Analysis

  • max time kernel
    151s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    08/03/2022, 22:15

General

  • Target
    l0ad.exe
  • Size 2.1MB
  • Sample220308-158pfaechk
  • SHA256 dfd82ea53bb1196fc2e079063358063b524142778c754259045e4541c60d7c1d
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • smokeloader

Version
  • 2020

C2
  • http://2.56.59.26/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 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 19 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\l0ad.exe
    "C:\Users\Admin\AppData\Local\Temp\l0ad.exe"
    1⤵
    • Checks BIOS information in registry
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:3864
  • C:\Windows\SysWOW64\explorer.exe
    C:\Windows\SysWOW64\explorer.exe
    1⤵
      PID:1800
    • C:\Windows\explorer.exe
      C:\Windows\explorer.exe
      1⤵
        PID:640
      • C:\Windows\SysWOW64\explorer.exe
        C:\Windows\SysWOW64\explorer.exe
        1⤵
          PID:1868
        • C:\Windows\explorer.exe
          C:\Windows\explorer.exe
          1⤵
            PID:2144
          • C:\Windows\SysWOW64\explorer.exe
            C:\Windows\SysWOW64\explorer.exe
            1⤵
              PID:2312
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              1⤵
                PID:2580
              • C:\Windows\SysWOW64\explorer.exe
                C:\Windows\SysWOW64\explorer.exe
                1⤵
                  PID:1712
                • C:\Windows\explorer.exe
                  C:\Windows\explorer.exe
                  1⤵
                    PID:2208
                  • C:\Windows\SysWOW64\explorer.exe
                    C:\Windows\SysWOW64\explorer.exe
                    1⤵
                      PID:2976

                    Network

                          MITRE ATT&CK Enterprise v6

                          Replay Monitor

                          Loading Replay Monitor...

                          Downloads

                          memory/640-144-0x00000000004F0000-0x00000000004F9000-memory.dmp

                          memory/640-145-0x00000000004E0000-0x00000000004EF000-memory.dmp

                          memory/1712-156-0x00000000008C0000-0x00000000008CB000-memory.dmp

                          memory/1712-155-0x00000000008D0000-0x00000000008D6000-memory.dmp

                          memory/1800-146-0x00000000008D0000-0x00000000008DB000-memory.dmp

                          memory/1800-143-0x00000000008E0000-0x00000000008E7000-memory.dmp

                          memory/1868-148-0x0000000003300000-0x0000000003309000-memory.dmp

                          memory/1868-147-0x0000000003310000-0x0000000003315000-memory.dmp

                          memory/2144-150-0x0000000000410000-0x000000000041C000-memory.dmp

                          memory/2144-149-0x0000000000420000-0x0000000000426000-memory.dmp

                          memory/2208-158-0x00000000005F0000-0x00000000005FD000-memory.dmp

                          memory/2208-157-0x0000000000800000-0x0000000000807000-memory.dmp

                          memory/2312-151-0x0000000000A50000-0x0000000000A72000-memory.dmp

                          memory/2312-152-0x0000000000A20000-0x0000000000A47000-memory.dmp

                          memory/2436-142-0x00000000006C0000-0x00000000006D6000-memory.dmp

                          memory/2580-154-0x00000000006C0000-0x00000000006C9000-memory.dmp

                          memory/2580-153-0x00000000006D0000-0x00000000006D5000-memory.dmp

                          memory/2976-160-0x00000000032C0000-0x00000000032CB000-memory.dmp

                          memory/2976-159-0x00000000032D0000-0x00000000032D8000-memory.dmp

                          memory/3864-130-0x00000000025F0000-0x0000000002630000-memory.dmp

                          memory/3864-135-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-136-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-137-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-138-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-139-0x0000000002630000-0x0000000002631000-memory.dmp

                          memory/3864-134-0x0000000000AD0000-0x0000000000AD1000-memory.dmp

                          memory/3864-133-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-132-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-131-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-141-0x0000000000400000-0x0000000000935000-memory.dmp

                          memory/3864-140-0x0000000077190000-0x0000000077333000-memory.dmp