Analysis

  • max time kernel
    139s
  • max time network
    143s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    14/06/2024, 19:18

General

  • Target
    Client-built.exe
  • Size 78KB
  • Sample240614-xz3pfssfre
  • SHA256 1a3072f72b2747d1bbe6f8aec7945d7753c061cd02ab1a1632963d13ba9e61bd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • discordrat

Attributes
  • discord_token

    MTIxMTA5OTM2NzcyMTc5NTYzNA.GqkwcX.UOjwiFdGIpv_jY2sOCDo02zExIyfhOxTIiOv6c

  • server_id

    1251241660453752944

Signatures

  • Discord RAT

    A RAT written in C# using Discord as a C2.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 7 IoCs
  • Checks processor information in registry 2 TTPs 6 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 4 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\Client-built.exe
    "C:\Users\Admin\AppData\Local\Temp\Client-built.exe"
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:228
  • C:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe"
      2⤵
      • Checks processor information in registry
      • Modifies registry class
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2164
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.0.862014242\427620563" -parentBuildID 20230214051806 -prefsHandle 1756 -prefMapHandle 1748 -prefsLen 22076 -prefMapSize 235121 -appDir "C:\Program Files\Mozilla Firefox\browser" - {16543862-2e4a-4a4c-a657-5f1bceeb30f2} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 1836 2a13d00a658 gpu
        3⤵
          PID:2676
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.1.908806040\1661294100" -parentBuildID 20230214051806 -prefsHandle 2384 -prefMapHandle 2380 -prefsLen 22112 -prefMapSize 235121 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {28e5d605-c5ca-4375-94bf-3c07b65fefc6} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 2404 2a13028a258 socket
          3⤵
            PID:4704
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.2.587687130\202349496" -childID 1 -isForBrowser -prefsHandle 2720 -prefMapHandle 2832 -prefsLen 22150 -prefMapSize 235121 -jsInitHandle 1260 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {d6bc858f-4ba9-44bd-a04d-18c2cf0d7838} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 2808 2a13faf0c58 tab
            3⤵
              PID:2004
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.3.481977903\1963576383" -childID 2 -isForBrowser -prefsHandle 3672 -prefMapHandle 3668 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1260 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {afcf7f5f-5b76-4b52-a850-27ea8961c2d6} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 3680 2a142047858 tab
              3⤵
                PID:1800
              • C:\Program Files\Mozilla Firefox\firefox.exe
                "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.4.240029533\1209865868" -childID 3 -isForBrowser -prefsHandle 5132 -prefMapHandle 5128 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1260 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {33f67b57-4013-4e76-9787-9b8f242df90f} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 5144 2a143c93458 tab
                3⤵
                  PID:2688
                • C:\Program Files\Mozilla Firefox\firefox.exe
                  "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.5.1627953510\1775958883" -childID 4 -isForBrowser -prefsHandle 5288 -prefMapHandle 5292 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1260 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {2503d298-974c-4b1b-9b21-3376ee3ebf2a} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 5276 2a14456ee58 tab
                  3⤵
                    PID:3308
                  • C:\Program Files\Mozilla Firefox\firefox.exe
                    "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc --channel="2164.6.1388573839\2005404097" -childID 5 -isForBrowser -prefsHandle 5472 -prefMapHandle 5476 -prefsLen 27616 -prefMapSize 235121 -jsInitHandle 1260 -jsInitLen 246560 -a11yResourceId 64 -parentBuildID 20230214051806 -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - {1f06acb7-44dc-4698-ab27-77a79eace4bc} 2164 "\\.\pipe\gecko-crash-server-pipe.2164" 5464 2a14456be58 tab
                    3⤵
                      PID:3680

                Network

                      MITRE ATT&CK Enterprise v15

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      activity-stream.discovery_stream.json.tmp

                      • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\rfj66zji.default-release\activity-stream.discovery_stream.json.tmp
                      • Size 23KB
                      • SHA256 d3a30b926d206130b4c6debf42260b7a975def0970bd0f27db6471d18c574b2c
                      • MD5 SHA1 SHA512 SSDEEP

                      activity-stream.discovery_stream.json.tmp

                      • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\rfj66zji.default-release\activity-stream.discovery_stream.json.tmp
                      • Size 24KB
                      • SHA256 3ec14a8b436b2f4489e53b739b4b12bdb34e96033c246a03d42b7532330d5a2e
                      • MD5 SHA1 SHA512 SSDEEP

                      383A97A57B113BD106DE6984E6DBA5F537327263

                      • Path C:\Users\Admin\AppData\Local\Mozilla\Firefox\Profiles\rfj66zji.default-release\cache2\entries\383A97A57B113BD106DE6984E6DBA5F537327263
                      • Size 13KB
                      • SHA256 610141f50d5038cbcff527549e862eb3a14403b2602ba5d9cb7b0d1d19bd7530
                      • MD5 SHA1 SHA512 SSDEEP

                      tmpaddon

                      • Path C:\Users\Admin\AppData\Local\Temp\tmpaddon
                      • Size 442KB
                      • SHA256 a9f4281f82b3579581c389e8583dc9f477c7fd0e20c9dfc91a2e611e21e3407e
                      • MD5 SHA1 SHA512 SSDEEP

                      tmpaddon-1

                      • Path C:\Users\Admin\AppData\Local\Temp\tmpaddon-1
                      • Size 8.0MB
                      • SHA256 345d44e3aa3e1967d186a43d732c8051235c43458169a5d7d371780a6475ee42
                      • MD5 SHA1 SHA512 SSDEEP

                      gmpopenh264.dll

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.dll
                      • Size 997KB
                      • SHA256 1ed7877024be63a049da98733fd282c16bd620530a4fb580dacec3a78ace914e
                      • MD5 SHA1 SHA512 SSDEEP

                      gmpopenh264.info

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-gmpopenh264\1.8.1.2\gmpopenh264.info
                      • Size 116B
                      • SHA256 f526e9f98841d987606efeaff7f3e017ba9fd516c4be83890c7f9a093ea4c47b
                      • MD5 SHA1 SHA512

                      LICENSE.txt

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-widevinecdm\4.10.2557.0\LICENSE.txt
                      • Size 479B
                      • SHA256 2af127b4e00f7303de8271996c0c681063e4dc7abdc7b2a8c3fe5932b9352539
                      • MD5 SHA1 SHA512

                      manifest.json

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-widevinecdm\4.10.2557.0\manifest.json
                      • Size 372B
                      • SHA256 e92d3394635edfb987a7528e0ccd24360e07a299078df2a6967ca3aae22fa2dd
                      • MD5 SHA1 SHA512

                      widevinecdm.dll

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll
                      • Size 11.8MB
                      • SHA256 8ee42d9258e20bbc5bfdfae61605429beb5421ffeaaa0d02b86d4978f4b4ac4e
                      • MD5 SHA1 SHA512 SSDEEP

                      widevinecdm.dll.lib

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.lib
                      • Size 1KB
                      • SHA256 33899a3ebc22cb8ed8de7bd48c1c29486c0279b06d7ef98241c92aef4e3b9237
                      • MD5 SHA1 SHA512

                      widevinecdm.dll.sig

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\gmp-widevinecdm\4.10.2557.0\widevinecdm.dll.sig
                      • Size 1KB
                      • SHA256 68a03f075db104f84afdd8fca45a7e4bff7b55dc1a2a24272b3abe16d8759c81
                      • MD5 SHA1 SHA512

                      prefs-1.js

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\prefs-1.js
                      • Size 10KB
                      • SHA256 70ba35f2520aa30ac1f672404b9435f25baa4ba966ccd9caba25e2bbd5336453
                      • MD5 SHA1 SHA512 SSDEEP

                      prefs-1.js

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\prefs-1.js
                      • Size 8KB
                      • SHA256 f3eb4761c73e449f60c7b13390fd41dfb361bb738e34ac23ea4fd884916ef89a
                      • MD5 SHA1 SHA512 SSDEEP

                      prefs.js

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\prefs.js
                      • Size 6KB
                      • SHA256 f8abf5e10b4271741fcde0bf6c524342db8e18f7426dac842dbba3799d80e926
                      • MD5 SHA1 SHA512 SSDEEP

                      recovery.jsonlz4

                      • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\rfj66zji.default-release\sessionstore-backups\recovery.jsonlz4
                      • Size 1KB
                      • SHA256 a8b0cad5a6974d79dfca10e4d3994b537d6bc6243d9fd45035312a22c6e457ca
                      • MD5 SHA1 SHA512

                      memory/228-0-0x000001909BE10000-0x000001909BE28000-memory.dmp

                      memory/228-63-0x00007FFCEE8A0000-0x00007FFCEF361000-memory.dmp

                      memory/228-61-0x00007FFCEE8A3000-0x00007FFCEE8A5000-memory.dmp

                      memory/228-4-0x00000190B6D20000-0x00000190B7248000-memory.dmp

                      memory/228-3-0x00007FFCEE8A0000-0x00007FFCEF361000-memory.dmp

                      memory/228-2-0x00000190B64E0000-0x00000190B66A2000-memory.dmp

                      memory/228-1-0x00007FFCEE8A3000-0x00007FFCEE8A5000-memory.dmp