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Analysis

  • max time kernel
    150s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/12/2024, 01:02

General

  • Target

    790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe

  • Size

    3.0MB

  • MD5

    a5c760e458503463ed3902bdbf605e4e

  • SHA1

    2fb83c914783070267e42dbad89fd2c7afc9d9af

  • SHA256

    790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32

  • SHA512

    5b905facc4db2afb1dec0460b965c705c2566d91e2db7a95bc23cbd7dc8cbdb9414d4b4a6306e7a57d5ff4eb658910f12497608d5442cc5d8c740dc5be446b5b

  • SSDEEP

    49152:XP7p1EZKMnkmWg8LX5prviYDyKS5AypQxbRQAo9JnCmpiu/nRFfjI7L0qb:XPHTPJg8z1mKnypSbRxo9JCm

Malware Config

Extracted

Family

orcus

Botnet

Mamont

C2

31.44.184.52:38135

Mutex

sudo_hukjod904skbxj09l4njrec7guj3gu0r

Attributes
  • autostart_method

    Disable

  • enable_keylogger

    false

  • install_path

    C:\ProgramData\$77RegAsm.exe

  • reconnect_delay

    10000

  • registry_keyname

    Sudik

  • taskscheduler_taskname

    sudik

  • watchdog_path

    AppData\aga.exe

Signatures

  • Orcus

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

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

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

  • Executes dropped EXE 4 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 9 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe
    "C:\Users\Admin\AppData\Local\Temp\790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1920
    • C:\ProgramData\$77RegAsm.exe
      "C:\ProgramData\$77RegAsm.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
        3⤵
          PID:4340
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
          3⤵
            PID:2024
          • C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe
            "C:\Windows\Microsoft.NET\Framework\v4.0.30319\caspol.exe"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            PID:1300
      • C:\ProgramData\$77RegAsm.exe
        C:\ProgramData\$77RegAsm.exe
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1136
      • C:\ProgramData\$77RegAsm.exe
        C:\ProgramData\$77RegAsm.exe
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:3536
      • C:\ProgramData\$77RegAsm.exe
        C:\ProgramData\$77RegAsm.exe
        1⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4744

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\$77RegAsm.exe

        Filesize

        3.0MB

        MD5

        a5c760e458503463ed3902bdbf605e4e

        SHA1

        2fb83c914783070267e42dbad89fd2c7afc9d9af

        SHA256

        790c0d272971a137154f73bb6cb829ac88a9fa9dceaee1e656392dc8bc1e0c32

        SHA512

        5b905facc4db2afb1dec0460b965c705c2566d91e2db7a95bc23cbd7dc8cbdb9414d4b4a6306e7a57d5ff4eb658910f12497608d5442cc5d8c740dc5be446b5b

      • C:\ProgramData\$77RegAsm.exe.config

        Filesize

        357B

        MD5

        a2b76cea3a59fa9af5ea21ff68139c98

        SHA1

        35d76475e6a54c168f536e30206578babff58274

        SHA256

        f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

        SHA512

        b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\$77RegAsm.exe.log

        Filesize

        1KB

        MD5

        663b8d5469caa4489d463aa9bc18124f

        SHA1

        e57123a7d969115853ea631a3b33826335025d28

        SHA256

        7b4fa505452f0b8ac74bb31f5a03b13342836318018fb18d224ae2ff11b1a7e8

        SHA512

        45e373295125a629fcc0b19609608d969c9106514918bfac5d6b8e340e407434577b825741b8fa6a043c8f3f5c1a030ba8857da5f4e8ef15a551ce3c5fe03b55

      • memory/1136-43-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/1136-29-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/1300-45-0x0000000007670000-0x000000000777A000-memory.dmp

        Filesize

        1.0MB

      • memory/1300-44-0x00000000074E0000-0x000000000752C000-memory.dmp

        Filesize

        304KB

      • memory/1300-42-0x00000000074A0000-0x00000000074DC000-memory.dmp

        Filesize

        240KB

      • memory/1300-34-0x0000000005DD0000-0x0000000005DE8000-memory.dmp

        Filesize

        96KB

      • memory/1300-46-0x0000000007FE0000-0x00000000081A2000-memory.dmp

        Filesize

        1.8MB

      • memory/1300-41-0x0000000007440000-0x0000000007452000-memory.dmp

        Filesize

        72KB

      • memory/1300-40-0x00000000079C0000-0x0000000007FD8000-memory.dmp

        Filesize

        6.1MB

      • memory/1300-39-0x0000000007330000-0x0000000007396000-memory.dmp

        Filesize

        408KB

      • memory/1300-36-0x0000000006A90000-0x0000000006A9A000-memory.dmp

        Filesize

        40KB

      • memory/1300-35-0x0000000005E00000-0x0000000005E10000-memory.dmp

        Filesize

        64KB

      • memory/1300-47-0x0000000007620000-0x000000000762E000-memory.dmp

        Filesize

        56KB

      • memory/1300-48-0x0000000008200000-0x0000000008250000-memory.dmp

        Filesize

        320KB

      • memory/1920-7-0x0000000005750000-0x0000000005762000-memory.dmp

        Filesize

        72KB

      • memory/1920-4-0x0000000005770000-0x00000000057CC000-memory.dmp

        Filesize

        368KB

      • memory/1920-1-0x0000000000980000-0x0000000000C7E000-memory.dmp

        Filesize

        3.0MB

      • memory/1920-2-0x0000000002E20000-0x0000000002E2E000-memory.dmp

        Filesize

        56KB

      • memory/1920-3-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/1920-6-0x00000000058C0000-0x0000000005952000-memory.dmp

        Filesize

        584KB

      • memory/1920-22-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/1920-0-0x000000007541E000-0x000000007541F000-memory.dmp

        Filesize

        4KB

      • memory/1920-5-0x0000000005E70000-0x0000000006414000-memory.dmp

        Filesize

        5.6MB

      • memory/4692-24-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/4692-33-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/4692-25-0x0000000075410000-0x0000000075BC0000-memory.dmp

        Filesize

        7.7MB

      • memory/4692-26-0x0000000005BB0000-0x0000000005BFE000-memory.dmp

        Filesize

        312KB

      • memory/4692-28-0x00000000064F0000-0x000000000658C000-memory.dmp

        Filesize

        624KB