Overview

overview

10

Static

static

d8eb1f8dd3...87.exe

windows7_x64

10

d8eb1f8dd3...87.exe

windows10-2004_x64

4

Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    31-01-2022 22:17

Sharing

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General

  • Target

    d8eb1f8dd36d03fb77bd957204cac06f71c45b8bde7f7ea1a10f45bb3b259487.exe

  • Size

    92KB

  • MD5

    232da2765bbf79ea4a51726285cb65d1

  • SHA1

    8bd91761024047cd3360716cc68ebdcf604a1854

  • SHA256

    d8eb1f8dd36d03fb77bd957204cac06f71c45b8bde7f7ea1a10f45bb3b259487

  • SHA512

    7deacbcae42ab0c42e02af455091a254ab37beb5396be8db40a070ffb343c9f400906838d33e597196cbe22626d5789beac83cf0db39832cd4c6a7b407697002

Score
10/10
guloaderdownloaderguloader

Malware Config

Extracted

Family

guloader

C2

https://cdn-12.anonfile.com/RdO1lcdaod/77814bdf-1582785178/makave@popeorigin6_encrypted_4407DD0.bin

https://cdn.filesend.jp/private/hcmyj5nD6aJkDXptSilmcc1iHGLaXs0QTpyQDASA5AqNsWXFkzdNappNJ0_8-TEx/makave%40popeorigin6_encrypted_4407DD0.bin
xor.base64

Signatures

  • Guloader,Cloudeye

    A shellcode based downloader first seen in 2020.

    downloaderguloader
  • Guloader Payload 2 IoCs
    guloader
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d8eb1f8dd36d03fb77bd957204cac06f71c45b8bde7f7ea1a10f45bb3b259487.exe
    "C:\Users\Admin\AppData\Local\Temp\d8eb1f8dd36d03fb77bd957204cac06f71c45b8bde7f7ea1a10f45bb3b259487.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:840
    • C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
      "C:\Users\Admin\AppData\Local\Temp\d8eb1f8dd36d03fb77bd957204cac06f71c45b8bde7f7ea1a10f45bb3b259487.exe"
      2⤵
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      PID:1664

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/840-57-0x0000000076491000-0x0000000076493000-memory.dmp
    Filesize

    8KB

    Download
  • memory/840-58-0x0000000000260000-0x000000000026D000-memory.dmp
    Filesize

    52KB

    Download
  • memory/840-59-0x0000000077BD0000-0x0000000077D79000-memory.dmp
    Filesize

    1.7MB

    Download
  • memory/840-60-0x0000000077DB0000-0x0000000077F30000-memory.dmp
    Filesize

    1.5MB

    Download
  • memory/1664-63-0x0000000000090000-0x0000000000190000-memory.dmp
    Filesize

    1024KB

    Download
  • memory/1664-64-0x0000000077BD0000-0x0000000077D79000-memory.dmp
    Filesize

    1.7MB

    Download
  • memory/1664-65-0x0000000077DB0000-0x0000000077F30000-memory.dmp
    Filesize

    1.5MB

    Download