Analysis

  • max time kernel
    115s
  • max time network
    120s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13-09-2024 21:09

General

  • Target

    6a4993eb98ba2110c38f2ee3cd1e6c30N.dll

  • Size

    315KB

  • MD5

    6a4993eb98ba2110c38f2ee3cd1e6c30

  • SHA1

    b03cfd7357ebdc67d54e66715ca9e67d84596633

  • SHA256

    d18160fadce7be45886041bcb69012aeca040e23104a09dc4758ab9b95959438

  • SHA512

    3595ad7cef5db6b2800ec0e3a2671c9c807be079fbf68bc8e84b39db2f5b75e1cdc0acf31f45ef861a442f5acbe9fb82a993e05f1e82b8cecd4de0a0eaa17336

  • SSDEEP

    6144:biu11Om4UTuNoor5B8riGD4VhkdGGzaDiBV+UdvrEFp7hKfui7:biu11Om4ceb8rvFdGGzaDiBjvrEH7A

Malware Config

Signatures

  • Floxif, Floodfix

    Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.

  • Detects Floxif payload 1 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Loads dropped DLL 1 IoCs
  • UPX packed file 3 IoCs

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

  • Drops file in Program Files directory 1 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\6a4993eb98ba2110c38f2ee3cd1e6c30N.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\6a4993eb98ba2110c38f2ee3cd1e6c30N.dll,#1
      2⤵
      • Loads dropped DLL
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      PID:2964
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2964 -s 712
        3⤵
        • Program crash
        PID:2076
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 2964 -ip 2964
    1⤵
      PID:2284
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=3836,i,11391966286255097843,10588851088187498028,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:8
      1⤵
        PID:3472

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Program Files\Common Files\System\symsrv.dll

        Filesize

        67KB

        MD5

        7574cf2c64f35161ab1292e2f532aabf

        SHA1

        14ba3fa927a06224dfe587014299e834def4644f

        SHA256

        de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

        SHA512

        4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

      • memory/2964-2-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2964-6-0x0000000075620000-0x000000007565D000-memory.dmp

        Filesize

        244KB

      • memory/2964-8-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB