Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    26/06/2026, 12:45

General

  • Target
    uxtheme.dll
  • Size 220KB
  • Sample260626-py547act4j
  • SHA256 20471a44987c563b0701f18e5fa20b797fe046674f67563c8904b9a90e056394
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file 2 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Looks up external IP address via web service 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Drops file in System32 directory 1 IoCs
  • Checks processor information in registry 2 TTPs 4 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 20 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:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\uxtheme.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:6136
    • C:\Windows\explorer.exe
      explorer.exe
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1996
      • C:\Windows\explorer.exe
        explorer.exe
        3⤵
        • Downloads MZ/PE file
        • Drops file in System32 directory
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2904
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe"
          4⤵
            PID:6072
          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
            4⤵
              PID:816
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe"
              4⤵
                PID:3864
              • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
                4⤵
                  PID:1560
          • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
            "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
            1⤵
              PID:6008
            • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
              "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
              1⤵
                PID:6140
              • C:\Users\Admin\AppData\Local\demo.exe
                C:\Users\Admin\AppData\Local\demo.exe
                1⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Checks processor information in registry
                • Enumerates system info in registry
                • Suspicious use of WriteProcessMemory
                PID:3248
                • C:\Windows\explorer.exe
                  explorer.exe
                  2⤵
                  • Suspicious use of WriteProcessMemory
                  PID:5700
                  • C:\Windows\explorer.exe
                    explorer.exe
                    3⤵
                    • Suspicious use of WriteProcessMemory
                    PID:3692
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe"
                      4⤵
                        PID:1712
                      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
                        4⤵
                          PID:4640
                  • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                    "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                    1⤵
                      PID:2144
                    • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                      "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                      1⤵
                        PID:4516
                      • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                        "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                        1⤵
                          PID:5072
                        • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                          "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                          1⤵
                            PID:2568
                          • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                            1⤵
                              PID:1492
                            • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                              "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                              1⤵
                                PID:3860
                              • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                1⤵
                                  PID:904
                                • C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe
                                  "C:\Program Files\Google\Chrome\Application\140.0.7339.81\elevation_service.exe"
                                  1⤵
                                    PID:3876
                                  • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                                    "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                                    1⤵
                                      PID:1768
                                    • C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe
                                      "C:\Program Files (x86)\Microsoft\Edge\Application\139.0.3405.125\elevation_service.exe"
                                      1⤵
                                        PID:3356

                                      Network

                                            MITRE ATT&CK Enterprise v16

                                            Replay Monitor

                                            Loading Replay Monitor...

                                            Downloads

                                            223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
                                            • Size 2KB
                                            • SHA256 c6c25f2814546991b227f44b281544df40a62c26c3cdb9ff23c928011c0aa841
                                            • MD5 SHA1 SHA512 TLSH

                                            3538626A1FCCCA43C7E18F220BDD9B02

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3538626A1FCCCA43C7E18F220BDD9B02
                                            • Size 1KB
                                            • SHA256 a9d89d47e6b76019d167134d4ca537dc48d8987fcb591b1e601c97cc1c02b8b4
                                            • MD5 SHA1 SHA512 TLSH

                                            A1593701BD276673B04DEC503D761A9E_E1F945BF658DCC7B1DD3A7B88D3398BA

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\A1593701BD276673B04DEC503D761A9E_E1F945BF658DCC7B1DD3A7B88D3398BA
                                            • Size 727B
                                            • SHA256 c43606ad0ba1e79a1f6b17a36486c2f2d4bc07d4bc3b63dd09d693e223d22367
                                            • MD5 SHA1 SHA512 TLSH

                                            B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                                            • Size 1KB
                                            • SHA256 fbcd92d1f6b864d6eef724db91cdd3023d16406ff26d851fd7ebe02383e8422d
                                            • MD5 SHA1 SHA512 TLSH

                                            DF2B6F1E6BCC61CEBCA21A02089A3B19_4F548F7827F125ACC54E53397A41333A

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\DF2B6F1E6BCC61CEBCA21A02089A3B19_4F548F7827F125ACC54E53397A41333A
                                            • Size 2KB
                                            • SHA256 e6ffa0d6a177681a72530e79405d082d62040c30d78578a90a54ef60b626cf23
                                            • MD5 SHA1 SHA512 TLSH

                                            223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\223DE96EE265046957A660ED7C9DD9E7_EFF9B9BA98DEAA773F261FA85A0B1771
                                            • Size 450B
                                            • SHA256 d5d4014e4942f876d69fbe96deb2432c8d35951852eac139edaf5dcb211bb99c
                                            • MD5 SHA1 SHA512 TLSH

                                            3538626A1FCCCA43C7E18F220BDD9B02

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3538626A1FCCCA43C7E18F220BDD9B02
                                            • Size 330B
                                            • SHA256 5fd62d8cf566586511a77d503a4e887170f8fa5f534118a673e347142751a791
                                            • MD5 SHA1 SHA512 TLSH

                                            A1593701BD276673B04DEC503D761A9E_E1F945BF658DCC7B1DD3A7B88D3398BA

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\A1593701BD276673B04DEC503D761A9E_E1F945BF658DCC7B1DD3A7B88D3398BA
                                            • Size 484B
                                            • SHA256 4159f12ac0991360900ba8ac66bd4d574fa1cf8d3f3802fbf64cd5314c5304fc
                                            • MD5 SHA1 SHA512 TLSH

                                            B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
                                            • Size 482B
                                            • SHA256 5bf6fbd5b1bd6fc77984784dc7a9a01f06ae589b3dd1bb6df7a2a7a351477967
                                            • MD5 SHA1 SHA512 TLSH

