Analysis

  • max time kernel
    142s
  • max time network
    135s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240419-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
  • submitted
    05/05/2024, 19:11

General

  • Target

    17aee2f8a490eb8f5ae8d66e449dc8ca50d430a210f3bc101a6b04ff5f4a5deb.exe

  • Size

    325KB

  • MD5

    9152a9f583a0fa78948361d073385d69

  • SHA1

    a1fd6c642e26be0cbde469d442a8091b04c441db

  • SHA256

    17aee2f8a490eb8f5ae8d66e449dc8ca50d430a210f3bc101a6b04ff5f4a5deb

  • SHA512

    fd909b0b2b7eb1c0e6d99b11d6cce112ea2ef677400680c6ca1e678e504590e63f5ac8f057097b45b0ea3a9b6583ea05f1a14d34eabaf1907e9c4e51d20cfa44

  • SSDEEP

    3072:IcWDjPBDfpm3DX18blsV+GxuCa41l7+v6XCW5DZg9jzkDaVuvrOY9g3U5pRyFusw:0LcTaGVK27+vDBVmrOv3Uv6b/5

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.150

Attributes
  • url_path

    /c698e1bc8a2f5e6d.php

Signatures

  • Stealc

    Stealc is an infostealer written in C++.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 8 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 8 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 7 IoCs
  • 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.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 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

Processes

  • C:\Users\Admin\AppData\Local\Temp\17aee2f8a490eb8f5ae8d66e449dc8ca50d430a210f3bc101a6b04ff5f4a5deb.exe
    "C:\Users\Admin\AppData\Local\Temp\17aee2f8a490eb8f5ae8d66e449dc8ca50d430a210f3bc101a6b04ff5f4a5deb.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    PID:3984
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3984 -s 2336
      2⤵
      • Program crash
      PID:4184
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3984 -ip 3984
    1⤵
      PID:3788

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • C:\ProgramData\Are.docx

            Filesize

            11KB

            MD5

            a33e5b189842c5867f46566bdbf7a095

            SHA1

            e1c06359f6a76da90d19e8fd95e79c832edb3196

            SHA256

            5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

            SHA512

            f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

          • 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/3984-4-0x0000000000400000-0x0000000001A1B000-memory.dmp

            Filesize

            22.1MB

          • memory/3984-5-0x0000000001BC0000-0x0000000001CC0000-memory.dmp

            Filesize

            1024KB

          • memory/3984-7-0x0000000000400000-0x000000000063B000-memory.dmp

            Filesize

            2.2MB

          • memory/3984-9-0x0000000061E00000-0x0000000061EF3000-memory.dmp

            Filesize

            972KB

          • memory/3984-48-0x0000000000400000-0x0000000001A1B000-memory.dmp

            Filesize

            22.1MB

          • memory/3984-55-0x0000000000400000-0x0000000001A1B000-memory.dmp

            Filesize

            22.1MB

          • memory/3984-3-0x0000000000400000-0x000000000063B000-memory.dmp

            Filesize

            2.2MB

          • memory/3984-1-0x0000000001BC0000-0x0000000001CC0000-memory.dmp

            Filesize

            1024KB

          • memory/3984-82-0x0000000000400000-0x0000000001A1B000-memory.dmp

            Filesize

            22.1MB

          • memory/3984-2-0x0000000001B80000-0x0000000001BA7000-memory.dmp

            Filesize

            156KB

          • memory/3984-101-0x0000000000400000-0x000000000063B000-memory.dmp

            Filesize

            2.2MB

          • memory/3984-100-0x0000000000400000-0x0000000001A1B000-memory.dmp

            Filesize

            22.1MB