wastedlocker | 7607e2ea902025bef5cfe4dab1fee68419de194f26a039ffaa661d407c8bc310

Analysis

max time kernel
139s
max time network
115s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-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 (132) 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
3552	takeown.exe
4888	icacls.exe

Executes dropped EXE 2 IoCs

pid	Process
3600	Status:bin
4568	Status.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3552	takeown.exe
4888	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Status.exe	Status:bin
File opened for modification	C:\Windows\SysWOW64\Status.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
1404	vssadmin.exe

NTFS ADS 1 IoCs

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

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	4668	vssvc.exe
Token: SeRestorePrivilege	4668	vssvc.exe
Token: SeAuditPrivilege	4668	vssvc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 3600	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	87
PID 3988 wrote to memory of 3600	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	87
PID 3988 wrote to memory of 3600	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	87
PID 3600 wrote to memory of 1404	3600	Status:bin	88
PID 3600 wrote to memory of 1404	3600	Status:bin	88
PID 3600 wrote to memory of 3552	3600	Status:bin	94
PID 3600 wrote to memory of 3552	3600	Status:bin	94
PID 3600 wrote to memory of 3552	3600	Status:bin	94
PID 3600 wrote to memory of 4888	3600	Status:bin	96
PID 3600 wrote to memory of 4888	3600	Status:bin	96
PID 3600 wrote to memory of 4888	3600	Status:bin	96
PID 4568 wrote to memory of 3568	4568	Status.exe	99
PID 4568 wrote to memory of 3568	4568	Status.exe	99
PID 4568 wrote to memory of 3568	4568	Status.exe	99
PID 3568 wrote to memory of 3580	3568	cmd.exe	101
PID 3568 wrote to memory of 3580	3568	cmd.exe	101
PID 3568 wrote to memory of 3580	3568	cmd.exe	101
PID 3600 wrote to memory of 1496	3600	Status:bin	102
PID 3600 wrote to memory of 1496	3600	Status:bin	102
PID 3600 wrote to memory of 1496	3600	Status:bin	102
PID 3988 wrote to memory of 3788	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	104
PID 3988 wrote to memory of 3788	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	104
PID 3988 wrote to memory of 3788	3988	bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe	104
PID 1496 wrote to memory of 1308	1496	cmd.exe	106
PID 1496 wrote to memory of 1308	1496	cmd.exe	106
PID 1496 wrote to memory of 1308	1496	cmd.exe	106
PID 3788 wrote to memory of 3776	3788	cmd.exe	107
PID 3788 wrote to memory of 3776	3788	cmd.exe	107
PID 3788 wrote to memory of 3776	3788	cmd.exe	107
PID 3568 wrote to memory of 5044	3568	cmd.exe	112
PID 3568 wrote to memory of 5044	3568	cmd.exe	112
PID 3568 wrote to memory of 5044	3568	cmd.exe	112
PID 3788 wrote to memory of 4776	3788	cmd.exe	113
PID 3788 wrote to memory of 4776	3788	cmd.exe	113
PID 3788 wrote to memory of 4776	3788	cmd.exe	113
PID 1496 wrote to memory of 724	1496	cmd.exe	114
PID 1496 wrote to memory of 724	1496	cmd.exe	114
PID 1496 wrote to memory of 724	1496	cmd.exe	114

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
5044	attrib.exe
4776	attrib.exe
724	attrib.exe

C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe
"C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Users\Admin\AppData\Roaming\Status:bin
  C:\Users\Admin\AppData\Roaming\Status:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3600
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1404
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Status.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3552
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Status.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:4888
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Status" & del "C:\Users\Admin\AppData\Roaming\Status"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1496
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1308
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Status"
      4⤵
      Views/modifies file attributes
      PID:724
- 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⤵
  - Suspicious use of WriteProcessMemory
  PID:3788
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:3776
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\bcdac1a2b67e2b47f8129814dca3bcf7d55404757eb09f1c3103f57da3153ec8.exe"
    3⤵
    - Views/modifies file attributes
    PID:4776

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4668

C:\Windows\SysWOW64\Status.exe
C:\Windows\SysWOW64\Status.exe -s
1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4568
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Status.exe" & del "C:\Windows\SysWOW64\Status.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3568
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:3580
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Status.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:5044

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