Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    24-12-2024 01:15

General

  • Target

    890a02f4e0c8bc09cfad53b688ad04016d8c78e94514e69684323598aabd6361.exe

  • Size

    933KB

  • MD5

    46418e78f2b8d6b8ff8069610f499921

  • SHA1

    529fbc61339cf988b2d98a25a30bc548019c0125

  • SHA256

    890a02f4e0c8bc09cfad53b688ad04016d8c78e94514e69684323598aabd6361

  • SHA512

    1b1d97a413b0f2de21d056aac047c2f279a5b3c7314513a4f983262fb03eede5f065aaa2d02943b964dd9c4306db5f84a50889a280c6c2da97a94359a224ef69

  • SSDEEP

    24576:yRP4MROxnFKj3wyv/rrcI0AilFEvxHPUooS:yyMi4TwurrcI0AilFEvxHP

Malware Config

Extracted

Family

orcus

Botnet

vgbn

C2

192.168.0.104:10134

Mutex

2efe898857ff456fbb532c7b6f2f16cb

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    true

  • install_path

    %programfiles%\Windows\xcvbhdf.exe

  • reconnect_delay

    10000

  • registry_keyname

    xcvbhdf.exe

  • taskscheduler_taskname

    xcvbhdf.exe

  • watchdog_path

    AppData\asdfasdfasdf.exe

Signatures

  • Contains code to disable Windows Defender 1 IoCs

    A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

  • Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
  • Orcus

    Orcus is a Remote Access Trojan that is being sold on underground forums.

  • Orcus family
  • Orcus main payload 1 IoCs
  • UAC bypass 3 TTPs 6 IoCs
  • Orcurs Rat Executable 3 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 3 IoCs
  • Windows security modification 2 TTPs 3 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Hijack Execution Flow: Executable Installer File Permissions Weakness 1 TTPs 2 IoCs

    Possible Turn off User Account Control's privilege elevation for standard users.

  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 28 IoCs
  • System policy modification 1 TTPs 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\890a02f4e0c8bc09cfad53b688ad04016d8c78e94514e69684323598aabd6361.exe
    "C:\Users\Admin\AppData\Local\Temp\890a02f4e0c8bc09cfad53b688ad04016d8c78e94514e69684323598aabd6361.exe"
    1⤵
    • Modifies Windows Defender Real-time Protection settings
    • UAC bypass
    • Loads dropped DLL
    • Windows security modification
    • Checks whether UAC is enabled
    • Hijack Execution Flow: Executable Installer File Permissions Weakness
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:2328
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2816
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell" Get-MpPreference -verbose
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1084
    • C:\Program Files (x86)\Windows\xcvbhdf.exe
      "C:\Program Files (x86)\Windows\xcvbhdf.exe"
      2⤵
      • Modifies Windows Defender Real-time Protection settings
      • UAC bypass
      • Executes dropped EXE
      • Loads dropped DLL
      • Windows security modification
      • Checks whether UAC is enabled
      • Hijack Execution Flow: Executable Installer File Permissions Weakness
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:1560
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "powershell" Get-MpPreference -verbose
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2512
      • C:\Users\Admin\AppData\Roaming\asdfasdfasdf.exe
        "C:\Users\Admin\AppData\Roaming\asdfasdfasdf.exe" /launchSelfAndExit "C:\Program Files (x86)\Windows\xcvbhdf.exe" 1560 /protectFile
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2504
        • C:\Users\Admin\AppData\Roaming\asdfasdfasdf.exe
          "C:\Users\Admin\AppData\Roaming\asdfasdfasdf.exe" /watchProcess "C:\Program Files (x86)\Windows\xcvbhdf.exe" 1560 "/protectFile"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:1048
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:1824
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {7E71FE41-65A1-4347-B608-431DA0E998A5} S-1-5-21-2703099537-420551529-3771253338-1000:XECUDNCD\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1304
    • C:\Program Files (x86)\Windows\xcvbhdf.exe
      "C:\Program Files (x86)\Windows\xcvbhdf.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      PID:2888

