Analysis

  • max time kernel
    150s
  • max time network
    140s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/09/2023, 23:49

General

  • Target

    a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645.exe

  • Size

    293KB

  • MD5

    b4ff9f65fa41e51f15be0163b5efe03d

  • SHA1

    b9d006e3e56be22e84e1702d7b2dd217fdf03e43

  • SHA256

    a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645

  • SHA512

    26426cae6f015c3038c18e62b8ebbe8a58d4bec108cd050511992e217ccebad5df0be60cede696c2a4fd123a9a919a2ead8f8be46a62b0afad5d3d295807c402

  • SSDEEP

    6144:HcEBSozxjfZnRluPDJe1tq3wAM9odg8Z:HcEAixrNRlcDEPCoL8

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645.exe
    "C:\Users\Admin\AppData\Local\Temp\a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4956
    • C:\Users\Admin\AppData\Local\Temp\a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645.exe
      "C:\Users\Admin\AppData\Local\Temp\a3d27d8b35f72399f5c74c2d80a726a3d8fb1c91d834e02e55cfd2e854cf4645.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1552

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1552-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1552-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/1552-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3120-5-0x0000000000DB0000-0x0000000000DC6000-memory.dmp

          Filesize

          88KB

        • memory/4956-2-0x0000000002470000-0x0000000002479000-memory.dmp

          Filesize

          36KB

        • memory/4956-1-0x0000000000720000-0x0000000000820000-memory.dmp

          Filesize

          1024KB