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Analysis

  • max time kernel
    96s
  • max time network
    97s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07/08/2024, 21:27

General

  • Target

    b62680b8768ca5a64eabdcfdb1c6000db2a79fc98ca6f95c669c31fa3a6fb331.exe

  • Size

    2.4MB

  • MD5

    b9e1b2e0323465df8cadc0bf505b2e78

  • SHA1

    66173d349adc5e461e52e03993a240596a0b89d9

  • SHA256

    b62680b8768ca5a64eabdcfdb1c6000db2a79fc98ca6f95c669c31fa3a6fb331

  • SHA512

    5e67ffb7ffe102898f313bde9c9cfe4e5087a9a2cbafbbe109b8a84ccbfccbd997019cad1523bb2ef07cd8f0eb962a14c80c611b517af087235918e1e29df629

  • SSDEEP

    49152:l2lxRQ63bdjt5/SJ2tFgUl+oYBpacDF1zchY2mSJ+OQY+vtpK:l2l7jvSmFsPBUE1zcO92+OQY+vT

Malware Config

Extracted

Family

stealc

Botnet

default

C2

http://185.215.113.24

Attributes
  • url_path

    /e2b1563c6670f193.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • 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.

  • Unsecured Credentials: Credentials In Files 1 TTPs

    Steal credentials from unsecured files.

  • 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 NtSetInformationThreadHideFromDebugger 3 IoCs
  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 SetWindowsHookEx 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b62680b8768ca5a64eabdcfdb1c6000db2a79fc98ca6f95c669c31fa3a6fb331.exe
    "C:\Users\Admin\AppData\Local\Temp\b62680b8768ca5a64eabdcfdb1c6000db2a79fc98ca6f95c669c31fa3a6fb331.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:1032
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1032 -s 2260
      2⤵
      • Program crash
      PID:4948
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1032 -ip 1032
    1⤵
      PID:3144

    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/1032-48-0x0000000000400000-0x0000000000FF5000-memory.dmp

      Filesize

      12.0MB

    • memory/1032-5-0x0000000000400000-0x0000000000643000-memory.dmp

      Filesize

      2.3MB

    • memory/1032-3-0x00000000013D0000-0x00000000015D0000-memory.dmp

      Filesize

      2.0MB

    • memory/1032-6-0x0000000061E00000-0x0000000061EF3000-memory.dmp

      Filesize

      972KB

    • memory/1032-0-0x0000000000400000-0x0000000000FF5000-memory.dmp

      Filesize

      12.0MB

    • memory/1032-4-0x0000000001380000-0x00000000013B0000-memory.dmp

      Filesize

      192KB

    • memory/1032-1-0x000000007FA70000-0x000000007FE41000-memory.dmp

      Filesize

      3.8MB

    • memory/1032-79-0x0000000000400000-0x0000000000FF5000-memory.dmp

      Filesize

      12.0MB

    • memory/1032-80-0x0000000000400000-0x0000000000FF5000-memory.dmp

      Filesize

      12.0MB

    • memory/1032-82-0x000000007FA70000-0x000000007FE41000-memory.dmp

      Filesize

      3.8MB

    • memory/1032-83-0x0000000000400000-0x0000000000643000-memory.dmp

      Filesize

      2.3MB