Analysis

  • max time kernel
    117s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    20-12-2024 04:53

General

  • Target

    a142a6652117f4a2e01caaaf8a273384494292bb98efd2524b36b119201477e9.exe

  • Size

    3.8MB

  • MD5

    8eca649f7af62e1aec1c09064da100df

  • SHA1

    f20108f98b2a2bfecb8c365da01d08d71c00a3dc

  • SHA256

    a142a6652117f4a2e01caaaf8a273384494292bb98efd2524b36b119201477e9

  • SHA512

    1a77e97f1f18e9f9f6a212eb34951feb355aa6f47b071b6a6a10d82e2bb9e1545acadc5fccb2f118bd66b0eeb90c5be8f72e5cb1a834225203a2f85dc5a93f3a

  • SSDEEP

    49152:VwYCFEJz3sKcA1990FW6drnq9QF/Fs454vn6puWV355FXw/+euWV355FXw/+AuW0:VwYzenA1990FW6drnq9QpFXmv8k

Malware Config

Signatures

  • Floxif family
  • Floxif, Floodfix

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

  • Detects Floxif payload 1 IoCs
  • Possible privilege escalation attempt 4 IoCs
  • ACProtect 1.3x - 1.4x DLL software 1 IoCs

    Detects file using ACProtect software.

  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Modifies file permissions 1 TTPs 4 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • UPX packed file 9 IoCs

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

  • Drops file in Program Files directory 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a142a6652117f4a2e01caaaf8a273384494292bb98efd2524b36b119201477e9.exe
    "C:\Users\Admin\AppData\Local\Temp\a142a6652117f4a2e01caaaf8a273384494292bb98efd2524b36b119201477e9.exe"
    1⤵
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Enumerates connected drives
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Enumerates system info in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2232
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /A /C "cmd.exe /c takeown /f C:\ldrscan\bootwin"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1692
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c takeown /f C:\ldrscan\bootwin
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2752
        • C:\Windows\SysWOW64\takeown.exe
          takeown /f C:\ldrscan\bootwin
          4⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:2816
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /A /C "icacls C:\ldrscan\bootwin /grant *S-1-1-0:(F)"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1748
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\ldrscan\bootwin /grant *S-1-1-0:(F)
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2068
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /A /C "cmd.exe /c takeown /f C:\ldrscan\bootwin"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2096
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /c takeown /f C:\ldrscan\bootwin
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:796
        • C:\Windows\SysWOW64\takeown.exe
          takeown /f C:\ldrscan\bootwin
          4⤵
          • Possible privilege escalation attempt
          • Modifies file permissions
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          PID:560
    • C:\Windows\SysWOW64\cmd.exe
      cmd.exe /A /C "icacls C:\ldrscan\bootwin /grant *S-1-1-0:(F)"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:588
      • C:\Windows\SysWOW64\icacls.exe
        icacls C:\ldrscan\bootwin /grant *S-1-1-0:(F)
        3⤵
        • Possible privilege escalation attempt
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:592
    • C:\Windows\system32\cmd.exe
      cmd.exe /A /C "C:\Windows\System32\cscript.exe //nologo C:\Windows\System32\slmgr.vbs -ilc "C:\Acer.XRM-MS""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2216
      • C:\Windows\System32\cscript.exe
        C:\Windows\System32\cscript.exe //nologo C:\Windows\System32\slmgr.vbs -ilc "C:\Acer.XRM-MS"
        3⤵
          PID:2368
      • C:\Windows\system32\cmd.exe
        cmd.exe /A /C "C:\Windows\System32\cscript.exe //nologo C:\Windows\System32\slmgr.vbs -ipk FJGCP-4DFJD-GJY49-VJBQ7-HYRR2"
        2⤵
        • Suspicious use of WriteProcessMemory
        PID:2140
        • C:\Windows\System32\cscript.exe
          C:\Windows\System32\cscript.exe //nologo C:\Windows\System32\slmgr.vbs -ipk FJGCP-4DFJD-GJY49-VJBQ7-HYRR2
          3⤵
            PID:1984
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /A /C "compact /u \\?\Volume{c8ac9d43-69ed-11ef-93bf-806e6f6e6963}\KUQPH"
          2⤵
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1764
          • C:\Windows\SysWOW64\compact.exe
            compact /u \\?\Volume{c8ac9d43-69ed-11ef-93bf-806e6f6e6963}\KUQPH
            3⤵
            • System Location Discovery: System Language Discovery
            PID:2952
        • C:\Windows\SysWOW64\cmd.exe
          cmd.exe /A /C "C:\bootsect.exe /nt60 SYS /force"
          2⤵
          • System Location Discovery: System Language Discovery
          PID:1932
          • C:\bootsect.exe
            C:\bootsect.exe /nt60 SYS /force
            3⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:1368

