Overview

overview

9

Static

static

5

superior.arm4

debian-12-armhf

9

Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    debian-12_armhf
  • resource
    debian12-armhf-20260513-en
  • resource tags

    arch:armhfimage:debian12-armhf-20260513-enkernel:6.1.0-17-armmp-lpaelocale:en-usos:debian-12-armhfsystem
  • submitted
    24/10/2026, 04:25

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General

  • Target
    superior.arm4
  • Size 623KB
  • Sample261024-e2dt1aec37
  • SHA256 e73de60f8d372c305cc388ae2e8636ea8467b1f9f563ca140ec409ffc77df163
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
antivmcredential_accessdefense_evasiondiscoveryexecutionpersistenceprivilege_escalationupx

Malware Config

Signatures

  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

    discovery
  • Deletes Audit logs 1 TTPs 1 IoCs

    Deletes logs related to the Linux Audit framework.

    defense_evasion
  • Traces itself 1 IoCs

    Traces itself to prevent debugging attempts

  • Checks hardware identifiers (DMI) 1 TTPs 1 IoCs

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

    antivm
  • Creates/modifies Cron job 1 TTPs 1 IoCs

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

    executionpersistenceprivilege_escalation
  • Deletes log files 1 TTPs 5 IoCs

    Deletes log files on the system.

    defense_evasion
  • 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

  • Looks up external IP address via web service 1 TTPs 1 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

    discovery
  • Reads MAC address of network interface 2 TTPs 4 IoCs

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

    defense_evasiondiscovery
  • Write file to user bin folder 1 IoCs
    persistence
  • Reads process memory 1 TTPs 64 IoCs

    Read the memory of a process through the /proc virtual filesystem. This can be used to steal credentials.

    credential_access
  • UPX packed file 1 IoCs

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

    upx
  • Changes its process name 8 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 2 IoCs

    Uses contents of /proc filesystem to enumerate network settings.

    discovery
  • Enumerates kernel/hardware configuration 1 TTPs 9 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 shm directory 6 IoCs

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

  • Writes file to tmp directory 64 IoCs

    Malware often drops required files in the /tmp directory.

Processes

  • /tmp/superior.arm4
    /tmp/superior.arm4
    1⤵
    • Deletes Audit logs
    • Traces itself
    • Checks hardware identifiers (DMI)
    • Deletes log files
    • Enumerates active TCP sockets
    • Reads MAC address of network interface
    • Write file to user bin folder
    • Reads process memory
    • Changes its process name
    • Checks CPU configuration
    • Reads system network configuration
    • Enumerates kernel/hardware configuration
    • Reads runtime system information
    • Writes file to shm directory
    • Writes file to tmp directory
    PID:804
    • /bin/sh
      sh -c "systemctl enable sywmksqjl72.service >/dev/null 2>&1"
      2⤵
        PID:954
        • /usr/bin/systemctl
          systemctl enable sywmksqjl72.service
          3⤵
            PID:955
        • /bin/sh
          sh -c "(crontab -l 2>/dev/null | grep -qF '/usr/local/bin/mnjxcrrk3u905op') || { (crontab -l 2>/dev/null; echo '@reboot /usr/local/bin/mnjxcrrk3u905op &') | crontab -; } >/dev/null 2>&1"
          2⤵
            PID:978
            • /usr/bin/grep
              grep -qF /usr/local/bin/mnjxcrrk3u905op
              3⤵
              • Reads runtime system information
              PID:981
            • /usr/bin/crontab
              crontab -l
              3⤵
                PID:980
              • /usr/bin/crontab
                crontab -
                3⤵
                • Creates/modifies Cron job
                PID:983
              • /usr/bin/crontab
                crontab -l
                3⤵
                  PID:984
              • /bin/sh
                sh -c "nvidia-smi -pm 1 >/dev/null 2>&1"
                2⤵
                  PID:985
                • /bin/sh
                  sh -c "udevadm control --reload-rules 2>/dev/null"
                  2⤵
                    PID:986
                    • /usr/bin/udevadm
                      udevadm control --reload-rules
                      3⤵
                        PID:987
                    • /bin/sh
                      sh -c "which clang >/dev/null 2>&1"
                      2⤵
                        PID:988
                        • /usr/bin/which
                          which clang
                          3⤵
                            PID:989

