Analysis

  • max time kernel
    150s
  • max time network
    125s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    14/10/2026, 08:17

General

  • Target
    cersetup.exe
  • Size 5.3MB
  • Sample261014-j64cnsfc45
  • SHA256 dbecebdb0da581e0329dd22d9380cb122fd0d7536dbecdbd8a75060a03a36cda
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
4/10

Malware Config

Signatures

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Executes dropped EXE 7 IoCs
  • Loads dropped DLL 5 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

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

  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cersetup.exe
    "C:\Users\Admin\AppData\Local\Temp\cersetup.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4876
    • C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\cersetup.exe
      C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\cersetup.exe -waitingforchildprocess -media_path:"C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\" -tempdisk1folder:"C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\" -IS_OriginalLauncher:"C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\cersetup.exe" -no_selfdeleter -IS_temp -package:"C:\Users\Admin\AppData\Local\Temp\cersetup.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3856
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{DEC6886D-85DD-487B-8D03-02D316E8BBB5}
        3⤵
        • Executes dropped EXE
        PID:4816
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{18527568-5732-4BC8-B440-C924C595DFDA}
        3⤵
        • Executes dropped EXE
        PID:2840
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{83C6CAF0-F69F-49BB-B74D-C8447534E34C}
        3⤵
        • Executes dropped EXE
        PID:908
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{50EED01A-A42C-433F-93B6-73E84A90ED3E}
        3⤵
        • Executes dropped EXE
        PID:4492
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{6B485E8A-16F6-4971-BD77-EA48E5241C17}
        3⤵
        • Executes dropped EXE
        PID:1204
      • C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe {EFB7539B-24F3-46B6-AF6E-3B021B51EFEF}:{B5C1621E-4AC3-49A0-80F0-582C92F10ECE}
        3⤵
        • Executes dropped EXE
        PID:3884

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        0x0411.ini

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\0x0411.ini
        • Size 14KB
        • SHA256 3f0778538202a35483c084fb0b109f693a9853f64d6452daa5c92ac75620aadc
        • MD5 SHA1 SHA512 SSDEEP TLSH

        ISSetup.dll

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\ISSetup.dll
        • Size 1.5MB
        • SHA256 9eb8944559211c1738bb1b4016d49438b433e2c74c277fd94d08ffe820fa0cee
        • MD5 SHA1 SHA512 SSDEEP TLSH

        cersetup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\cersetup.exe
        • Size 987KB
        • SHA256 340ca335ef70068ddb94cd4355778ce87356e56c1d07d3e5581e686414cbbf8f
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data1.cab

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\data1.cab
        • Size 1.4MB
        • SHA256 42f4f18a401410e63d8a02e40e5cdc554b1e2a45ac4047f78b1af8c675de6871
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data1.hdr

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\data1.hdr
        • Size 13KB
        • SHA256 aed2e9890c95ff8ec1646e550a2cf7ed7873ccb17975dacb30532169f7d00a77
        • MD5 SHA1 SHA512 SSDEEP TLSH

        data2.cab

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\data2.cab
        • Size 147KB
        • SHA256 6b58d0a94537ae019ff13d121c3250764732b2983021fa84e52b0e3ace3db0ff
        • MD5 SHA1 SHA512 SSDEEP TLSH

        layout.bin

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\layout.bin
        • Size 550B
        • SHA256 815c499106eaf44b983dee385eeff54df76616a5d11b25554bc6bb4f185acb8d
        • MD5 SHA1 SHA512 TLSH

        setup.inx

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\Disk1\setup.inx
        • Size 239KB
        • SHA256 9408b04e11cb57e1ed1c2bc2e9d90368362654d8f8df6b9003507f1907998df9
        • MD5 SHA1 SHA512 SSDEEP TLSH

        setup.ini

        • Path C:\Users\Admin\AppData\Local\Temp\{62E1FCA9-3AD8-43A9-AFA5-E5019E3948A7}\setup.ini
        • Size 2KB
        • SHA256 7f327120bc14931a67ef4e9cf2ca9e2db15be25d9bbede53712a2c247d896f7f
        • MD5 SHA1 SHA512 TLSH

        ISBEW.exe

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\ISBEW.exe
        • Size 229KB
        • SHA256 af8d8addfa8d753dd5ad8ec6ddefc30d32bdd68c3c6169e79661b2e084b0083e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        corecomp.ini

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\corecomp.ini
        • Size 63KB
        • SHA256 f6d7bc8ca6550662166f34407968c7d3669613e50e98a4e40bec1589e74ff5d1
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dotnetinstaller.exe

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\dotnetinstaller.exe
        • Size 27KB
        • SHA256 7fa33f3686a8653cab42e1a8c6c787fe746b81e989f51a8bf996c937627ea68e
        • MD5 SHA1 SHA512 SSDEEP TLSH

        dotnetinstaller.exe.config

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\dotnetinstaller.exe.config
        • Size 178B
        • SHA256 08faf30e9cbab4138deefacc90c1d225b41aa76fbdc7a100e75919e13f772f5d
        • MD5 SHA1 SHA512 TLSH

        DIFxData.ini

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\DIFxData.ini
        • Size 84B
        • SHA256 6bc8b890884278599e4c0ca4095cefdf0f5394c5796012d169cc0933e03267a1
        • MD5 SHA1 SHA512 TLSH

        FontData.ini

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\FontData.ini
        • Size 37B
        • SHA256 a7e91b042ce33490353c00244c0420c383a837e73e6006837a60d3c174102932
        • MD5 SHA1 SHA512

        StringTable_0x0411.ips

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\StringTable_0x0411.ips
        • Size 5KB
        • SHA256 20b3d35ac44744b5e0e3cbc5662887aff7faaae8ed356dd4ffe8fba53e0bf6cf
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _isres_0x0411.dll

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\_isres_0x0411.dll
        • Size 1.6MB
        • SHA256 2f173d978b83d81814962ecd547c210b0773886cc9473b3049c1b0667aab57db
        • MD5 SHA1 SHA512 SSDEEP TLSH

        _isuser_0x0411.dll

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\_isuser_0x0411.dll
        • Size 2KB
        • SHA256 e33213f61d74e458ea04609955ff4e8e2739c79eb101b8f54dd8bcccb8f2e7d8
        • MD5 SHA1 SHA512 TLSH

        default.pal

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\default.pal
        • Size 1KB
        • SHA256 8075162db275eb52f5d691b15fc0d970cb007f5bece33ce5db509edf51c1f020
        • MD5 SHA1 SHA512 TLSH

        isrt.dll

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\isrt.dll
        • Size 1.4MB
        • SHA256 53595e3869a9bd877f25807c1784ef001466bdadffbed5b55a641d1cdddf08ad
        • MD5 SHA1 SHA512 SSDEEP TLSH

        license.txt

        • Path C:\Users\Admin\AppData\Local\Temp\{DAFD9B01-60D5-4448-9A9F-222B0B9B26A4}\{D3BD801F-F6A5-469F-BF10-33BC002D9A95}\license.txt
        • Size 255B
        • SHA256 fbfb9230fda46356660886015d28ba4bbf79113208c6f6bc70394c9510fbd0cf
        • MD5 SHA1 SHA512 TLSH