Analysis

  • max time kernel
    141s
  • max time network
    137s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    15-05-2021 00:25

General

  • Target

    fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7.exe

  • Size

    230KB

  • MD5

    9dc135d8f028fb7c70933fdec936f419

  • SHA1

    d5e61fbc352fc2dc8d1b8f234801b96e7b3cd04f

  • SHA256

    fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7

  • SHA512

    95f2462cd33328ace30978f40619b0dfb329915bd68befa2cf62616658ee6444a367fd77ac2b8477eef0fcaf5a4c1c38191c1f07f511e34abd3bbe633fa6f4b7

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
  • 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\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7.exe
    "C:\Users\Admin\AppData\Local\Temp\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Users\Admin\AppData\Local\Temp\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7Srv.exe
      C:\Users\Admin\AppData\Local\Temp\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7Srv.exe
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Drops file in Program Files directory
      • Suspicious use of WriteProcessMemory
      PID:1516
      • 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:2000
        • 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:1200
          • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
            "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1200 CREDAT:275457 /prefetch:2
            5⤵
            • Modifies Internet Explorer settings
            • Suspicious use of SetWindowsHookEx
            PID:1444

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

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\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Users\Admin\AppData\Local\Temp\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\L23XBGLW.txt
    MD5

    b583337ccafc8bc2b869e2640d88b114

    SHA1

    4dc71cdc024f89536e8d61f82f1f39005ed19970

    SHA256

    439b66e35c64d0b644b86cde74f033855b0ea0b526cd0dfb1da8ad80865941a1

    SHA512

    7d61b4701f8a02037ce4a0d8228c53436ee1d60b27dfd6ee69c936ae1da5b1020d87684e3603d22b666d57cb29f1c3c86bf1c8163bea739384d3f6bc9d6a041c

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

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • \Users\Admin\AppData\Local\Temp\fcaf8d356cd9c31dc8c05093f18532a8ed9a356a435570554e6ac211f19a95f7Srv.exe
    MD5

    da18881ccaefeaa4942af9291cb34826

    SHA1

    e4f33c21684bede05ccea60dd0767250ff2b3aba

    SHA256

    1d736643af18fe45f74f67a68c3268b39e7dbd84aaaf46dba5e23e48e8402842

    SHA512

    2420cf80794f4e74fb95934698714d4386e022d68c0c4e181d9d6e189bf3fab09f920e6e9128e423a1dbf357558bab628133d1084a7a306617c3a9c2461a5901

  • memory/1084-60-0x00000000752F1000-0x00000000752F3000-memory.dmp
    Filesize

    8KB

  • memory/1200-72-0x0000000000000000-mapping.dmp
  • memory/1200-80-0x0000000003F20000-0x0000000003F21000-memory.dmp
    Filesize

    4KB

  • memory/1444-75-0x0000000002140000-0x0000000002142000-memory.dmp
    Filesize

    8KB

  • memory/1444-73-0x0000000000000000-mapping.dmp
  • memory/1516-77-0x0000000000400000-0x000000000042E000-memory.dmp
    Filesize

    184KB

  • memory/1516-76-0x0000000000230000-0x000000000023F000-memory.dmp
    Filesize

    60KB

  • memory/1516-62-0x0000000000000000-mapping.dmp
  • memory/2000-71-0x0000000000240000-0x0000000000241000-memory.dmp
    Filesize

    4KB

  • memory/2000-67-0x0000000000000000-mapping.dmp