Analysis

  • max time kernel
    93s
  • max time network
    102s
  • 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 14:41

General

  • Target

    e5c612458a891a7883c1c48612d45e8c1494321c449f850aec04a9c347c01923.exe

  • Size

    390KB

  • MD5

    a61860e24f9f77955f853220676e6d82

  • SHA1

    1b19a649866c099c56faed53a0e89e3c4d0b131c

  • SHA256

    e5c612458a891a7883c1c48612d45e8c1494321c449f850aec04a9c347c01923

  • SHA512

    018060673f7958cf85419dffc4f0e50d847648642a544927478b0ea52121ef6681b84225e7f7f42ddf0cb40939adb283526c42a3328eec9b09063fdfe5b9e202

  • SSDEEP

    6144:4xd7zBpL5aUyAUCjZBLnk8OEvKEWV1S2Q4r8GYYRFAfHUq9dJeq7Vrkcaveei8Yt:4RpUUyOHVeS2Tr8Fmq9CAmi8YEO

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 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e5c612458a891a7883c1c48612d45e8c1494321c449f850aec04a9c347c01923.exe
    "C:\Users\Admin\AppData\Local\Temp\e5c612458a891a7883c1c48612d45e8c1494321c449f850aec04a9c347c01923.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:5096
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:1904
      • 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:2688

    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/2688-1-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/2688-3-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/2688-4-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/2688-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/2688-77-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/5096-0-0x0000000001110000-0x0000000001111000-memory.dmp

      Filesize

      4KB