Analysis

  • max time kernel
    150s
  • max time network
    147s
  • 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, 20:50

General

  • Target

    4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f.exe

  • Size

    293KB

  • MD5

    85b05ade1159c68efbb6ed097f6d5586

  • SHA1

    6ae0639f645e0beff5aeeae7307bc46ce828baf9

  • SHA256

    4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f

  • SHA512

    bb8077c6c2cba776f64eafe493887f9d7d542d36b011b23ef71767208f02f3cd469c95b83fe4944211acf26d4cefb2e2a5a921ef626980fbca23556d22299828

  • SSDEEP

    3072:u6DXupzS2vDXrBxDIDuSOyZXoaGj3Qc/RA+uUfdOU5g85ve:X7uZS4dxwuXyZXmXS+u6dOmg8F

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\4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f.exe
    "C:\Users\Admin\AppData\Local\Temp\4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1484
    • C:\Users\Admin\AppData\Local\Temp\4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f.exe
      "C:\Users\Admin\AppData\Local\Temp\4b58638cdfb9a5264397c697d55ffc2e042bff4661a1963a0a93ee27f6c2ee3f.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4356

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/1484-1-0x00000000008E0000-0x00000000009E0000-memory.dmp

          Filesize

          1024KB

        • memory/1484-2-0x00000000008C0000-0x00000000008C9000-memory.dmp

          Filesize

          36KB

        • memory/3188-5-0x0000000002AF0000-0x0000000002B06000-memory.dmp

          Filesize

          88KB

        • memory/4356-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4356-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4356-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB