Resubmissions

19/04/2026, 00:52

260419-a77xtaaz3j10

17/04/2026, 12:20

260417-ph86xagv6z10

Analysis

  • user interaction
    yes
  • max time kernel
    135s
  • max time network
    117s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    19/04/2026, 00:52

General

  • Target
    QUANTUMBOOST.exe
  • Size 3.0MB
  • Sample260419-a77xtaaz3j
  • SHA256 4ad3818ea21f244e973b12b61148e042dadc75161fdb3d01f63a16491f7854c8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • santa_stealer

C2
  • ioc.exchange

  • ruruurururururu.ru

Attributes
  • post_request

    fa3c16365fd0d67f6035f379df7a375ebe1aa51e99a2dde0db92c906ed003a70

  • url_path

    /api/v1/accounts

  • user_agent

    MastodonClient

Signatures

  • Family: SantaStealer

    SantaStealer is an information stealer written in C.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Credentials from Password Stores: Windows Credential Manager 1 TTPs

    Suspicious access to Credentials History.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • Reads user/profile data of web browsers 3 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

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

  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Checks processor information in registry 2 TTPs 9 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe
    "C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"
    1⤵
    • Checks computer location settings
    • Checks processor information in registry
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:4364
    • C:\Program Files\Google\Chrome\Application\chrome.exe
      "C:\Program Files\Google\Chrome\Application\chrome.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:4344
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      PID:5920
  • 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:4436
    • 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:4672
      • 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:3528
        • 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:836
          • C:\Windows\System32\rundll32.exe
            C:\Windows\System32\rundll32.exe shell32.dll,SHCreateLocalServerRunDll {c82192ee-6cb5-4bc0-9ef0-fb818773790a} -Embedding
            1⤵
              PID:1200
            • C:\Windows\System32\rundll32.exe
              C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
              1⤵
                PID:5680
              • C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe
                "C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"
                1⤵
                • Checks computer location settings
                • Checks processor information in registry
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of WriteProcessMemory
                PID:1716
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe"
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:2356
                • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                  "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
                  2⤵
                  • Suspicious behavior: EnumeratesProcesses
                  PID:4676
              • 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:5940
                • 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:2272
                  • 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:2168
                    • 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:6140
                      • C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe
                        "C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"
                        1⤵
                          PID:1728
                        • C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe
                          "C:\Users\Admin\AppData\Local\Temp\QUANTUMBOOST.exe"
                          1⤵
                          • Checks computer location settings
                          • Checks processor information in registry
                          • Suspicious use of WriteProcessMemory
                          PID:3348
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe"
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:5564
                          • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
                            "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"
                            2⤵
                            • Suspicious behavior: EnumeratesProcesses
                            PID:5804
                        • 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:5532
                          • 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:4808
                            • 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:5220
                              • 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:5436

                                Network

                                      MITRE ATT&CK Enterprise v16

                                      Replay Monitor

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                                      Downloads

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 4KB
                                      • SHA256 a9ba6484ed972512380555da6c3336efd20700f6b3824e24ae6cda9087b8a747
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 593B
                                      • SHA256 79bc9933826f2b1845278e81187858d2ea1f6a1615fb718f76d2d98f8360791b
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 48B
                                      • SHA256 76112147c1775377cfb458ca3a811d8d6ef17781479626e7cc7f6eb611fdc9fb
                                      • MD5 SHA1 SHA512

