Analysis

  • max time kernel
    93s
  • max time network
    95s
  • 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 11:37

General

  • Target

    21894542ae0b827f6c9c60996bf82f3bd83600e090aee28ea6949b95e7a5b326.exe

  • Size

    389KB

  • MD5

    7a23edb1fab8654d2544cabde1a85dfa

  • SHA1

    cc63eb14433a9b445fb2b3c5435464fedf9bfaf4

  • SHA256

    21894542ae0b827f6c9c60996bf82f3bd83600e090aee28ea6949b95e7a5b326

  • SHA512

    b5e2043e8c6a0905b9da735df233d29fa8fdc739c8c383373299a152b5da73690072b7fe2b0b4f44337c6b3f04630615481c7b23db9af83e7ceb7601ee538dc6

  • SSDEEP

    6144:zlIL5yciFkeLnCUcx/IcoN6O2MW64nN6j1fAWnD1xv02di8QEO:zqiFHnC59TNWfjnHi8QEO

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\21894542ae0b827f6c9c60996bf82f3bd83600e090aee28ea6949b95e7a5b326.exe
    "C:\Users\Admin\AppData\Local\Temp\21894542ae0b827f6c9c60996bf82f3bd83600e090aee28ea6949b95e7a5b326.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4904
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
        PID:1636
      • 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:3568

    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/3568-1-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/3568-3-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/3568-4-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/3568-5-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/3568-77-0x0000000000400000-0x000000000063C000-memory.dmp

      Filesize

      2.2MB

    • memory/4904-0-0x00000000010D0000-0x00000000010D1000-memory.dmp

      Filesize

      4KB