wastedlocker | 887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d

General

Target

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe
Size

1.1MB
MD5

6b20ef8fb494cc6e455220356de298d0
SHA1

763d356d30e81d1cd15f6bc6a31f96181edb0b8f
SHA256

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d
SHA512

ef53b73a911a608439bf929fa66a66fbf015ed274735b91c1d3b08128b14d6514d5514157e541441b9de0827d068c8f514cfd24a3a52fecb2d09764c4fb3311a

Score

10^/10

ransomware persistence discovery exploit wastedlocker

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\FormatRequest.wmf.txt

Family

wastedlocker

Ransom Note

BBA Aviation YOUR NETWORK IS ENCRYPTED NOW USE 91645@PROTONMAIL.CH | 61258@ECLIPSO.CH TO GET THE PRICE FOR YOUR DATA DO NOT GIVE THIS EMAIL TO 3RD PARTIES DO NOT RENAME OR MOVE THE FILE THE FILE IS ENCRYPTED WITH THE FOLLOWING KEY: [begin_key]WKBc2Jtdg8eBI/92fL/IcPyqpDM7ZDUc33WEuLWmgvRvVI6UxpLLmGmm3dugkY+5 o8HXYQTrx1hU/ykMLg4c6ADFH52C4PKXH5o3EU22KJ57hlBKNrj+2gRQ1/uBlTZ2 r/dxlWPf7259NdgB+Br8duD4FJfiDHMt/GnPm9QhZ7KSpEEkNpV6CDaIXHrpNqEr UjfUCIsgVxa4n/5tYCUevauT/OUoHxV+/7EcMfeCeJNXVAnUUMRUV/e0OJ64EAbR OqyJGEPrkS931iaM4WyaPw0Y9npSmutrDTen6q1gFbyLZ5PMaKRzhm/4jMezAARn xfelKR9X8ZnkKwkDHNP0UaFTZfQwl2QyurZFGfGqKI9XybvasI8xRelalr50AFfU SR1/2Dqv3LEPBtaF3Jds460kbKMcH3waZvMznhmGyG348iHcRLP1gdOB2Iaft9fv Ih+uvcWEhth/i55tAamSQoBvrqFYc/jQ2p4haJ7GoHTSrIzYhOzeo0h+YllDpb4N eT81GOaHA3HUMTnlI/D1Wl83sMrDS7rY1JabPlwjuvq+65gbjSqoU/N5WyGQOKdQ cl0rUx7Qp/K3EEeqOlgpuXXsAOsEZBban5DKcR/VVOe1fSkAyZKT12YDkI53lgmU 75DOmD3bO1CQhr2stOcMB5oGesqsXLiboQ/UYCBsyZV=[end_key] KEEP IT

Emails

91645@PROTONMAIL.CH

61258@ECLIPSO.CH

Signatures

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

3876 vssadmin.exe
WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker
Drops file in System32 directory 2 IoCs

Processes:

Hal:binattrib.exe

description ioc process

File opened for modification C:\Windows\SysWOW64\Hal.exe Hal:bin
File opened for modification C:\Windows\SysWOW64\Hal.exe attrib.exe
Opens file in notepad (likely ransom note) 1 IoCs
ransomware

Processes:

NOTEPAD.EXE

pid process

2088 NOTEPAD.EXE

pid	process
3876	vssadmin.exe

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

pid	process
2088	NOTEPAD.EXE

NTFS ADS 1 IoCs

Processes:

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Hal:bin	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.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\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

Modifies file permissions 1 TTPs 2 IoCs
discovery

File Permissions Modification
T1222

Processes:

icacls.exetakeown.exe

pid process

740 icacls.exe
3496 takeown.exe
Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490
Possible privilege escalation attempt 2 IoCs
exploit

Processes:

takeown.exeicacls.exe

pid process

3496 takeown.exe
740 icacls.exe
Views/modifies file attributes 1 TTPs 3 IoCs
evasion

Hidden Files and Directories
T1158

Processes:

attrib.exeattrib.exeattrib.exe

pid process

3308 attrib.exe
3496 attrib.exe
3876 attrib.exe

pid	process
740	icacls.exe
3496	takeown.exe

pid	process
3496	takeown.exe
740	icacls.exe

pid	process
3308	attrib.exe
3496	attrib.exe
3876	attrib.exe

Suspicious use of WriteProcessMemory 38 IoCs

Processes:

