Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/07/2023, 18:16

General

  • Target

    d8b2bb861557541b4848532a6a9cd005.exe

  • Size

    259KB

  • MD5

    d8b2bb861557541b4848532a6a9cd005

  • SHA1

    f051c0e60a501dbf71c9900844595cc343905f7b

  • SHA256

    ed5bb7322e02c65a989222913dcdd418509cd35578009fd5e578d1990cac527d

  • SHA512

    217124d3ffb0dc5f80e0a45adb649343156bc834f0ddf2078b2fcb95c341179ba48756a0962e171cc0a08be8037aa35ba120c8ba1f134271fa96993146f71019

  • SSDEEP

    3072:F3UUqemKFDevdHt9xuzmscua2OfuhufKzY3HuX/C5EBn:VaK6v1Lszmaa2OWUfmYXuX/C5EB

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.

  • Drops file in System32 directory 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.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of UnmapMainImage 1 IoCs
  • Suspicious use of WriteProcessMemory 6 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:\Windows\System32\svchost.exe
    C:\Windows\System32\svchost.exe -k netsvcs -p
    1⤵
    • Drops file in System32 directory
    • Checks processor information in registry
    • Enumerates system info in registry
    PID:724
  • C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe
    "C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4768
    • C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe
      "C:\Users\Admin\AppData\Local\Temp\d8b2bb861557541b4848532a6a9cd005.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4668

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3180-188-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-190-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-145-0x0000000001EC0000-0x0000000001ED6000-memory.dmp

          Filesize

          88KB

        • memory/3180-155-0x0000000002420000-0x0000000002430000-memory.dmp

          Filesize

          64KB

        • memory/3180-156-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-157-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-158-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-159-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-160-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-162-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-161-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-163-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-164-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-165-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-166-0x0000000002470000-0x0000000002480000-memory.dmp

          Filesize

          64KB

        • memory/3180-167-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-168-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-169-0x0000000002470000-0x0000000002480000-memory.dmp

          Filesize

          64KB

        • memory/3180-170-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-172-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-174-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-176-0x0000000002420000-0x0000000002430000-memory.dmp

          Filesize

          64KB

        • memory/3180-175-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-179-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-178-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-180-0x0000000002470000-0x0000000002480000-memory.dmp

          Filesize

          64KB

        • memory/3180-181-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-183-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-184-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-185-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-187-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-182-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-154-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-153-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-195-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-191-0x0000000001E90000-0x0000000001EA0000-memory.dmp

          Filesize

          64KB

        • memory/3180-192-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-193-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-194-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-198-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-196-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-189-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-201-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-200-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-202-0x0000000002400000-0x0000000002410000-memory.dmp

          Filesize

          64KB

        • memory/3180-203-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-204-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-205-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-207-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-211-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-209-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-213-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-214-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-215-0x0000000002400000-0x0000000002410000-memory.dmp

          Filesize

          64KB

        • memory/3180-218-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-217-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-220-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-219-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-222-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-216-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/3180-223-0x0000000002410000-0x0000000002420000-memory.dmp

          Filesize

          64KB

        • memory/4668-136-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4668-137-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4668-146-0x0000000000400000-0x0000000000409000-memory.dmp

          Filesize

          36KB

        • memory/4768-134-0x0000000002630000-0x0000000002730000-memory.dmp

          Filesize

          1024KB

        • memory/4768-135-0x0000000002610000-0x0000000002619000-memory.dmp

          Filesize

          36KB