Overview

overview

8

Static

static

3

340ce41fc4...ce.exe

windows7-x64

7

340ce41fc4...ce.exe

windows10-2004-x64

8

Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/11/2024, 21:36

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General

  • Target
    340ce41fc44b9c9ec8f16b21f73ee79b79b75f7020710302a269696f52e14ece.exe
  • Size 839KB
  • Sample241107-1f2vlaygnf
  • SHA256 340ce41fc44b9c9ec8f16b21f73ee79b79b75f7020710302a269696f52e14ece
  • MD5 SHA1 SHA512 SSDEEP
Score
8/10
bootkitdiscoverypersistence

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 5 IoCs

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

    persistence
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 29 IoCs

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

  • 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.

    bootkitpersistence
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

    discovery
  • Checks SCSI registry key(s) 3 TTPs 64 IoCs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 4 IoCs
    adwarespyware
  • Modifies data under HKEY_USERS 64 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 10 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:\Users\Admin\AppData\Local\Temp\340ce41fc44b9c9ec8f16b21f73ee79b79b75f7020710302a269696f52e14ece.exe
    "C:\Users\Admin\AppData\Local\Temp\340ce41fc44b9c9ec8f16b21f73ee79b79b75f7020710302a269696f52e14ece.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Writes to the Master Boot Record (MBR)
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of SetWindowsHookEx
    PID:4692
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    PID:2472
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:4748
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2356
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:908
  • C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe
    "C:\Program Files\Common Files\Microsoft Shared\ClickToRun\OfficeClickToRun.exe" /service
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Modifies data under HKEY_USERS
    • Suspicious use of SetWindowsHookEx
    PID:1432
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Modifies registry class
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:3408
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4788
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
      PID:3508
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4140
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Boot or Logon Autostart Execution: Active Setup
        • Modifies registry class
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SendNotifyMessage
        PID:2148
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:4444
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
        • Modifies registry class
        PID:1256
    • C:\Windows\explorer.exe
      explorer.exe
      1⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SendNotifyMessage
      PID:4720
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe /factory,{682159d9-c321-47ca-b3f1-30e36b2ec8b9} -Embedding
      1⤵
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: AddClipboardFormatListener
      • Suspicious use of SetWindowsHookEx
      PID:2180
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {9BA05972-F6A8-11CF-A442-00A0C90A8F39} -Embedding
      1⤵
        PID:1404
      • C:\Windows\system32\sihost.exe
        sihost.exe
        1⤵
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4392
        • C:\Windows\explorer.exe
          explorer.exe /LOADSAVEDWINDOWS
          2⤵
          • Boot or Logon Autostart Execution: Active Setup
          • Enumerates connected drives
          • Checks SCSI registry key(s)
          • Modifies registry class
          • Suspicious use of SetWindowsHookEx
          PID:4240
      • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
        "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
        1⤵
          PID:1592

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

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              Downloads

              E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04
              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04
              • Size 471B
              • SHA256 e9fb19d6fec5ad7ef921ebf098328042a1dfc8dbdc725a253bbb340a66fae59e
              • MD5 SHA1 SHA512
              Submit Download

              E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04
              • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\E2C6CBAF0AF08CF203BA74BF0D0AB6D5_CBDCCBFE4F7A916411C1E69BDD97BB04
              • Size 412B
              • SHA256 ffce81ce86953739add2ab411b4accab3e1828c06161a2c58968ae70341a4a95
              • MD5 SHA1 SHA512
              Submit Download

              IconCache.db
              • Path C:\Users\Admin\AppData\Local\IconCache.db
              • Size 15KB
              • SHA256 15ac965ed75909084c60fc6f8ddcc097c87957298bb0874a398f63ccf2ca91ea
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              DiscoverCacheData.dat
              • Path C:\Users\Admin\AppData\Local\Microsoft\PenWorkspace\DiscoverCacheData.dat
              • Size 1022B
              • SHA256 63141271cfac3101c99543b052bbc5e02e1bf0a311e2548b4652315f4221f8c0
              • MD5 SHA1 SHA512
              Submit Download

              {23FD563A-8EF3-4E4C-9F33-6C3E1DDBEDCF}.png
              • Path C:\Users\Admin\AppData\Local\Temp\{23FD563A-8EF3-4E4C-9F33-6C3E1DDBEDCF}.png
              • Size 6KB
              • SHA256 8c98c856e4d43f705ff9a5c9a55f92e1885765654912b4c75385c3ea2fdef4a7
              • MD5 SHA1 SHA512 SSDEEP
              Submit Download

              memory/908-11-0x0000000002A20000-0x0000000002A21000-memory.dmp
              Download

              memory/4240-33-0x0000000003720000-0x0000000003721000-memory.dmp
              Download

              memory/4692-24-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-1-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-5-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-66-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-18-0x00000000009EB000-0x00000000009EC000-memory.dmp
              Download

              memory/4692-19-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-25-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-0-0x0000000002C90000-0x0000000002C9A000-memory.dmp
              Download

              memory/4692-4-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-3-0x00000000009EB000-0x00000000009EC000-memory.dmp
              Download

              memory/4692-35-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-13-0x0000000002C90000-0x0000000002C9A000-memory.dmp
              Download

              memory/4692-42-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-49-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-50-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-51-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-52-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-58-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-59-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-60-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-63-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-64-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4692-65-0x0000000000400000-0x0000000000AF2000-memory.dmp
              Download

              memory/4788-17-0x0000000002EE0000-0x0000000002EE1000-memory.dmp
              Download