Analysis

  • max time kernel
    101s
  • max time network
    103s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    04-04-2021 11:53

General

  • Target

    AFE.tmp.exe

  • Size

    378KB

  • MD5

    98d0976214fb5720a6b2c23ba035b741

  • SHA1

    1eb4da1f7de4ca6718d75c6ac713b6324948ad6c

  • SHA256

    553e5fd6df66c3d38733e1942ffbf2557843fc19c48fa1a2379eee9eb528c144

  • SHA512

    4a1bf187b5483d70925cb1ae91090f2abde87ecd115d298f01e0c9c0b9bf428c53b3db6c6173aaf4b96cc345b093cd95cf2641894dc7b1edfdc2689ef6582925

Malware Config

Signatures

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\AFE.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\AFE.tmp.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1456
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\AFE.tmp.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1052
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:632

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/632-5-0x0000000000000000-mapping.dmp

  • memory/1052-4-0x0000000000000000-mapping.dmp

  • memory/1456-2-0x00000000076A0000-0x000000000CB1C000-memory.dmp

    Filesize

    84.5MB

  • memory/1456-3-0x0000000000400000-0x000000000587C000-memory.dmp

    Filesize

    84.5MB