Analysis

  • max time kernel
    150s
  • max time network
    150s
  • 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, 20:07

General

  • Target

    734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af.exe

  • Size

    293KB

  • MD5

    486ecdc9522e173d5cdef07bf7c22622

  • SHA1

    efe7a2cf5a4271a3f76fd2cab5139ff8d7e9e5f2

  • SHA256

    734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af

  • SHA512

    f2c493fce94e5865315f05b6de3105adf489064ca8081a8bf5487c47d753840e9c90bf5539f2b1b80813f730d70acd3faba7785183482d289e002688572dc0a3

  • SSDEEP

    3072:QaCXPpzS2vD6rhxJpvwgLrFxQTRvM74OjjbIYhg85ve:xCPZS4cxJpvwO/4GjbISg8F

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.

  • Executes dropped EXE 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 6 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 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\734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af.exe
    "C:\Users\Admin\AppData\Local\Temp\734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2244
    • C:\Users\Admin\AppData\Local\Temp\734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af.exe
      "C:\Users\Admin\AppData\Local\Temp\734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:3044
  • C:\Users\Admin\AppData\Roaming\cadeaut
    C:\Users\Admin\AppData\Roaming\cadeaut
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1400
    • C:\Users\Admin\AppData\Roaming\cadeaut
      C:\Users\Admin\AppData\Roaming\cadeaut
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2592

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        • C:\Users\Admin\AppData\Roaming\cadeaut

          Filesize

          293KB

          MD5

          486ecdc9522e173d5cdef07bf7c22622

          SHA1

          efe7a2cf5a4271a3f76fd2cab5139ff8d7e9e5f2

          SHA256

          734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af

          SHA512

          f2c493fce94e5865315f05b6de3105adf489064ca8081a8bf5487c47d753840e9c90bf5539f2b1b80813f730d70acd3faba7785183482d289e002688572dc0a3

        • C:\Users\Admin\AppData\Roaming\cadeaut

          Filesize

          293KB

          MD5

          486ecdc9522e173d5cdef07bf7c22622

          SHA1

          efe7a2cf5a4271a3f76fd2cab5139ff8d7e9e5f2

          SHA256

          734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af

          SHA512

          f2c493fce94e5865315f05b6de3105adf489064ca8081a8bf5487c47d753840e9c90bf5539f2b1b80813f730d70acd3faba7785183482d289e002688572dc0a3

        • C:\Users\Admin\AppData\Roaming\cadeaut

          Filesize

          293KB

          MD5

          486ecdc9522e173d5cdef07bf7c22622

          SHA1

          efe7a2cf5a4271a3f76fd2cab5139ff8d7e9e5f2

          SHA256

          734c300338f40643967931a824822684721d02b80912b7066814a7802eff06af

          SHA512

          f2c493fce94e5865315f05b6de3105adf489064ca8081a8bf5487c47d753840e9c90bf5539f2b1b80813f730d70acd3faba7785183482d289e002688572dc0a3

        • memory/1400-16-0x0000000000730000-0x0000000000830000-memory.dmp

          Filesize

          1024KB

        • memory/2244-2-0x0000000002460000-0x0000000002469000-memory.dmp

          Filesize

          36KB

        • memory/2244-1-0x0000000000930000-0x0000000000A30000-memory.dmp

          Filesize

          1024KB

        • memory/2592-19-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2592-21-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/2608-5-0x00000000031D0000-0x00000000031E6000-memory.dmp

          Filesize

          88KB

        • memory/2608-20-0x0000000003210000-0x0000000003226000-memory.dmp

          Filesize

          88KB

        • memory/3044-4-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3044-6-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/3044-3-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB