Analysis

  • max time kernel
    150s
  • max time network
    145s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-07-2024 01:01

General

  • Target

    a96fb9f82e3e9c69d5e101f23d2f53899c2ac8d8fcb4ae638f1fe0225aee3b6e.exe

  • Size

    924KB

  • MD5

    df4d4c4eee0bb233905ef88daca5e3e0

  • SHA1

    4c9c17b1c2e1654c7da04a3674f02cc15502b550

  • SHA256

    a96fb9f82e3e9c69d5e101f23d2f53899c2ac8d8fcb4ae638f1fe0225aee3b6e

  • SHA512

    63517b87374cc0e3cf5a20ce2e64e44355bc88cb5a9688127dcd7285b1092b46362495272274513ec33d16ab17d050f1f8ff988ad431c662ed0e315abadddc0d

  • SSDEEP

    24576:Yzra4MROxnFE3KrXpmrZlI0AilFEvxHinj:Yz1MiuQpmrZlI0AilFEvxHi

Malware Config

Extracted

Family

orcus

C2

192.168.0.2:3294

Mutex

ef78f6dadb714fbfa27cffbd5e73fe5b

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    true

  • install_path

    %programfiles%\NvidiaControler\NvidiaControler.exe

  • reconnect_delay

    10000

  • registry_keyname

    NvidiaControler

  • taskscheduler_taskname

    NvidiaControlers

  • watchdog_path

    AppData\NvidiaControler.exe

Signatures

  • Orcus

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

  • Orcus main payload 1 IoCs
  • Orcurs Rat Executable 2 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 6 IoCs
  • Drops desktop.ini file(s) 2 IoCs
  • Drops file in System32 directory 3 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a96fb9f82e3e9c69d5e101f23d2f53899c2ac8d8fcb4ae638f1fe0225aee3b6e.exe
    "C:\Users\Admin\AppData\Local\Temp\a96fb9f82e3e9c69d5e101f23d2f53899c2ac8d8fcb4ae638f1fe0225aee3b6e.exe"
    1⤵
    • Checks computer location settings
    • Drops desktop.ini file(s)
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:5020
    • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v2.0.50727\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\4tjgvffd.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2508
      • C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe
        C:\Windows\Microsoft.NET\Framework64\v2.0.50727\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES76B7.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC76B6.tmp"
        3⤵
          PID:1756
      • C:\Windows\SysWOW64\WindowsInput.exe
        "C:\Windows\SysWOW64\WindowsInput.exe" --install
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        PID:2624
      • C:\Program Files\NvidiaControler\NvidiaControler.exe
        "C:\Program Files\NvidiaControler\NvidiaControler.exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4888
        • C:\Users\Admin\AppData\Roaming\NvidiaControler.exe
          "C:\Users\Admin\AppData\Roaming\NvidiaControler.exe" /launchSelfAndExit "C:\Program Files\NvidiaControler\NvidiaControler.exe" 4888 /protectFile
          3⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:760
          • C:\Users\Admin\AppData\Roaming\NvidiaControler.exe
            "C:\Users\Admin\AppData\Roaming\NvidiaControler.exe" /watchProcess "C:\Program Files\NvidiaControler\NvidiaControler.exe" 4888 "/protectFile"
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:3504
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe"
      1⤵
      • Executes dropped EXE
      PID:5072
    • C:\Program Files\NvidiaControler\NvidiaControler.exe
      "C:\Program Files\NvidiaControler\NvidiaControler.exe"
      1⤵
      • Executes dropped EXE
      PID:4260

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Program Files\NvidiaControler\NvidiaControler.exe

      Filesize

      924KB

      MD5

      df4d4c4eee0bb233905ef88daca5e3e0

      SHA1

      4c9c17b1c2e1654c7da04a3674f02cc15502b550

      SHA256

      a96fb9f82e3e9c69d5e101f23d2f53899c2ac8d8fcb4ae638f1fe0225aee3b6e

      SHA512

      63517b87374cc0e3cf5a20ce2e64e44355bc88cb5a9688127dcd7285b1092b46362495272274513ec33d16ab17d050f1f8ff988ad431c662ed0e315abadddc0d

    • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\NvidiaControler.exe.log

      Filesize

      425B

      MD5

      4eaca4566b22b01cd3bc115b9b0b2196

      SHA1

      e743e0792c19f71740416e7b3c061d9f1336bf94

      SHA256

      34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

      SHA512

      bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

    • C:\Users\Admin\AppData\Local\Temp\4tjgvffd.dll

      Filesize

      76KB

      MD5

      eb5fff58146f0b2f9fdcdbdb65b3871f

      SHA1

      8e8dea894b5a36b697c1633fcb7f557a880bce80

      SHA256

      4178adfd1fa92387332a6dfff59ff4eb06f14e3842fab2fdd415ff75e654171a

      SHA512

      56ad6d2f505696499b17a8ff216c91a04e18d6a7f3b468b2b7092f3ed9b5d67344cd7d3ee110b348bbbd3c5aa2499fad61746df6cd8c02190fa0f12c6a382f25

    • C:\Users\Admin\AppData\Local\Temp\RES76B7.tmp

      Filesize

      1KB

      MD5

      21bba5818bd7bd501db91b50ff678468

      SHA1

      0d057f2194533ce7facf9e533bfe7622649d3745

      SHA256

      13da90948fb1dc843dd422b6c9c0171a5407173738d9a485392b2be9c51a09b0

      SHA512

      f4d1ddfe23b21260b540c1bea8b9d08cbd78a7004bf379bc94fd5f40126909f8649b3ec071c8de3d4e0bff7d3b8a1ab6d82649e7f5fe93b405cb1a6385d82381

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

      Filesize

      9KB

      MD5

      913967b216326e36a08010fb70f9dba3

      SHA1

      7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

      SHA256

      8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

      SHA512

      c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

    • C:\Users\Admin\AppData\Roaming\Orcus\err_ef78f6dadb714fbfa27cffbd5e73fe5b.dat

      Filesize

      1KB

      MD5

      6d9e80de3d41b69744bfcc10199218fa

      SHA1

      ab1f3531dff55c4930df54369ee452ab6899f194

      SHA256

      68431dac3fdd4f046fc9f3875d1910d31654c4581dc90452b8a95e986d16653f

      SHA512

      8904489ddf9d44537bca1fc825d8c703b35de19c18e8b83a3d6e3c8d0f8dd3d3f4e25df91572bc3291fd656dc125b16bfd4081f64c48e2e721b6b8a8daa76055

    • C:\Windows\SysWOW64\WindowsInput.exe

      Filesize

      21KB

      MD5

      e6fcf516d8ed8d0d4427f86e08d0d435

      SHA1

      c7691731583ab7890086635cb7f3e4c22ca5e409

      SHA256

      8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

      SHA512

      c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

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

      Filesize

      357B

      MD5

      a2b76cea3a59fa9af5ea21ff68139c98

      SHA1

      35d76475e6a54c168f536e30206578babff58274

      SHA256

      f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

      SHA512

      b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

    • \??\c:\Users\Admin\AppData\Local\Temp\4tjgvffd.0.cs

      Filesize

      208KB

      MD5

      76bfa17012f34a4f8af2ae43e212ff3b

      SHA1

      0f5433cf7832bba349424d76af8a1b929bcdeca2

      SHA256

      0566ed8059aac1226d648eed09d67dc3cd97879496deb78f6487d1c65bb78130

      SHA512

      bd8581a2704046407e9bc5a4c121230c73b04734f5fdf5291367010e0379c5f2270b3dfba30ffed0aa062c78e26b8239490eb030d8758df4eb26fc5f9bd38dcb

    • \??\c:\Users\Admin\AppData\Local\Temp\4tjgvffd.cmdline

      Filesize

      349B

      MD5

      cd686f71574e4594482db5c92ad9d9c5

      SHA1

      b1cdb91aaf9b5cfae5f9c57622ac2d968b5a4165

      SHA256

      8c6adcf114cb2b4738031a968dc35119aec4a3c4250ba0e94b90267b3c46ac3e

      SHA512

      b7bbff4853e3db14d09aa3fce1fed8d868da5ff0e20963ec0516793f6126556c70f87fcd2f13938abb770955424e37970786ad046401b4f21bcfbf77706a6045

