Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    15/08/2026, 00:10

General

  • Target
    337fa640fcc88f6b779e076ae632a988cb6911cdc811871018f839e98f29226b.exe
  • Size 3.0MB
  • Sample260815-age44scg62
  • SHA256 337fa640fcc88f6b779e076ae632a988cb6911cdc811871018f839e98f29226b
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Executes dropped EXE 9 IoCs
  • Checks whether UAC is enabled 1 TTPs 4 IoCs
  • Drops file in Program Files directory 51 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 IoCs

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

  • Modifies registry class 64 IoCs
  • Suspicious behavior: EnumeratesProcesses 27 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\337fa640fcc88f6b779e076ae632a988cb6911cdc811871018f839e98f29226b.exe
    "C:\Users\Admin\AppData\Local\Temp\337fa640fcc88f6b779e076ae632a988cb6911cdc811871018f839e98f29226b.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4608
    • C:\Users\Admin\AppData\Local\Temp\coccoc_setup\CocCocReal.exe
      "C:\Users\Admin\AppData\Local\Temp\coccoc_setup\CocCocReal.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3520
      • C:\Windows\SystemTemp\CocCoc3520_34909940\bin\updater.exe
        "C:\Windows\SystemTemp\CocCoc3520_34909940\bin\updater.exe" --install=appguid={C0CC0CBB-47DD-46FF-A04D-7011A06486E1}&appname=C%E1%BB%91c%20C%E1%BB%91c&needsadmin=prefers&usagestats=1&lang=vi&client={XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX}&brand=XXXX&ap=arch_x64 --enable-logging --vmodule=*/components/winhttp/*=1,*/components/update_client/*=2,*/chrome/enterprise_companion/*=2,*/chrome/updater/*=2
        3⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4056
        • C:\Windows\SystemTemp\CocCoc3520_34909940\bin\updater.exe
          C:\Windows\SystemTemp\CocCoc3520_34909940\bin\updater.exe --crash-handler --system "--database=C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad" --url=https://browser-crashes.coccoc.com/cr/report --annotation=prod=CocCocUpdater --annotation=ver=149.0.7827.202 "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log" "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl" --initial-client-data=0x2e0,0x2e4,0x2e8,0x2dc,0x2ec,0x12491c8,0x12491d4,0x12491e0
          4⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:6364
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\system32\WindowsPowerShell\v1.0\powershell.exe" -w hidden -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\Temp\coccoc_setup\payload.ps1"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:6372
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\rmqcqea2\rmqcqea2.cmdline"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:6028
        • C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
          C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES8311.tmp" "c:\Users\Admin\AppData\Local\Temp\rmqcqea2\CSCE68F113DC1DF4844AB1BF9292D060F2.TMP"
          4⤵
            PID:3476
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 6372 -s 2288
          3⤵
          • Program crash
          PID:2812
    • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
      "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --system --windows-service --service=update-internal
      1⤵
      • Executes dropped EXE
      • Checks whether UAC is enabled
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:244
      • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
        "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --crash-handler --system "--database=C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad" --url=https://browser-crashes.coccoc.com/cr/report --annotation=prod=CocCocUpdater --annotation=ver=149.0.7827.202 "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log" "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl" --initial-client-data=0x2d4,0x2d8,0x2dc,0x2d0,0x2e0,0xbb91c8,0xbb91d4,0xbb91e0
        2⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        PID:2820
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 6372 -ip 6372
      1⤵
        PID:3188
      • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
        "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --system --windows-service --service=update
        1⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4652
        • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
          "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --crash-handler --system "--database=C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad" --url=https://browser-crashes.coccoc.com/cr/report --annotation=prod=CocCocUpdater --annotation=ver=149.0.7827.202 "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log" "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl" --initial-client-data=0x2d4,0x2d8,0x2dc,0x2d0,0x2e0,0xbb91c8,0xbb91d4,0xbb91e0
          2⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          PID:5820
      • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
        "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --system --windows-service --service=update
        1⤵
        • Executes dropped EXE
        • Checks whether UAC is enabled
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:4948
        • C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe
          "C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\updater.exe" --crash-handler --system "--database=C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad" --url=https://browser-crashes.coccoc.com/cr/report --annotation=prod=CocCocUpdater --annotation=ver=149.0.7827.202 "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log" "--attachment=C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl" --initial-client-data=0x2d4,0x2d8,0x2dc,0x2d0,0x2e0,0xbb91c8,0xbb91d4,0xbb91e0
          2⤵
          • Executes dropped EXE
          • Drops file in Program Files directory
          • System Location Discovery: System Language Discovery
          PID:5448

