Analysis

  • max time kernel
    62s
  • max time network
    63s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-02-2024 13:36

General

  • Target

    rat.exe

  • Size

    1.8MB

  • MD5

    8ad0919a0ee7cba7298d009d4b58e3ff

  • SHA1

    f75c3c9f06aa11b72db556d259b40a11d685ac11

  • SHA256

    798159895032344c910b1d937ebda40fafeb2c657e3039c49c0999d77a73f75f

  • SHA512

    23d50fc6006cb610a35cacdf29fee5a074993eb3b3e3f3746d78e9c621fb41c7ac0dda24fd4be4412b3a9915fd93cd1f46fa6f7a476bf53a8cee370939a2a064

  • SSDEEP

    49152:kJuHrhm4SEHZF6qXyoU7Ej44FoGl3RRZr7NoazWVgUIRFSO1SSQ:CMrh3JHZF6VoUoj4+7fNo

Malware Config

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 7 IoCs
  • Loads dropped DLL 11 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs
  • Drops file in System32 directory 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 6 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 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 13 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\rat.exe
    "C:\Users\Admin\AppData\Local\Temp\rat.exe"
    1⤵
    • Checks computer location settings
    • Drops file in System32 directory
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:3532
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:1584
    • C:\Program Files (x86)\Orcus\Orcus.exe
      "C:\Program Files (x86)\Orcus\Orcus.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:4492
      • C:\Users\Admin\AppData\Roaming\Sys322.exe
        "C:\Users\Admin\AppData\Roaming\Sys322.exe" /launchSelfAndExit "C:\Program Files (x86)\Orcus\Orcus.exe" 4492 /protectFile
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:316
        • C:\Users\Admin\AppData\Roaming\Sys322.exe
          "C:\Users\Admin\AppData\Roaming\Sys322.exe" /watchProcess "C:\Program Files (x86)\Orcus\Orcus.exe" 4492 "/protectFile"
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:3480
      • C:\Windows\SysWOW64\WindowsInput.exe
        "C:\Windows\SysWOW64\WindowsInput.exe" --uninstall
        3⤵
        • Executes dropped EXE
        PID:968
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    PID:1940
  • C:\Program Files (x86)\Orcus\Orcus.exe
    "C:\Program Files (x86)\Orcus\Orcus.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:4108

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Orcus\Orcus.exe

    Filesize

    1.8MB

    MD5

    8ad0919a0ee7cba7298d009d4b58e3ff

    SHA1

    f75c3c9f06aa11b72db556d259b40a11d685ac11

    SHA256

    798159895032344c910b1d937ebda40fafeb2c657e3039c49c0999d77a73f75f

    SHA512

    23d50fc6006cb610a35cacdf29fee5a074993eb3b3e3f3746d78e9c621fb41c7ac0dda24fd4be4412b3a9915fd93cd1f46fa6f7a476bf53a8cee370939a2a064

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

    Filesize

    2KB

    MD5

    78ffbfd38b4ab75e03596bbb2d321e25

    SHA1

    1b99ba3cfa6389b8483b36b28836aca4773845e4

    SHA256

    6a6a889f671eea1112a70756ae849bc1c32357ac2818bfa79db84bbbb9813a5d

    SHA512

    e18ff531f792282d0efa0d4264daa36e2d0112ac6d06eabfeb98ffd78570583a602defe3e71332d8801294dc90a2af9a8cdc1e1d0b9c5d0264c584d775cf0243

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Sys322.exe.log

    Filesize

    425B

    MD5

    4eaca4566b22b01cd3bc115b9b0b2196

    SHA1

    e743e0792c19f71740416e7b3c061d9f1336bf94

    SHA256

    34ba0ab8d1850e7825763f413142a333ccbc05fa2b5499a28a7d27b8a1c5b4bb

    SHA512

    bc2b1bf45203e3bb3009a7d37617b8f0f7ffa613680b32de2b963e39d2cf1650614d7035a0cf78f35a4f5cb17a2a439e2e07deaefd2a4275a62efd0a5c0184a1

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\SharpDX.DXGI.dll

    Filesize

    125KB

    MD5

    2b44c70c49b70d797fbb748158b5d9bb

    SHA1

    93e00e6527e461c45c7868d14cf05c007e478081

    SHA256

    3762d43c83af69cd38c9341a927ca6bd00f6bae8217c874d693047d6df4705bf

    SHA512

    faced62f6ecbfa2ee0d7a47e300302d23030d1f28758cbe9c442e9d8d4f8359c59088aa6237a28103e43d248c8efc7eeaf2c184028701b752df6cce92d6854d0

