wastedlocker | 7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a

Analysis

max time kernel
21s
max time network
21s
platform
windows7_x64
resource
win7v20201028
submitted
03/11/2020, 14:19

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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
2020	Rtl:bin
1536	Rtl.exe

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\ConvertToClear.crw.rlhwasted	Rtl.exe
File created	C:\Users\Admin\Pictures\ConvertToClear.crw.rlhwasted_info	Rtl.exe
File renamed	C:\Users\Admin\Pictures\ConvertToClear.crw => C:\Users\Admin\Pictures\ConvertToClear.crw.rlhwasted	Rtl.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1448	takeown.exe
904	icacls.exe

Deletes itself 1 IoCs

pid	Process
616	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe
292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1448	takeown.exe
904	icacls.exe

Drops file in System32 directory 2 IoCs

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

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
1968	vssadmin.exe

NTFS ADS 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1832	vssvc.exe
Token: SeRestorePrivilege	1832	vssvc.exe
Token: SeAuditPrivilege	1832	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 292 wrote to memory of 2020	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	26
PID 292 wrote to memory of 2020	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	26
PID 292 wrote to memory of 2020	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	26
PID 292 wrote to memory of 2020	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	26
PID 2020 wrote to memory of 1968	2020	Rtl:bin	27
PID 2020 wrote to memory of 1968	2020	Rtl:bin	27
PID 2020 wrote to memory of 1968	2020	Rtl:bin	27
PID 2020 wrote to memory of 1968	2020	Rtl:bin	27
PID 2020 wrote to memory of 1448	2020	Rtl:bin	31
PID 2020 wrote to memory of 1448	2020	Rtl:bin	31
PID 2020 wrote to memory of 1448	2020	Rtl:bin	31
PID 2020 wrote to memory of 1448	2020	Rtl:bin	31
PID 2020 wrote to memory of 904	2020	Rtl:bin	33
PID 2020 wrote to memory of 904	2020	Rtl:bin	33
PID 2020 wrote to memory of 904	2020	Rtl:bin	33
PID 2020 wrote to memory of 904	2020	Rtl:bin	33
PID 1536 wrote to memory of 1112	1536	Rtl.exe	37
PID 1536 wrote to memory of 1112	1536	Rtl.exe	37
PID 1536 wrote to memory of 1112	1536	Rtl.exe	37
PID 1536 wrote to memory of 1112	1536	Rtl.exe	37
PID 1112 wrote to memory of 844	1112	cmd.exe	39
PID 1112 wrote to memory of 844	1112	cmd.exe	39
PID 1112 wrote to memory of 844	1112	cmd.exe	39
PID 1112 wrote to memory of 844	1112	cmd.exe	39
PID 2020 wrote to memory of 816	2020	Rtl:bin	40
PID 2020 wrote to memory of 816	2020	Rtl:bin	40
PID 2020 wrote to memory of 816	2020	Rtl:bin	40
PID 2020 wrote to memory of 816	2020	Rtl:bin	40
PID 292 wrote to memory of 616	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	42
PID 292 wrote to memory of 616	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	42
PID 292 wrote to memory of 616	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	42
PID 292 wrote to memory of 616	292	7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe	42
PID 816 wrote to memory of 948	816	cmd.exe	44
PID 816 wrote to memory of 948	816	cmd.exe	44
PID 816 wrote to memory of 948	816	cmd.exe	44
PID 816 wrote to memory of 948	816	cmd.exe	44
PID 616 wrote to memory of 1560	616	cmd.exe	45
PID 616 wrote to memory of 1560	616	cmd.exe	45
PID 616 wrote to memory of 1560	616	cmd.exe	45
PID 616 wrote to memory of 1560	616	cmd.exe	45
PID 1112 wrote to memory of 1336	1112	cmd.exe	49
PID 1112 wrote to memory of 1336	1112	cmd.exe	49
PID 1112 wrote to memory of 1336	1112	cmd.exe	49
PID 1112 wrote to memory of 1336	1112	cmd.exe	49
PID 616 wrote to memory of 1232	616	cmd.exe	50
PID 616 wrote to memory of 1232	616	cmd.exe	50
PID 616 wrote to memory of 1232	616	cmd.exe	50
PID 616 wrote to memory of 1232	616	cmd.exe	50
PID 816 wrote to memory of 1212	816	cmd.exe	51
PID 816 wrote to memory of 1212	816	cmd.exe	51
PID 816 wrote to memory of 1212	816	cmd.exe	51
PID 816 wrote to memory of 1212	816	cmd.exe	51

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1232	attrib.exe
1212	attrib.exe
1336	attrib.exe

C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe
"C:\Users\Admin\AppData\Local\Temp\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:292
- C:\Users\Admin\AppData\Roaming\Rtl:bin
  C:\Users\Admin\AppData\Roaming\Rtl:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:2020
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1968
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Rtl.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1448
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Rtl.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:904
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Rtl" & del "C:\Users\Admin\AppData\Roaming\Rtl"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:816
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:948
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Rtl"
      4⤵
      Views/modifies file attributes
      PID:1212
- 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⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:616
- - 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\7a45a4ae68992e5be784b4a6da7acd98dc28281fe238f22c1f7c1d85a90d144a.bin.exe"
    3⤵
    - Views/modifies file attributes
    PID:1232

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:1832

C:\Windows\SysWOW64\Rtl.exe
C:\Windows\SysWOW64\Rtl.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:1536
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Rtl.exe" & del "C:\Windows\SysWOW64\Rtl.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1112
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:844
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Rtl.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1336

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

Replay Monitor

Loading Replay Monitor...

Downloads