wastedlocker | 8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80

Analysis

max time kernel
75s
max time network
69s
platform
windows7_x64
resource
win7
submitted
30-06-2020 15:30

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General

Target

8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe
Size

56KB
MD5

ecb00e9a61f99a7d4c90723294986bbc
SHA1

be59c867da75e2a66b8c2519e950254f817cd4ad
SHA256

8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80
SHA512

9dee79827d865de41a63962b419eed7e1f9610ff27f00f8b7b2b9f51e905d5db907d310da590d8f1a11ac88e549373edf39bffdb44d1b205728f1b5e0a43aa5e

Score

10^/10

ransomware exploit wastedlocker discovery persistence

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\DisconnectWait.lock.txt

Family

wastedlocker

Ransom Note

ENERGYSOLUTIONS YOUR NETWORK IS ENCRYPTED NOW USE [email protected] | [email protected] 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]OgLI0or/oNGGRSOB+9aWpC/1e5r9W6INar2TorUlA6ucqZD4EXqMUekxiI/JHRan hHz7Jk2Gc1AIyQtqyL/a3SWYghzWQx8GeRZAmEI0CV7k2wTnRM+y5RiDEPNdze6k uT+zfVp885mJijIbV/Vq6p52FFR6rt4gKmRqbHcUC1T5xs/zSCyMOHBKc8sIuJd4 Rm7jPEfy34XkoDDle9ejzroI2AZ5auuztvvHDHIUD8uMheDU441S79Q+E+5Xs6S5 ZFQHEw0Ha2EuqMGHHGhYoal43/CYqyn9ytfl3Ru9HMMMarM2pUwBVjktMy3H0KOU f1i3VSgAJAEUGmlUq9pafiv4yofLsMiJzYo31WUrv56ozk0uAGamPC8Gc2IRbsa1 UA/p3ZiyIVTpxHepsMnuGgOVa0NZ+oVMH4ZGFj+kziqWYjiOVnY11YPNOxq2BjN6 z+AuKXF98dSvlGGckmSbt5DmaWt8QtCdRzCiTlWxgnqf+V7uI5W4X/HWFa5tbTj4 DNYKmfSMbq46QsiKkRWfsSFDEYUNCa8qWzRE0D+OP7pjgFK9G0CzqWr+cXuDlGIv Eia7/VFeNRV4JV1yrdPjLKuy9kGahOJNbGbL4bGa1wXnhtUobvcqp+HTl4/I0Sz9 SGEoh8cCtwECFHH63XLDb3vJU5+W1zwUlXuTTfAmVlw=[end_key] KEEP IT

Emails

[email protected]

Signatures

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Backup:bin	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe

Loads dropped DLL 2 IoCs

pid	Process
900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe
900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

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
752	vssadmin.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Backup.exe	Backup:bin
File opened for modification	C:\Windows\SysWOW64\Backup.exe	attrib.exe

Opens file in notepad (likely ransom note) 1 IoCs

ransomware

pid	Process
620	NOTEPAD.EXE

Executes dropped EXE 2 IoCs

pid	Process
308	Backup:bin
1900	Backup.exe

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1980	attrib.exe
1964	attrib.exe
2024	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\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