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Acer.XRM-MS

        Filesize

        2KB

        MD5

        f25832af6a684360950dbb15589de34a

        SHA1

        17ff1d21005c1695ae3dcbdc3435017c895fff5d

        SHA256

        266d64637cf12ff961165a018f549ff41002dc59380605b36d65cf1b8127c96f

        SHA512

        e0cf23351c02f4afa85eedc72a86b9114f539595cbd6bcd220e8b8d70fa6a7379dcd947ea0d59332ba672f36ebda6bd98892d9b6b20eedafc8be168387a3dd5f

      • C:\Users\Admin\AppData\Local\Temp\A1D26E2\4357A7C8B8.tmp

        Filesize

        3.7MB

        MD5

        e7be2c033c6ab0ba199b4717f98bc947

        SHA1

        6c964ec7100ad55922e186a157a445825998cfa4

        SHA256

        27c81c938edf0a2a06d8d80de7e852a61d8ff89ff17ab69b7818858edaa3c446

        SHA512

        ebec9d725a3c368329fb7c02eafefd69a412e2c871f693bfbdbf4ec5193ced4cb95e6de31e6e5b0ed56215b7bab7d6f851a2a3174314bec63204201848031b7a

      • C:\bootsect.exe

        Filesize

        95KB

        MD5

        952d40ae1ab389a15def901aedc6a422

        SHA1

        d8f96ece4b4205e0e23cabbbfdbfd2a6033e800e

        SHA256

        6e1f12f666051d6e1736c96f8ce58f036346d3885ce2c36102ab69c2d15d492e

        SHA512

        5ae8713ca7f963d33e667e330b77479b11216c107df4e3728fe39a90fbb8ea30fd6bb4bd5b755bea96c468b2e63ae2a5037b51e3dda681c92406ecd634d07856

      • \??\Volume{c8ac9d43-69ed-11ef-93bf-806e6f6e6963}\KUQPH

        Filesize

        357KB

        MD5

        389fa960c6b5d40df0321015362ba9a8

        SHA1

        d1532fbd688cb21446879cc8642b16a3d24ccd93

        SHA256

        c8f3d813baec8ba201e1a2433576d492e0195a0ec3c8cbf9aa212480e36d8a97

        SHA512

        e6e0cd753064d6bbfaa661c09d2133f47002180da6d656748c4cac6b329653720c184b5937a7ca019e177aaf191e88e610d0a7403ca119a8964f1ad2ab35ca3a

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

        Filesize

        67KB

        MD5

        7574cf2c64f35161ab1292e2f532aabf

        SHA1

        14ba3fa927a06224dfe587014299e834def4644f

        SHA256

        de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

        SHA512

        4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

      • memory/1368-100-0x0000000001000000-0x000000000101B000-memory.dmp

        Filesize

        108KB

      • memory/2232-21-0x00000000003B0000-0x00000000003C2000-memory.dmp

        Filesize

        72KB

      • memory/2232-86-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2232-37-0x00000000007C0000-0x00000000007D1000-memory.dmp

        Filesize

        68KB

      • memory/2232-29-0x00000000003D0000-0x00000000003F1000-memory.dmp

        Filesize

        132KB

      • memory/2232-4-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2232-16-0x00000000003A0000-0x00000000003B0000-memory.dmp

        Filesize

        64KB

      • memory/2232-53-0x00000000007F0000-0x0000000000800000-memory.dmp

        Filesize

        64KB

      • memory/2232-83-0x0000000000400000-0x0000000000623000-memory.dmp

        Filesize

        2.1MB

      • memory/2232-61-0x0000000000A20000-0x0000000000A40000-memory.dmp

        Filesize

        128KB

      • memory/2232-45-0x00000000007E0000-0x00000000007F0000-memory.dmp

        Filesize

        64KB

      • memory/2232-87-0x0000000000400000-0x0000000000623000-memory.dmp

        Filesize

        2.1MB

      • memory/2232-89-0x0000000075C56000-0x0000000075C57000-memory.dmp

        Filesize

        4KB

      • memory/2232-69-0x0000000003330000-0x00000000034C8000-memory.dmp

        Filesize

        1.6MB

      • memory/2232-8-0x0000000000380000-0x0000000000393000-memory.dmp

        Filesize

        76KB

      • memory/2232-3-0x0000000000400000-0x0000000000623000-memory.dmp

        Filesize

        2.1MB

      • memory/2232-103-0x0000000010000000-0x0000000010030000-memory.dmp

        Filesize

        192KB

      • memory/2232-104-0x0000000000400000-0x0000000000623000-memory.dmp

        Filesize

        2.1MB