Overview

overview

8

Static

static

3

AuditEvent...st.dll

windows10-2004-x64

1

AuditEvent...st.dll

windows11-ltsc_2024-x64

1

DdlTransac...or.dll

windows10-2004-x64

1

DdlTransac...or.dll

windows11-ltsc_2024-x64

1

Hardcodet....pf.dll

windows10-2004-x64

1

Hardcodet....pf.dll

windows11-ltsc_2024-x64

1

HidSharp.dll

windows10-2004-x64

1

HidSharp.dll

windows11-ltsc_2024-x64

1

Microsoft....es.dll

windows10-2004-x64

1

Microsoft....es.dll

windows11-ltsc_2024-x64

1

Microsoft....de.dll

windows10-2004-x64

1

Microsoft....de.dll

windows11-ltsc_2024-x64

6

Microsoft....ns.dll

windows10-2004-x64

1

Microsoft....ns.dll

windows11-ltsc_2024-x64

6

Microsoft....ns.dll

windows10-2004-x64

1

Microsoft....ns.dll

windows11-ltsc_2024-x64

1

MigraDoc.D...el.dll

windows10-2004-x64

1

MigraDoc.D...el.dll

windows11-ltsc_2024-x64

1

MigraDoc.R...pf.dll

windows10-2004-x64

1

MigraDoc.R...pf.dll

windows11-ltsc_2024-x64

1

MigraDoc.R...pf.dll

windows10-2004-x64

1

MigraDoc.R...pf.dll

windows11-ltsc_2024-x64

1

PdfSharp-wpf.dll

windows10-2004-x64

1

PdfSharp-wpf.dll

windows11-ltsc_2024-x64

1

PdfSharp.B...pf.dll

windows10-2004-x64

1

PdfSharp.B...pf.dll

windows11-ltsc_2024-x64

8

PdfSharp.C...pf.dll

windows10-2004-x64

1

PdfSharp.C...pf.dll

windows11-ltsc_2024-x64

1

PdfSharp.C...hy.dll

windows10-2004-x64

1

PdfSharp.C...hy.dll

windows11-ltsc_2024-x64

1

PdfSharp.Q...pf.dll

windows10-2004-x64

1

PdfSharp.Q...pf.dll

windows11-ltsc_2024-x64

1

Analysis

  • max time kernel
    116s
  • max time network
    158s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    25/06/2026, 12:17

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    Microsoft.Bcl.HashCode.dll
  • Size 26KB
  • Sample260625-pgcfjsbx7q
  • SHA256 3a4e851ee5fc0f6182aa5a3d65dc56fcd6979b65334b5c3b92fbdc791457c0ab
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
adwarepersistenceransomwarespyware

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

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

  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

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

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 36 IoCs
  • Suspicious use of FindShellTrayWindow 54 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 1 IoCs
  • 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
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\Microsoft.Bcl.HashCode.dll,#1
    1⤵
      PID:4532
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:828
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Enumerates connected drives
        • Checks SCSI registry key(s)
        • Modifies Internet Explorer settings
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:2568
    • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
      "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:792
    • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
      "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
      1⤵
      • Modifies registry class
      • Suspicious use of SetWindowsHookEx
      PID:1788

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 599B
          • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          prep_Activatable Class_Hermes_perf.cache
          • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
          • Size 607B
          • SHA256 8a6035e61955a71f46f06b543ed8a8d6a0cee9d0d25c267426137b9bde2cfd2b
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          memory/792-42-0x0000016103DE0000-0x0000016103E00000-memory.dmp
          Download

          memory/792-29-0x0000016103C60000-0x0000016103C80000-memory.dmp
          Download

          memory/792-64-0x0000016114280000-0x00000161142A0000-memory.dmp
          Download

          memory/792-31-0x0000016113E60000-0x0000016113F60000-memory.dmp
          Download

          memory/792-8-0x00000161001E0000-0x00000161002E0000-memory.dmp
          Download

          memory/1788-182-0x00000223CC000000-0x00000223CC691000-memory.dmp
          Download