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\SharpDX.Direct3D11.dll

    Filesize

    271KB

    MD5

    98eb5ba5871acdeaebf3a3b0f64be449

    SHA1

    c965284f60ef789b00b10b3df60ee682b4497de3

    SHA256

    d7617d926648849cbfef450b8f48e458ee52e2793fb2251a30094b778aa8848c

    SHA512

    a60025e304713d333e4b82b2d0be28087950688b049c98d2db5910c00b8d45b92e16d25ac8a58ff1318de019de3a9a00c7cbf8a6ad4b5bb1cb175dafa1b9bea2

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\SharpDX.Direct3D9.dll

    Filesize

    338KB

    MD5

    934da0e49208d0881c44fe19d5033840

    SHA1

    a19c5a822e82e41752a08d3bd9110db19a8a5016

    SHA256

    02da4af8cd4a8de19d816000caaae885e676b9e52f136ff071a279c2b8ad34c7

    SHA512

    de62f629c2299b50af62893244a28895d63b78138c8632449984306f45de16bd01076eadbb0d75a700215e970c1df731e202ea640236c0f0da6ed15146193b59

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\SharpDX.dll

    Filesize

    247KB

    MD5

    ffb4b61cc11bec6d48226027c2c26704

    SHA1

    fa8b9e344accbdc4dffa9b5d821d23f0716da29e

    SHA256

    061542ff3fb36039b7bbffdf3e07b66176b264c1dfd834a14b09c08620717303

    SHA512

    48aa6130bf1f5bd6de19256bbdf754c0158b43dd122cec47bb801a7a7b56f2da268bfdec24d135621764a23278ead3dcc35911a057e2dfa55a348bae8ef7b8a9

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\TurboJpegWrapper.dll

    Filesize

    1.3MB

    MD5

    ac6acc235ebef6374bed71b37e322874

    SHA1

    a267baad59cd7352167636836bad4b971fcd6b6b

    SHA256

    047b042cebf4c851f0d14f85f16ce952f03e48c20362d4ed9390875d4900fe96

    SHA512

    72ac8b8c8f27264cc261297c325d14a0be2084d007c6132ab8402d87f912fe9189cb074db11625d9f86d29a6188f22a89e58ae45c9131fac4522473567017081

  • C:\Users\Admin\AppData\Roaming\ASystem\lib_0133d229c4e24006957c0e4ab3a52531\x86\turbojpeg.dll

    Filesize

    646KB

    MD5

    82898ed19da89d7d44e280a3ced95e9b

    SHA1

    eec0af5733c642eac8c5e08479f462d1ec1ed4db

    SHA256

    5f4b9f8360764d75c9faaecd94f6d200c54611b33064cd216e363d973dae7c29

    SHA512

    ee7b884ce7d7366ee28fb17721b6c89bd4eba8fb373cdbb483e26a4ed7a74ab5db847513c54704d753d77a7e18b1fb9fee90ed6bbc0540bff702273fda36b682

  • C:\Users\Admin\AppData\Roaming\Sys322.exe

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • C:\Windows\SysWOW64\WindowsInput.InstallState

    Filesize

    7KB

    MD5

    362ce475f5d1e84641bad999c16727a0

    SHA1

    6b613c73acb58d259c6379bd820cca6f785cc812

    SHA256

    1f78f1056761c6ebd8965ed2c06295bafa704b253aff56c492b93151ab642899

    SHA512

    7630e1629cf4abecd9d3ddea58227b232d5c775cb480967762a6a6466be872e1d57123b08a6179fe1cfbc09403117d0f81bc13724f259a1d25c1325f1eac645b

  • 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

  • memory/316-76-0x00000000008D0000-0x00000000008D8000-memory.dmp

    Filesize

    32KB

  • memory/316-81-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/316-77-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/968-143-0x000000001B850000-0x000000001B860000-memory.dmp

    Filesize

    64KB

  • memory/968-142-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1584-28-0x000000001AF40000-0x000000001AF50000-memory.dmp

    Filesize

    64KB

  • memory/1584-27-0x000000001AF00000-0x000000001AF3C000-memory.dmp

    Filesize

    240KB

  • memory/1584-32-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1584-24-0x00000000003E0000-0x00000000003EC000-memory.dmp

