Overview

overview

10

Static

static

10

d689489649...66b291

ubuntu-20.04-amd64

10

Analysis

  • max time kernel
    2s
  • max time network
    133s
  • platform
    ubuntu-20.04_amd64
  • resource
    ubuntu2004-amd64-20240221-en
  • resource tags

    arch:amd64arch:i386image:ubuntu2004-amd64-20240221-enkernel:5.4.0-169-genericlocale:en-usos:ubuntu-20.04-amd64system
  • submitted
    10-04-2024 14:23

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General

  • Target

    d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291

  • Size

    27KB

  • MD5

    acea44892fc67223f43f4af2ec81aa83

  • SHA1

    f79255a73611bca2e1ff159eb8be6b0aa68c2748

  • SHA256

    d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291

  • SHA512

    8291808ba9f796bf37c637a252897dda69d29c5087a277cbb4c5d4821d8953d9ebc05d5a3088a33d380ae55538d4c802cd73de5d3ee34b67ebcd236997698393

  • SSDEEP

    768:sMUDrIR0pRIrPP6JxdSbDRSDIh7Lz0iFCDq4p:QrY0LQH+DS90iFCDp

Score
10/10
bpfdoorbackdoor

Malware Config

Signatures

  • BPFDoor

    BPFDoor is an evasive Linux backdoor attributed to a Chinese threat actor called Red Menshen.

    backdoorbpfdoor
  • BPFDoor payload 1 IoCs
  • Changes its process name 1 IoCs
  • Creates Raw socket 1 IoCs

    Creates a socket that captures raw packets at the device level

  • Executes dropped EXE 1 IoCs
  • Reads runtime system information 1 IoCs

    Reads data from /proc virtual filesystem.

  • Writes file to shm directory 1 IoCs

    Malware can drop malicious files in the shm directory which will run directly from RAM.

Processes

  • /tmp/d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291
    /tmp/d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291
    1⤵
      PID:1476
      • /bin/sh
        sh -c "/bin/rm -f /dev/shm/kdmtmpflush;/bin/cp /tmp/d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291 /dev/shm/kdmtmpflush && /bin/chmod 755 /dev/shm/kdmtmpflush && /dev/shm/kdmtmpflush --init && /bin/rm -f /dev/shm/kdmtmpflush"
        2⤵
          PID:1477
          • /bin/rm
            /bin/rm -f /dev/shm/kdmtmpflush
            3⤵
              PID:1480
            • /bin/cp
              /bin/cp /tmp/d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291 /dev/shm/kdmtmpflush
              3⤵
              • Reads runtime system information
              • Writes file to shm directory
              PID:1482
            • /bin/chmod
              /bin/chmod 755 /dev/shm/kdmtmpflush
              3⤵
                PID:1484
              • /dev/shm/kdmtmpflush
                /dev/shm/kdmtmpflush --init
                3⤵
                • Changes its process name
                • Executes dropped EXE
                PID:1485
              • /bin/rm
                /bin/rm -f /dev/shm/kdmtmpflush
                3⤵
                  PID:1487

            Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            • /dev/shm/kdmtmpflush
              Filesize

              27KB

              MD5

              acea44892fc67223f43f4af2ec81aa83

              SHA1

              f79255a73611bca2e1ff159eb8be6b0aa68c2748

              SHA256

              d68948964905af7259bca015bd1d1ab0bb54334a6f08a87a40ed9d8cc966b291

              SHA512

              8291808ba9f796bf37c637a252897dda69d29c5087a277cbb4c5d4821d8953d9ebc05d5a3088a33d380ae55538d4c802cd73de5d3ee34b67ebcd236997698393

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