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 125B
                                      • SHA256 9e1b885b97109b59c41befc228e6ce938ca500d72e2b8d01a7a1b0ad4d6e240a
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 505B
                                      • SHA256 f2d76cbb3b8f8af9f03501e0a979a9cca82802b24bca41b894c5df8e1d8ac689
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 967B
                                      • SHA256 1d02a712a80bf46c84aa733c469ba9a7c4b190fceb5c4d9efe7286939c1c2cea
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1002B
                                      • SHA256 f1cde6e7232b3aa0549124526d22cdb90bfd3fc37376f9c595ae87005984440f
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 788b2b83c8de465925e04cf40251ca2438b1495f448f7e958c0e20829fff6503
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 15a3b9d3fa963859b3723ce49a8f506f546e5c1902155e2b1cc590281e201c2e
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 52118fd7fae519533d1317b8efcaa0b88b94c80074e0411c826454d500c3716f
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 2KB
                                      • SHA256 6adba5a946c1e336a3cfb5d1ff3a591d6e6a0464511443c67a98851a116d67db
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 4KB
                                      • SHA256 b6ef91c78a1ec80624a19af02a4eafbd11a9be7b145cdd1c3dbba434fb4125e6
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 255B
                                      • SHA256 092e0d2dbc48e9974e1fedde43126c53aaf14230d74ffb502d9c2e39c139646e
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1020B
                                      • SHA256 a464639e7ffb8919112ddc52bbb3f22a87e36d982e610eea943adcde08feddfa
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 075786907758d55fde867788cea550774dab0e9812f9d7a151054ca103011fcd
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 6KB
                                      • SHA256 bc6203db2ef1b28f922e90e4ced847b6c6f007167949cc9ed6b74b466d7ee412
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 744B
                                      • SHA256 c528934da415159a46be461ccbe1870eea01cf8bc62b408184830cff14207ee0
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 2KB
                                      • SHA256 df750c8f3da53bf7506159ef04cc12295103d9663ecd3e0126215b309d906b06
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 a2a62463526df543317cc256a067efb34ab77ca59302e9fe14d734fee5d829eb
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 abf1085c86ca4958bbc590579a497d2c1217e30599e1844c713cbddfd57e4b32
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 b1a70ce0fd288ab29c58b58b6ce8850cb46924745052f7f40f5d4c0cfe967737
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 1KB
                                      • SHA256 c93a9944c3313740121b4d05d1b8b519f229f4281b4fb5ad12a1de43c21f6abb
                                      • MD5 SHA1 SHA512 TLSH

                                      Log.txt

                                      • Path C:\Users\Admin\AppData\Local\Temp\Log.txt
                                      • Size 3KB
                                      • SHA256 b182009df6a683442b2909803ce15e63d6dd0b030d932aa68a2842a36a68271a
                                      • MD5 SHA1 SHA512 TLSH

                                      pwd_4240.db

                                      • Path C:\Users\Admin\AppData\Local\Temp\pwd_4240.db
                                      • Size 40KB
                                      • SHA256 06aeb2f9c1ee642348c091fb27541c143545354c273055ce30832e0f61aedf81
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      pwd_5864.db

                                      • Path C:\Users\Admin\AppData\Local\Temp\pwd_5864.db
                                      • Size 56KB
                                      • SHA256 a36a4989ed48954499586d6551e61d6bccfc7bee269b4eab0bb836e394c24c7c
                                      • MD5 SHA1 SHA512 SSDEEP TLSH

                                      memory/836-41-0x000002296EE00000-0x000002296EFA1000-memory.dmp

                                      memory/1716-382-0x000002A26A560000-0x000002A26A701000-memory.dmp

                                      memory/1716-381-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/1728-379-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/1728-380-0x000001533F930000-0x000001533FAD1000-memory.dmp

                                      memory/2168-230-0x000002C5F84F0000-0x000002C5F8691000-memory.dmp

                                      memory/3348-462-0x000001B2F99C0000-0x000001B2F9B61000-memory.dmp

                                      memory/3348-464-0x000001B2F99C0000-0x000001B2F9B61000-memory.dmp

                                      memory/3348-461-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/3528-39-0x0000016117800000-0x00000161179A1000-memory.dmp

                                      memory/4364-186-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/4364-182-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/4364-183-0x000002B025260000-0x000002B025401000-memory.dmp

                                      memory/4364-189-0x000002B025260000-0x000002B025401000-memory.dmp

                                      memory/4364-188-0x00007FF61F5A0000-0x00007FF62124D000-memory.dmp

                                      memory/5220-423-0x000001928B420000-0x000001928B5C1000-memory.dmp

                                      memory/5436-425-0x0000026EB2A00000-0x0000026EB2BA1000-memory.dmp

                                      memory/6140-240-0x000002C87B600000-0x000002C87B7A1000-memory.dmp