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Windows\xcvbhdf.exe

    Filesize

    933KB

    MD5

    46418e78f2b8d6b8ff8069610f499921

    SHA1

    529fbc61339cf988b2d98a25a30bc548019c0125

    SHA256

    890a02f4e0c8bc09cfad53b688ad04016d8c78e94514e69684323598aabd6361

    SHA512

    1b1d97a413b0f2de21d056aac047c2f279a5b3c7314513a4f983262fb03eede5f065aaa2d02943b964dd9c4306db5f84a50889a280c6c2da97a94359a224ef69

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

    Filesize

    7KB

    MD5

    1cbb7f0723acc3e82c948ee0ee512450

    SHA1

    792e7c34748f5943604a8860470f49af00207008

    SHA256

    0430f4c423eae1ced098e525b97e13d359caf7a98b807231c9246e34a6328de9

    SHA512

    c0498ab16d5b8db020c8cbe3581ec9f93be8196921c0abf4246479d6aa1821313ab3c663aa3e294f9971aeacdb774aa2c17c65f38efa09a9e5274dd7d4ca04d1

  • C:\Users\Admin\AppData\Roaming\asdfasdfasdf.exe

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Users\Admin\AppData\Roaming\yjfgfghjfg\err_2efe898857ff456fbb532c7b6f2f16cb.dat

    Filesize

    1KB

    MD5

    1848652edee10780cb55460facc52854

    SHA1

    3e6227ad3972c39f6634d7f2519a70a2fad3088d

    SHA256

    60ae0508f1cec87831aa4fa0cf0609551821dcbf15354104aca588c1a2d5b4f4

    SHA512

    451117cd617444a80c5c157027c1714c160ce9a45eed3257b1827a7f4a17698da243edaffcc836fa4b7db614d673f550130fdba908c423292d6bfeeb46d36407

  • C:\Windows\SysWOW64\WindowsInput.exe.config

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • \Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e6fcf516d8ed8d0d4427f86e08d0d435

    SHA1

    c7691731583ab7890086635cb7f3e4c22ca5e409

    SHA256

    8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

    SHA512

    c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

  • memory/1560-47-0x0000000004E10000-0x0000000004E20000-memory.dmp

    Filesize

    64KB

  • memory/1560-46-0x00000000024A0000-0x00000000024B8000-memory.dmp

    Filesize

    96KB

  • memory/1560-45-0x0000000004CD0000-0x0000000004D1E000-memory.dmp

    Filesize

    312KB

  • memory/1560-42-0x0000000000560000-0x0000000000572000-memory.dmp

    Filesize

    72KB

  • memory/1560-41-0x0000000000AE0000-0x0000000000BD0000-memory.dmp

    Filesize

    960KB

  • memory/2328-40-0x0000000074440000-0x0000000074B2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2328-5-0x00000000004C0000-0x00000000004D2000-memory.dmp

    Filesize

    72KB

  • memory/2328-1-0x0000000000EA0000-0x0000000000F90000-memory.dmp

    Filesize

    960KB

  • memory/2328-2-0x0000000000470000-0x000000000047E000-memory.dmp

    Filesize

    56KB

  • memory/2328-3-0x0000000074440000-0x0000000074B2E000-memory.dmp

    Filesize

    6.9MB

  • memory/2328-9-0x0000000000680000-0x0000000000688000-memory.dmp

    Filesize

    32KB

  • memory/2328-8-0x0000000000510000-0x000000000051A000-memory.dmp

    Filesize

    40KB

  • memory/2328-0-0x000000007444E000-0x000000007444F000-memory.dmp

    Filesize

    4KB

  • memory/2328-7-0x0000000000500000-0x0000000000508000-memory.dmp

    Filesize

    32KB

  • memory/2328-6-0x00000000004F0000-0x00000000004F8000-memory.dmp

    Filesize

    32KB

  • memory/2328-4-0x00000000009F0000-0x0000000000A4C000-memory.dmp

    Filesize

    368KB

  • memory/2504-64-0x00000000011B0000-0x00000000011B8000-memory.dmp

    Filesize

    32KB

  • memory/2816-18-0x000007FEF5AF3000-0x000007FEF5AF4000-memory.dmp

    Filesize

    4KB

  • memory/2816-24-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2816-21-0x000007FEF5AF0000-0x000007FEF64DC000-memory.dmp

    Filesize

    9.9MB

  • memory/2816-20-0x0000000000A60000-0x0000000000A6C000-memory.dmp

    Filesize

    48KB