Overview

overview

10

Static

static

5

sub_1855b9d1c6bf.exe

windows10-2004-x64

10

sub_1855b9d1c6bf.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    148s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    24/05/2026, 01:58

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General

  • Target
    sub_1855b9d1c6bf.exe
  • Size 984KB
  • Sample260524-cd578sat8t
  • SHA256 1855b9d1c6bfd41d4e6bc8090ffaeca62836425bf673d5b1417410b9a005212e
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
discoverysfonepersistencespywarestealerupxworm

Malware Config

Signatures

  • Family: Sfone

    Sfone is a worm written in C++.

    wormsfone
  • Detects Sfone worm 22 IoCs
  • Executes dropped EXE 4 IoCs
  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 13 IoCs
  • UPX packed file 26 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Drops file in Program Files directory 15 IoCs
  • Drops file in Windows directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe
    "C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe"
    1⤵
    • Adds Run key to start application
    • Enumerates connected drives
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:2632
    • C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe
      "C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3752
      • C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe
        "C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:5924
    • C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe
      "C:\Users\Admin\AppData\Local\Temp\sub_1855b9d1c6bf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:4536
  • C:\Windows\mssrv.exe
    C:\Windows\mssrv.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5012
    • C:\Windows\mssrv.exe
      "C:\Windows\mssrv.exe"
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2696
      • C:\Windows\mssrv.exe
        "C:\Windows\mssrv.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:3500
    • C:\Windows\mssrv.exe
      "C:\Windows\mssrv.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:2972

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        black animal blowjob [bangbus] feet ejaculation (Jade).mpeg.exe
        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX86\Microsoft Shared\black animal blowjob [bangbus] feet ejaculation (Jade).mpeg.exe
        • Size 1.3MB
        • SHA256 efd9d559af2e2e3aa1e91434bc5635b1494f4435fce94ce414d8910b3f992283
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mssrv.exe
        • Path C:\Windows\mssrv.exe
        • Size 761KB
        • SHA256 c56ca90820ee363bc71bed9c3594c2fd1e13270cab0ed4ef0a57cdcd6ab08048
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2632-0-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-220-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-353-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-183-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-345-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-337-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-297-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-361-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-329-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-321-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-305-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-313-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-253-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-266-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2632-288-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2696-221-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2972-249-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/2972-179-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/3500-252-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/3752-219-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/4536-224-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/5012-210-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/5012-12-0x0000000000400000-0x000000000041E000-memory.dmp
        Download

        memory/5924-229-0x0000000000400000-0x000000000041E000-memory.dmp
        Download