Overview

overview

8

Static

static

BA062ECC79...0B.exe

windows7_x64

8

BA062ECC79...0B.exe

windows10_x64

8

Analysis

  • max time kernel
    152s
  • max time network
    151s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    24/03/2021, 07:13

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General

  • Target
    BA062ECC79AEDCFA821065737035E20B.exe
  • Size 1.2MB
  • Sample210324-ely6xxf8qa
  • SHA256 ddd019669afb9f1adad82d960f9e6edc9329e80d91cf7e5b3f1da8698518ec00
  • MD5 SHA1 SHA512
Score
8/10
evasionpersistence

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Modifies Windows Firewall 1 TTPs
    evasion
  • Drops startup file 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Drops autorun.inf file 1 TTPs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of NtSetInformationThreadHideFromDebugger 16 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 34 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\BA062ECC79AEDCFA821065737035E20B.exe
    "C:\Users\Admin\AppData\Local\Temp\BA062ECC79AEDCFA821065737035E20B.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3132
    • C:\Users\Admin\AppData\Local\Temp\chrome.exe
      "C:\Users\Admin\AppData\Local\Temp\chrome.exe"
      2⤵
      • Executes dropped EXE
      • Drops startup file
      • Adds Run key to start application
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3172
      • C:\Windows\SysWOW64\netsh.exe
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\chrome.exe" "chrome.exe" ENABLE
        3⤵
          PID:4048
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /IM Exsample.exe
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3712

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/3132-2-0x0000000003C70000-0x0000000003C71000-memory.dmp
          Download

          memory/3132-3-0x0000000003E70000-0x0000000003E71000-memory.dmp
          Download

          memory/3132-4-0x0000000004070000-0x0000000004071000-memory.dmp
          Download

          memory/3132-6-0x0000000003490000-0x0000000003491000-memory.dmp
          Download

          memory/3172-10-0x00000000036B0000-0x00000000036B1000-memory.dmp
          Download

          memory/3172-11-0x00000000038B0000-0x00000000038B1000-memory.dmp
          Download

          memory/3172-15-0x0000000003C10000-0x0000000003C11000-memory.dmp
          Download