Analysis

  • max time kernel
    91s
  • max time network
    119s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15-07-2024 16:24

General

  • Target

    be4eac364e5c4506c077b8d576dfa2f47f1019f8891bd6132c9f6b808ec1f823.exe

  • Size

    390KB

  • MD5

    aca5a65d7dbf8ee09b7a781dfb6cff20

  • SHA1

    92885dac7af711d7c31e3729d18ac451c45691fd

  • SHA256

    be4eac364e5c4506c077b8d576dfa2f47f1019f8891bd6132c9f6b808ec1f823

  • SHA512

    8573dc2226da13fe9c6de5237b64cb9304f297bbd956f4509f235f5b7bafb0f88c33bbe93832328dd37b49ac693ae9068b658fa07df13c376d705d12ed1e55e4

  • SSDEEP

    6144:ynsRlV5J3lHyo8/FPwHf5MO6vK/clzQuN9Ew4BSKXSvpVqefIXOmmBBzfeei88EO:yk5rHyDU8zQYEw4AJfm+BzDi88EO

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://85.28.47.101

Attributes
  • url_path

    /f3ee98d7eec07fb9.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Downloads MZ/PE file
  • Loads dropped DLL 2 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 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.

  • 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 4 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\be4eac364e5c4506c077b8d576dfa2f47f1019f8891bd6132c9f6b808ec1f823.exe
    "C:\Users\Admin\AppData\Local\Temp\be4eac364e5c4506c077b8d576dfa2f47f1019f8891bd6132c9f6b808ec1f823.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4728
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:3176
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
          PID:1804
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
          • Loads dropped DLL
          • Checks processor information in registry
          • Suspicious behavior: EnumeratesProcesses
          PID:1520

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • C:\ProgramData\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • memory/1520-1-0x0000000000400000-0x000000000063C000-memory.dmp

        Filesize

        2.2MB

      • memory/1520-3-0x0000000000400000-0x000000000063C000-memory.dmp

        Filesize

        2.2MB

      • memory/1520-4-0x0000000000400000-0x000000000063C000-memory.dmp

        Filesize

        2.2MB

      • memory/1520-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/1520-77-0x0000000000400000-0x000000000063C000-memory.dmp

        Filesize

        2.2MB

      • memory/4728-0-0x0000000000990000-0x0000000000991000-memory.dmp

        Filesize

        4KB