Analysis

  • max time kernel
    152s
  • max time network
    131s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2023 05:32

General

  • Target

    8d34dc7baa81178fc9cfee8452f7c9c0.exe

  • Size

    246KB

  • MD5

    8d34dc7baa81178fc9cfee8452f7c9c0

  • SHA1

    3cf64588ffb2abeaae573393a7dd0aab15e2644c

  • SHA256

    c2184bcf42df553668824a2fe3e491847b330b58b62d2c8a61f3bbde59de7c61

  • SHA512

    19777e925700020a86c9becde4f4c80b1c02b1ac4cb091dcaaa6a81c4d65bd18500efb7b211b8e96ff95996f5f8aa4bdba72705de1439bea1d7362000ab2df9c

  • SSDEEP

    6144:Spz4SHy5uoBMFGV5PEkIXEHvZAO4mh0+Vs0BC+:RCmuoBMUOMx/Ps0BC+

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 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 21 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\8d34dc7baa81178fc9cfee8452f7c9c0.exe
    "C:\Users\Admin\AppData\Local\Temp\8d34dc7baa81178fc9cfee8452f7c9c0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1944
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
      2⤵
        PID:2784
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AppLaunch.exe"
        2⤵
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: MapViewOfSection
        PID:3048
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 1944 -s 84
        2⤵
        • Program crash
        PID:2620

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1204-5-0x0000000002A20000-0x0000000002A36000-memory.dmp

      Filesize

      88KB

    • memory/3048-0-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3048-2-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

      Filesize

      4KB

    • memory/3048-3-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3048-1-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3048-4-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/3048-6-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB