Analysis

  • max time kernel
    146s
  • max time network
    151s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240709-en
  • resource tags

    arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    15-07-2024 15:42

General

  • Target

    dcdeb43146615a2e6a8fc98ce12c8f585c5cfbfee62d0331184332e23db1c7f2.exe

  • Size

    390KB

  • MD5

    769a82ad7992838affa06c4631ac53a3

  • SHA1

    dd09f52ff4135ad75a79bcd74dac4b31b17db442

  • SHA256

    dcdeb43146615a2e6a8fc98ce12c8f585c5cfbfee62d0331184332e23db1c7f2

  • SHA512

    c8eff45916f0d249117d502d195981bd1410daa2de1f895caabd2829c944343f7311ce1c82f6d397a23ea170ecf76cc00faea611349e3aa01636a84960bac0f9

  • SSDEEP

    6144:AnstlV5J3lHyo8/FPwHf5MO6vKbhwwzsbFpXfx62ksFElNIXjgaeei88EO:AY5rHyDU/wlvU86NIXjni88EO

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 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dcdeb43146615a2e6a8fc98ce12c8f585c5cfbfee62d0331184332e23db1c7f2.exe
    "C:\Users\Admin\AppData\Local\Temp\dcdeb43146615a2e6a8fc98ce12c8f585c5cfbfee62d0331184332e23db1c7f2.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1572
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:3240
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        2⤵
          PID:3280
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
          "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
          2⤵
            PID:1652
          • 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:1496

        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/1496-0-0x0000000000400000-0x000000000063C000-memory.dmp

          Filesize

          2.2MB

        • memory/1496-3-0x0000000000400000-0x000000000063C000-memory.dmp

          Filesize

          2.2MB

        • memory/1496-4-0x0000000000400000-0x000000000063C000-memory.dmp

          Filesize

          2.2MB

        • memory/1496-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/1496-77-0x0000000000400000-0x000000000063C000-memory.dmp

          Filesize

          2.2MB

        • memory/1572-1-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

          Filesize

          4KB