Analysis

  • max time kernel
    118s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20231020-en
  • resource tags

    arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
  • submitted
    25/11/2023, 13:22

General

  • Target
    file.exe
  • Size 334KB
  • Sample231125-ql8j8aag46
  • SHA256 760cca934f2fb907c9a7b99dbf5affea9c01e8257b41d67a5ebc4968eebb982f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Downloads MZ/PE file
  • Deletes itself 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Checks installed software on the system 1 TTPs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\file.exe
    "C:\Users\Admin\AppData\Local\Temp\file.exe"
    1⤵
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1576
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c start "" "C:\ProgramData\JEBKJDAFHJ.exe"
      2⤵
        PID:2996
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c timeout /t 5 & del /f /q "C:\Users\Admin\AppData\Local\Temp\file.exe" & del "C:\ProgramData\*.dll"" & exit
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:2872
        • C:\Windows\SysWOW64\timeout.exe
          timeout /t 5
          3⤵
          • Delays execution with timeout.exe
          PID:2760

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          Cab66A1.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Cab66A1.tmp
          • Size 61KB
          • SHA256 6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf
          • MD5 SHA1 SHA512 SSDEEP

          Tar67BD.tmp

          • Path C:\Users\Admin\AppData\Local\Temp\Tar67BD.tmp
          • Size 163KB
          • SHA256 bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5
          • MD5 SHA1 SHA512 SSDEEP

          memory/1576-1-0x0000000002B70000-0x0000000002C70000-memory.dmp

          memory/1576-2-0x0000000000220000-0x0000000000248000-memory.dmp

          memory/1576-3-0x0000000000400000-0x0000000002ACB000-memory.dmp

          memory/1576-124-0x0000000000400000-0x0000000002ACB000-memory.dmp

          memory/1576-144-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          memory/1576-198-0x0000000000400000-0x0000000002ACB000-memory.dmp

          memory/1576-209-0x0000000002B70000-0x0000000002C70000-memory.dmp

          memory/2996-216-0x0000000002310000-0x0000000002311000-memory.dmp