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            55b2b4ea-8c8f-403f-aaaa-99743f7df7ef.dmp

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad\reports\55b2b4ea-8c8f-403f-aaaa-99743f7df7ef.dmp
            • Size 307KB
            • SHA256 3e6ab227d5f6c3abcfe8132ee10137e8e7d928b1603bce56c73938841d8b09ee
            • MD5 SHA1 SHA512 SSDEEP TLSH

            settings.dat

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\149.0.7827.202\Crashpad\settings.dat
            • Size 40B
            • SHA256 a8cdcc5e754b7352de0341743fb65f6a57f73b2a240e3c5d9b0d7f9c4c89c42d
            • MD5 SHA1 SHA512

            prefs.json

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\prefs.json
            • Size 234B
            • SHA256 7a4bd84910c086677c817acf13e5f87a6b810173948a0a394714c44584a0c716
            • MD5 SHA1 SHA512 TLSH

            prefs.json

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\prefs.json
            • Size 51B
            • SHA256 99f83a8bcbfd79f751c05e3c60041bbe76a86f229ad81b349b68b24fa30d00b1
            • MD5 SHA1 SHA512 TLSH

            prefs.json

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\prefs.json
            • Size 85B
            • SHA256 dd63abe12aacd50a6686b9e6448d384d3b9a0ed5cd51ef49c013b2c0a7540d15
            • MD5 SHA1 SHA512 TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 3KB
            • SHA256 8a68aeb7e512d8dca31e70c8edbc96ae2dbc88f35d6eee453d4fdc7de17d4999
            • MD5 SHA1 SHA512 TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 3KB
            • SHA256 5ab2e51c169a77d67091bf0a4447524b3117fb314f0367f6b0f1302a70e44acf
            • MD5 SHA1 SHA512 TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 8KB
            • SHA256 6c185972a5c0220baaa60c13c9ed5e3262cbd47035da010492323406ac320051
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 12KB
            • SHA256 7e6ad055ab9a68ecfbb2cb6e9341671833eb4ee517c4f6452ec5474b9c3ef510
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 16KB
            • SHA256 16873783f8222ab33e085ac2dc975f0854edb1f8124f22da89423ec49ecd96b2
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 19KB
            • SHA256 2a27febc0d236f6d2f7d3de7803c49ed420b5bc7a835d044ef0a902b4176d1e8
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater.log

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater.log
            • Size 22KB
            • SHA256 f65673929f2a045c36763bf0dfaaa72324aa7c0622df29c25a477cebdf43d663
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 1KB
            • SHA256 6c449815ef45f43da05ed2b692a33a91cf234fa3e0a3c7060f109728784afc9d
            • MD5 SHA1 SHA512 TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 3KB
            • SHA256 38e4543867729b99593a1acf4ef606317b489e4e8c901b6dfc40f7a19379ae93
            • MD5 SHA1 SHA512 TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 4KB
            • SHA256 801086e23214f7dd7fa7b970419fb669f34b4a2c1392608aba6df1afd6eb1170
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 6KB
            • SHA256 bd84d5f595d09db4421a7380db98e9be80e36f4475e8affb674a771f4735d35b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 7KB
            • SHA256 eacc3d833dc22d5494525f82d036572ff91c64eb648ba909ca647e7aa625574d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            updater_history.jsonl

            • Path C:\Program Files (x86)\CocCoc\CocCocUpdater\updater_history.jsonl
            • Size 8KB
            • SHA256 5cf50e743d62b97c204d5792c6b13193430544ccfce427f172b3bf0da3d719ae
            • MD5 SHA1 SHA512 SSDEEP TLSH

            RES8311.tmp

            • Path C:\Users\Admin\AppData\Local\Temp\RES8311.tmp
            • Size 1KB
            • SHA256 42ef947aef5b6394f757b738547ff3e9e7fd62c4f5fc72c7884242d4f38ed6a8
            • MD5 SHA1 SHA512 TLSH

            CocCocReal.exe

            • Path C:\Users\Admin\AppData\Local\Temp\coccoc_setup\CocCocReal.exe
            • Size 13.0MB
            • SHA256 7bd45b747077934cb5d27f6d68294b9b60b690639ae5cdfc9601e733493bc9e5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            payload.ps1

            • Path C:\Users\Admin\AppData\Local\Temp\coccoc_setup\payload.ps1
            • Size 1KB
            • SHA256 c820bdd54346fe2d4b35af9f5ff8d32956bb1fb3d01b385495effe655d7bbd44
            • MD5 SHA1 SHA512 TLSH

            rmqcqea2.dll

            • Path C:\Users\Admin\AppData\Local\Temp\rmqcqea2\rmqcqea2.dll
            • Size 3KB
            • SHA256 631fb8772aae75d3b1d6d4750586504b0013653cbd88ca2784a7ffe7be7f8b95
            • MD5 SHA1 SHA512 TLSH

            uninstall.cmd

            • Path C:\Windows\SystemTemp\CocCoc3520_34909940\bin\uninstall.cmd
            • Size 653B
            • SHA256 91e7813ff080841ac892b77e2fbf752f4a5b0a8c073348b0141842a5e70f5fcf
            • MD5 SHA1 SHA512 TLSH

            updater.exe

            • Path C:\Windows\SystemTemp\CocCoc3520_34909940\bin\updater.exe
            • Size 8.0MB
            • SHA256 a658b562f4621fdc26b7273173115edb21c41b239ac1445c1d78bea0242eb10b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            CSCE68F113DC1DF4844AB1BF9292D060F2.TMP

            • Path \??\c:\Users\Admin\AppData\Local\Temp\rmqcqea2\CSCE68F113DC1DF4844AB1BF9292D060F2.TMP
            • Size 652B
            • SHA256 c9d78e5b871797de1d62b4f25984fc40cbf79382e8d1d1556a7eae6a9e1dd173
            • MD5 SHA1 SHA512 TLSH

            rmqcqea2.0.cs

            • Path \??\c:\Users\Admin\AppData\Local\Temp\rmqcqea2\rmqcqea2.0.cs
            • Size 365B
            • SHA256 d5d1603c7fe6c651962d8af60aa15852ca013e89e322025034aed91efa6accd1
            • MD5 SHA1 SHA512 TLSH

            rmqcqea2.cmdline

            • Path \??\c:\Users\Admin\AppData\Local\Temp\rmqcqea2\rmqcqea2.cmdline
            • Size 369B
            • SHA256 c0a0daba54036d42bcb603a21c3263492689ac5e272f2ce09bbaec5f36266985
            • MD5 SHA1 SHA512 TLSH

            memory/4608-10-0x0000000000400000-0x000000000045E000-memory.dmp

            memory/6372-45-0x0000000007B90000-0x000000000820C000-memory.dmp

            memory/6372-24-0x00000000054F0000-0x0000000005B3A000-memory.dmp

            memory/6372-32-0x0000000005C20000-0x0000000005C86000-memory.dmp

            memory/6372-41-0x0000000006180000-0x000000000619E000-memory.dmp

            memory/6372-28-0x0000000005480000-0x00000000054A2000-memory.dmp

            memory/6372-29-0x0000000005BB0000-0x0000000005C16000-memory.dmp

            memory/6372-40-0x0000000005C90000-0x0000000005FEB000-memory.dmp

            memory/6372-46-0x0000000006760000-0x000000000677A000-memory.dmp

            memory/6372-25-0x00000000743A0000-0x0000000074B5C000-memory.dmp

            memory/6372-68-0x00000000073A0000-0x00000000073A1000-memory.dmp

            memory/6372-94-0x00000000743A0000-0x0000000074B5C000-memory.dmp

            memory/6372-19-0x00000000743A0000-0x0000000074B5C000-memory.dmp

            memory/6372-42-0x00000000061A0000-0x00000000061EC000-memory.dmp

            memory/6372-14-0x0000000004CD0000-0x0000000004D06000-memory.dmp

            memory/6372-13-0x00000000743B2000-0x00000000743B3000-memory.dmp

            memory/6372-67-0x0000000007390000-0x0000000007398000-memory.dmp