Analysis

  • max time kernel
    328s
  • max time network
    324s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    23/09/2023, 00:36

General

  • Target

    79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de.exe

  • Size

    191KB

  • MD5

    05a6b123f8ab7eaaeb40621f079bae87

  • SHA1

    2bebec5327c4411bb975b69cd92457f55111cfd1

  • SHA256

    79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de

  • SHA512

    5be23582b62c25614b6007941520bc751801594ba29617875159a7d588eb1e34e747ef4a5236edf9d5f8c5caa2e20d50a99bc0d50b6356a1673dff5ef0785fa5

  • SSDEEP

    3072:8+4M3I7trc0W0s/gUb0Jj+S5OdV4SxkxaUDIZwG5Vsy:R4M3I7h1W9AJj+SEkxcZ7sy

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2022

C2

http://gudintas.at/tmp/

http://pik96.ru/tmp/

http://rosatiauto.com/tmp/

http://kingpirate.ru/tmp/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 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 1 IoCs
  • Suspicious use of WriteProcessMemory 4 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\79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de.exe
    "C:\Users\Admin\AppData\Local\Temp\79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2808
  • C:\Windows\system32\taskeng.exe
    taskeng.exe {40F53409-8588-4DE2-BBC1-D791ED661A35} S-1-5-21-3750544865-3773649541-1858556521-1000:XOCYHKRS\Admin:Interactive:[1]
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2728
    • C:\Users\Admin\AppData\Roaming\bdftcgh
      C:\Users\Admin\AppData\Roaming\bdftcgh
      2⤵
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious behavior: MapViewOfSection
      PID:2528

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

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

          Filesize

          191KB

          MD5

          05a6b123f8ab7eaaeb40621f079bae87

          SHA1

          2bebec5327c4411bb975b69cd92457f55111cfd1

          SHA256

          79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de

          SHA512

          5be23582b62c25614b6007941520bc751801594ba29617875159a7d588eb1e34e747ef4a5236edf9d5f8c5caa2e20d50a99bc0d50b6356a1673dff5ef0785fa5

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

          Filesize

          191KB

          MD5

          05a6b123f8ab7eaaeb40621f079bae87

          SHA1

          2bebec5327c4411bb975b69cd92457f55111cfd1

          SHA256

          79a62aa738291f15636bfdd41733c557467f5cc848ab47e0265dc30c34ff73de

          SHA512

          5be23582b62c25614b6007941520bc751801594ba29617875159a7d588eb1e34e747ef4a5236edf9d5f8c5caa2e20d50a99bc0d50b6356a1673dff5ef0785fa5

        • memory/1208-5-0x0000000002E80000-0x0000000002E96000-memory.dmp

          Filesize

          88KB

        • memory/1208-16-0x0000000002DB0000-0x0000000002DC6000-memory.dmp

          Filesize

          88KB

        • memory/2528-15-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2528-17-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2808-3-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2808-4-0x0000000000220000-0x0000000000235000-memory.dmp

          Filesize

          84KB

        • memory/2808-6-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2808-0-0x0000000000220000-0x0000000000235000-memory.dmp

          Filesize

          84KB

        • memory/2808-9-0x0000000000240000-0x0000000000249000-memory.dmp

          Filesize

          36KB

        • memory/2808-2-0x0000000000400000-0x000000000043E000-memory.dmp

          Filesize

          248KB

        • memory/2808-1-0x0000000000240000-0x0000000000249000-memory.dmp

          Filesize

          36KB