Analysis

  • max time kernel
    119s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    26-12-2024 19:39

General

  • Target

    Justificante de Transferencia.exe

  • Size

    276KB

  • MD5

    d9d7ed1ebbeb8032c492788c827b5575

  • SHA1

    50ede747462811dcd8a6a1c7d90badce6821f4c6

  • SHA256

    dbab95bfe56a7e0a0425eb323f49f545f236168494f79e440279470d0af5652f

  • SHA512

    e11c47554f83674a63d1c41928914ceda1c728c635241a3556e2fdd745d42d245bc4c029068abf9e2d42e9d43cd0c58dd208533c3a914b2a8dc7bd702d154314

  • SSDEEP

    6144:91ssj6pU6jKfwAf17mUFEuwMMMMMMMMMMMMMMMMMMYMMMMMMMMMMMMMMMMMMUo+9:4sW/2wAf17FGMMMMMMMMMMMMMMMMMMYi

Malware Config

Signatures

  • Guloader family
  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Drops file in System32 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\Justificante de Transferencia.exe
    "C:\Users\Admin\AppData\Local\Temp\Justificante de Transferencia.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in System32 directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    PID:1076

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • \Users\Admin\AppData\Local\Temp\nsjAEF6.tmp\System.dll

    Filesize

    12KB

    MD5

    792b6f86e296d3904285b2bf67ccd7e0

    SHA1

    966b16f84697552747e0ddd19a4ba8ab5083af31

    SHA256

    c7a20bcaa0197aedddc8e4797bbb33fdf70d980f5e83c203d148121c2106d917

    SHA512

    97edc3410b88ca31abc0af0324258d2b59127047810947d0fb5e7e12957db34d206ffd70a0456add3a26b0546643ff0234124b08423c2c9ffe9bdec6eb210f2c

  • memory/1076-12-0x00000000037D0000-0x00000000038D0000-memory.dmp

    Filesize

    1024KB

  • memory/1076-13-0x00000000037D0000-0x00000000038D0000-memory.dmp

    Filesize

    1024KB