Analysis

  • max time kernel
    150s
  • max time network
    139s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    08-02-2024 01:08

General

  • Target

    2ca341bc60674d590069eb99e8bf2ecb8cbf44c0fd0d40e7a7b870f05b5a900c.exe

  • Size

    1.1MB

  • MD5

    34b6450b9e4e3b3727ff9d7e9c790d34

  • SHA1

    edbbd2c236ac2fe7402b938199b70f3510c2c58c

  • SHA256

    2ca341bc60674d590069eb99e8bf2ecb8cbf44c0fd0d40e7a7b870f05b5a900c

  • SHA512

    65349b6632615201537f9f1791f52de07d1ee101edddc1696916dfb02b320c45272be95286b25c4a743cf6b8889489f6e7b93c774ded6c46b98a74337748da38

  • SSDEEP

    24576:H884MROxnFE3ci3rrcI0AilFEvxHPpoot:HGMiuv3rrcI0AilFEvxHP

Malware Config

Extracted

Family

orcus

C2

0.tcp.eu.ngrok.io:12187

Mutex

f78b25f6477f429680c2e1eadc9b201c

Attributes
  • autostart_method

    TaskScheduler

  • enable_keylogger

    false

  • install_path

    %programfiles%\svchost\svchost.exe

  • reconnect_delay

    10000

  • registry_keyname

    Orcus

  • taskscheduler_taskname

    Orcus

  • watchdog_path

    AppData\svchost.exe

Signatures

  • Orcus

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

  • Orcus main payload 1 IoCs
  • Orcurs Rat Executable 3 IoCs
  • Executes dropped EXE 6 IoCs
  • Loads dropped DLL 3 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 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).

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2ca341bc60674d590069eb99e8bf2ecb8cbf44c0fd0d40e7a7b870f05b5a900c.exe
    "C:\Users\Admin\AppData\Local\Temp\2ca341bc60674d590069eb99e8bf2ecb8cbf44c0fd0d40e7a7b870f05b5a900c.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Suspicious use of WriteProcessMemory
    PID:2296
    • C:\Windows\SysWOW64\WindowsInput.exe
      "C:\Windows\SysWOW64\WindowsInput.exe" --install
      2⤵
      • Executes dropped EXE
      • Drops file in System32 directory
      PID:2864
    • C:\Program Files (x86)\svchost\svchost.exe
      "C:\Program Files (x86)\svchost\svchost.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Users\Admin\AppData\Roaming\svchost.exe
        "C:\Users\Admin\AppData\Roaming\svchost.exe" /launchSelfAndExit "C:\Program Files (x86)\svchost\svchost.exe" 2216
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:1584
        • C:\Users\Admin\AppData\Roaming\svchost.exe
          "C:\Users\Admin\AppData\Roaming\svchost.exe" /watchProcess "C:\Program Files (x86)\svchost\svchost.exe" 2216
          4⤵
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          PID:2332
  • C:\Windows\SysWOW64\WindowsInput.exe
    "C:\Windows\SysWOW64\WindowsInput.exe"
    1⤵
    • Executes dropped EXE
    PID:2632
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {A7E7D3E5-25E7-4D65-9494-B1C5C598B7F1} S-1-5-21-3601492379-692465709-652514833-1000:CALKHSYM\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2792
    • C:\Program Files (x86)\svchost\svchost.exe
      "C:\Program Files (x86)\svchost\svchost.exe"
      2⤵
      • Executes dropped EXE
      PID:2608

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svchost\err_f78b25f6477f429680c2e1eadc9b201c.dat

    Filesize

    1KB

    MD5

    1e02e4c03e3b45510ae8fb87d2fb8a49

    SHA1

    2babcf02c0584251c4089a500cb939dd6d93ca30

    SHA256

    7ff7fa1df2952f3af98ad2e0825b9693cfb89d7c01264c10d28c23e92914c036

    SHA512

    648e8abe30104186ef7419404eedcc49f6678ff3980e717bfbfdb9b5dbd2c8cec321e626cf8e5055e87175de089207e417ef248809aadaf22de81e9e4f97ec66

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

    Filesize

    357B

    MD5

    a2b76cea3a59fa9af5ea21ff68139c98

    SHA1

    35d76475e6a54c168f536e30206578babff58274

    SHA256

    f99ef5bf79a7c43701877f0bb0b890591885bb0a3d605762647cc8ffbf10c839

    SHA512

    b52608b45153c489419228864ecbcb92be24c644d470818dfe15f8c7e661a7bcd034ea13ef401f2b84ad5c29a41c9b4c7d161cc33ae3ef71659bc2bca1a8c4ad

