 attrib.exe

pid	process
1888	attrib.exe
1904	attrib.exe
1868	attrib.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exeDevice:binDevice.execmd.execmd.execmd.exe

description	pid	process	target process
PID 2040 wrote to memory of 1096	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	Device:bin
PID 2040 wrote to memory of 1096	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	Device:bin
PID 2040 wrote to memory of 1096	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	Device:bin
PID 2040 wrote to memory of 1096	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	Device:bin
PID 1096 wrote to memory of 1232	1096	Device:bin	vssadmin.exe
PID 1096 wrote to memory of 1232	1096	Device:bin	vssadmin.exe
PID 1096 wrote to memory of 1232	1096	Device:bin	vssadmin.exe
PID 1096 wrote to memory of 1232	1096	Device:bin	vssadmin.exe
PID 1096 wrote to memory of 1056	1096	Device:bin	takeown.exe
PID 1096 wrote to memory of 1056	1096	Device:bin	takeown.exe
PID 1096 wrote to memory of 1056	1096	Device:bin	takeown.exe
PID 1096 wrote to memory of 1056	1096	Device:bin	takeown.exe
PID 1096 wrote to memory of 1544	1096	Device:bin	icacls.exe
PID 1096 wrote to memory of 1544	1096	Device:bin	icacls.exe
PID 1096 wrote to memory of 1544	1096	Device:bin	icacls.exe
PID 1096 wrote to memory of 1544	1096	Device:bin	icacls.exe
PID 1676 wrote to memory of 1780	1676	Device.exe	cmd.exe
PID 1676 wrote to memory of 1780	1676	Device.exe	cmd.exe
PID 1676 wrote to memory of 1780	1676	Device.exe	cmd.exe
PID 1676 wrote to memory of 1780	1676	Device.exe	cmd.exe
PID 1780 wrote to memory of 1748	1780	cmd.exe	choice.exe
PID 1780 wrote to memory of 1748	1780	cmd.exe	choice.exe
PID 1780 wrote to memory of 1748	1780	cmd.exe	choice.exe
PID 1780 wrote to memory of 1748	1780	cmd.exe	choice.exe
PID 1096 wrote to memory of 1840	1096	Device:bin	cmd.exe
PID 1096 wrote to memory of 1840	1096	Device:bin	cmd.exe
PID 1096 wrote to memory of 1840	1096	Device:bin	cmd.exe
PID 1096 wrote to memory of 1840	1096	Device:bin	cmd.exe
PID 2040 wrote to memory of 1600	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	cmd.exe
PID 2040 wrote to memory of 1600	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	cmd.exe
PID 2040 wrote to memory of 1600	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	cmd.exe
PID 2040 wrote to memory of 1600	2040	0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe	cmd.exe
PID 1840 wrote to memory of 1564	1840	cmd.exe	choice.exe
PID 1840 wrote to memory of 1564	1840	cmd.exe	choice.exe
PID 1840 wrote to memory of 1564	1840	cmd.exe	choice.exe
PID 1840 wrote to memory of 1564	1840	cmd.exe	choice.exe
PID 1600 wrote to memory of 1560	1600	cmd.exe	choice.exe
PID 1600 wrote to memory of 1560	1600	cmd.exe	choice.exe
PID 1600 wrote to memory of 1560	1600	cmd.exe	choice.exe
PID 1600 wrote to memory of 1560	1600	cmd.exe	choice.exe
PID 1780 wrote to memory of 1904	1780	cmd.exe	attrib.exe
PID 1780 wrote to memory of 1904	1780	cmd.exe	attrib.exe
PID 1780 wrote to memory of 1904	1780	cmd.exe	attrib.exe
PID 1780 wrote to memory of 1904	1780	cmd.exe	attrib.exe
PID 1840 wrote to memory of 1868	1840	cmd.exe	attrib.exe
PID 1840 wrote to memory of 1868	1840	cmd.exe	attrib.exe
PID 1840 wrote to memory of 1868	1840	cmd.exe	attrib.exe
PID 1840 wrote to memory of 1868	1840	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1888	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1888	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1888	1600	cmd.exe	attrib.exe
PID 1600 wrote to memory of 1888	1600	cmd.exe	attrib.exe

Executes dropped EXE 2 IoCs

Processes:

Device:binDevice.exe

pid process

1096 Device:bin
1676 Device.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1600 cmd.exe

pid	process
1096	Device:bin
1676	Device.exe

pid	process
1600	cmd.exe

C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe
"C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:2040

C:\Users\Admin\AppData\Roaming\Device:bin
C:\Users\Admin\AppData\Roaming\Device:bin -r
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1096

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:1232

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Device.exe
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1056

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Device.exe /reset
3⤵
- Possible privilege escalation attempt
- Modifies file permissions
PID:1544

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Device" & del "C:\Users\Admin\AppData\Roaming\Device"
3⤵
- Suspicious use of WriteProcessMemory
PID:1840

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1564

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Device"
4⤵
- Views/modifies file attributes
PID:1868

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe" & del "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Deletes itself
PID:1600

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1560

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\0e061255b12ade5dc10f4ad9aeca9ebe5496d28ed251acb376c66c1d9f405821.exe"
3⤵
- Views/modifies file attributes
PID:1888

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1420

C:\Windows\SysWOW64\Device.exe
C:\Windows\SysWOW64\Device.exe -s
1⤵
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:1676

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Device.exe" & del "C:\Windows\SysWOW64\Device.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1780

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1748

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Device.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:1904