Analysis

  • max time kernel
    80s
  • max time network
    83s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20-12-2024 23:37

General

  • Target

    Windows Security Notification.exe

  • Size

    86KB

  • MD5

    434184cbd1ab6d8b3e6d04d69df75f4f

  • SHA1

    39788e96ff6c0a7f1e7e257715e64b696198151b

  • SHA256

    57ac4fcdd291af70d43b28025bbf95a4d4ac1d0955b075f159e97dcfe7685740

  • SHA512

    4dcd69e84e8b031d83953a9165745c6daba6538cfebf4e76cf6f7f3f92aef4d334013be15d2b20bd4d126994059e1c1d1733ab444954ff3cf26e99f912c01c2c

  • SSDEEP

    768:nMWKyi7didYfW/QdVXxRWl7H2+ZKJ7smhQpq/BRUT0fk9wGluB6SrDDv6/bB2Lj9:nMe2YVHYDCpwGAc9mokDDS/l2Lj9

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

policies-beside.gl.at.ply.gg:9967

Mutex

xhhCQtIByF

Attributes
  • certificate

    MIIE4DCCAsigAwIBAgIQAKQYOfZd86J2BfNjhG4CWTANBgkqhkiG9w0BAQ0FADARMQ8wDQYDVQQDDAZTaWx2ZXIwIBcNMjIwODI2MTkwMTA4WhgPOTk5OTEyMzEyMzU5NTlaMBExDzANBgNVBAMMBlNpbHZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAPbpOWfhZTuOfEaqqImTTe5dNHAAry7/mf00DCoI4lPZfypsc1tYraxSPFeayGu09a3qdhkWKSVIgwnu2n4GLQNOCY9fh/1oyrX4Iir3BIkYeU7pKTWgjhUlAmFAUAaNr0ca23Ku2kN79jrDzRznOgE2DEW4p7OiM4Mb097ma9lzu7MyssHbY4VCteAhj9HZiplqBxaC1vXDmzxqG+gUZ1aLcyG7ssdkOjtWVBgT3gD/gOl7KchRzCFB1egDC/vD9WZCG35U3Ngi+IkTznoXR1R06cq4v0UnGjE37R2vcB21qb0ZYNiZJXZHv5i9+R7xoPeNoLda5PqnfGGbhPvNEdD56mdcOKlzGIuyemLkUo8texdpiBWKbtc3JZf5VsKxjJtHDK3xW6gDGI+PAirzGkFPmwcf8WgsblvzLg8OZpVxVs8rmKWoi6qIrf4CXnyl73J4lgzW+ir7PjANAQXwLNGdNnvdMeLeo/muGQPdeNpr6OczGGnkWA4qniHeL51/Gx0a8A+jP9zKiyu+qHcsP2IotgWDH/KlzJVr7IAum+DV92uV8poTDcUNcHaKvhHA65KmEtsvLbK6lFZcAMC0eWC0VgpW44T1/16rOaaky5mP6rTMc3nSyOl/lU/XgAgGGQPe22bRLWYzd3WVeEpI1WnHYXS+tL9IOe4kJP+pYsWDAgMBAAGjMjAwMB0GA1UdDgQWBBR32TJj2LeUx9L+RcSOvmFV6VJq6TAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBDQUAA4ICAQA+qucSOi7ov7Q1FmAjMf925KuvKuCNwJiu3Sqo3FDGVAD1fAwAi2FdyuXEO2VIUPZCkalFcBna5rqyrc6tcS4T0IL2TsYLrsuGir7PWP7CAcft1urYS1HpNpHxeH/nixwnQaQs/MuRmdm2TeCj6G21P5BTW55U5y9sMPSYwhbD2N7XLgnSQd5Y+80TR7FUiye/k3D37fI9PRhSQGbfYFRQQTmxj84dPTnY5CVgaY9d8fNiFZkyjaZdf+mibK0xQTf+xLVVj+toDNCkc1F462TdmFhCrHd4PoMo0yLDNv4SC6NLRq4haWDRtORw6gd5GYIoCQ3m3oQvNlNxXhhIjsOyxkxOrkCD0c+57PIc7EmKXieJa/XxnkcIVxO8dvTY/vijuz/VaZYl/lPu9ckuqgJ1wRvvsHl70Trv4Mn4X5uCIqRFFlK/mSOZbLIguGkDN3QIZABvej89vlZMhrVfZOG2oawe23FskHjv7thF/WzOXtWw6RUVC1V+hCwbuxFNUjZmmOTUwdXHnus7I2AuiG6Jz1+y9aYiXBcVTdSljxjHRRmiRaAnY94h58vN8NJ4hKL2GVCo6LxkpuplmcntJN0cKraKTPxSXcCRrqWxX9qoIbfvBcUU4vH1jPJCCLNCuDyD3lgQkpPVvq0EMU1a2HFGgMEQMjpYpb38rcadDhT5ag==

  • decrypted_key

    -|S.S.S|-

  • discord

    https://discord.com/api/webhooks/1307565056380108840/pkpOqO-Y8vruO8aeIu53yzS3l1IFMwpDSYDrGkNa1byaHAiKSa4-gLYX_DpLfjxLj0q9

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    RFNmZ1JPaXBaQXBxS05BdUdsQWNWU0VHREZSbmRK

  • payload_url

    https://g.top4top.io/p_2522c7w8u1.png

  • reconnect_delay

    4

  • server_signature

    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

Signatures

  • SilverRat

    SilverRat is trojan written in C#.

