wastedlocker | 905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a

General

Target

2cc4534b0dd0e1c8d5b89644274a10c1.exe
Size

1.2MB
MD5

2cc4534b0dd0e1c8d5b89644274a10c1
SHA1

735ee2c15c0b7172f65d39f0fd33b9186ee69653
SHA256

905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a
SHA512

a842b2d171aa6efa1b391d5d0f84663e78021b485555e2bf10a5e589d8652057f5abbd88e1a5ec628b714692ec5d63c3172894aa7846d5897e87d99dad67e2b8

Score

10^/10

ransomware persistence wastedlocker discovery exploit

Malware Config

Signatures

Executes dropped EXE 2 IoCs

Processes:

Remote:binRemote.exe

pid process

1084 Remote:bin
1828 Remote.exe
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
NTFS ADS 1 IoCs

Processes:

2cc4534b0dd0e1c8d5b89644274a10c1.exe

description ioc process

File opened for modification C:\Users\Admin\AppData\Roaming\Remote:bin 2cc4534b0dd0e1c8d5b89644274a10c1.exe
Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

takeown.exeicacls.exe

pid process

1104 takeown.exe
1512 icacls.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1452 vssvc.exe
Token: SeRestorePrivilege 1452 vssvc.exe
Token: SeAuditPrivilege 1452 vssvc.exe
WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker
Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

1104 takeown.exe
1512 icacls.exe
Loads dropped DLL 2 IoCs

Processes:

2cc4534b0dd0e1c8d5b89644274a10c1.exe

pid process

1072 2cc4534b0dd0e1c8d5b89644274a10c1.exe
1072 2cc4534b0dd0e1c8d5b89644274a10c1.exe

pid	process
1084	Remote:bin
1828	Remote.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Remote:bin	2cc4534b0dd0e1c8d5b89644274a10c1.exe

pid	process
1104	takeown.exe
1512	icacls.exe

description	pid	process
Token: SeBackupPrivilege	1452	vssvc.exe
Token: SeRestorePrivilege	1452	vssvc.exe
Token: SeAuditPrivilege	1452	vssvc.exe

pid	process
1104	takeown.exe
1512	icacls.exe

pid	process
1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe
1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe

Suspicious use of WriteProcessMemory 52 IoCs

Processes:

2cc4534b0dd0e1c8d5b89644274a10c1.exeRemote:binRemote.execmd.execmd.execmd.exe

description	pid	process	target process
PID 1072 wrote to memory of 1084	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	Remote:bin
PID 1072 wrote to memory of 1084	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	Remote:bin
PID 1072 wrote to memory of 1084	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	Remote:bin
PID 1072 wrote to memory of 1084	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	Remote:bin
PID 1084 wrote to memory of 612	1084	Remote:bin	vssadmin.exe
PID 1084 wrote to memory of 612	1084	Remote:bin	vssadmin.exe
PID 1084 wrote to memory of 612	1084	Remote:bin	vssadmin.exe
PID 1084 wrote to memory of 612	1084	Remote:bin	vssadmin.exe
PID 1084 wrote to memory of 1104	1084	Remote:bin	takeown.exe
PID 1084 wrote to memory of 1104	1084	Remote:bin	takeown.exe
PID 1084 wrote to memory of 1104	1084	Remote:bin	takeown.exe
PID 1084 wrote to memory of 1104	1084	Remote:bin	takeown.exe
PID 1084 wrote to memory of 1512	1084	Remote:bin	icacls.exe
PID 1084 wrote to memory of 1512	1084	Remote:bin	icacls.exe
PID 1084 wrote to memory of 1512	1084	Remote:bin	icacls.exe
PID 1084 wrote to memory of 1512	1084	Remote:bin	icacls.exe
PID 1828 wrote to memory of 1856	1828	Remote.exe	cmd.exe
PID 1828 wrote to memory of 1856	1828	Remote.exe	cmd.exe
PID 1828 wrote to memory of 1856	1828	Remote.exe	cmd.exe
PID 1828 wrote to memory of 1856	1828	Remote.exe	cmd.exe
PID 1856 wrote to memory of 1608	1856	cmd.exe	choice.exe
PID 1856 wrote to memory of 1608	1856	cmd.exe	choice.exe
PID 1856 wrote to memory of 1608	1856	cmd.exe	choice.exe
PID 1856 wrote to memory of 1608	1856	cmd.exe	choice.exe
PID 1084 wrote to memory of 1664	1084	Remote:bin	cmd.exe
PID 1084 wrote to memory of 1664	1084	Remote:bin	cmd.exe
PID 1084 wrote to memory of 1664	1084	Remote:bin	cmd.exe
PID 1084 wrote to memory of 1664	1084	Remote:bin	cmd.exe
PID 1072 wrote to memory of 1576	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 1072 wrote to memory of 1576	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 1072 wrote to memory of 1576	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 1072 wrote to memory of 1576	1072	2cc4534b0dd0e1c8d5b89644274a10c1.exe	cmd.exe
PID 1664 wrote to memory of 1876	1664	cmd.exe	choice.exe
PID 1664 wrote to memory of 1876	1664	cmd.exe	choice.exe
PID 1664 wrote to memory of 1876	1664	cmd.exe	choice.exe
PID 1664 wrote to memory of 1876	1664	cmd.exe	choice.exe
PID 1576 wrote to memory of 1884	1576	cmd.exe	choice.exe
PID 1576 wrote to memory of 1884	1576	cmd.exe	choice.exe
PID 1576 wrote to memory of 1884	1576	cmd.exe	choice.exe
PID 1576 wrote to memory of 1884	1576	cmd.exe	choice.exe
PID 1856 wrote to memory of 1964	1856	cmd.exe	attrib.exe
PID 1856 wrote to memory of 1964	1856	cmd.exe	attrib.exe
PID 1856 wrote to memory of 1964	1856	cmd.exe	attrib.exe
PID 1856 wrote to memory of 1964	1856	cmd.exe	attrib.exe
PID 1664 wrote to memory of 1940	1664	cmd.exe	attrib.exe
PID 1664 wrote to memory of 1940	1664	cmd.exe	attrib.exe
PID 1664 wrote to memory of 1940	1664	cmd.exe	attrib.exe
PID 1664 wrote to memory of 1940	1664	cmd.exe	attrib.exe
PID 1576 wrote to memory of 1952	1576	cmd.exe	attrib.exe
PID 1576 wrote to memory of 1952	1576	cmd.exe	attrib.exe
PID 1576 wrote to memory of 1952	1576	cmd.exe	attrib.exe
PID 1576 wrote to memory of 1952	1576	cmd.exe	attrib.exe

