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Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/01/2024, 00:14

General

  • Target

    78c5296c2971f02b37a8d139468e2c36.exe

  • Size

    273KB

  • MD5

    78c5296c2971f02b37a8d139468e2c36

  • SHA1

    31359a445cb0d55e6e36bbb707a3065a03c2bdca

  • SHA256

    344439e9881f9a1b89b1e32f9e810a52e8ce020e7e10ae165c57c60656df348c

  • SHA512

    28c7f29654bcfbbb4da6bd9bd211ec1b6369d52f49ffc401fb2ae51ba7770ce7c7cfb165f3ffc11662874483b0186ed61223994c2081fd473b824c9735184e8d

  • SSDEEP

    6144:ZhRyJEiLYFCuRHpUS2oKtrQBFMgwgIt7MhIn+KmR:wJZQCYHpaHtrQBxwPimdmR

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://varmisende.com/upload/

http://fernandomayol.com/upload/

http://nextlytm.com/upload/

http://people4jan.com/upload/

http://asfaltwerk.com/upload/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 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
  • 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\78c5296c2971f02b37a8d139468e2c36.exe
    "C:\Users\Admin\AppData\Local\Temp\78c5296c2971f02b37a8d139468e2c36.exe"
    1⤵
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:4376
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4376 -s 372
      2⤵
      • Program crash
      PID:2252
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4376 -ip 4376
    1⤵
      PID:3020

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/3428-4-0x0000000002C20000-0x0000000002C35000-memory.dmp

      Filesize

      84KB

    • memory/4376-1-0x00000000024E0000-0x00000000025E0000-memory.dmp

      Filesize

      1024KB

    • memory/4376-2-0x0000000000400000-0x00000000023AE000-memory.dmp

      Filesize

      31.7MB

    • memory/4376-3-0x0000000002480000-0x0000000002489000-memory.dmp

      Filesize

      36KB

    • memory/4376-7-0x0000000000400000-0x00000000023AE000-memory.dmp

      Filesize

      31.7MB