Analysis

  • max time kernel
    121s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    31/05/2021, 12:01

General

  • Target
    HalkbankEkstre310521657876007850.exe
  • Size 160KB
  • Sample210531-sy49cs596x
  • SHA256 6707f8585bc86cee81fa957414be0bcfc707b1786d372b057de4cc0f30d2af08
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • azorult

C2
  • http://ppdb.smkn1cilegon.sch.id/huPl/index.php

Signatures

  • Azorult

    An information stealer that was first discovered in 2016, targeting browsing history and passwords.

  • Loads dropped DLL 8 IoCs
  • Reads local data of messenger clients 2 TTPs

    Infostealers often target stored data of messaging applications, which can include saved credentials and account information.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 3 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe
    "C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:3616
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
      "C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"
      2⤵
        PID:2076
      • C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe
        "C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"
        2⤵
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:2720
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
          "C:\Users\Admin\AppData\Local\Temp\HalkbankEkstre310521657876007850.exe"
          3⤵
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:2760

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/2760-122-0x0000000000400000-0x0000000000420000-memory.dmp