Analysis

  • max time kernel
    77s
  • max time network
    79s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    17/12/2020, 07:47

General

  • Target
    http___webmaildocumentdownload.duckdns.org_win10.exe
  • Size 508KB
  • Sample201217-67nydfd3dj
  • SHA256 5822fa47a5eab9578ec51ee113a156f455c6c8f60ce80d084663c2f31fe25e91
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • azorult

C2
  • http://195.245.112.115/index.php

Signatures

  • Azorult

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

  • Loads dropped DLL 16 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses cryptocurrency files/wallets, 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.

  • JavaScript code in executable 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\http___webmaildocumentdownload.duckdns.org_win10.exe
    "C:\Users\Admin\AppData\Local\Temp\http___webmaildocumentdownload.duckdns.org_win10.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1744
    • C:\Users\Admin\AppData\Local\Temp\http___webmaildocumentdownload.duckdns.org_win10.exe
      "{path}"
      2⤵
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1648

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1648-215-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/1648-217-0x0000000000400000-0x0000000000420000-memory.dmp

        memory/1744-114-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-51-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-151-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-161-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-180-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-182-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-184-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-186-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-196-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-200-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-198-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-210-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-212-0x00000000005B0000-0x00000000005BE000-memory.dmp

        memory/1744-213-0x00000000055A0000-0x00000000055F6000-memory.dmp

        memory/1744-145-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-143-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-141-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-3-0x0000000000C70000-0x0000000000C71000-memory.dmp

        memory/1744-133-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-131-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-129-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-2-0x00000000741A0000-0x000000007488E000-memory.dmp

        memory/1744-110-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-104-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-85-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-149-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-49-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-47-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-38-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-36-0x0000000000950000-0x0000000000991000-memory.dmp

        memory/1744-11-0x0000000000900000-0x0000000000911000-memory.dmp

        memory/1744-6-0x0000000000900000-0x0000000000911000-memory.dmp

        memory/1744-5-0x00000000004F0000-0x0000000000542000-memory.dmp

        memory/1996-218-0x000007FEF7730000-0x000007FEF79AA000-memory.dmp