                                            DF2B6F1E6BCC61CEBCA21A02089A3B19_4F548F7827F125ACC54E53397A41333A

                                            • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\DF2B6F1E6BCC61CEBCA21A02089A3B19_4F548F7827F125ACC54E53397A41333A
                                            • Size 474B
                                            • SHA256 a4d836640a5bd5ada7bdcf6137f87927e91f9c95139443d8e12aea0091749a98
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\1UDHZB\Chrome\fingerprint.json
                                            • Size 970B
                                            • SHA256 b45cbd22f3b779679e6faa317a298f828505490f2eb5087fbd21c4df459ef4d2
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\1UDHZB\Edge\fingerprint.json
                                            • Size 969B
                                            • SHA256 8c85ed9b08ad410aabe20f0aa1458c77a957048a5309cd9b5710e48e74cb53cd
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\PqLUZ6\Chrome\fingerprint.json
                                            • Size 970B
                                            • SHA256 581c685edea8a7f45b4b0d1012574bfcf4eaf2f534eb3776d7e0e7c289a7b90a
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\PqLUZ6\Edge\fingerprint.json
                                            • Size 969B
                                            • SHA256 5a96d271a7d80c00693bc614a625f67b586c8fe158aa2fbbb122c79bdf51bef7
                                            • MD5 SHA1 SHA512 TLSH

                                            SumatraPDF-settings.txt

                                            • Path C:\Users\Admin\AppData\Local\SumatraPDF-settings.txt
                                            • Size 2KB
                                            • SHA256 71fa07dfd2cbae23a880630604680112b3766c5a43f94cb9e2f0828f8f70e2e5
                                            • MD5 SHA1 SHA512 TLSH

                                            UxTheme.dll

                                            • Path C:\Users\Admin\AppData\Local\UxTheme.dll
                                            • Size 220KB
                                            • SHA256 20471a44987c563b0701f18e5fa20b797fe046674f67563c8904b9a90e056394
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            cookies.json

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Chrome\Default\cookies.json
                                            • Size 341B
                                            • SHA256 497ed0912a1dff680cbbab05f2a0bb9e330969a36fb2e341d8009f6f24226b17
                                            • MD5 SHA1 SHA512 TLSH

                                            cookies.txt

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Chrome\Default\cookies.txt
                                            • Size 253B
                                            • SHA256 ca4f9153d182d2dc15530f1e15b55dfdeea1ae60ba1a4f5294524999f61d5b2a
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Chrome\fingerprint.json
                                            • Size 970B
                                            • SHA256 88c2fbbd640716dc314d07867e740ce506e29d76ee3b1b188f94cc5d704f7077
                                            • MD5 SHA1 SHA512 TLSH

                                            cookies.json

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Edge\Default\cookies.json
                                            • Size 343B
                                            • SHA256 b7e55ccf30a6f7f0ca37e66d2502dc918602a7ee166615c19eee5bc6106e32dd
                                            • MD5 SHA1 SHA512 TLSH

                                            cookies.txt

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Edge\Default\cookies.txt
                                            • Size 255B
                                            • SHA256 17f588a55e22da1b042ec81f75fe31c522790a5b4f57f1b711991df81936db91
                                            • MD5 SHA1 SHA512 TLSH

                                            fingerprint.json

                                            • Path C:\Users\Admin\AppData\Local\Xwb9PT\Edge\fingerprint.json
                                            • Size 969B
                                            • SHA256 88a365bae9bd7e4df2e45a2fca3d3098e614cbdf08cc12ab3139448b6f53991e
                                            • MD5 SHA1 SHA512 TLSH

                                            demo.exe

                                            • Path C:\Users\Admin\AppData\Local\demo.exe
                                            • Size 19.4MB
                                            • SHA256 719f689b34f47be8ca105ce8484948474dafde0e106bab599e4a89326070c3d0
                                            • MD5 SHA1 SHA512 SSDEEP TLSH

                                            memory/2904-161-0x00000000038E0000-0x0000000003A7A000-memory.dmp

                                            memory/2904-18-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-52-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-49-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-46-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-44-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-42-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-54-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-47-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-41-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-204-0x00000000033F0000-0x0000000003555000-memory.dmp

                                            memory/2904-0-0x00000000023E0000-0x00000000023E4000-memory.dmp

                                            memory/2904-17-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-165-0x00000000038E0000-0x0000000003A7A000-memory.dmp

                                            memory/2904-166-0x00000000038E0000-0x0000000003A7A000-memory.dmp

                                            memory/2904-48-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-156-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-45-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-16-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-14-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-37-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-34-0x00000000033F0000-0x0000000003555000-memory.dmp

                                            memory/2904-7-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-6-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-8-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-9-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-15-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-13-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-12-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-43-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-11-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-10-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-1-0x00000000024F0000-0x0000000002545000-memory.dmp

                                            memory/2904-50-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-51-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/2904-53-0x0000000003870000-0x0000000003A0A000-memory.dmp

                                            memory/3692-75-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-102-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-104-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-105-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-107-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-108-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-111-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-110-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-100-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-99-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-112-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-109-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-106-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-103-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-101-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-95-0x0000000003570000-0x000000000370A000-memory.dmp

                                            memory/3692-79-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-70-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-71-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-73-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-72-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-74-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-77-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-76-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-78-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-81-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-82-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-80-0x0000000000980000-0x00000000009D5000-memory.dmp

                                            memory/3692-65-0x0000000000980000-0x00000000009D5000-memory.dmp