Resubmissions

02/03/2024, 22:38

240302-2kwptaae3710

02/03/2024, 22:34

240302-2g86qsad9610

Analysis

  • max time kernel
    151s
  • max time network
    156s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    02/03/2024, 22:34

General

  • Target
    Fake AV/FileFixPro/FFProInstall.exe
  • Size 455KB
  • Sample240302-2g86qsad96
  • SHA256 25f1979680c26601156c6ba3ad931b555b3f1ce82bf3546f8bf7d6241d3962d8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates connected drives 3 TTPs 23 IoCs

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

  • Drops file in System32 directory 13 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Fake AV\FileFixPro\FFProInstall.exe
    "C:\Users\Admin\AppData\Local\Temp\Fake AV\FileFixPro\FFProInstall.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4356
    • C:\Users\Admin\AppData\Local\Temp\is-CB1BD.tmp\is-MLOMF.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-CB1BD.tmp\is-MLOMF.tmp" /SL4 $301CA "C:\Users\Admin\AppData\Local\Temp\Fake AV\FileFixPro\FFProInstall.exe" 232353 52224
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:3536
      • C:\Program Files (x86)\FileFix Professional 2009\wizard.exe
        "C:\Program Files (x86)\FileFix Professional 2009\wizard.exe"
        3⤵
        • Executes dropped EXE
        • Enumerates connected drives
        • Drops file in System32 directory
        • Drops file in Program Files directory
        • Drops file in Windows directory
        PID:2312

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        wizard.exe

        • Path C:\Program Files (x86)\FileFix Professional 2009\wizard.exe
        • Size 612KB
        • SHA256 c28ac5f267bec7650ce271c12b23f087f9c3927a46b48682e363581fa29e2a5d
        • MD5 SHA1 SHA512 SSDEEP

        is-MLOMF.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-CB1BD.tmp\is-MLOMF.tmp
        • Size 648KB
        • SHA256 bee86b674d51b4e21822e44f9408a69d60e282e39f5897888df334c74d840aa4
        • MD5 SHA1 SHA512 SSDEEP

        memory/3536-6-0x00000000007B0000-0x00000000007B1000-memory.dmp

        memory/3536-13-0x0000000000400000-0x00000000004B1000-memory.dmp

        memory/3536-16-0x00000000007B0000-0x00000000007B1000-memory.dmp

        memory/3536-37-0x0000000000400000-0x00000000004B1000-memory.dmp

        memory/3536-44-0x0000000000400000-0x00000000004B1000-memory.dmp

        memory/4356-0-0x0000000000400000-0x0000000000413000-memory.dmp

        memory/4356-12-0x0000000000400000-0x0000000000413000-memory.dmp

        memory/4356-45-0x0000000000400000-0x0000000000413000-memory.dmp