Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230915-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230915-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/09/2023, 15:48

General

  • Target

    3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe

  • Size

    211KB

  • MD5

    558064602651bb656d5b4d51d8499739

  • SHA1

    f26eb27c4c7057e43e246faf0d66c63badfafef8

  • SHA256

    3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa

  • SHA512

    0578a27a2a5ca8a0d1ff30b6490b010c2b019ec872de7bd0efb6ec4688482dafee95bbbfcda4bdf4d8b7a1b0cbecdf7bb4cd6545fa9544de186b328da0ccd402

  • SSDEEP

    3072:PXJAEziPS8H3TTd2C3xk4PQbKcocHxpIVI51KOfUhz:/yEe6gDT8OfPrBcMVYKC

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.

  • 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.

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 2 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:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
    "C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4948
    • C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe
      "C:\Users\Admin\AppData\Local\Temp\3e426457b7d750e038d399c99afa1ea8a75c21ec18e376702af0b25951f9a2fa.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:936
  • C:\Windows\system32\rundll32.exe
    "C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
    1⤵
      PID:4064
    • C:\Windows\System32\svchost.exe
      C:\Windows\System32\svchost.exe -k UnistackSvcGroup
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4020

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          • memory/936-3-0x0000000000400000-0x0000000000409000-memory.dmp

            Filesize

            36KB

          • memory/936-6-0x0000000000400000-0x0000000000409000-memory.dmp

            Filesize

            36KB

          • memory/936-2-0x0000000000400000-0x0000000000409000-memory.dmp

            Filesize

            36KB

          • memory/2568-5-0x0000000000860000-0x0000000000876000-memory.dmp

            Filesize

            88KB

          • memory/4020-13-0x0000021212590000-0x00000212125A0000-memory.dmp

            Filesize

            64KB

          • memory/4020-29-0x0000021212690000-0x00000212126A0000-memory.dmp

            Filesize

            64KB

          • memory/4020-45-0x000002121AA00000-0x000002121AA01000-memory.dmp

            Filesize

            4KB

          • memory/4020-47-0x000002121AA30000-0x000002121AA31000-memory.dmp

            Filesize

            4KB

          • memory/4020-48-0x000002121AA30000-0x000002121AA31000-memory.dmp

            Filesize

            4KB

          • memory/4020-49-0x000002121AB40000-0x000002121AB41000-memory.dmp

            Filesize

            4KB

          • memory/4948-4-0x00000000005F0000-0x0000000000605000-memory.dmp

            Filesize

            84KB

          • memory/4948-1-0x0000000000610000-0x0000000000619000-memory.dmp

            Filesize

            36KB

          • memory/4948-0-0x00000000005F0000-0x0000000000605000-memory.dmp

            Filesize

            84KB