Analysis

  • max time kernel
    64s
  • max time network
    131s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230703-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
  • submitted
    04/07/2023, 15:54

General

  • Target

    svchostexe.exe

  • Size

    7.1MB

  • MD5

    716c1920c48cf67eb21212edea8ba36d

  • SHA1

    9427c93730422107832f42c1c7f34a1dd21dadb8

  • SHA256

    1a5ef68208365f3575fb08d6fba84b3a8a6564cec61db97279a8574522defe7c

  • SHA512

    5374086c6cb5171e42399077fbb37160be3f879c1d706f5fd9882272555d83aacf788d3b5e354f8c2c4b5209b42b7cedf1cc8bfa93182e257e915cd82b230746

  • SSDEEP

    196608:hDcUG4raKu24YY7HVT4hV0AD6QgqKRgX:HmKr4YYH+EUWpgX

Malware Config

Signatures

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • Themida packer 5 IoCs

    Detects Themida, an advanced Windows software protection system.

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Program crash 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\svchostexe.exe
    "C:\Users\Admin\AppData\Local\Temp\svchostexe.exe"
    1⤵
    • Identifies VirtualBox via ACPI registry values (likely anti-VM)
    • Checks BIOS information in registry
    • Loads dropped DLL
    • Checks whether UAC is enabled
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    PID:3876
    • C:\Windows\system32\WerFault.exe
      C:\Windows\system32\WerFault.exe -u -p 3876 -s 1520
      2⤵
      • Program crash
      PID:4084
  • C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -pss -s 408 -p 3876 -ip 3876
    1⤵
      PID:3668

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          • C:\Users\Admin\AppData\Local\Temp\99096b4b-3055-4c6a-a348-9f002740163e\AgileDotNetRT64.dll

            Filesize

            4.2MB

            MD5

            05b012457488a95a05d0541e0470d392

            SHA1

            74f541d6a8365508c794ef7b4ac7c297457f9ce3

            SHA256

            1f77a0749ac730500f203b8c4d072587923ac679e184a3859aeb855c2a2e7d8d

            SHA512

            6d6e7b838d4425d49ac8d3738135374ef5357f0677b07cecb7afbf5feddc1997bf6dce68d48787eff8a74c4728def8880c8f01842eda35b5815fb561fa401ae6

          • C:\Users\Admin\AppData\Local\Temp\99096b4b-3055-4c6a-a348-9f002740163e\AgileDotNetRT64.dll

            Filesize

            4.2MB

            MD5

            05b012457488a95a05d0541e0470d392

            SHA1

            74f541d6a8365508c794ef7b4ac7c297457f9ce3

            SHA256

            1f77a0749ac730500f203b8c4d072587923ac679e184a3859aeb855c2a2e7d8d

            SHA512

            6d6e7b838d4425d49ac8d3738135374ef5357f0677b07cecb7afbf5feddc1997bf6dce68d48787eff8a74c4728def8880c8f01842eda35b5815fb561fa401ae6

          • memory/3876-133-0x0000000000F10000-0x000000000162E000-memory.dmp

            Filesize

            7.1MB

          • memory/3876-140-0x000000001C2D0000-0x000000001C2E0000-memory.dmp

            Filesize

            64KB

          • memory/3876-141-0x00007FFA2DF70000-0x00007FFA2EAF4000-memory.dmp

            Filesize

            11.5MB

          • memory/3876-143-0x00007FFA2DF70000-0x00007FFA2EAF4000-memory.dmp

            Filesize

            11.5MB

          • memory/3876-146-0x00007FFA40430000-0x00007FFA4057E000-memory.dmp

            Filesize

            1.3MB

          • memory/3876-147-0x00007FFA2DF70000-0x00007FFA2EAF4000-memory.dmp

            Filesize

            11.5MB