Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20230220-en
  • resource tags

    arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
  • submitted
    21-03-2023 14:41

General

  • Target

    9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a.exe

  • Size

    921KB

  • MD5

    41394beb6f31b8215c7b9d0b8d412c3e

  • SHA1

    c0436e7d59d3be57a1edc94ce52a5e03312aa368

  • SHA256

    9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

  • SHA512

    dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

  • SSDEEP

    24576:n6A4MROxnF43F9MQrrZlI0AilFEvxHihrTE:n6jMiG4wrZlI0AilFEvxHih

Malware Config

Extracted

Family

orcus

C2

147.185.221.229:56094

Mutex

0a90560fd1de4ef0859fc02bececce78

Attributes
  • autostart_method

    Registry

  • enable_keylogger

    true

  • install_path

    %programfiles%\svhost\svhost.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\svhost.exe

Signatures

  • Orcus

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

  • Orcus main payload 3 IoCs
  • Orcurs Rat Executable 6 IoCs
  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 23 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\9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a.exe
    "C:\Users\Admin\AppData\Local\Temp\9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2024
    • 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\22imqxy4.cmdline"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1964
      • 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\RES1A66.tmp" "c:\Users\Admin\AppData\Local\Temp\CSC1A65.tmp"
        3⤵
          PID:1472
      • C:\Windows\SysWOW64\WindowsInput.exe
        "C:\Windows\SysWOW64\WindowsInput.exe" --install
        2⤵
        • Executes dropped EXE
        • Drops file in System32 directory
        PID:1496
      • C:\Program Files\svhost\svhost.exe
        "C:\Program Files\svhost\svhost.exe"
        2⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:1516
        • C:\Users\Admin\AppData\Roaming\svhost.exe
          "C:\Users\Admin\AppData\Roaming\svhost.exe" /launchSelfAndExit "C:\Program Files\svhost\svhost.exe" 1516 /protectFile
          3⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1992
          • C:\Users\Admin\AppData\Roaming\svhost.exe
            "C:\Users\Admin\AppData\Roaming\svhost.exe" /watchProcess "C:\Program Files\svhost\svhost.exe" 1516 "/protectFile"
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:968
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe"
      1⤵
      • Executes dropped EXE
      PID:1532
    • C:\Windows\system32\taskeng.exe
      taskeng.exe {8300AEE4-1D20-428C-A023-1FABE2F000FC} S-1-5-21-2647223082-2067913677-935928954-1000:BPOQNXYB\Admin:Interactive:[1]
      1⤵
      • Suspicious use of WriteProcessMemory
      PID:1968
      • C:\Program Files\svhost\svhost.exe
        "C:\Program Files\svhost\svhost.exe"
        2⤵
        • Executes dropped EXE
        PID:1380

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

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

      Filesize

      921KB

      MD5

      41394beb6f31b8215c7b9d0b8d412c3e

      SHA1

      c0436e7d59d3be57a1edc94ce52a5e03312aa368

      SHA256

      9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

      SHA512

      dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

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

      Filesize

      921KB

      MD5

      41394beb6f31b8215c7b9d0b8d412c3e

      SHA1

      c0436e7d59d3be57a1edc94ce52a5e03312aa368

      SHA256

      9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

      SHA512

      dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

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

      Filesize

      921KB

      MD5

      41394beb6f31b8215c7b9d0b8d412c3e

      SHA1

      c0436e7d59d3be57a1edc94ce52a5e03312aa368

      SHA256

      9f2151b2fd626d5139a7a292b4faffdedcc45346953b0ce71fa281615e6f350a

      SHA512

      dfd7ee246b53878037323ed246cf0aea90d43071a1499512e9db0b1b29376ab4cc09739ea03186839d47b7f2b54aa32c395eac4e67a6d32e7b37a78e4b5d9e1b

    • C:\Program Files\svhost\svhost.exe.config

      Filesize

      357B

      MD5

      a2b76cea3a59fa9af5ea21ff68139c98

      SHA1

      35d76475e6a54c168f536e30206578babff58274

      SHA256

      f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

      SHA512

      b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

    • C:\Users\Admin\AppData\Local\Temp\22imqxy4.dll

      Filesize

      76KB

      MD5

      bc3a6bd5126dd9ad1cc80cafe1993295

      SHA1

      5ece5b7b580c3c3e416b97dd6946cf4465aa8a9e

      SHA256

      602d7c8c9f714bc1a5946c7377a96e9d15ef8fde85d423d0d176d24061665e83

      SHA512

      bb5bac01b82681c4c18bb9ad1ba62756b97c51118fb6d6405465acfe84307ab904c7b38b7cbf58f7091d4ade73c4d0b681a8572ab365b720ee5f4392c8a1fe83

    • C:\Users\Admin\AppData\Local\Temp\RES1A66.tmp

      Filesize

      1KB

      MD5

      014a9b93a6eb74b7911c9b74b87bb3e7

      SHA1

      ecb4b99ddb6a3ff3fe5f5b6aa1eec36196d03a13

      SHA256

      9b8ac5dc83ba3fb8c6e545d0031b763412c3e996ceabe37c656bb7453b5d949f

      SHA512

      bae6ef81ed25683ff1436957df2c03b29f74b14ec77b4e84118871d7043a118f34c5c3c3cf0d3ea7248b2be1c531cef2524b7cb94ced64266e37ec804fd7cedf

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

      Filesize

      9KB

      MD5

      913967b216326e36a08010fb70f9dba3

      SHA1

      7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

      SHA256

      8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

      SHA512

      c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

      Filesize

      9KB

      MD5

      913967b216326e36a08010fb70f9dba3

      SHA1

      7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

      SHA256

      8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

      SHA512

      c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

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

      Filesize

      9KB

      MD5

      913967b216326e36a08010fb70f9dba3

      SHA1

      7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

      SHA256

      8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

      SHA512

      c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

    • C:\Users\Admin\AppData\Roaming\svhost.exe.config

      Filesize

      357B

      MD5

      a2b76cea3a59fa9af5ea21ff68139c98

      SHA1

      35d76475e6a54c168f536e30206578babff58274

      SHA256

      f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

      SHA512

      b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

    • C:\Users\Admin\AppData\Roaming\svhost\err_0a90560fd1de4ef0859fc02bececce78.dat

      Filesize

      1KB

      MD5

      49d5c4c167723233e349510920f3e08e

      SHA1

      814841670f3a05fde7a3cd3883d1e2bd0fcb6028

      SHA256

      829061bb92db2871580b56d38ed20456844692c01e19e02e0930e2c8067cc51c

      SHA512

      22349a470219939d35012667750ac482c6d591e17de589313cbb259fa07946b3d9d7f61a58fdb0ad8c9d9130844bd0168f99020453682ef5546565a45362bd5b

    • C:\Windows\SysWOW64\WindowsInput.exe

      Filesize

      21KB

      MD5

      e6fcf516d8ed8d0d4427f86e08d0d435

      SHA1

      c7691731583ab7890086635cb7f3e4c22ca5e409

      SHA256

      8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

      SHA512

      c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

    • C:\Windows\SysWOW64\WindowsInput.exe

      Filesize

      21KB

      MD5

      e6fcf516d8ed8d0d4427f86e08d0d435

      SHA1

      c7691731583ab7890086635cb7f3e4c22ca5e409

      SHA256

      8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

      SHA512

      c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

    • 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\22imqxy4.0.cs

      Filesize

      208KB

      MD5

      250321226bbc2a616d91e1c82cb4ab2b

      SHA1

      7cffd0b2e9c842865d8961386ab8fcfac8d04173

      SHA256

      ef2707f83a0c0927cfd46b115641b9cae52a41123e4826515b9eeb561785218d

      SHA512

      bda59ca04cdf254f837f2cec6da55eff5c3d2af00da66537b9ebaa3601c502ae63772f082fd12663b63d537d2e03efe87a3b5746ef25e842aaf1c7d88245b4e1

