Analysis

  • max time kernel
    149s
  • max time network
    7s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260126-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260126-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    05/05/2026, 04:29

General

  • Target
    Class of '09/lib/py2-linux-x86_64/Class_Of_09
  • Size 14KB
  • Sample260505-e4ppaagv3t
  • SHA256 d934148d84b35fb456bf09a8c21e7a866c40cbf5d32a77f29e16235c9541d450
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
4/10

Malware Config

Signatures

  • Changes its process name 2 IoCs
  • Checks CPU configuration 1 TTPs 1 IoCs

    Checks CPU information which indicate if the system is a virtual machine.

  • Reads CPU attributes 1 TTPs 1 IoCs
  • Enumerates kernel/hardware configuration 1 TTPs 30 IoCs

    Reads contents of /sys virtual filesystem to enumerate system information.

  • Reads runtime system information 9 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to tmp directory 64 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/Class of '09/lib/py2-linux-x86_64/Class_Of_09
    "/tmp/Class of '09/lib/py2-linux-x86_64/Class_Of_09"
    1⤵
    • Changes its process name
    • Checks CPU configuration
    • Reads CPU attributes
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    • Writes file to tmp directory
    PID:1497
    • /bin/sh
      sh -c "uname -p 2> /dev/null"
      2⤵
        PID:1498
        • /bin/uname
          uname -p
          3⤵
            PID:1499
        • /usr/bin/dbus-launch
          dbus-launch --autolaunch 11c67417355f45d397f6be11f62e85a6 --binary-syntax --close-stderr
          2⤵
            PID:1506
            • /usr/bin/dbus-daemon
              /usr/bin/dbus-daemon --syslog-only --fork --print-pid 5 --print-address 7 --session
              3⤵
              • Enumerates kernel/hardware configuration
              • Reads runtime system information
              PID:1508

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              text.txt

              • Path /root/.renpy/Class_Of_09-1594772489/text.txt
              • Size 5B
              • SHA256 314ad142957febe390cc7223b4deb1d1b21c187f84f6e7257a23fe46c27fcae3
              • MD5 SHA1 SHA512

              CEndHU

              • Path /tmp/CEndHU
              • Size 4B
              • SHA256 f02285fb90ed8c81531fe78cf4e2abb68a62be73ee7d317623e2c3e3aefdfff2
              • MD5 SHA1 SHA512

              GZZ5Fn

              • Path /tmp/GZZ5Fn
              • Size 4KB
              • SHA256 b19c0fada10195aac191b8ea7207f35ab662fb2f3e6c69899fb5b3505d450238
              • MD5 SHA1 SHA512 TLSH