Analysis

  • max time kernel
    169s
  • max time network
    203s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-12-2022 06:03

General

  • Target

    85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe

  • Size

    408KB

  • MD5

    d44012f6a2b41e815ee4ed8022c05cc7

  • SHA1

    56cdad1716f5ae4855cd80e4e13566d37488dc11

  • SHA256

    85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f

  • SHA512

    f331f9abf60c581936b6382606cd4d2f0cd56fd74eb125111911f9df315a5cd3793ae4ea17f73f9f0026bb090b46715bc439402c0ec84201cbf172b22aad81ae

  • SSDEEP

    12288:R7M3m1Fo3ZMtTErzAwkFtCg3RTEwLxgKGsPTK2xu8ol6sZzyUiCcvy40cShj5cIf:q3AYZIwuUi1vyvcbG

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 10 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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.

  • Suspicious use of SetThreadContext 2 IoCs
  • Modifies registry key 1 TTPs 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 35 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 40 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe
    "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1328
    • C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe
      "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe"
      2⤵
      • Writes to the Master Boot Record (MBR)
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3452
      • C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe
        "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe"
        3⤵
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4556
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:3552
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:1860
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:308
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\85e8304712a15bdd776c25cdf30672e7be37b3a96ce3e7b8f9c8df104b81804f.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:3472
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\bot.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\bot.exe:*:Enabled:Windows Messanger" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1880
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\bot.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\bot.exe:*:Enabled:Windows Messanger" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:4852
        • C:\Windows\SysWOW64\cmd.exe
          cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:1692
          • C:\Windows\SysWOW64\reg.exe
            REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
            5⤵
            • Modifies firewall policy service
            • Modifies registry key
            PID:4132

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Bootkit

1
T1067

Defense Evasion

Modify Registry

2
T1112

Replay Monitor

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Downloads

  • memory/308-149-0x0000000000000000-mapping.dmp
  • memory/1692-150-0x0000000000000000-mapping.dmp
  • memory/1860-156-0x0000000000000000-mapping.dmp
  • memory/1880-151-0x0000000000000000-mapping.dmp
  • memory/3452-135-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/3452-134-0x0000000000000000-mapping.dmp
  • memory/3452-146-0x0000000000400000-0x0000000000435000-memory.dmp
    Filesize

    212KB

  • memory/3472-152-0x0000000000000000-mapping.dmp
  • memory/3552-148-0x0000000000000000-mapping.dmp
  • memory/4132-153-0x0000000000000000-mapping.dmp
  • memory/4556-142-0x0000000000400000-0x0000000000473000-memory.dmp
    Filesize

    460KB

  • memory/4556-143-0x0000000000400000-0x0000000000473000-memory.dmp
    Filesize

    460KB

  • memory/4556-140-0x0000000000400000-0x0000000000473000-memory.dmp
    Filesize

    460KB

  • memory/4556-155-0x0000000000400000-0x0000000000473000-memory.dmp
    Filesize

    460KB

  • memory/4556-139-0x0000000000000000-mapping.dmp
  • memory/4556-157-0x0000000000400000-0x0000000000473000-memory.dmp
    Filesize

    460KB

  • memory/4852-154-0x0000000000000000-mapping.dmp