    • \??\c:\Users\Admin\AppData\Local\Temp\22imqxy4.cmdline

      Filesize

      349B

      MD5

      4c58ad99d3daba939b00ed06f41f3362

      SHA1

      18c834a9acb1d09a8b9114c344f685fcef9436ee

      SHA256

      7b5fc432189551a9362809238987d2d98ed5bc65273ff105542365b623131455

      SHA512

      f60f316b664a4aef30bca77a33a376be3e5fb35ed117336bb9166d61593701a13dd91d0f39da91c71930147f934e81053dbba7a9235e06551760ee2e4c0b3fec

    • \??\c:\Users\Admin\AppData\Local\Temp\CSC1A65.tmp

      Filesize

      676B

      MD5

      13e5ab97201cfc9c41f00ac97f268a61

      SHA1

      657a411094c168c67e00350668098e06f192a0c4

      SHA256

      b2456a789137b782024c3f69f3f0d5e7c78cb17035bf25a8ca2a291cd3b9623c

      SHA512

      2cc4601b38ff1fc61aef87952045d5f4b96a4999a5223c6510559a323dfce8be8c8bbf2423bc8494c7b41db06f48d342422f6d5ae3dfd183ea32f24ba79d2c71

    • memory/1380-124-0x000000001B030000-0x000000001B0B0000-memory.dmp

      Filesize

      512KB

    • memory/1496-83-0x0000000000290000-0x000000000029C000-memory.dmp

      Filesize

      48KB

    • memory/1516-97-0x0000000000350000-0x000000000043C000-memory.dmp

      Filesize

      944KB

    • memory/1516-139-0x000000001A7F0000-0x000000001A870000-memory.dmp

      Filesize

      512KB

    • memory/1516-98-0x00000000005F0000-0x0000000000602000-memory.dmp

      Filesize

      72KB

    • memory/1516-99-0x000000001A7F0000-0x000000001A870000-memory.dmp

      Filesize

      512KB

    • memory/1516-138-0x000000001A7F0000-0x000000001A870000-memory.dmp

      Filesize

      512KB

    • memory/1516-102-0x0000000001F30000-0x0000000001F7E000-memory.dmp

      Filesize

      312KB

    • memory/1516-103-0x000000001A7A0000-0x000000001A7B8000-memory.dmp

      Filesize

      96KB

    • memory/1516-104-0x000000001A7D0000-0x000000001A7E0000-memory.dmp

      Filesize

      64KB

    • memory/1516-122-0x000000001A7F0000-0x000000001A870000-memory.dmp

      Filesize

      512KB

    • memory/1532-87-0x0000000000110000-0x000000000011C000-memory.dmp

      Filesize

      48KB

    • memory/1532-137-0x0000000019C80000-0x0000000019D00000-memory.dmp

      Filesize

      512KB

    • memory/1532-88-0x0000000019C80000-0x0000000019D00000-memory.dmp

      Filesize

      512KB

    • memory/1992-114-0x0000000000BF0000-0x0000000000BF8000-memory.dmp

      Filesize

      32KB

    • memory/2024-55-0x000000001AE50000-0x000000001AEAC000-memory.dmp

      Filesize

      368KB

    • memory/2024-72-0x00000000002C0000-0x00000000002D2000-memory.dmp

      Filesize

      72KB

    • memory/2024-73-0x00000000008A0000-0x00000000008A8000-memory.dmp

      Filesize

      32KB

    • memory/2024-71-0x0000000000B90000-0x0000000000C10000-memory.dmp

      Filesize

      512KB

    • memory/2024-69-0x0000000000B70000-0x0000000000B86000-memory.dmp

      Filesize

      88KB

    • memory/2024-54-0x0000000000FC0000-0x00000000010AC000-memory.dmp

      Filesize

      944KB

    • memory/2024-81-0x0000000000B90000-0x0000000000C10000-memory.dmp

      Filesize

      512KB

    • memory/2024-56-0x0000000000280000-0x000000000028E000-memory.dmp

      Filesize

      56KB