pid	Process
1832	takeown.exe
1876	icacls.exe

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1832	takeown.exe
1876	icacls.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 308	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	24
PID 900 wrote to memory of 308	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	24
PID 900 wrote to memory of 308	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	24
PID 900 wrote to memory of 308	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	24
PID 308 wrote to memory of 752	308	Backup:bin	25
PID 308 wrote to memory of 752	308	Backup:bin	25
PID 308 wrote to memory of 752	308	Backup:bin	25
PID 308 wrote to memory of 752	308	Backup:bin	25
PID 308 wrote to memory of 1832	308	Backup:bin	29
PID 308 wrote to memory of 1832	308	Backup:bin	29
PID 308 wrote to memory of 1832	308	Backup:bin	29
PID 308 wrote to memory of 1832	308	Backup:bin	29
PID 308 wrote to memory of 1876	308	Backup:bin	31
PID 308 wrote to memory of 1876	308	Backup:bin	31
PID 308 wrote to memory of 1876	308	Backup:bin	31
PID 308 wrote to memory of 1876	308	Backup:bin	31
PID 1900 wrote to memory of 1764	1900	Backup.exe	35
PID 1900 wrote to memory of 1764	1900	Backup.exe	35
PID 1900 wrote to memory of 1764	1900	Backup.exe	35
PID 1900 wrote to memory of 1764	1900	Backup.exe	35
PID 308 wrote to memory of 1756	308	Backup:bin	36
PID 308 wrote to memory of 1756	308	Backup:bin	36
PID 308 wrote to memory of 1756	308	Backup:bin	36
PID 308 wrote to memory of 1756	308	Backup:bin	36
PID 900 wrote to memory of 1608	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	37
PID 900 wrote to memory of 1608	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	37
PID 900 wrote to memory of 1608	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	37
PID 900 wrote to memory of 1608	900	8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe	37
PID 1756 wrote to memory of 1704	1756	cmd.exe	41
PID 1756 wrote to memory of 1704	1756	cmd.exe	41
PID 1756 wrote to memory of 1704	1756	cmd.exe	41
PID 1756 wrote to memory of 1704	1756	cmd.exe	41
PID 1764 wrote to memory of 1624	1764	cmd.exe	42
PID 1764 wrote to memory of 1624	1764	cmd.exe	42
PID 1764 wrote to memory of 1624	1764	cmd.exe	42
PID 1764 wrote to memory of 1624	1764	cmd.exe	42
PID 1608 wrote to memory of 1976	1608	cmd.exe	43
PID 1608 wrote to memory of 1976	1608	cmd.exe	43
PID 1608 wrote to memory of 1976	1608	cmd.exe	43
PID 1608 wrote to memory of 1976	1608	cmd.exe	43
PID 1756 wrote to memory of 2024	1756	cmd.exe	44
PID 1756 wrote to memory of 2024	1756	cmd.exe	44
PID 1756 wrote to memory of 2024	1756	cmd.exe	44
PID 1756 wrote to memory of 2024	1756	cmd.exe	44
PID 1764 wrote to memory of 1980	1764	cmd.exe	45
PID 1764 wrote to memory of 1980	1764	cmd.exe	45
PID 1764 wrote to memory of 1980	1764	cmd.exe	45
PID 1764 wrote to memory of 1980	1764	cmd.exe	45
PID 1608 wrote to memory of 1964	1608	cmd.exe	46
PID 1608 wrote to memory of 1964	1608	cmd.exe	46
PID 1608 wrote to memory of 1964	1608	cmd.exe	46
PID 1608 wrote to memory of 1964	1608	cmd.exe	46

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1088	vssvc.exe
Token: SeRestorePrivilege	1088	vssvc.exe
Token: SeAuditPrivilege	1088	vssvc.exe

Deletes itself 1 IoCs

pid	Process
1608	cmd.exe

C:\Users\Admin\AppData\Local\Temp\8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe
"C:\Users\Admin\AppData\Local\Temp\8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe"
1⤵
- NTFS ADS
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:900
- C:\Users\Admin\AppData\Roaming\Backup:bin
  C:\Users\Admin\AppData\Roaming\Backup:bin -r
  2⤵
  - Drops file in System32 directory
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:308
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:752
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Backup.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1832
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Backup.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1876
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Backup" & del "C:\Users\Admin\AppData\Roaming\Backup"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1756
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1704
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Backup"
      4⤵
      Views/modifies file attributes
      PID:2024
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe" & del "C:\Users\Admin\AppData\Local\Temp\8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  - Deletes itself
  PID:1608
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1976
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\8897db876553f942b2eb4005f8475a232bafb82a50ca7761a621842e894a3d80.exe"
    3⤵
    - Views/modifies file attributes
    PID:1964

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1088

C:\Windows\SysWOW64\Backup.exe
C:\Windows\SysWOW64\Backup.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Backup.exe" & del "C:\Windows\SysWOW64\Backup.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1764
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1624
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Backup.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1980

C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\DisconnectWait.lock.txt
1⤵
- Opens file in notepad (likely ransom note)
PID:620

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

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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