Resubmissions

05-12-2024 13:28

241205-qqtxmawpaw 10

Analysis

  • max time kernel
    82s
  • max time network
    80s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    05-12-2024 13:28

General

  • Target

    SilverRat.exe

  • Size

    45KB

  • MD5

    545d64cc91e4da6339a70d54a2443c5d

  • SHA1

    f03344ab824c7cf0f73dcc86aa34cab36e2e54e7

  • SHA256

    04109cb3426408945bea79e8e355285fb5bf93224b5b2775a5f6ff6c1e992b5f

  • SHA512

    733154a7f76840fad3ead2af149cf708807878ef3f08c62232ee3cdc0b7e6a4b4dc338103569daf9f755a6549475df15b34b7f223929348001d4086e83371681

  • SSDEEP

    768:OarX4D9pmZGOXnXhEk75rVeZtxbuRULQj9SEQf9B6SbuDFvr1/xf:OarID9pVU5rVe3xCGsj9O9oQ2Fx/xf

Malware Config

Extracted

Family

silverrat

Version

1.0.0.0

C2

auto-london.gl.at.ply.gg:51655

Mutex

SilverMutex_kTAAZjMenK

Attributes
  • certificate

    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

  • decrypted_key

    -|S.S.S|-

  • discord

    https://discord.com/api/webhooks/1253749007772160090/mxExcAUGlJgTCbYOk_u7JJAnNpsIhMne5e0PjqkRY2MV_40Bgpix2Ezib84aFxRmN66j

  • key

    yy6zDjAUmbB09pKvo5Hhug==

  • key_x509

    QnZ2VW1rTFlUa09ESXhCRkdHYURSSlBBdk5SQk5J

  • payload_url

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

  • reconnect_delay

    0

  • 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.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 3 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Using powershell.exe command.

  • 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).

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 33 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 7 IoCs
  • Suspicious use of FindShellTrayWindow 64 IoCs
  • Suspicious use of SendNotifyMessage 63 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 30 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.

  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SilverRat.exe
    "C:\Users\Admin\AppData\Local\Temp\SilverRat.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2400
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:3068
    • C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +s +h "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe"
      2⤵
      • Sets file to hidden
      • Views/modifies file attributes
      PID:1528
    • C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp673B.tmp.bat""
      2⤵
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1808
      • C:\Windows\system32\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2124
      • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe
        "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:280
        • C:\Windows\system32\schtasks.exe
          "schtasks.exe" /query /TN $77Runtime Broker.exe
          4⤵
            PID:2252
          • C:\Windows\system32\schtasks.exe
            "schtasks.exe" /Create /SC ONCE /TN "$77Runtime Broker.exe" /TR "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe \"\$77Runtime Broker.exe\" /AsAdmin" /ST 00:01 /IT /F /RL HIGHEST
            4⤵
            • Scheduled Task/Job: Scheduled Task
            PID:2248
          • C:\Windows\system32\schtasks.exe
            "schtasks.exe" /query /TN $77Runtime Broker.exe
            4⤵
              PID:2976
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Set-MpPreference -ExclusionExtension exe,bat,dll,ps1;exit
              4⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1968
            • C:\Windows\System32\schtasks.exe
              "C:\Windows\System32\schtasks.exe" /create /sc hourly /mo 1 /tn "Runtime Broker_Task-HOURLY-01" /tr "%MyFile%" /st 00:00
              4⤵
              • Scheduled Task/Job: Scheduled Task
              PID:592
      • C:\Windows\system32\vssvc.exe
        C:\Windows\system32\vssvc.exe
        1⤵
        • Suspicious use of AdjustPrivilegeToken
        PID:2704
      • C:\Program Files\VideoLAN\VLC\vlc.exe
        "C:\Program Files\VideoLAN\VLC\vlc.exe" --started-from-file "C:\Users\Admin\Desktop\WatchSwitch.M2V"
        1⤵
        • Suspicious behavior: AddClipboardFormatListener
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of SetWindowsHookEx
        PID:1776
      • C:\Windows\system32\taskmgr.exe
        "C:\Windows\system32\taskmgr.exe" /4
        1⤵
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        PID:1284

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\tmp673B.tmp.bat

        Filesize

        196B

        MD5

        7f248e0f1021cdbaebd8ff59e965a96d

        SHA1

        91bfc678d529a06ec3d8fb43abb598cae6c55904

        SHA256

        7a6b13005f69e91089d82eed665a3135c0b869c4e79d950364917fd8abfc8c68

        SHA512

        05372ebb28b40aa38c62bb6e347c6a917d00894bf460508b0ba045d7fbc095fdb95d6372d2975bd3fbffe6bb05c86879e1caa66a486ab8a80bfaa774155871c8

      • \Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\hgfdfd\$77Runtime Broker.exe

        Filesize

        45KB

        MD5

        545d64cc91e4da6339a70d54a2443c5d

        SHA1

        f03344ab824c7cf0f73dcc86aa34cab36e2e54e7

        SHA256

        04109cb3426408945bea79e8e355285fb5bf93224b5b2775a5f6ff6c1e992b5f

        SHA512

        733154a7f76840fad3ead2af149cf708807878ef3f08c62232ee3cdc0b7e6a4b4dc338103569daf9f755a6549475df15b34b7f223929348001d4086e83371681

      • memory/280-24-0x000000013FBE0000-0x000000013FBF0000-memory.dmp

        Filesize

        64KB

      • memory/1284-48-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/1284-47-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/1284-45-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/1284-44-0x0000000140000000-0x00000001405E8000-memory.dmp

        Filesize

        5.9MB

      • memory/1776-38-0x000000013FFF0000-0x00000001400E8000-memory.dmp

        Filesize

        992KB

      • memory/1776-39-0x000007FEF71D0000-0x000007FEF7204000-memory.dmp

        Filesize

        208KB

      • memory/1776-40-0x000007FEF5800000-0x000007FEF5AB6000-memory.dmp

        Filesize

        2.7MB

      • memory/1776-41-0x000007FEF4660000-0x000007FEF5710000-memory.dmp

        Filesize

        16.7MB

      • memory/1968-29-0x000000001B720000-0x000000001BA02000-memory.dmp

        Filesize

        2.9MB

      • memory/1968-30-0x0000000001EF0000-0x0000000001EF8000-memory.dmp

        Filesize

        32KB

      • memory/2400-14-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

        Filesize

        9.9MB

      • memory/2400-0-0x000007FEF50D3000-0x000007FEF50D4000-memory.dmp

        Filesize

        4KB

      • memory/2400-4-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

        Filesize

        9.9MB

      • memory/2400-3-0x000007FEF50D3000-0x000007FEF50D4000-memory.dmp

        Filesize

        4KB

      • memory/2400-2-0x000007FEF50D0000-0x000007FEF5ABC000-memory.dmp

        Filesize

        9.9MB

      • memory/2400-1-0x000000013F0D0000-0x000000013F0E0000-memory.dmp

        Filesize

        64KB