wastedlocker | 7607e2ea902025bef5cfe4dab1fee68419de194f26a039ffaa661d407c8bc310

Analysis

max time kernel
119s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 18:21

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General

Target

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
Size

60KB
MD5

0ed2ca539a01cdb86c88a9a1604b2005
SHA1

4fed7eae00bfa21938e49f33b7c6794fd7d0750c
SHA256

bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8
SHA512

34dad101cd7c5f9ff2267674d224986b9274e0e17d9ae665ca1af4ffa57408106238b1e248045465ab17c72a4b92473ab3714aefb705d95f9725a4251379c7e2
SSDEEP

1536:HO88wNYmqdeBk7G7IhhqZKWVKz8NqUxVl2HihgOrT8avvvvvvvvvvvvvvvvvvvv:HOmhqdeBk+nc9OrTZvvvvvvvvvvvvvvX

Score

10^/10

wastedlocker discovery exploit 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
T1070.004

Inhibit System Recovery
T1490
Renames multiple (213) files with added filename extension
This suggests ransomware activity of encrypting all the files on the system.
ransomware

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
2460	takeown.exe
2492	icacls.exe

Deletes itself 1 IoCs

pid	Process
2388	cmd.exe

Executes dropped EXE 2 IoCs

pid	Process
904	Layouts:bin
2536	Layouts.exe

Loads dropped DLL 2 IoCs

pid	Process
2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2492	icacls.exe
2460	takeown.exe

Drops file in System32 directory 2 IoCs

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

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
2748	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Layouts:bin	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	2656	vssvc.exe
Token: SeRestorePrivilege	2656	vssvc.exe
Token: SeAuditPrivilege	2656	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 904	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	28
PID 2120 wrote to memory of 904	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	28
PID 2120 wrote to memory of 904	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	28
PID 2120 wrote to memory of 904	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	28
PID 904 wrote to memory of 2748	904	Layouts:bin	29
PID 904 wrote to memory of 2748	904	Layouts:bin	29
PID 904 wrote to memory of 2748	904	Layouts:bin	29
PID 904 wrote to memory of 2748	904	Layouts:bin	29
PID 904 wrote to memory of 2460	904	Layouts:bin	33
PID 904 wrote to memory of 2460	904	Layouts:bin	33
PID 904 wrote to memory of 2460	904	Layouts:bin	33
PID 904 wrote to memory of 2460	904	Layouts:bin	33
PID 904 wrote to memory of 2492	904	Layouts:bin	35
PID 904 wrote to memory of 2492	904	Layouts:bin	35
PID 904 wrote to memory of 2492	904	Layouts:bin	35
PID 904 wrote to memory of 2492	904	Layouts:bin	35
PID 2536 wrote to memory of 1632	2536	Layouts.exe	39
PID 2536 wrote to memory of 1632	2536	Layouts.exe	39
PID 2536 wrote to memory of 1632	2536	Layouts.exe	39
PID 2536 wrote to memory of 1632	2536	Layouts.exe	39
PID 1632 wrote to memory of 956	1632	cmd.exe	41
PID 1632 wrote to memory of 956	1632	cmd.exe	41
PID 1632 wrote to memory of 956	1632	cmd.exe	41
PID 1632 wrote to memory of 956	1632	cmd.exe	41
PID 904 wrote to memory of 708	904	Layouts:bin	42
PID 904 wrote to memory of 708	904	Layouts:bin	42
PID 904 wrote to memory of 708	904	Layouts:bin	42
PID 904 wrote to memory of 708	904	Layouts:bin	42
PID 2120 wrote to memory of 2388	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	44
PID 2120 wrote to memory of 2388	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	44
PID 2120 wrote to memory of 2388	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	44
PID 2120 wrote to memory of 2388	2120	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	44
PID 708 wrote to memory of 1996	708	cmd.exe	46
PID 708 wrote to memory of 1996	708	cmd.exe	46
PID 708 wrote to memory of 1996	708	cmd.exe	46
PID 708 wrote to memory of 1996	708	cmd.exe	46
PID 2388 wrote to memory of 1964	2388	cmd.exe	47
PID 2388 wrote to memory of 1964	2388	cmd.exe	47
PID 2388 wrote to memory of 1964	2388	cmd.exe	47
PID 2388 wrote to memory of 1964	2388	cmd.exe	47
PID 1632 wrote to memory of 1196	1632	cmd.exe	48
PID 1632 wrote to memory of 1196	1632	cmd.exe	48
PID 1632 wrote to memory of 1196	1632	cmd.exe	48
PID 1632 wrote to memory of 1196	1632	cmd.exe	48
PID 708 wrote to memory of 1224	708	cmd.exe	49
PID 708 wrote to memory of 1224	708	cmd.exe	49
PID 708 wrote to memory of 1224	708	cmd.exe	49
PID 708 wrote to memory of 1224	708	cmd.exe	49
PID 2388 wrote to memory of 2176	2388	cmd.exe	50
PID 2388 wrote to memory of 2176	2388	cmd.exe	50
PID 2388 wrote to memory of 2176	2388	cmd.exe	50
PID 2388 wrote to memory of 2176	2388	cmd.exe	50

Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1196	attrib.exe
1224	attrib.exe
2176	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
"C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:2120
- C:\Users\Admin\AppData\Roaming\Layouts:bin
  C:\Users\Admin\AppData\Roaming\Layouts:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:904
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:2748
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Layouts.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2460
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Layouts.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2492
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Layouts" & del "C:\Users\Admin\AppData\Roaming\Layouts"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:708
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1996
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Layouts"
      4⤵
      Views/modifies file attributes
      PID:1224
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe" & del "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2388
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1964
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
    3⤵
    - Views/modifies file attributes
    PID:2176

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2656

C:\Windows\SysWOW64\Layouts.exe
C:\Windows\SysWOW64\Layouts.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Layouts.exe" & del "C:\Windows\SysWOW64\Layouts.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1632
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:956
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Layouts.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1196

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Indicator Removal

T1070

File Deletion

T1070.004

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact