Analysis

  • max time kernel
    150s
  • max time network
    122s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08-03-2024 02:44

General

  • Target

    b8432c329b52cfc606472a60d5eee14d.exe

  • Size

    250KB

  • MD5

    b8432c329b52cfc606472a60d5eee14d

  • SHA1

    8ee0b3e4ef44238d4bc629042e8e9bfed0097521

  • SHA256

    1297a29f6a9bd96447d98205a1d8f05af3d64af5e6323a96189e22f41f629ea3

  • SHA512

    dba175a794443dce3df8a6e252fe1fd9915eb4546a500ae4b54e225290f873784fb93da9d33a24c0bea93d87656daee14abcf448cdd05e61af32678347f254a6

  • SSDEEP

    3072:djlF/cwiUjDtCRqta/L1jEfFNS5YhQTamBHj8dZPOwNVXjzoZ8V:BvPRt+LKXS53TavZrNVfs8V

Malware Config

Extracted

Family

smokeloader

Botnet

pub1

Extracted

Family

smokeloader

Version

2020

C2

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Signatures

  • SmokeLoader

    Modular backdoor trojan in use since 2014.

  • Deletes itself 1 IoCs
  • Loads dropped DLL 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
  • 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\b8432c329b52cfc606472a60d5eee14d.exe
    "C:\Users\Admin\AppData\Local\Temp\b8432c329b52cfc606472a60d5eee14d.exe"
    1⤵
    • Loads dropped DLL
    • Checks SCSI registry key(s)
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    PID:2760
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2760 -s 392
      2⤵
      • Program crash
      PID:4716
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2760 -ip 2760
    1⤵
      PID:4920

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\CC4F.tmp

      Filesize

      1.6MB

      MD5

      4f3387277ccbd6d1f21ac5c07fe4ca68

      SHA1

      e16506f662dc92023bf82def1d621497c8ab5890

      SHA256

      767a3fc4a7a6818cdc3f0b99aaa95db694f6bcde719d2057a88b3d4df3d74fac

      SHA512

      9da199ac69e3c0d4e0c6307e0ab8178f12cc25cb2f14c3511f6b64e6e60a925c860f3263cb38353a97b55a71ef4d27f8cb7fa3cfc08e7c1a349fd8d209dfa219

    • memory/2760-1-0x00000000017B0000-0x00000000018B0000-memory.dmp

      Filesize

      1024KB

    • memory/2760-2-0x00000000015B0000-0x00000000015B9000-memory.dmp

      Filesize

      36KB

    • memory/2760-7-0x0000000000400000-0x0000000001410000-memory.dmp

      Filesize

      16.1MB

    • memory/2760-11-0x0000000000400000-0x0000000001410000-memory.dmp

      Filesize

      16.1MB

    • memory/3364-8-0x0000000002B70000-0x0000000002B85000-memory.dmp

      Filesize

      84KB