Analysis

  • max time kernel
    4294211s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    01/03/2022, 01:41

General

  • Target
    58f363c9fe5244aa2a953a196bd7146b.exe
  • Size 326KB
  • Sample220301-b34v2ahbbl
  • SHA256 b7f72b580d2ae1f4d8f3bc243ce63a28cb41363077992214c7b63f71adfb3d91
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://host-data-coin-11.com/

  • http://file-coin-host-12.com/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • 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 FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\58f363c9fe5244aa2a953a196bd7146b.exe
    "C:\Users\Admin\AppData\Local\Temp\58f363c9fe5244aa2a953a196bd7146b.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1160
    • C:\Users\Admin\AppData\Local\Temp\58f363c9fe5244aa2a953a196bd7146b.exe
      "C:\Users\Admin\AppData\Local\Temp\58f363c9fe5244aa2a953a196bd7146b.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:1776

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        memory/1160-54-0x0000000002F9B000-0x0000000002FAC000-memory.dmp

        memory/1160-58-0x00000000003C0000-0x00000000003C9000-memory.dmp

        memory/1160-56-0x0000000002F9B000-0x0000000002FAC000-memory.dmp

        memory/1404-61-0x0000000002630000-0x0000000002646000-memory.dmp

        memory/1776-55-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/1776-57-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

        memory/1776-59-0x0000000000400000-0x0000000000409000-memory.dmp

        memory/1776-60-0x0000000000400000-0x0000000000409000-memory.dmp