    Filesize

    48KB

  • memory/1584-26-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1584-25-0x0000000002490000-0x00000000024A2000-memory.dmp

    Filesize

    72KB

  • memory/1940-95-0x0000000001A60000-0x0000000001A70000-memory.dmp

    Filesize

    64KB

  • memory/1940-147-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1940-94-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/1940-36-0x000000001B310000-0x000000001B41A000-memory.dmp

    Filesize

    1.0MB

  • memory/1940-35-0x0000000001A60000-0x0000000001A70000-memory.dmp

    Filesize

    64KB

  • memory/1940-34-0x00007FFCEBAF0000-0x00007FFCEC5B1000-memory.dmp

    Filesize

    10.8MB

  • memory/3480-136-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3480-82-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3532-52-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3532-7-0x0000000006310000-0x00000000068B4000-memory.dmp

    Filesize

    5.6MB

  • memory/3532-10-0x0000000006040000-0x0000000006062000-memory.dmp

    Filesize

    136KB

  • memory/3532-9-0x0000000005E60000-0x0000000005E72000-memory.dmp

    Filesize

    72KB

  • memory/3532-0-0x0000000000BF0000-0x0000000000F48000-memory.dmp

    Filesize

    3.3MB

  • memory/3532-3-0x0000000007BB0000-0x0000000007BC0000-memory.dmp

    Filesize

    64KB

  • memory/3532-4-0x0000000005C90000-0x0000000005CFE000-memory.dmp

    Filesize

    440KB

  • memory/3532-5-0x00000000058A0000-0x00000000058AE000-memory.dmp

    Filesize

    56KB

  • memory/3532-2-0x0000000005360000-0x0000000005361000-memory.dmp

    Filesize

    4KB

  • memory/3532-6-0x0000000005D00000-0x0000000005D5C000-memory.dmp

    Filesize

    368KB

  • memory/3532-1-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/3532-8-0x0000000005E70000-0x0000000005F02000-memory.dmp

    Filesize

    584KB

  • memory/4108-93-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/4108-75-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/4492-88-0x0000000007BA0000-0x0000000007BB2000-memory.dmp

    Filesize

    72KB

  • memory/4492-96-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB

  • memory/4492-97-0x0000000007870000-0x0000000007880000-memory.dmp

    Filesize

    64KB

  • memory/4492-91-0x0000000007FC0000-0x00000000080CA000-memory.dmp

    Filesize

    1.0MB

  • memory/4492-102-0x0000000007010000-0x0000000007054000-memory.dmp

    Filesize

    272KB

  • memory/4492-90-0x0000000007E60000-0x0000000007EAC000-memory.dmp

    Filesize

    304KB

  • memory/4492-109-0x0000000007080000-0x00000000070CA000-memory.dmp

    Filesize

    296KB

  • memory/4492-89-0x0000000007E20000-0x0000000007E5C000-memory.dmp

    Filesize

    240KB

  • memory/4492-116-0x0000000008130000-0x000000000818A000-memory.dmp

    Filesize

    360KB

  • memory/4492-87-0x0000000008400000-0x0000000008A18000-memory.dmp

    Filesize

    6.1MB

  • memory/4492-123-0x0000000007F70000-0x0000000007F96000-memory.dmp

    Filesize

    152KB

  • memory/4492-86-0x0000000007BF0000-0x0000000007C56000-memory.dmp

    Filesize

    408KB

  • memory/4492-130-0x0000000008B80000-0x0000000008CD4000-memory.dmp

    Filesize

    1.3MB

  • memory/4492-61-0x0000000006E30000-0x0000000006E3A000-memory.dmp

    Filesize

    40KB

  • memory/4492-60-0x0000000006510000-0x0000000006520000-memory.dmp

    Filesize

    64KB

  • memory/4492-137-0x00000000660C0000-0x000000006614F000-memory.dmp

    Filesize

    572KB

  • memory/4492-59-0x0000000006870000-0x0000000006A32000-memory.dmp

    Filesize

    1.8MB

  • memory/4492-57-0x0000000005F20000-0x0000000005F38000-memory.dmp

    Filesize

    96KB

  • memory/4492-56-0x0000000005C10000-0x0000000005C5E000-memory.dmp

    Filesize

    312KB

  • memory/4492-55-0x0000000007870000-0x0000000007880000-memory.dmp

    Filesize

    64KB

  • memory/4492-53-0x0000000074520000-0x0000000074CD0000-memory.dmp

    Filesize

    7.7MB