  • Silverrat family
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks SCSI registry key(s) 3 TTPs 6 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 48 IoCs
  • Suspicious use of AdjustPrivilegeToken 12 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 16 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.

  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Windows Security Notification.exe
    "C:\Users\Admin\AppData\Local\Temp\Windows Security Notification.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3640
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\Windows Security Notification"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:1980
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\Windows Security Notification\$77Windows Security Notification.exe"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:1168
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEC06.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:636
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:1560
      • C:\Users\Admin\Windows Security Notification\$77Windows Security Notification.exe
        "C:\Users\Admin\Windows Security Notification\$77Windows Security Notification.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:4444
        • C:\Windows\SYSTEM32\schtasks.exe
          "schtasks.exe" /query /TN $77Windows Security Notification.exe
          4⤵
            PID:3368
          • C:\Windows\SYSTEM32\schtasks.exe
            "schtasks.exe" /Create /SC ONCE /TN "$77Windows Security Notification.exe" /TR "C:\Users\Admin\Windows Security Notification\$77Windows Security Notification.exe \"\$77Windows Security Notification.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2504
          • C:\Windows\SYSTEM32\schtasks.exe
            "schtasks.exe" /query /TN $77Windows Security Notification.exe
            4⤵
              PID:2884
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:3840
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Checks SCSI registry key(s)
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1364

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.idx

        Filesize

        64KB

        MD5

        d2fb266b97caff2086bf0fa74eddb6b2

        SHA1

        2f0061ce9c51b5b4fbab76b37fc6a540be7f805d

        SHA256

        b09f68b61d9ff5a7c7c8b10eee9447d4813ee0e866346e629e788cd4adecb66a

        SHA512

        c3ba95a538c1d266beb83334af755c34ce642a4178ab0f2e5f7822fd6821d3b68862a8b58f167a9294e6d913b08c1054a69b5d7aec2efdb3cf9796ed84de21a8

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.lock

        Filesize

        4B

        MD5

        f49655f856acb8884cc0ace29216f511

        SHA1

        cb0f1f87ec0455ec349aaa950c600475ac7b7b6b

        SHA256

        7852fce59c67ddf1d6b8b997eaa1adfac004a9f3a91c37295de9223674011fba

        SHA512

        599e93d25b174524495ed29653052b3590133096404873318f05fd68f4c9a5c9a3b30574551141fbb73d7329d6be342699a17f3ae84554bab784776dfda2d5f8

      • C:\Users\Admin\AppData\Local\D3DSCache\e8010882af4f153f\F4EB2D6C-ED2B-4BDD-AD9D-F913287E6768.val

        Filesize

        944B

        MD5

        6bd369f7c74a28194c991ed1404da30f

        SHA1

        0f8e3f8ab822c9374409fe399b6bfe5d68cbd643

        SHA256

        878947d0ec814fe7c343cdebc05eebf00eb14f3023bdb3809a559e17f399fe5d

        SHA512

        8fc5f073dc9fa1e1ae47c60a5f06e0a48709fd6a4302dffaa721858409e7bde64bc6856d3fb28891090516d1a7afc542579de287778b5755eafe75cc67d45d93

      • C:\Users\Admin\AppData\Local\Temp\tmpEC06.tmp.bat

        Filesize

        190B

        MD5

        3a6a190252266190999a5ccf41a90c21

        SHA1

        129186a5474874440c2da34ccc728e94dcbd175f

        SHA256

        be989fe6c86a00f2577b63821759b9c28bf4912427faaf7fc767db061141d171

        SHA512

        3a7a4e77b4ca6756d79f1317970d4fbccd4f447f9272c3f85ab46c53d763ebb5df1dcbc3ea6f7ccf66a6708f85547a5759c476d34f2364948be2cd0511a23b89

      • C:\Users\Admin\Windows Security Notification\$77Windows Security Notification.exe

        Filesize

        86KB

        MD5

        434184cbd1ab6d8b3e6d04d69df75f4f

        SHA1

        39788e96ff6c0a7f1e7e257715e64b696198151b

        SHA256

        57ac4fcdd291af70d43b28025bbf95a4d4ac1d0955b075f159e97dcfe7685740

        SHA512

        4dcd69e84e8b031d83953a9165745c6daba6538cfebf4e76cf6f7f3f92aef4d334013be15d2b20bd4d126994059e1c1d1733ab444954ff3cf26e99f912c01c2c

      • memory/1364-34-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-27-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-35-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-36-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-37-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-38-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-39-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-29-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/1364-28-0x0000028ACAA20000-0x0000028ACAA21000-memory.dmp

        Filesize

        4KB

      • memory/3640-0-0x00007FFE58A43000-0x00007FFE58A45000-memory.dmp

        Filesize

        8KB

      • memory/3640-3-0x00007FFE58A43000-0x00007FFE58A45000-memory.dmp

        Filesize

        8KB

      • memory/3640-1-0x0000000000AB0000-0x0000000000ACA000-memory.dmp

        Filesize

        104KB

      • memory/3640-4-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

        Filesize

        10.8MB

      • memory/3640-2-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

        Filesize

        10.8MB

      • memory/3640-22-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

        Filesize

        10.8MB

      • memory/3840-13-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-14-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-11-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-5-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-6-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-15-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-16-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-17-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-12-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/3840-7-0x0000025D46380000-0x0000025D46381000-memory.dmp

        Filesize

        4KB

      • memory/4444-43-0x000000001C8C0000-0x000000001C8D0000-memory.dmp

        Filesize

        64KB

      • memory/4444-44-0x000000001C8D0000-0x000000001C8F0000-memory.dmp

        Filesize

        128KB