Resubmissions

01/03/2024, 15:41

240301-s46jpahe82 10

20/02/2024, 02:32

240220-c1ct7sab38 10

Analysis

  • max time kernel
    59s
  • max time network
    60s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240221-en
  • resource tags

    arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    01/03/2024, 15:41

General

  • Target

    db874ae685d2bc4235b1213ec9d43d327c8d2bd12300bb0d78c9ce0a84c828b2.exe

  • Size

    5.6MB

  • MD5

    731812403191b60503e017d88e23b1a3

  • SHA1

    67e1c24ded75620181916dea9654eeddf4049525

  • SHA256

    db874ae685d2bc4235b1213ec9d43d327c8d2bd12300bb0d78c9ce0a84c828b2

  • SHA512

    1ae78e7d5e134d56ebbe9ec3e71bd7529aedbe5670a93b7728eca0aa482ac6688187884c5a61c2c8ef308acda555152d4d5cd2938d1cfa57303a8649803f01d5

  • SSDEEP

    98304:nsl27OuKr+gvhf2U9Nzm31PMoslkqXf0FvUcwti78OqJ7TPBvc8X6UcR6m:nPOuK6mn9NzgMoYkSIvUcwti7TQlvciK

Malware Config

Signatures

  • MilleniumRat

    MilleniumRat is a remote access trojan written in C#.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 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.

  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 2 IoCs
  • Enumerates processes with tasklist 1 TTPs 2 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\db874ae685d2bc4235b1213ec9d43d327c8d2bd12300bb0d78c9ce0a84c828b2.exe
    "C:\Users\Admin\AppData\Local\Temp\db874ae685d2bc4235b1213ec9d43d327c8d2bd12300bb0d78c9ce0a84c828b2.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3516
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp6820.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp6820.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4108
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 3516"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2464
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:1784
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:1384
        • C:\Windows\system32\tasklist.exe
          Tasklist /fi "PID eq 3516"
          3⤵
          • Enumerates processes with tasklist
          • Suspicious use of AdjustPrivilegeToken
          PID:3208
        • C:\Windows\system32\find.exe
          find ":"
          3⤵
            PID:4568
          • C:\Windows\system32\timeout.exe
            Timeout /T 1 /Nobreak
            3⤵
            • Delays execution with timeout.exe
            PID:1792
          • C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe
            "C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:3820
            • C:\Windows\System32\cmd.exe
              "C:\Windows\System32\cmd.exe" /c reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe /f
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:1920
              • C:\Windows\system32\reg.exe
                reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Run /v ChromeUpdate /t REG_SZ /d C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe /f
                5⤵
                • Adds Run key to start application
                • Modifies registry key
                PID:4760

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Costura\A54E036D2DCD19384E8EA53862E0DD8F\64\sqlite.interop.dll

        Filesize

        1.7MB

        MD5

        65ccd6ecb99899083d43f7c24eb8f869

        SHA1

        27037a9470cc5ed177c0b6688495f3a51996a023

        SHA256

        aba67c7e6c01856838b8bc6b0ba95e864e1fdcb3750aa7cdc1bc73511cea6fe4

        SHA512

        533900861fe36cf78b614d6a7ce741ff1172b41cbd5644b4a9542e6ca42702e6fbfb12f0fbaae8f5992320870a15e90b4f7bf180705fc9839db433413860be6d

      • C:\Users\Admin\AppData\Local\Temp\tmp6820.tmp.bat

        Filesize

        256B

        MD5

        ae8e57039b10aa484a50ec339cbcb8b4

        SHA1

        89861092d74103e8d59e8836697825c307b901eb

        SHA256

        0368ac62fcbb45adae1b2816c718574915da87ad0ed665ee9a86ab16c41c6c0d

        SHA512

        94360d2299d68bd78557ae85cbf690865d552c1eb498047be23f3a6c028f4ef81ff691b55ffd3415782af4bb31feca40dfb9ebcd8c99b56d65a95d7c491d75c5

      • C:\Users\Admin\AppData\Roaming\GoogleChromeUpdateLog\Update.exe

        Filesize

        5.6MB

        MD5

        731812403191b60503e017d88e23b1a3

        SHA1

        67e1c24ded75620181916dea9654eeddf4049525

        SHA256

        db874ae685d2bc4235b1213ec9d43d327c8d2bd12300bb0d78c9ce0a84c828b2

        SHA512

        1ae78e7d5e134d56ebbe9ec3e71bd7529aedbe5670a93b7728eca0aa482ac6688187884c5a61c2c8ef308acda555152d4d5cd2938d1cfa57303a8649803f01d5

      • memory/3516-6-0x000002BD757D0000-0x000002BD75846000-memory.dmp

        Filesize

        472KB

      • memory/3516-7-0x000002BD736F0000-0x000002BD73700000-memory.dmp

        Filesize

        64KB

      • memory/3516-8-0x000002BD73700000-0x000002BD7371E000-memory.dmp

        Filesize

        120KB

      • memory/3516-1-0x000002BD72C80000-0x000002BD73220000-memory.dmp

        Filesize

        5.6MB

      • memory/3516-13-0x00007FFFEB3C0000-0x00007FFFEBE82000-memory.dmp

        Filesize

        10.8MB

      • memory/3516-0-0x00007FFFEB3C0000-0x00007FFFEBE82000-memory.dmp

        Filesize

        10.8MB

      • memory/3820-17-0x00007FFFEB3C0000-0x00007FFFEBE82000-memory.dmp

        Filesize

        10.8MB

      • memory/3820-20-0x000001CE70EA0000-0x000001CE70EB0000-memory.dmp

        Filesize

        64KB

      • memory/3820-21-0x00007FFFEB3C0000-0x00007FFFEBE82000-memory.dmp

        Filesize

        10.8MB

      • memory/3820-22-0x000001CE70EA0000-0x000001CE70EB0000-memory.dmp

        Filesize

        64KB