                      Network

                            MITRE ATT&CK Enterprise v16

                            Reconnaissance

                            Resource Development

                            Initial Access

                            Execution

                            Scheduled Task/Job

                            1
                            T1053

                            Cron

                            1
                            T1053.003

                            Persistence

                            Scheduled Task/Job

                            1
                            T1053

                            Cron

                            1
                            T1053.003

                            Privilege Escalation

                            Scheduled Task/Job

                            1
                            T1053

                            Cron

                            1
                            T1053.003

                            Defense Evasion

                            Indicator Removal

                            2
                            T1070

                            Clear Linux or Mac System Logs

                            2
                            T1070.002

                            Virtualization/Sandbox Evasion

                            2
                            T1497

                            System Checks

                            2
                            T1497.001

                            Credential Access

                            OS Credential Dumping

                            1
                            T1003

                            Proc Filesystem

                            1
                            T1003.007

                            Discovery

                            Network Service Discovery

                            1
                            T1046

                            System Information Discovery

                            1
                            T1082

                            System Network Configuration Discovery

                            3
                            T1016

                            Internet Connection Discovery

                            2
                            T1016.001

                            Wi-Fi Discovery

                            1
                            T1016.002

                            System Network Connections Discovery

                            2
                            T1049

                            Virtualization/Sandbox Evasion

                            2
                            T1497

                            System Checks

                            2
                            T1497.001

                            Lateral Movement

                            Collection

                            Command and Control

                            Exfiltration

                            Impact

                            Replay Monitor

                            Loading Replay Monitor...

                            Downloads

                            .682e461c.pids.tmp
                            • Path /dev/shm/.682e461c.pids.tmp
                            • Size 8B
                            • SHA256 63a22297541aaf3fe0b74562cb5615ece8130c8504d025c99ff14f87cdf394b6
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 465a05466dc57b2a07c8b8a416877b45a5b80570b83b20472017a736bbdd7de1
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 6a272cd73e7a6138fc45da0d4621fdebc8f60a974a382ff88d38312785e31cd7
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 489114052061d46451440e29c7b86ddc2de68b8bc42f0daa18fd857c3db920b5
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 122f7ca5e6b848c55d64d5f96ec943e119e426f2c14efbc4729a4ba1642f1b17
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 7dd4912c05f3da43dc99458869952d4e42e66cb86baf740e8904c9399c73479a
                            • MD5 SHA1 SHA512
                            Submit Download

                            .682e461c.tmp
                            • Path /dev/shm/.682e461c.tmp
                            • Size 15B
                            • SHA256 f271f3b364f94839d88892b9258857f13b1b8a2942ffa3ab77efc2b1241ebf97
                            • MD5 SHA1 SHA512
                            Submit Download

                            .bot_lock
                            • Path /tmp/.bot_lock
                            • Size 3B
                            • SHA256 dccb3c52e7c79f7033e1ea06eadf92fd90bfd7b0b5737dc0c2511a0e163872f5
                            • MD5 SHA1 SHA512
                            Submit Download

                            .c2.conf
                            • Path /tmp/.c2.conf
                            • Size 139B
                            • SHA256 8fc0594745ae8e9716413fc5778c87ad38a24fb256db2ee994c9f46ed10f59e0
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            .credentials
                            • Path /tmp/.credentials
                            • Size 113B
                            • SHA256 95e35b3b99d06387cc27a5226b1446823375bf1cc9d40ae2b8c0b204972e30dc
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            .note
                            • Path /tmp/.note
                            • Size 120B
                            • SHA256 d9c85705abac11166f82e6a569bb2bd1f58c6156b38fc816644110ef81ee81c7
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            .oplog
                            • Path /tmp/.oplog
                            • Size 272B
                            • SHA256 99d2fb3b4bc971b9f504297a2a9d14c62a1ebe08232984665aa96bfeb3c0f4ca
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            任务清单.txt
                            • Path /tmp/任务清单.txt
                            • Size 221B
                            • SHA256 573d72a94318b911e229f159757408bdef2c8473817282e36abefc54ed82bdc0
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            节点配置.conf
                            • Path /tmp/节点配置.conf
                            • Size 122B
                            • SHA256 a6d9d8133fc4bf36b76664d0993b2e1ef081bac701ce1cfae2a933f646efab9a
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download

                            mnjxcrrk3u905op
                            • Path /usr/local/bin/mnjxcrrk3u905op
                            • Size 623KB
                            • SHA256 e73de60f8d372c305cc388ae2e8636ea8467b1f9f563ca140ec409ffc77df163
                            • MD5 SHA1 SHA512 SSDEEP TLSH
                            Submit Download

                            tmp.vUbw4l
                            • Path /var/spool/cron/crontabs/tmp.vUbw4l
                            • Size 216B
                            • SHA256 71980750d115d17513bceeddefe2f3472662b207df7623e0cfc8118d66a0d9f9
                            • MD5 SHA1 SHA512 TLSH
                            Submit Download