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\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\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

Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

1964 attrib.exe
1940 attrib.exe
1952 attrib.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

612 vssadmin.exe
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1576 cmd.exe

pid	process
1964	attrib.exe
1940	attrib.exe
1952	attrib.exe

pid	process
612	vssadmin.exe

pid	process
1576	cmd.exe

Modifies extensions of user files 15 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

Processes:

Remote.exe

description	ioc	process
File renamed	C:\Users\Admin\Pictures\ResumeAssert.crw => C:\Users\Admin\Pictures\ResumeAssert.crw.garminwasted	Remote.exe
File opened for modification	C:\Users\Admin\Pictures\EditExpand.png.garminwasted	Remote.exe
File opened for modification	C:\Users\Admin\Pictures\InvokeConvert.tiff.garminwasted	Remote.exe
File created	C:\Users\Admin\Pictures\ResumeAssert.crw.garminwasted_info	Remote.exe
File created	C:\Users\Admin\Pictures\SwitchImport.png.garminwasted_info	Remote.exe
File created	C:\Users\Admin\Pictures\EditExpand.png.garminwasted_info	Remote.exe
File renamed	C:\Users\Admin\Pictures\InvokeConvert.tiff => C:\Users\Admin\Pictures\InvokeConvert.tiff.garminwasted	Remote.exe
File opened for modification	C:\Users\Admin\Pictures\SwitchImport.png.garminwasted	Remote.exe
File renamed	C:\Users\Admin\Pictures\EditExpand.png => C:\Users\Admin\Pictures\EditExpand.png.garminwasted	Remote.exe
File opened for modification	C:\Users\Admin\Pictures\ResumeAssert.crw.garminwasted	Remote.exe
File opened for modification	C:\Users\Admin\Pictures\DisableInitialize.crw.garminwasted	Remote.exe
File created	C:\Users\Admin\Pictures\InvokeConvert.tiff.garminwasted_info	Remote.exe
File renamed	C:\Users\Admin\Pictures\SwitchImport.png => C:\Users\Admin\Pictures\SwitchImport.png.garminwasted	Remote.exe
File created	C:\Users\Admin\Pictures\DisableInitialize.crw.garminwasted_info	Remote.exe
File renamed	C:\Users\Admin\Pictures\DisableInitialize.crw => C:\Users\Admin\Pictures\DisableInitialize.crw.garminwasted	Remote.exe

Drops file in System32 directory 2 IoCs

Processes:

Remote:binattrib.exe

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

C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe
"C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
1⤵
- NTFS ADS
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1072

C:\Users\Admin\AppData\Roaming\Remote:bin
C:\Users\Admin\AppData\Roaming\Remote:bin -r
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
- Drops file in System32 directory
PID:1084

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:612

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Remote.exe
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1104

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Remote.exe /reset
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:1512

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Remote" & del "C:\Users\Admin\AppData\Roaming\Remote"
3⤵
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:1876

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Remote"
4⤵
- Views/modifies file attributes
PID:1940

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe" & del "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
2⤵
- Suspicious use of WriteProcessMemory
- Deletes itself
PID:1576

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1884

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\2cc4534b0dd0e1c8d5b89644274a10c1.exe"
3⤵
- Views/modifies file attributes
PID:1952

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
- Modifies service
PID:1452

C:\Windows\SysWOW64\Remote.exe
C:\Windows\SysWOW64\Remote.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
- Modifies extensions of user files
PID:1828

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Remote.exe" & del "C:\Windows\SysWOW64\Remote.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1856

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:1608

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Remote.exe"
3⤵
- Views/modifies file attributes
- Drops file in System32 directory
PID:1964