Overview

overview

8

Static

static

3

c33bf3781f...20.exe

windows10-2004-x64

8

c33bf3781f...20.exe

windows11-21h2-x64

8

Analysis

  • max time kernel
    150s
  • max time network
    157s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/06/2026, 05:10

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General

  • Target
    c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe
  • Size 577KB
  • Sample260601-ft4acscx7s
  • SHA256 c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
discoveryspywarestealer

Malware Config

Signatures

  • Drops file in Drivers directory 2 IoCs
  • Drops startup file 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

    spywarestealer
  • Enumerates connected drives 3 TTPs 21 IoCs

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

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

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

    discovery
  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe
    "C:\Users\Admin\AppData\Local\Temp\c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe"
    1⤵
    • Drops file in Drivers directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:5604
    • C:\Windows\SysWOW64\net.exe
      net stop "Kingsoft AntiVirus Service"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4364
      • C:\Windows\SysWOW64\net1.exe
        C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:2320
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$a3FB4.bat
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5296
      • C:\Users\Admin\AppData\Local\Temp\c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe
        "C:\Users\Admin\AppData\Local\Temp\c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe"
        3⤵
        • Executes dropped EXE
        PID:4404
    • C:\Windows\Logo1_.exe
      C:\Windows\Logo1_.exe
      2⤵
      • Drops file in Drivers directory
      • Drops startup file
      • Executes dropped EXE
      • Enumerates connected drives
      • 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:5536
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5088
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3400
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5096
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          4⤵
          • System Location Discovery: System Language Discovery
          PID:5460

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        MicrosoftEdgeUpdateBroker.exe
        • Path C:\Program Files (x86)\Microsoft\EdgeUpdate_bk\1.3.143.57\MicrosoftEdgeUpdateBroker.exe
        • Size 132KB
        • SHA256 ea6bb931546105ed8c428d791a47bda101a203ea9fcdd3cfe5d8f1bc4bdba0c7
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        7z.exe
        • Path C:\Program Files\7-Zip\7z.exe
        • Size 582KB
        • SHA256 8ab6f38c4d96f02d3cf9472d3f078588adb99ce758fcf9e00e62dde792e27101
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        vcredist_x86.exe
        • Path C:\ProgramData\Package Cache\{61087a79-ac85-455c-934d-1fa22cc64f36}\vcredist_x86.exe
        • Size 488KB
        • SHA256 ed38ff04194cfca9b532dc0440268da47b3cce5c72a379d371f21c8225a7e666
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        $$a3FB4.bat
        • Path C:\Users\Admin\AppData\Local\Temp\$$a3FB4.bat
        • Size 722B
        • SHA256 382bdc0b4b67c8ab7374bbb78b3f8436c928815de2f90527f035cb58ad6e20f3
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe.exe
        • Path C:\Users\Admin\AppData\Local\Temp\c33bf3781fe6d2865342e2130c578e9241385543a9fa65b7de4509bf95fa3b20.exe.exe
        • Size 544KB
        • SHA256 8cebb25e240db3b6986fcaed6bc0b900fa09dad763a56fb71273529266c5c525
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        Logo1_.exe
        • Path C:\Windows\Logo1_.exe
        • Size 33KB
        • SHA256 ced866b13989f31dc46b1433789baeed67345ba097a87c4801f49709105c428d
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        hosts
        • Path C:\Windows\system32\drivers\etc\hosts
        • Size 842B
        • SHA256 d9704dab05e988be3e5e7b7c020bb9814906d11bb9c31ad80d4ed1316f6bc94e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        _desktop.ini
        • Path F:\$RECYCLE.BIN\S-1-5-21-1768642833-2142038154-4041560723-1000\_desktop.ini
        • Size 8B
        • SHA256 f29189eb11965eb3f457dcfc9961541cf5820960ece28657e097c84d9236f547
        • MD5 SHA1 SHA512
        Submit Download

        memory/5536-19-0x0000000000400000-0x000000000043E000-memory.dmp
        Download

        memory/5536-2471-0x0000000000400000-0x000000000043E000-memory.dmp
        Download

        memory/5536-9-0x0000000000400000-0x000000000043E000-memory.dmp
        Download

        memory/5536-10200-0x0000000000400000-0x000000000043E000-memory.dmp
        Download

        memory/5604-10-0x0000000000400000-0x000000000043E000-memory.dmp
        Download

        memory/5604-0-0x0000000000400000-0x000000000043E000-memory.dmp
        Download