Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29-12-2023 22:03

General

  • Target

    051b8fe31a4832078eb31d3b45228ddd.exe

  • Size

    178KB

  • MD5

    051b8fe31a4832078eb31d3b45228ddd

  • SHA1

    d3e4eee251493d835ce57d093c2542a902daea04

  • SHA256

    70b6e46b2d70a18bec9d70a986602c0d67fc0c4400290559e733c2f1c87fa64b

  • SHA512

    950c112584f24c3c28938d54a2436dfb86aea352b7f075190f99e70482dd8bcf3017e6ecdf3453dc1fcff90f3e2bffdea14e01d9af2274530633530ab3b46672

  • SSDEEP

    3072:5WdXlH1d/+brNwMKIGS1pQLLqzcyxzaRTVetumCvIWArywoOLi6:5AVduNDKIGuqLL4cy10VQSRwoOL

Malware Config

Extracted

Family

smokeloader

Botnet

0408

Extracted

Family

smokeloader

Version

2020

C2

http://readinglistforjuly1.xyz/

http://readinglistforjuly2.xyz/

http://readinglistforjuly3.xyz/

http://readinglistforjuly4.xyz/

http://readinglistforjuly5.xyz/

http://readinglistforjuly6.xyz/

http://readinglistforjuly7.xyz/

http://readinglistforjuly8.xyz/

http://readinglistforjuly9.xyz/

http://readinglistforjuly10.xyz/

http://readinglistforjuly1.site/

http://readinglistforjuly2.site/

http://readinglistforjuly3.site/

http://readinglistforjuly4.site/

http://readinglistforjuly5.site/

http://readinglistforjuly6.site/

http://readinglistforjuly7.site/

http://readinglistforjuly8.site/

http://readinglistforjuly9.site/

http://readinglistforjuly10.site/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • 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: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 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\051b8fe31a4832078eb31d3b45228ddd.exe
    "C:\Users\Admin\AppData\Local\Temp\051b8fe31a4832078eb31d3b45228ddd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3364
    • C:\Users\Admin\AppData\Local\Temp\051b8fe31a4832078eb31d3b45228ddd.exe
      "C:\Users\Admin\AppData\Local\Temp\051b8fe31a4832078eb31d3b45228ddd.exe"
      2⤵
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      PID:4260
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4260 -s 328
        3⤵
        • Program crash
        PID:4664
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4260 -ip 4260
    1⤵
      PID:1348

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3364-2-0x0000000002F10000-0x0000000002F1A000-memory.dmp

      Filesize

      40KB

    • memory/3364-1-0x0000000002F40000-0x0000000003040000-memory.dmp

      Filesize

      1024KB

    • memory/3388-5-0x0000000002B40000-0x0000000002B56000-memory.dmp

      Filesize

      88KB

    • memory/4260-4-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/4260-3-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB

    • memory/4260-8-0x0000000000400000-0x0000000000409000-memory.dmp

      Filesize

      36KB