Resubmissions

01/03/2024, 15:41

240301-s46jpahe82 10

20/02/2024, 02:32

240220-c1ct7sab38 10

Analysis

  • max time kernel
    120s
  • max time network
    124s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    20/02/2024, 02:32

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 1 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Modifies registry key 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 24 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:2856
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /C C:\Users\Admin\AppData\Local\Temp\tmp7A9C.tmp.bat & Del C:\Users\Admin\AppData\Local\Temp\tmp7A9C.tmp.bat
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:2608
      • C:\Windows\system32\tasklist.exe
        Tasklist /fi "PID eq 2856"
        3⤵
        • Enumerates processes with tasklist
        • Suspicious use of AdjustPrivilegeToken
        PID:2712
      • C:\Windows\system32\find.exe
        find ":"
        3⤵
          PID:2740
        • C:\Windows\system32\timeout.exe
          Timeout /T 1 /Nobreak
          3⤵
          • Delays execution with timeout.exe
          PID:2812
        • 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:2576
          • 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:624
            • 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:2756
          • C:\Windows\system32\WerFault.exe
            C:\Windows\system32\WerFault.exe -u -p 2576 -s 1684
            4⤵
              PID:2924

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

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

        Filesize

        796KB

        MD5

        2959ebe37a3d40d41476fed4c258dde6

        SHA1

        4559d9bb42dfa054cc6381e96d933460a39c73a7

        SHA256

        e09682ae21edbfa085934504cf4419694b7c62421bfba6dd81e3e2aa1834654b

        SHA512

        7d36d13a457b31c2d3269e156dcd04eab101f5b3a13bddc0d1de14e2e5deafb2fab33e5c44747bdd288ab539e8b556ecd35a664b77c97ec63f1b16f04aaf7d9d

      • C:\Users\Admin\AppData\Local\Temp\tmp7A9C.tmp.bat

        Filesize

        256B

        MD5

        31217e9d8b739714b69a1986fdb5778d

        SHA1

        bdb9a0c4447252dd4500981d2b4efdb47233c797

        SHA256

        d8b540f589ff06e332f5600fae9a94e71973431fbdfda0f16714c53a2547c2da

        SHA512

        6bb9ed74fd7fe861525820eea2812b2bd4aefdcee327f11b34d89bee522ff204fea9b5e412e4f4521ef784d9fb6d3f81af59628f5fb34122a5b9a10d0ff2e116

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

        Filesize

        1.1MB

        MD5

        6a7e7f806c5fe4031f78c8f6e8fc2d92

        SHA1

        78bc1ce44d339fcf462c7f9fb40d4a3aed552365

        SHA256

        23162740d91412bff0b4b511053883a075ea52d7cef41fb0a8a706e7844840f5

        SHA512

        76da29c1a5def53c88b27673231efd3547f183ec2058bd50c4247ddb9d868e0f9d8af1acf33b14b2d84350ea5a8170a1bf9eda83c776991788651c3ed6a1741e

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

        Filesize

        887KB

        MD5

        3191b83f79a52b3932c7cef34db4bbfe

        SHA1

        b1822ac52ba950a461febcacfdf79099263f0add

        SHA256

        55fe859530bafb7a8e4a51ca976d5554028fdfa4bc3a9a9878d0fc5f86fd38f0

        SHA512

        201b20bd14122a57f75af1ebd41bf434eeea4db47f2b7e1569c544427fe5328aa88f13da4f25473d46fb69da3fc6e18e3e480d3959ac5a9a63b8f4ac04e4368f

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

        Filesize

        823KB

        MD5

        39385867e29289c2fee670972268817e

        SHA1

        f8d28b44245be48ce1edf927466655814628111b

        SHA256

        facaf084975e59273abd098c09af497802115e77d9e18d70953423f9d9b2118f

        SHA512

        342a3c73743573b0648f8fad6a105a1e452b64196e3150252d346b95c31d67a61d910c29067b93e76124d3bdf3baae7b5eaab39030b027925b659b2ccda892bb

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

        Filesize

        1.2MB

        MD5

        bec9cba4193191e9f495c3f2801661bc

        SHA1

        88f952ac8e2f9971181f6e26395978df83dc7e47

        SHA256

        3bca9c9f50fc02445ef562a6d73f444385afd5a2b719f02bd742e6b9d2627d5a

        SHA512

        9c1321e57caa68525beed816589902179ccf3d7ba0fc7a3a7190a9c9fc7d7ead06a8d048c95d006fc0f8023050ba9fc4812b4970b32e65361365fd0ca5c424d6

      • memory/2576-14-0x000007FEF5110000-0x000007FEF5AFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2576-17-0x000000001B520000-0x000000001B5A0000-memory.dmp

        Filesize

        512KB

      • memory/2576-18-0x000007FEF5110000-0x000007FEF5AFC000-memory.dmp

        Filesize

        9.9MB

      • memory/2856-6-0x000000001B540000-0x000000001B5C0000-memory.dmp

        Filesize

        512KB

      • memory/2856-9-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

        Filesize

        9.9MB

      • memory/2856-0-0x0000000000F20000-0x00000000014C0000-memory.dmp

        Filesize

        5.6MB

      • memory/2856-1-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

        Filesize

        9.9MB