Overview

overview

9

Static

static

1

RYb.elf

debian-12-mipsel

9

Sharing

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General

  • Target
    RYb.elf
  • Size 96KB
  • Sample260729-zb245avvft
  • SHA256 bd744729e85f0084857466fe1d3df9d5caacb8b1f7cb0ac2bac6067361907da9
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
antivmdiscoveryexecutionpersistenceprivilege_escalation

Malware Config

Targets

    • Target
      RYb.elf
    • Size 96KB
    • SHA256 bd744729e85f0084857466fe1d3df9d5caacb8b1f7cb0ac2bac6067361907da9
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    antivmdiscoveryexecutionpersistenceprivilege_escalation

    • Creates a large amount of network flows

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

      discovery

    • Creates/modifies Cron job

      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 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
    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

Virtualization/Sandbox Evasion

1
T1497

System Checks

1
T1497.001

Credential Access

Discovery

Network Service Discovery

1
T1046

Virtualization/Sandbox Evasion

1
T1497

System Checks

1
T1497.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks