Overview

overview

10

Static

static

5

sub_a57faf788847.exe

windows10-2004-x64

10

sub_a57faf788847.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    152s
  • 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_a57faf788847.exe
  • Size 1.3MB
  • Sample260524-cd65jaez5r
  • SHA256 a57faf788847e0b6b7920b37a1dd4c93041273bfeae6492ddf60e0f4d864ae3c
  • 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 9 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 15 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 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.exe
    "C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.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:3384
    • C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.exe
      "C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4192
      • C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.exe
        "C:\Users\Admin\AppData\Local\Temp\sub_a57faf788847.exe"
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        PID:4452
  • 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:2236
    • 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:3592
      • C:\Windows\mssrv.exe
        "C:\Windows\mssrv.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        PID:3968
    • C:\Windows\mssrv.exe
      "C:\Windows\mssrv.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:3904

Network

        MITRE ATT&CK Enterprise v16

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        Downloads

        malaysia gang bang nude licking titts pregnant (Ashley).mpg.exe
        • Path C:\Program Files\Microsoft Office\root\vfs\ProgramFilesCommonX64\Microsoft Shared\malaysia gang bang nude licking titts pregnant (Ashley).mpg.exe
        • Size 703KB
        • SHA256 3428e27a0c43a8780d543e70c7c792aae93955f3369b8ac9075605ecc0d6ad71
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        mssrv.exe
        • Path C:\Windows\mssrv.exe
        • Size 1.9MB
        • SHA256 897931dcd0469d5f2daae6a7e1280fa09fefae4e5ab0f5544e238a71774ce185
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2236-234-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/2236-11-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3384-231-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3384-0-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3592-116-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3592-259-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3904-264-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3968-213-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/3968-267-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/4192-27-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/4192-257-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/4452-208-0x0000000000400000-0x0000000000456000-memory.dmp
        Download

        memory/4452-262-0x0000000000400000-0x0000000000456000-memory.dmp
        Download