wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

General

Target
5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
Size 1.0MB
Sample260812-pd7ghstwe1
SHA256 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
MD5 572fea5f025df78f2d316216fbeee52e
SHA1 91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA512 eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187
SSDEEP 1536:oqRaSoNRhXeFFIEuz29JfZsIzYJerU+zjqFeKUO1z1gZCHW8LiLrXz4HE7bhj5Bs:oqRa/fhGFIZyJfZsqCGez5W1Ekxj5+
TLSH
T165357C63A05CAEC4F82F56B08C880DF5A3C6BD93D9600B7731F4BFAA67B5E024716855
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

cryptone defense_evasion discovery execution exploit wastedlocker impact packer ransomware

Malware Config

Signatures

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

CryptOne packer 1 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

resource	yara_rule
behavioral2/files/0x000d00000001c537-5.dat	cryptone

Deletes shadow copies 3 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware defense_evasion impact execution

File Deletion
T1070.004

Inhibit System Recovery
T1490

Windows Management Instrumentation
T1047
Renames multiple (143) 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
364	icacls.exe
124	takeown.exe

Executes dropped EXE 2 IoCs

pid	Process
4004	Product:bin
300	Product.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
124	takeown.exe
364	icacls.exe

Drops file in System32 directory 2 IoCs

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

Executes a command shell one-liner 1 TTPs 3 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
3260	cmd.exe
4180	cmd.exe
3740	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 14 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	takeown.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	icacls.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Product.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Product:bin
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	choice.exe

Interacts with shadow copies 3 TTPs 1 IoCs

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

ransomware

File Deletion

T1070.004

Inhibit System Recovery

T1490

Direct Volume Access

T1006

pid	Process
4620	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Product:bin	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	5304	vssvc.exe
Token: SeRestorePrivilege	5304	vssvc.exe
Token: SeAuditPrivilege	5304	vssvc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3884 wrote to memory of 4004	3884	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	88
PID 4004 wrote to memory of 4620	4004	Product:bin	89
PID 4004 wrote to memory of 124	4004	Product:bin	93
PID 4004 wrote to memory of 364	4004	Product:bin	95
PID 300 wrote to memory of 3260	300	Product.exe	99
PID 3260 wrote to memory of 1708	3260	cmd.exe	101
PID 4004 wrote to memory of 4180	4004	Product:bin	103
PID 3884 wrote to memory of 3740	3884	5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe	105
PID 4180 wrote to memory of 668	4180	cmd.exe	106
PID 3740 wrote to memory of 2728	3740	cmd.exe	108
PID 3260 wrote to memory of 768	3260	cmd.exe	109
PID 4180 wrote to memory of 4492	4180	cmd.exe	110
PID 3740 wrote to memory of 2164	3740	cmd.exe	111

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

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
768	attrib.exe
4492	attrib.exe
2164	attrib.exe

C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe
"C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
1⤵
- System Location Discovery: System Language Discovery
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:3884
- C:\Users\Admin\AppData\Roaming\Product:bin
  C:\Users\Admin\AppData\Roaming\Product:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4004
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:4620
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Product.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:124
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Product.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - System Location Discovery: System Language Discovery
    PID:364
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Product" & del "C:\Users\Admin\AppData\Roaming\Product"
    3⤵
    - Executes a command shell one-liner
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4180
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      System Location Discovery: System Language Discovery
      PID:668
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Product"
      4⤵
      System Location Discovery: System Language Discovery
      Views/modifies file attributes
      PID:4492
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe" & del "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3740
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2728
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:2164

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5304

C:\Windows\SysWOW64\Product.exe
C:\Windows\SysWOW64\Product.exe -s
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:300
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Product.exe" & del "C:\Windows\SysWOW64\Product.exe"
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3260
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1708
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Product.exe"
    3⤵
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:768

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Windows Management Instrumentation

1

T1047

Persistence

Privilege Escalation

Defense Evasion

Direct Volume Access

1

T1006

File and Directory Permissions Modification

1

T1222

Hide Artifacts

1

T1564

Hidden Files and Directories

1

T1564.001

Indicator Removal

2

T1070

File Deletion

2

T1070.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

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Downloads

Product:bin

Path C:\Users\Admin\AppData\Roaming\Product:bin
Size 1.0MB
SHA256 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
MD5 572fea5f025df78f2d316216fbeee52e
SHA1 91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA512 eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187
SSDEEP 1536:oqRaSoNRhXeFFIEuz29JfZsIzYJerU+zjqFeKUO1z1gZCHW8LiLrXz4HE7bhj5Bs:oqRa/fhGFIZyJfZsqCGez5W1Ekxj5+
TLSH
T165357C63A05CAEC4F82F56B08C880DF5A3C6BD93D9600B7731F4BFAA67B5E024716855
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/300-160-0x0000000000400000-0x0000000000507000-memory.dmp

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memory/3884-0-0x0000000002270000-0x0000000002280000-memory.dmp

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memory/3884-162-0x0000000000400000-0x0000000000507000-memory.dmp

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memory/4004-161-0x0000000000400000-0x0000000000507000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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