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Analysis

  • max time kernel
    16s
  • max time network
    145s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241023-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    06/11/2024, 02:10

General

  • Target

    102924_5830760.exe

  • Size

    810KB

  • MD5

    f7fc33c3bcded454047a6bfaf99f1452

  • SHA1

    a23a2448f373a4319fc0722b72595815d27c62c6

  • SHA256

    f392bfa146ad86308fa464a9505708645f99618d54483cbc6b746b656f26a3fb

  • SHA512

    0211b32321c50653fbf67190cd24455d997016f7cc9fe7e86457dfeda647ba326c2e0c2fa5d352a98ef4ec82724cd7ab50dc9988cb7e354f99623e0aa6740d29

  • SSDEEP

    24576:pG+yftcZ0DbBTVsVQ7LE8oy9jRKta3uja581Cj:wPcZ0BuO7L7o/a5

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 2 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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.

Processes

  • C:\Users\Admin\AppData\Local\Temp\102924_5830760.exe
    "C:\Users\Admin\AppData\Local\Temp\102924_5830760.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    PID:896
    • C:\Users\Admin\AppData\Local\Temp\102924_5830760.exe
      "C:\Users\Admin\AppData\Local\Temp\102924_5830760.exe"
      2⤵
        PID:2988

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\nsi739B.tmp\System.dll

      Filesize

      12KB

      MD5

      192639861e3dc2dc5c08bb8f8c7260d5

      SHA1

      58d30e460609e22fa0098bc27d928b689ef9af78

      SHA256

      23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6

      SHA512

      6e573d8b2ef6ed719e271fd0b2fd9cd451f61fc9a9459330108d6d7a65a0f64016303318cad787aa1d5334ba670d8f1c7c13074e1be550b4a316963ecc465cdc

    • C:\Windows\Resources\primy.ini

      Filesize

      33B

      MD5

      76d9175a3db7407eb0bfc3c07ddcd9d2

      SHA1

      72071127e9a44935cb02650ed715ccaf6a8f8418

      SHA256

      1f7119996dd17af05bf05e497104715bbbc3909676afa4329fbd59502be1a1a5

      SHA512

      5032dab71e70a4bd1dad2f5cf9380e0097be7993bc46886fed6e4bdd8781f2b10d31338d90d0dc5804665bda2cbfe93f1172250e1a8ab7c9118baf9f156e3c69

    • memory/896-23237-0x0000000003830000-0x00000000045E5000-memory.dmp

      Filesize

      13.7MB

    • memory/896-23238-0x00000000771A1000-0x00000000772C1000-memory.dmp

      Filesize

      1.1MB

    • memory/896-23239-0x0000000073E45000-0x0000000073E46000-memory.dmp

      Filesize

      4KB

    • memory/896-23240-0x0000000003830000-0x00000000045E5000-memory.dmp

      Filesize

      13.7MB

    • memory/2988-23248-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23252-0x00000000771A1000-0x00000000772C1000-memory.dmp

      Filesize

      1.1MB

    • memory/2988-23243-0x0000000077228000-0x0000000077229000-memory.dmp

      Filesize

      4KB

    • memory/2988-23244-0x0000000077245000-0x0000000077246000-memory.dmp

      Filesize

      4KB

    • memory/2988-23241-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23249-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

    • memory/2988-23250-0x0000000001660000-0x0000000002415000-memory.dmp

      Filesize

      13.7MB

    • memory/2988-23242-0x0000000001660000-0x0000000002415000-memory.dmp

      Filesize

      13.7MB

    • memory/2988-23251-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23253-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23254-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB

    • memory/2988-23255-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23256-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23257-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23261-0x0000000000400000-0x0000000001653000-memory.dmp

      Filesize

      18.3MB

    • memory/2988-23262-0x0000000000401000-0x0000000000404000-memory.dmp

      Filesize

      12KB