Overview

overview

7

Static

static

5

disconnect...64.elf

ubuntu-18.04-amd64

7

Sharing

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General

  • Target
    disconnectraw.x86_64.elf
  • Size 69KB
  • Sample260807-h2t3rssyfy
  • SHA256 11b3f4067a423158786021eee5ba5baf69a97d9cde5974c401733a64113a897d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
discoveryexecutionlinuxpersistenceprivilege_escalationupx

Malware Config

Targets

    • Target
      disconnectraw.x86_64.elf
    • Size 69KB
    • SHA256 11b3f4067a423158786021eee5ba5baf69a97d9cde5974c401733a64113a897d
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    7/10
    discoveryexecutionpersistenceprivilege_escalationupx

    • Unexpected DNS network traffic destination

      Network traffic to other servers than the configured DNS servers was detected on the DNS port.

    • Creates/modifies Cron job

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

      executionpersistenceprivilege_escalation

    • Looks up external IP address via web service

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

      discovery

    • Modifies rc script

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

      persistence

    • Modifies systemd

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

      persistenceprivilege_escalation

    • Write file to user bin folder

      persistence

    • UPX packed file

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

      upx
    behavioral1

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

Credential Access

Discovery

System Network Configuration Discovery

1
T1016

Internet Connection Discovery

1
T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks