Analysis

  • max time kernel
    20s
  • max time network
    27s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    20/04/2026, 13:00

General

  • Target
    https://api.instafin.pl/api/p/agreements/download-preview-doc/credit_information_form_preview?code=pdl&amount=1000&tenor=30
  • Sample260420-p8metsfs7x

Malware Config

Signatures

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Checks processor information in registry 2 TTPs 18 IoCs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 36 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:\Program Files\Mozilla Firefox\firefox.exe
    "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url "https://api.instafin.pl/api/p/agreements/download-preview-doc/credit_information_form_preview?code=pdl&amount=1000&tenor=30"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4780
    • C:\Program Files\Mozilla Firefox\firefox.exe
      "C:\Program Files\Mozilla Firefox\firefox.exe" -osint -url https://api.instafin.pl/api/p/agreements/download-preview-doc/credit_information_form_preview?code=pdl&amount=1000&tenor=30
      2⤵
      • Checks processor information in registry
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:6048
      • C:\Program Files\Mozilla Firefox\firefox.exe
        "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 1968 -prefsLen 27097 -prefMapHandle 1972 -prefMapSize 270279 -ipcHandle 2044 -initialChannelId {bd2844e3-0f52-4784-a9dd-ed83e54506b5} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -appDir "C:\Program Files\Mozilla Firefox\browser" - 1 gpu
        3⤵
          PID:6080
        • C:\Program Files\Mozilla Firefox\firefox.exe
          "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 2424 -prefsLen 27133 -prefMapHandle 2428 -prefMapSize 270279 -ipcHandle 2436 -initialChannelId {2bf5d17e-1ffd-427d-a947-9e4e6b2e9c95} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 2 socket
          3⤵
            PID:5776
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 3912 -prefsLen 25164 -prefMapHandle 3916 -prefMapSize 270279 -jsInitHandle 3920 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 3928 -initialChannelId {452f0cc4-574b-401f-8977-5488a19eaf6d} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 3 tab
            3⤵
            • Checks processor information in registry
            PID:5424
          • C:\Program Files\Mozilla Firefox\firefox.exe
            "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -prefsHandle 4080 -prefsLen 27274 -prefMapHandle 4084 -prefMapSize 270279 -ipcHandle 4156 -initialChannelId {1f7eeead-4dbb-4db1-836a-a90d4a487c99} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -appDir "C:\Program Files\Mozilla Firefox\browser" - 4 rdd
            3⤵
              PID:3284
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 4388 -prefsLen 34773 -prefMapHandle 4392 -prefMapSize 270279 -jsInitHandle 4396 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 4360 -initialChannelId {7d6d400f-4407-49f8-8354-3447a0c13baa} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 5 tab
              3⤵
              • Checks processor information in registry
              PID:4472
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -parentBuildID 20250130195129 -sandboxingKind 0 -prefsHandle 4928 -prefsLen 35010 -prefMapHandle 4932 -prefMapSize 270279 -ipcHandle 4944 -initialChannelId {a2961926-22e9-4643-ba63-38916080f308} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 6 utility
              3⤵
              • Checks processor information in registry
              PID:3412
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 1108 -prefsLen 32952 -prefMapHandle 3300 -prefMapSize 270279 -jsInitHandle 3304 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5396 -initialChannelId {2347bf04-8821-4fce-87dd-3f8080e67f19} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 7 tab
              3⤵
              • Checks processor information in registry
              PID:1848
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 5416 -prefsLen 32952 -prefMapHandle 5420 -prefMapSize 270279 -jsInitHandle 5424 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5432 -initialChannelId {4721e248-d677-4bd9-80c8-5ddfe5376c34} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 8 tab
              3⤵
              • Checks processor information in registry
              PID:3568
            • C:\Program Files\Mozilla Firefox\firefox.exe
              "C:\Program Files\Mozilla Firefox\firefox.exe" -contentproc -isForBrowser -prefsHandle 2852 -prefsLen 32952 -prefMapHandle 2856 -prefMapSize 270279 -jsInitHandle 2860 -jsInitLen 253512 -parentBuildID 20250130195129 -ipcHandle 5784 -initialChannelId {9a4fb962-8e3e-4a58-ae9b-765ffc6aa9fd} -parentPid 6048 -crashReporter "\\.\pipe\gecko-crash-server-pipe.6048" -win32kLockedDown -appDir "C:\Program Files\Mozilla Firefox\browser" - 9 tab
              3⤵
              • Checks processor information in registry
              PID:2680

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              data.safe.bin

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\db\data.safe.bin
              • Size 7KB
              • SHA256 41a2cf4abf147515090f59f9ecf73fd78a91a75eb332456cd64640cb486af86f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\db\data.safe.tmp
              • Size 6KB
              • SHA256 2b8af52f115d5e4122d50dd6609ba33328042d5985c806e28d1d35356f6d9762
              • MD5 SHA1 SHA512 SSDEEP TLSH

              data.safe.tmp

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\db\data.safe.tmp
              • Size 7KB
              • SHA256 3d5722f456934821c9473598a331fd29e494908098f5c02ee55bc75274b11cb4
              • MD5 SHA1 SHA512 SSDEEP TLSH

              events

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\events\events
              • Size 1KB
              • SHA256 0e8775904c54a0ed9916145970e3879e7d5d2cc6a4506861af1dfe58d33f0750
              • MD5 SHA1 SHA512 TLSH

              0cebaa44-efb0-4782-8845-73262fd3e457

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\0cebaa44-efb0-4782-8845-73262fd3e457
              • Size 235B
              • SHA256 2299dd64f1cbcd4c866283fb67a4a3b6a6ddb2f207094561cb664baa2fcf3048
              • MD5 SHA1 SHA512 TLSH

              0d359bb2-55cf-4134-8028-4187240f0705

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\0d359bb2-55cf-4134-8028-4187240f0705
              • Size 883B
              • SHA256 2f6c2c0a0644409638777803c6004faaf6847bcfd650fe1f2a7e64b3961f8523
              • MD5 SHA1 SHA512 TLSH

              39678dce-a5e4-4e7b-a1b1-11e5c560f29a

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\39678dce-a5e4-4e7b-a1b1-11e5c560f29a
              • Size 2KB
              • SHA256 a756579a3086ea18497ad1611e7e4db9658eed7a70e16323a51c3df3225a6b09
              • MD5 SHA1 SHA512 TLSH

              a5e510df-241b-4c6f-8ff7-3baae7520af7

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\a5e510df-241b-4c6f-8ff7-3baae7520af7
              • Size 16KB
              • SHA256 6fea75f9c72225db2f33b31d6e732266a1d7b64c6b276b9a1b9cc6a0d3409968
              • MD5 SHA1 SHA512 SSDEEP TLSH

              c5e51220-6c54-474f-829f-9b9294c52829

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\c5e51220-6c54-474f-829f-9b9294c52829
              • Size 235B
              • SHA256 fb7ee87860f35617daaa85088366e748d87d61b46d2f94f6bbf2cd733fcd8cee
              • MD5 SHA1 SHA512 TLSH

              d138c7e7-a0d3-4dbb-b80a-933e3c83bc0a

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\datareporting\glean\pending_pings\d138c7e7-a0d3-4dbb-b80a-933e3c83bc0a
              • Size 886B
              • SHA256 c23e54c7d82b83764e82ed59fb8d1f80fb01a14ea6f3ab9876fbc18b2e75f955
              • MD5 SHA1 SHA512 TLSH

              prefs-1.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\prefs-1.js
              • Size 6KB
              • SHA256 65432df030e8ea0eed7c5831a6c54a1b406cec402a1387b863b153ce1bc54e02
              • MD5 SHA1 SHA512 SSDEEP TLSH

              prefs.js

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\prefs.js
              • Size 6KB
              • SHA256 7aeb5489da50fb8daf4dff7a3ec7deba7d569673f7a546ca89ad1e34eb84d976
              • MD5 SHA1 SHA512 SSDEEP TLSH

              3870112724rsegmnoittet-es.sqlite

              • Path C:\Users\Admin\AppData\Roaming\Mozilla\Firefox\Profiles\ljuooy03.default-release\storage\permanent\chrome\idb\3870112724rsegmnoittet-es.sqlite
              • Size 3.2MB
              • SHA256 a2d145e9a3805148984964c3a777a460cf8f997335bc0c2c1acbca3b97248786
              • MD5 SHA1 SHA512 SSDEEP TLSH