Overview

overview

7

Static

static

1

b3c455c083...in.elf

debian-12-armhf

7

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • 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
    04/10/2026, 04:26

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General

  • Target
    b3c455c0833628ac.bin.elf
  • Size 181KB
  • Sample261004-e2nn7szaqb
  • SHA256 0313cef6ee5ccac16714f02e3ff9dfd5181c55419f96a6443d9812f0d37a8eaa
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
antivmdefense_evasiondiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Signatures

  • Deletes itself 1 IoCs
  • Deletes journal logs 1 TTPs 3 IoCs

    Deletes systemd journal logs. Likely to evade detection.

    defense_evasion
  • Modifies the /etc/hosts DNS resolution file 1 TTPs 1 IoCs

    Modifying the /etc/hosts name-resolution file changes IP routing, which can facilitate traffic hijacking or the blocking of (security update) endpoints.

  • 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 4 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

  • Modifies rc script 2 TTPs 1 IoCs

    Adding/modifying system rc scripts is a common persistence mechanism.

    persistence
  • Modifies systemd 2 TTPs 1 IoCs

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

    persistenceprivilege_escalation
  • Changes its process name 10 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
  • Reads runtime system information 64 IoCs

    Reads data from /proc virtual filesystem.

    discovery

Processes

  • /tmp/b3c455c0833628ac.bin.elf
    /tmp/b3c455c0833628ac.bin.elf
    1⤵
    • Deletes itself
    • Modifies the /etc/hosts DNS resolution file
    • Creates/modifies Cron job
    • Deletes log files
    • Enumerates active TCP sockets
    • Modifies rc script
    • Modifies systemd
    • Changes its process name
    • Checks CPU configuration
    • Reads system network configuration
    • Reads runtime system information
    PID:794
    • /bin/sh
      sh -c "systemctl daemon-reload 2>/dev/null; systemctl enable killer-helper.service 2>/dev/null"
      2⤵
        PID:811
        • /usr/bin/systemctl
          systemctl daemon-reload
          3⤵
            PID:813
          • /usr/bin/systemctl
            systemctl enable killer-helper.service
            3⤵
              PID:840
          • /bin/sh
            sh -c "journalctl --rotate --vacuum-time=1s 2>/dev/null"
            2⤵
              PID:818
              • /usr/bin/journalctl
                journalctl --rotate "--vacuum-time=1s"
                3⤵
                • Deletes journal logs
                PID:825

          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

                Indicator Removal

                2
                T1070

                Clear Linux or Mac System Logs

                2
                T1070.002

                Virtualization/Sandbox Evasion

                1
                T1497

                System Checks

                1
                T1497.001

                Credential Access

                Adversary-in-the-Middle

                1
                T1557

                Discovery

                System Network Configuration Discovery

                1
                T1016

                Internet Connection Discovery

                1
                T1016.001

                System Network Connections Discovery

                1
                T1049

                Virtualization/Sandbox Evasion

                1
                T1497

                System Checks

                1
                T1497.001

                Lateral Movement

                Collection

                Adversary-in-the-Middle

                1
                T1557

                Command and Control

                Exfiltration

                Impact

                Replay Monitor

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                Downloads

                .hosts.tmp.2mba7p
                • Path /etc/.hosts.tmp.2mba7p
                • Size 259B
                • SHA256 af89e09cb7439a329152aa1b28a3901ca4cd802f3f3719d2db3ffdad84a79bdb
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                killer-helper
                • Path /etc/cron.d/killer-helper
                • Size 45B
                • SHA256 2401bba8cdbe1b2f259b6bac2acf553ddacea9e3f7e70dbc55a0edbec171794b
                • MD5 SHA1 SHA512
                Submit Download

                hosts
                • Path /etc/hosts
                • Size 789B
                • SHA256 c41661170949c85624995c68d22c1b1b052d52bb8d93be9020b703dce668bd80
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                rc.local
                • Path /etc/rc.local
                • Size 34B
                • SHA256 39c3adba30914b4b1f783d4a6e064a69532f236ef273c9eb0dfdef32a9a7cefd
                • MD5 SHA1 SHA512
                Submit Download

                killer-helper.service
                • Path /etc/systemd/system/killer-helper.service
                • Size 186B
                • SHA256 84c3b3dd46f76cb9fffee80fda7ebcd57bbe0d5088b3eddff46b1beb3b0cf599
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                .killer-wd.pid.tmp.808
                • Path /run/.killer-wd.pid.tmp.808
                • Size 23B
                • SHA256 060f00385f93e5785cc45cd9d298d3c5aed516a44af5b4a4cb5f045ab65c20a7
                • MD5 SHA1 SHA512
                Submit Download

                .killer.pid.tmp.807
                • Path /run/.killer.pid.tmp.807
                • Size 23B
                • SHA256 7ba235719fd81506b8f6f4bc4b63c5032bf870a6cd7fa7d728cc4628295c02ec
                • MD5 SHA1 SHA512
                Submit Download

                .locker.pid.tmp.812
                • Path /run/.locker.pid.tmp.812
                • Size 23B
                • SHA256 4ab32e48cd3d6e9cc144acafdefbd52d72f022953176d156109a5a87f8e00b6f
                • MD5 SHA1 SHA512
                Submit Download

                .locker.ready
                • Path /run/.locker.ready
                • Size 1B
                • SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
                • MD5 SHA1 SHA512
                Submit Download

                .main.pid.tmp.802
                • Path /run/.main.pid.tmp.802
                • Size 17B
                • SHA256 ff472eee7902bf34f3a98b95bfa145dbcfc427c35d781e640f2c19238b9bc9a5
                • MD5 SHA1 SHA512
                Submit Download

                .sh7f3a.dis.list
                • Path /run/.sh7f3a.dis.list
                • Size 62B
                • SHA256 5774eed03386d2d304b9c233532de7564030ecb2954556224f1e52ec92956b72
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                .watchdog.pid.tmp.812
                • Path /run/.watchdog.pid.tmp.812
                • Size 23B
                • SHA256 be1fb940716f7d15468616a1ca982b4c6771161180644afe71af4561feb040b8
                • MD5 SHA1 SHA512
                Submit Download

                .watchdog2.pid.tmp.812
                • Path /run/.watchdog2.pid.tmp.812
                • Size 23B
                • SHA256 9fb6c025847a718dfc9552a9a6ea5311fd3bfe59ba3ac04a0c677c51b0c0a5c2
                • MD5 SHA1 SHA512
                Submit Download

                .system-helper
                • Path /usr/lib/systemd/.system-helper
                • Size 181KB
                • SHA256 0313cef6ee5ccac16714f02e3ff9dfd5181c55419f96a6443d9812f0d37a8eaa
                • MD5 SHA1 SHA512 SSDEEP TLSH
                Submit Download