Analysis

  • max time kernel
    148s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    30-07-2024 17:26

General

  • Target

    Comprobante.exe

  • Size

    367KB

  • MD5

    3b28af41d6afa46a8e9b5707e3bfb8f7

  • SHA1

    421755f9c95e2c7140241859983ad8665cf67b41

  • SHA256

    f81185426901a3519e4d8d030d677ecf8a50d873fecfdd3980ef3ccfac785707

  • SHA512

    ddd508da739baacbd05c63b86dc0df4b6b74b416a332e967e8cddf16f1fec5b28ee2cf2a0c82b4ddc7e3fb11040bc15d13330cf73cfce9020cba4d605ceb1729

  • SSDEEP

    6144:H0ths4dDpxQCc6nxbx5S9l2VFqNK8xpDSznNkBJn64nJl0lvzewww0JwwgSnvYq:HKs45p2sxKP2VSKIoznSv64nJl0lvz3t

Malware Config

Extracted

Family

xenorat

C2

45.66.231.63

Mutex

Tolid_rat_nd8889j

Attributes
  • delay

    40000

  • install_path

    temp

  • port

    1353

  • startup_name

    vplayer

Signatures

  • XenorRat

    XenorRat is a remote access trojan written in C#.

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 4 IoCs
  • Suspicious use of SetThreadContext 6 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • 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 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 54 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
    "C:\Users\Admin\AppData\Local\Temp\Comprobante.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4592
    • C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
      C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
      2⤵
        PID:3284
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3284 -s 80
          3⤵
          • Program crash
          PID:1476
      • C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
        C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:216
        • C:\Windows\SysWOW64\schtasks.exe
          "schtasks.exe" /Create /TN "vplayer" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2F0A.tmp" /F
          3⤵
          • System Location Discovery: System Language Discovery
          • Scheduled Task/Job: Scheduled Task
          PID:3844
      • C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
        C:\Users\Admin\AppData\Local\Temp\Comprobante.exe
        2⤵
        • Checks computer location settings
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:348
        • C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
          "C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe"
          3⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1424
          • C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:2084
          • C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:768
          • C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe
            4⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            PID:3020
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3284 -ip 3284
      1⤵
        PID:4136

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Comprobante.exe.log

        Filesize

        522B

        MD5

        8334a471a4b492ece225b471b8ad2fc8

        SHA1

        1cb24640f32d23e8f7800bd0511b7b9c3011d992

        SHA256

        5612afe347d8549cc95a0c710602bcc7d7b224361b613c0a6ba362092300c169

        SHA512

        56ae2e83355c331b00d782797f5664c2f373eac240e811aab978732503ae05eb20b08730d2427ed90efa5a706d71b42b57153596a45a6b5592e3dd9128b81c36

      • C:\Users\Admin\AppData\Local\Temp\XenoManager\Comprobante.exe

        Filesize

        367KB

        MD5

        3b28af41d6afa46a8e9b5707e3bfb8f7

        SHA1

        421755f9c95e2c7140241859983ad8665cf67b41

        SHA256

        f81185426901a3519e4d8d030d677ecf8a50d873fecfdd3980ef3ccfac785707

        SHA512

        ddd508da739baacbd05c63b86dc0df4b6b74b416a332e967e8cddf16f1fec5b28ee2cf2a0c82b4ddc7e3fb11040bc15d13330cf73cfce9020cba4d605ceb1729

      • C:\Users\Admin\AppData\Local\Temp\tmp2F0A.tmp

        Filesize

        1KB

        MD5

        8bebc590162576dee61b15d4b1a8e92f

        SHA1

        9c6e52f7a46d097a842837a8ea6ba21027f42535

        SHA256

        4c5a48fd2b642faeef01fad4ff1ef01e8e4c63c6d87997a04e46489b3dbb466c

        SHA512

        64a143fe89a53bc349f6624c169231a7673bd7798abf74b30fdc89ebd0f4b95859173e06b18a402ad72eea5ca2f6408c396f0be4a60b0dfc15f32cbd4fe6ec6a

      • memory/216-16-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/216-39-0x0000000005780000-0x00000000057E6000-memory.dmp

        Filesize

        408KB

      • memory/216-36-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/216-15-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/216-8-0x0000000000400000-0x0000000000412000-memory.dmp

        Filesize

        72KB

      • memory/348-13-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/348-28-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/1424-35-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/1424-27-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/4592-14-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/4592-3-0x0000000074C80000-0x0000000075430000-memory.dmp

        Filesize

        7.7MB

      • memory/4592-4-0x0000000004E40000-0x0000000004E98000-memory.dmp

        Filesize

        352KB

      • memory/4592-0-0x0000000074C8E000-0x0000000074C8F000-memory.dmp

        Filesize

        4KB

      • memory/4592-6-0x0000000004860000-0x0000000004866000-memory.dmp

        Filesize

        24KB

      • memory/4592-5-0x000000000D9C0000-0x000000000DA5C000-memory.dmp

        Filesize

        624KB

      • memory/4592-2-0x0000000000E40000-0x0000000000E46000-memory.dmp

        Filesize

        24KB

      • memory/4592-1-0x0000000000430000-0x0000000000494000-memory.dmp

        Filesize

        400KB