Analysis

  • max time kernel
    300s
  • max time network
    272s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/09/2023, 04:42

General

  • Target

    toolspub1.exe

  • Size

    293KB

  • MD5

    682773905fd75641ab9bb5d68500d987

  • SHA1

    aefe2a8a408c0f316d1783c1cbe8522cd4095f3c

  • SHA256

    e0aa93c3f01841d67f1d1f4caa49705313e441aa6c74ad027c890a2174681154

  • SHA512

    d42bfbb998f984d30de034d380ea584e25c85316c2e315e5653db74058ffa6a24fde86bdafce02c740a1851e16d055bfb034b5fd9258b552cbea1758532fe3d2

  • SSDEEP

    3072:w68XTpDS5GjDBixbk4pB0EG/JbD1wm2vZ9IULFum+/mh1nkrNidg87dB:R4TpSQsxdpB07xD152rIiOY1nkkg8Z

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 AdjustPrivilegeToken 2 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\toolspub1.exe
    "C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1216
    • C:\Users\Admin\AppData\Local\Temp\toolspub1.exe
      "C:\Users\Admin\AppData\Local\Temp\toolspub1.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:2784

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1216-1-0x0000000000AA0000-0x0000000000BA0000-memory.dmp

          Filesize

          1024KB

        • memory/1216-2-0x00000000008B0000-0x00000000008B9000-memory.dmp

          Filesize

          36KB

        • memory/2784-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2784-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2784-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3228-5-0x0000000000950000-0x0000000000966000-memory.dmp

          Filesize

          88KB