Analysis

  • max time kernel
    141s
  • max time network
    135s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    13-05-2021 15:36

General

  • Target

    65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0.exe

  • Size

    617KB

  • MD5

    3835ea21eec2887fe431aaafee03764e

  • SHA1

    1a9894bcaa6760197c3a57ba14376dc62ac9df80

  • SHA256

    65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0

  • SHA512

    7b4dea6bf962b6d34d35f165d9575189cf8a18494d89066e7eb7bda98214022a97faac106782bd9f03946d551c8a95650cd59153d1f9cd3804c5d999aa374ce2

Malware Config

Signatures

  • Ramnit

    Ramnit is a versatile family that holds viruses, worms, and Trojans.

  • Executes dropped EXE 2 IoCs
  • UPX packed file 7 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Modifies Internet Explorer settings 1 TTPs 28 IoCs
  • Modifies registry class 18 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0.exe
    "C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0.exe"
    1⤵
    • Loads dropped DLL
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1420
    • C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0Srv.exe
      C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0Srv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1392
      • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
        "C:\Program Files (x86)\Microsoft\DesktopLayer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1972
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          4⤵
          • Modifies Internet Explorer settings
          • Suspicious behavior: GetForegroundWindowSpam
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:1280
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1280 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1656

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Program Files (x86)\Microsoft\DesktopLayer.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\U1PHA56U.txt
    MD5

    0adcac16ec7b6fcd15ad67a4d6cc8801

    SHA1

    b1e6fe74bb445b79a4b247d53105fb16261dc281

    SHA256

    74082dc73cb4ae2c8d969e7b5b812a212d47ab2bb6127c1a2418ac05532bb9f2

    SHA512

    9291a4b6ca68b9087001151362f2192f2fadf12ad62e08c869bdbcc634a9f45c32ce1f552031a0154008b09efade0d8588a38a278c3c6d00454d96e4c2253aa5

  • \Program Files (x86)\Microsoft\DesktopLayer.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • \Users\Admin\AppData\Local\Temp\65bf28e5161e81dfcfc9c2a3da4d05da7de6802987236e3bb9b98c08bf1b17c0Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • memory/1280-71-0x0000000000000000-mapping.dmp
  • memory/1280-77-0x0000000004220000-0x0000000004221000-memory.dmp
    Filesize

    4KB

  • memory/1392-74-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1392-73-0x00000000001C0000-0x00000000001CF000-memory.dmp
    Filesize

    60KB

  • memory/1392-62-0x0000000074FB1000-0x0000000074FB3000-memory.dmp
    Filesize

    8KB

  • memory/1392-60-0x0000000000000000-mapping.dmp
  • memory/1656-72-0x0000000000000000-mapping.dmp
  • memory/1972-70-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/1972-66-0x0000000000000000-mapping.dmp