  • \Program Files (x86)\svchost\svchost.exe

    Filesize

    1.1MB

    MD5

    34b6450b9e4e3b3727ff9d7e9c790d34

    SHA1

    edbbd2c236ac2fe7402b938199b70f3510c2c58c

    SHA256

    2ca341bc60674d590069eb99e8bf2ecb8cbf44c0fd0d40e7a7b870f05b5a900c

    SHA512

    65349b6632615201537f9f1791f52de07d1ee101edddc1696916dfb02b320c45272be95286b25c4a743cf6b8889489f6e7b93c774ded6c46b98a74337748da38

  • \Users\Admin\AppData\Roaming\svchost.exe

    Filesize

    9KB

    MD5

    913967b216326e36a08010fb70f9dba3

    SHA1

    7b6f8c2eb5b443e03c212b85c2f0edb9c76ad2bf

    SHA256

    8d880758549220154d2ff4ee578f2b49527c5fb76a07d55237b61e30bcc09e3a

    SHA512

    c6fcb98d9fd509e9834fc3fba143bd36d41869cc104fbce5354951f0a6756156e34a30796baaa130dd45de3ed96e039ec14716716f6da4569915c7ef2d2b6c33

  • \Windows\SysWOW64\WindowsInput.exe

    Filesize

    21KB

    MD5

    e6fcf516d8ed8d0d4427f86e08d0d435

    SHA1

    c7691731583ab7890086635cb7f3e4c22ca5e409

    SHA256

    8dbe814359391ed6b0b5b182039008cf1d00964da9fbc4747f46242a95c24337

    SHA512

    c496cf8e2e222fe1e19051b291e6860f31aae39f54369c1c5e8c9758c4b56e8af904e3e536e743a0a6fdbbf8478afba4baee92e13fc1b3073376ac6bf4a7948e

  • memory/1584-58-0x0000000000AA0000-0x0000000000AA8000-memory.dmp

    Filesize

    32KB

  • memory/1584-62-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/1584-59-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2216-67-0x0000000004820000-0x0000000004860000-memory.dmp

    Filesize

    256KB

  • memory/2216-66-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2216-40-0x0000000004820000-0x0000000004860000-memory.dmp

    Filesize

    256KB

  • memory/2216-37-0x0000000000F90000-0x00000000010BC000-memory.dmp

    Filesize

    1.2MB

  • memory/2216-39-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2216-47-0x0000000004820000-0x0000000004860000-memory.dmp

    Filesize

    256KB

  • memory/2216-45-0x00000000047E0000-0x00000000047F0000-memory.dmp

    Filesize

    64KB

  • memory/2216-44-0x0000000000E50000-0x0000000000E68000-memory.dmp

    Filesize

    96KB

  • memory/2216-43-0x0000000004790000-0x00000000047DE000-memory.dmp

    Filesize

    312KB

  • memory/2296-6-0x0000000000900000-0x0000000000908000-memory.dmp

    Filesize

    32KB

  • memory/2296-0-0x0000000001080000-0x00000000011AC000-memory.dmp

    Filesize

    1.2MB

  • memory/2296-5-0x00000000008A0000-0x00000000008B2000-memory.dmp

    Filesize

    72KB

  • memory/2296-2-0x0000000004990000-0x00000000049D0000-memory.dmp

    Filesize

    256KB

  • memory/2296-4-0x0000000000410000-0x000000000046C000-memory.dmp

    Filesize

    368KB

  • memory/2296-1-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2296-3-0x0000000000390000-0x000000000039E000-memory.dmp

    Filesize

    56KB

  • memory/2296-7-0x0000000000950000-0x0000000000958000-memory.dmp

    Filesize

    32KB

  • memory/2296-38-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2332-68-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2332-63-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2608-65-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2608-54-0x0000000074420000-0x0000000074B0E000-memory.dmp

    Filesize

    6.9MB

  • memory/2608-60-0x0000000000EA0000-0x0000000000EE0000-memory.dmp

    Filesize

    256KB

  • memory/2632-24-0x0000000000F40000-0x0000000000F4C000-memory.dmp

    Filesize

    48KB

  • memory/2632-25-0x000007FEF49D0000-0x000007FEF53BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2632-26-0x0000000019920000-0x00000000199A0000-memory.dmp

    Filesize

    512KB

  • memory/2632-64-0x000007FEF49D0000-0x000007FEF53BC000-memory.dmp

    Filesize

    9.9MB

  • memory/2864-19-0x000000001B060000-0x000000001B0E0000-memory.dmp

    Filesize

    512KB

  • memory/2864-17-0x0000000000860000-0x000000000086C000-memory.dmp

    Filesize

    48KB

  • memory/2864-18-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

    Filesize

    9.9MB

  • memory/2864-22-0x000007FEF53C0000-0x000007FEF5DAC000-memory.dmp

    Filesize

    9.9MB