Analysis

  • max time kernel
    122s
  • max time network
    122s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    29/04/2024, 21:15

General

  • Target

    c214b23503c36e25761fafc42d331449.exe

  • Size

    203KB

  • MD5

    c214b23503c36e25761fafc42d331449

  • SHA1

    77bc874a526531686b78d45d715053c8c01efaec

  • SHA256

    a8f650461896b4e0b644582141a6c5ea42c07e9b0dfbd199c5d377eb40b929b5

  • SHA512

    be5da0694f023926ad906ffed8c6835ad1193fcf7073cc831b6f595f9e4794ad14227315932140b102f7c16c10d9889fbaad11b22cd29f4b62c3244a397495ef

  • SSDEEP

    1536:lCZ2z7zKTndklV2Obr4Ji2plguubOyup7h4psUdLYH9xl36Vd5QWPO9mxqnT5ays:WwVt4JitOTpWpsUdUcz5QWPFxqT

Malware Config

Extracted

Family

stealc

Attributes
  • url_path

    /fdca69ae739b4897.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.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c214b23503c36e25761fafc42d331449.exe
    "C:\Users\Admin\AppData\Local\Temp\c214b23503c36e25761fafc42d331449.exe"
    1⤵
    • Loads dropped DLL
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    PID:2860

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\ProgramData\ReceiveDeny.xlsx

          Filesize

          1.2MB

          MD5

          00f3686144ced7fe6251b711b1d55c55

          SHA1

          c1cfb63779f2f620089464b7c5cc9cbf918af0e4

          SHA256

          e29dd36e5c4a2c32e4ba5d4afd157468e4a306c8529e4f291080f66476c4c0e7

          SHA512

          8af81c2754f2390d44e4c4bc7dfebdca7f5f61ac85e508b5c8328d452690af544b3caad50d451b674daa5fed78b0bf7f164e9fd6c904d914dd1ebd9af6905a0e

        • \ProgramData\mozglue.dll

          Filesize

          593KB

          MD5

          c8fd9be83bc728cc04beffafc2907fe9

          SHA1

          95ab9f701e0024cedfbd312bcfe4e726744c4f2e

          SHA256

          ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

          SHA512

          fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

        • \ProgramData\nss3.dll

          Filesize

          2.0MB

          MD5

          1cc453cdf74f31e4d913ff9c10acdde2

          SHA1

          6e85eae544d6e965f15fa5c39700fa7202f3aafe

          SHA256

          ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

          SHA512

          dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

        • memory/2860-2-0x00000000002C0000-0x00000000002E7000-memory.dmp

          Filesize

          156KB

        • memory/2860-1-0x0000000002B80000-0x0000000002C80000-memory.dmp

          Filesize

          1024KB

        • memory/2860-3-0x0000000000400000-0x0000000002AF0000-memory.dmp

          Filesize

          38.9MB

        • memory/2860-19-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          Filesize

          972KB

        • memory/2860-86-0x0000000000400000-0x0000000002AF0000-memory.dmp

          Filesize

          38.9MB

        • memory/2860-108-0x0000000000400000-0x0000000002AF0000-memory.dmp

          Filesize

          38.9MB

        • memory/2860-109-0x0000000002B80000-0x0000000002C80000-memory.dmp

          Filesize

          1024KB