    • \??\c:\Users\Admin\AppData\Local\Temp\CSC76B6.tmp

      Filesize

      676B

      MD5

      31eabce2ec0c38bf70343cee1808b596

      SHA1

      f8cbdf5fbafcac78a845af909743089dc7fbfc3d

      SHA256

      ecc12061f5f4dc7d431721cc06122ec2474c6703ae83ca17b329f2806890c01e

      SHA512

      e30718db7ae12203d0fe09417cf6d12669c1ff52b3ba814c447de07760ce85a6c2b0902116aa000b933b60f6b2f48e257d73a99a667eda7ebd6f992d76200d62

    • memory/760-99-0x0000000000BE0000-0x0000000000BE8000-memory.dmp

      Filesize

      32KB

    • memory/2508-14-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/2508-21-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/2624-52-0x00007FFA82A93000-0x00007FFA82A95000-memory.dmp

      Filesize

      8KB

    • memory/2624-51-0x0000000000250000-0x000000000025C000-memory.dmp

      Filesize

      48KB

    • memory/2624-53-0x0000000000A50000-0x0000000000A62000-memory.dmp

      Filesize

      72KB

    • memory/2624-54-0x0000000002380000-0x00000000023BC000-memory.dmp

      Filesize

      240KB

    • memory/4888-83-0x000000001B110000-0x000000001B128000-memory.dmp

      Filesize

      96KB

    • memory/4888-76-0x00000000002E0000-0x00000000003CE000-memory.dmp

      Filesize

      952KB

    • memory/4888-78-0x0000000000BB0000-0x0000000000BC2000-memory.dmp

      Filesize

      72KB

    • memory/4888-81-0x000000001C1F0000-0x000000001C23E000-memory.dmp

      Filesize

      312KB

    • memory/4888-85-0x000000001BFD0000-0x000000001BFE0000-memory.dmp

      Filesize

      64KB

    • memory/4888-84-0x000000001C880000-0x000000001CA42000-memory.dmp

      Filesize

      1.8MB

    • memory/5020-32-0x000000001E370000-0x000000001E3B9000-memory.dmp

      Filesize

      292KB

    • memory/5020-27-0x000000001BC40000-0x000000001BC48000-memory.dmp

      Filesize

      32KB

    • memory/5020-37-0x000000001E720000-0x000000001E740000-memory.dmp

      Filesize

      128KB

    • memory/5020-34-0x000000001E450000-0x000000001E4C0000-memory.dmp

      Filesize

      448KB

    • memory/5020-33-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/5020-0-0x00007FFA85A25000-0x00007FFA85A26000-memory.dmp

      Filesize

      4KB

    • memory/5020-30-0x000000001E270000-0x000000001E360000-memory.dmp

      Filesize

      960KB

    • memory/5020-31-0x000000001D4B0000-0x000000001D4CE000-memory.dmp

      Filesize

      120KB

    • memory/5020-29-0x000000001DCB0000-0x000000001E26A000-memory.dmp

      Filesize

      5.7MB

    • memory/5020-1-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/5020-28-0x000000001D350000-0x000000001D3B2000-memory.dmp

      Filesize

      392KB

    • memory/5020-35-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/5020-77-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/5020-26-0x0000000001660000-0x0000000001668000-memory.dmp

      Filesize

      32KB

    • memory/5020-25-0x00000000016E0000-0x00000000016F2000-memory.dmp

      Filesize

      72KB

    • memory/5020-23-0x000000001CF60000-0x000000001CF76000-memory.dmp

      Filesize

      88KB

    • memory/5020-8-0x000000001C8C0000-0x000000001C95C000-memory.dmp

      Filesize

      624KB

    • memory/5020-7-0x000000001C350000-0x000000001C81E000-memory.dmp

      Filesize

      4.8MB

    • memory/5020-6-0x00007FFA85770000-0x00007FFA86111000-memory.dmp

      Filesize

      9.6MB

    • memory/5020-5-0x000000001BD40000-0x000000001BD4E000-memory.dmp

      Filesize

      56KB

    • memory/5020-2-0x000000001BC50000-0x000000001BCAC000-memory.dmp

      Filesize

      368KB

    • memory/5072-59-0x000000001A660000-0x000000001A76A000-memory.dmp

      Filesize

      1.0MB