wastedlocker | 5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367

Analysis

max time kernel
75s
max time network
110s
platform
windows10_x64
resource
win10v200722
submitted
31/08/2020, 18:23

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

wastlock_1.exe
Size

1.0MB
MD5

572fea5f025df78f2d316216fbeee52e
SHA1

91b2bf44b1f9282c09f07f16631deaa3ad9d956d
SHA256

5cd04805f9753ca08b82e88c27bf5426d1d356bb26b281885573051048911367
SHA512

eb238272227c5825477ff1e37dc4f7e467665049d4db5649fff59c39d7745e88b06234d6d1218c05c802e33e21577f9d4a533cb9e23ebe6fb09654f97759c187

Score

10^/10

ransomware persistence exploit wastedlocker discovery

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
3564	Wallet:bin
500	Wallet.exe

Modifies extensions of user files 33 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\CompleteConvertTo.crw.rlhwasted_info	Wallet.exe
File created	C:\Users\Admin\Pictures\InstallUnblock.raw.rlhwasted_info	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\SavePush.raw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\ImportResolve.png.rlhwasted_info	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\ImportResolve.png.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\SavePush.raw.rlhwasted_info	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteConvertTo.crw.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\EnableSend.tif => C:\Users\Admin\Pictures\EnableSend.tif.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\EnableSend.tif.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\ImportResolve.png => C:\Users\Admin\Pictures\ImportResolve.png.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\InstallUnblock.raw => C:\Users\Admin\Pictures\InstallUnblock.raw.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\ResolveLimit.raw => C:\Users\Admin\Pictures\ResolveLimit.raw.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\ShowOpen.png.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\DismountNew.crw => C:\Users\Admin\Pictures\DismountNew.crw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\FindUnblock.tif.rlhwasted_info	Wallet.exe
File created	C:\Users\Admin\Pictures\EnableFormat.raw.rlhwasted_info	Wallet.exe
File renamed	C:\Users\Admin\Pictures\EnableFormat.raw => C:\Users\Admin\Pictures\EnableFormat.raw.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\EnableFormat.raw.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\FindUnblock.tif => C:\Users\Admin\Pictures\FindUnblock.tif.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\InstallUnblock.raw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\ResolveLimit.raw.rlhwasted_info	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\ResolveLimit.raw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\CompleteRead.raw.rlhwasted_info	Wallet.exe
File renamed	C:\Users\Admin\Pictures\CompleteRead.raw => C:\Users\Admin\Pictures\CompleteRead.raw.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\CompleteRead.raw.rlhwasted	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\DismountNew.crw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\EnableSend.tif.rlhwasted_info	Wallet.exe
File created	C:\Users\Admin\Pictures\ShowOpen.png.rlhwasted_info	Wallet.exe
File renamed	C:\Users\Admin\Pictures\ShowOpen.png => C:\Users\Admin\Pictures\ShowOpen.png.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\CompleteConvertTo.crw => C:\Users\Admin\Pictures\CompleteConvertTo.crw.rlhwasted	Wallet.exe
File created	C:\Users\Admin\Pictures\DismountNew.crw.rlhwasted_info	Wallet.exe
File opened for modification	C:\Users\Admin\Pictures\FindUnblock.tif.rlhwasted	Wallet.exe
File renamed	C:\Users\Admin\Pictures\SavePush.raw => C:\Users\Admin\Pictures\SavePush.raw.rlhwasted	Wallet.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3152	takeown.exe
3324	icacls.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3152	takeown.exe
3324	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Wallet.exe	Wallet:bin
File opened for modification	C:\Windows\SysWOW64\Wallet.exe	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\Shadow Copy Optimization 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\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

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.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
3960	vssadmin.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = cedf2c24d47fd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Wallet:bin	wastlock_1.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeShutdownPrivilege	868	svchost.exe
Token: SeCreatePagefilePrivilege	868	svchost.exe
Token: SeBackupPrivilege	3500	vssvc.exe
Token: SeRestorePrivilege	3500	vssvc.exe
Token: SeAuditPrivilege	3500	vssvc.exe