887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exeHal:binHal.execmd.execmd.execmd.exe

description	pid	process	target process
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	Hal:bin
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	Hal:bin
PID 3932 wrote to memory of 3992	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	Hal:bin
PID 3992 wrote to memory of 3876	3992	Hal:bin	vssadmin.exe
PID 3992 wrote to memory of 3876	3992	Hal:bin	vssadmin.exe
PID 3992 wrote to memory of 3496	3992	Hal:bin	takeown.exe
PID 3992 wrote to memory of 3496	3992	Hal:bin	takeown.exe
PID 3992 wrote to memory of 3496	3992	Hal:bin	takeown.exe
PID 3992 wrote to memory of 740	3992	Hal:bin	icacls.exe
PID 3992 wrote to memory of 740	3992	Hal:bin	icacls.exe
PID 3992 wrote to memory of 740	3992	Hal:bin	icacls.exe
PID 688 wrote to memory of 2524	688	Hal.exe	cmd.exe
PID 688 wrote to memory of 2524	688	Hal.exe	cmd.exe
PID 688 wrote to memory of 2524	688	Hal.exe	cmd.exe
PID 2524 wrote to memory of 2184	2524	cmd.exe	choice.exe
PID 2524 wrote to memory of 2184	2524	cmd.exe	choice.exe
PID 2524 wrote to memory of 2184	2524	cmd.exe	choice.exe
PID 3992 wrote to memory of 1540	3992	Hal:bin	cmd.exe
PID 3992 wrote to memory of 1540	3992	Hal:bin	cmd.exe
PID 3992 wrote to memory of 1540	3992	Hal:bin	cmd.exe
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	cmd.exe
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	cmd.exe
PID 3932 wrote to memory of 2388	3932	887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe	cmd.exe
PID 1540 wrote to memory of 3872	1540	cmd.exe	choice.exe
PID 1540 wrote to memory of 3872	1540	cmd.exe	choice.exe
PID 1540 wrote to memory of 3872	1540	cmd.exe	choice.exe
PID 2388 wrote to memory of 3300	2388	cmd.exe	choice.exe
PID 2388 wrote to memory of 3300	2388	cmd.exe	choice.exe
PID 2388 wrote to memory of 3300	2388	cmd.exe	choice.exe
PID 2524 wrote to memory of 3876	2524	cmd.exe	attrib.exe
PID 2524 wrote to memory of 3876	2524	cmd.exe	attrib.exe
PID 2524 wrote to memory of 3876	2524	cmd.exe	attrib.exe
PID 1540 wrote to memory of 3308	1540	cmd.exe	attrib.exe
PID 1540 wrote to memory of 3308	1540	cmd.exe	attrib.exe
PID 1540 wrote to memory of 3308	1540	cmd.exe	attrib.exe
PID 2388 wrote to memory of 3496	2388	cmd.exe	attrib.exe
PID 2388 wrote to memory of 3496	2388	cmd.exe	attrib.exe
PID 2388 wrote to memory of 3496	2388	cmd.exe	attrib.exe

Executes dropped EXE 2 IoCs

Processes:

Hal:binHal.exe

pid process

3992 Hal:bin
688 Hal.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 3956 vssvc.exe
Token: SeRestorePrivilege 3956 vssvc.exe
Token: SeAuditPrivilege 3956 vssvc.exe

pid	process
3992	Hal:bin
688	Hal.exe

description	pid	process
Token: SeBackupPrivilege	3956	vssvc.exe
Token: SeRestorePrivilege	3956	vssvc.exe
Token: SeAuditPrivilege	3956	vssvc.exe

C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe
"C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3932

C:\Users\Admin\AppData\Roaming\Hal:bin
C:\Users\Admin\AppData\Roaming\Hal:bin -r
2⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:3992

C:\Windows\system32\vssadmin.exe
C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
3⤵
- Interacts with shadow copies
PID:3876

C:\Windows\SysWOW64\takeown.exe
C:\Windows\system32\takeown.exe /F C:\Windows\system32\Hal.exe
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:3496

C:\Windows\SysWOW64\icacls.exe
C:\Windows\system32\icacls.exe C:\Windows\system32\Hal.exe /reset
3⤵
- Modifies file permissions
- Possible privilege escalation attempt
PID:740

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Hal" & del "C:\Users\Admin\AppData\Roaming\Hal"
3⤵
- Suspicious use of WriteProcessMemory
PID:1540

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
4⤵
PID:3872

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Roaming\Hal"
4⤵
- Views/modifies file attributes
PID:3308

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe" & del "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2388

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:3300

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Users\Admin\AppData\Local\Temp\887aac61771af200f7e58bf0d02cb96d9befa11deda4e448f0a700ccb186ce9d.exe"
3⤵
- Views/modifies file attributes
PID:3496

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:3956

C:\Windows\SysWOW64\Hal.exe
C:\Windows\SysWOW64\Hal.exe -s
1⤵
- Suspicious use of WriteProcessMemory
- Executes dropped EXE
PID:688

C:\Windows\SysWOW64\cmd.exe
cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Hal.exe" & del "C:\Windows\SysWOW64\Hal.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2524

C:\Windows\SysWOW64\choice.exe
choice /t 10 /d y
3⤵
PID:2184

C:\Windows\SysWOW64\attrib.exe
attrib -h "C:\Windows\SysWOW64\Hal.exe"
3⤵
- Drops file in System32 directory
- Views/modifies file attributes
PID:3876

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\FormatRequest.wmf.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:2088