Suspicious use of WriteProcessMemory 38 IoCs

description	pid	Process	procid_target
PID 648 wrote to memory of 3564	648	wastlock_1.exe	72
PID 648 wrote to memory of 3564	648	wastlock_1.exe	72
PID 648 wrote to memory of 3564	648	wastlock_1.exe	72
PID 3564 wrote to memory of 3960	3564	Wallet:bin	75
PID 3564 wrote to memory of 3960	3564	Wallet:bin	75
PID 3564 wrote to memory of 3152	3564	Wallet:bin	79
PID 3564 wrote to memory of 3152	3564	Wallet:bin	79
PID 3564 wrote to memory of 3152	3564	Wallet:bin	79
PID 3564 wrote to memory of 3324	3564	Wallet:bin	82
PID 3564 wrote to memory of 3324	3564	Wallet:bin	82
PID 3564 wrote to memory of 3324	3564	Wallet:bin	82
PID 500 wrote to memory of 2868	500	Wallet.exe	86
PID 500 wrote to memory of 2868	500	Wallet.exe	86
PID 500 wrote to memory of 2868	500	Wallet.exe	86
PID 2868 wrote to memory of 2348	2868	cmd.exe	88
PID 2868 wrote to memory of 2348	2868	cmd.exe	88
PID 2868 wrote to memory of 2348	2868	cmd.exe	88
PID 3564 wrote to memory of 3576	3564	Wallet:bin	89
PID 3564 wrote to memory of 3576	3564	Wallet:bin	89
PID 3564 wrote to memory of 3576	3564	Wallet:bin	89
PID 648 wrote to memory of 4048	648	wastlock_1.exe	91
PID 648 wrote to memory of 4048	648	wastlock_1.exe	91
PID 648 wrote to memory of 4048	648	wastlock_1.exe	91
PID 3576 wrote to memory of 1176	3576	cmd.exe	93
PID 3576 wrote to memory of 1176	3576	cmd.exe	93
PID 3576 wrote to memory of 1176	3576	cmd.exe	93
PID 4048 wrote to memory of 2212	4048	cmd.exe	94
PID 4048 wrote to memory of 2212	4048	cmd.exe	94
PID 4048 wrote to memory of 2212	4048	cmd.exe	94
PID 2868 wrote to memory of 3024	2868	cmd.exe	96
PID 2868 wrote to memory of 3024	2868	cmd.exe	96
PID 2868 wrote to memory of 3024	2868	cmd.exe	96
PID 4048 wrote to memory of 252	4048	cmd.exe	97
PID 4048 wrote to memory of 252	4048	cmd.exe	97
PID 4048 wrote to memory of 252	4048	cmd.exe	97
PID 3576 wrote to memory of 276	3576	cmd.exe	98
PID 3576 wrote to memory of 276	3576	cmd.exe	98
PID 3576 wrote to memory of 276	3576	cmd.exe	98

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
3024	attrib.exe
252	attrib.exe
276	attrib.exe

C:\Users\Admin\AppData\Local\Temp\wastlock_1.exe
"C:\Users\Admin\AppData\Local\Temp\wastlock_1.exe"
1⤵
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:648
- C:\Users\Admin\AppData\Roaming\Wallet:bin
  C:\Users\Admin\AppData\Roaming\Wallet:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:3564
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:3960
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Wallet.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3152
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Wallet.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:3324
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Wallet" & del "C:\Users\Admin\AppData\Roaming\Wallet"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3576
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:1176
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Wallet"
      4⤵
      Views/modifies file attributes
      PID:276
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\wastlock_1.exe" & del "C:\Users\Admin\AppData\Local\Temp\wastlock_1.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4048
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2212
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\wastlock_1.exe"
    3⤵
    - Views/modifies file attributes
    PID:252

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:868

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:3500

C:\Windows\SysWOW64\Wallet.exe
C:\Windows\SysWOW64\Wallet.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:500
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Wallet.exe" & del "C:\Windows\SysWOW64\Wallet.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:2348
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Wallet.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:3024

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

Windows 7 deprecation

Loading Replay Monitor...

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads