Overview

overview

10

Static

static

nhsf

linux_amd64

10

Sharing

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General

  • Target

    nhsf

  • Size

    2.3MB

  • Sample

    211022-meef1scdaj

  • MD5

    1ef3c964125121175c514bd14b353e33

  • SHA1

    1b7e569494c7b59403c6d508fed7d772db9bea5e

  • SHA256

    29b06a732723c164b33cc8203328cfb6b6f0f3d65310177dfde0e463091072d5

  • SHA512

    6aa3f04909d1aca8c108b77b3cbb1f1ddc951c850740bd873c9b9a9d62ae3aa0262f7a3f29ca1a345c6dc2fff0c43083814a343ceb92721cc7f584a5e76da1c5

Score
10/10
stealthworkerantivmbotnetlinuxsuricata

Malware Config

Targets

    • Target

      nhsf

    • Size

      2.3MB

    • MD5

      1ef3c964125121175c514bd14b353e33

    • SHA1

      1b7e569494c7b59403c6d508fed7d772db9bea5e

    • SHA256

      29b06a732723c164b33cc8203328cfb6b6f0f3d65310177dfde0e463091072d5

    • SHA512

      6aa3f04909d1aca8c108b77b3cbb1f1ddc951c850740bd873c9b9a9d62ae3aa0262f7a3f29ca1a345c6dc2fff0c43083814a343ceb92721cc7f584a5e76da1c5

    Score
    10/10
    stealthworkerantivmbotnetsuricata

    • StealthWorker

      StealthWorker is golang-based brute force malware.

      botnetstealthworker

    • suricata: ET MALWARE GoBrut/StealthWorker Requesting Brute Force List (flowbit set)

      suricata: ET MALWARE GoBrut/StealthWorker Requesting Brute Force List (flowbit set)

      suricata

    • suricata: ET MALWARE GoBrut/StealthWorker Service Bruter CnC Activity

      suricata: ET MALWARE GoBrut/StealthWorker Service Bruter CnC Activity

      suricata

    • suricata: ET MALWARE GoBrut/StealthWorker Service Bruter CnC Checkin

      suricata: ET MALWARE GoBrut/StealthWorker Service Bruter CnC Checkin

      suricata

    • Attempts to identify hypervisor via CPU configuration

      Checks CPU information for indicators that the system is a virtual machine.

      antivm

    • Modifies hosts file

      Adds to hosts file used for mapping hosts to IP addresses.

    • Writes DNS configuration

      Writes data to DNS resolver config file.

    • Reads runtime system information

      Reads data from /proc virtual filesystem.

    • Writes file to tmp directory

      Malware often drops required files in the /tmp directory.

    behavioral1

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Credential Access

Discovery

Virtualization/Sandbox Evasion

1
T1497

Lateral Movement

Collection

Exfiltration

Command and Control

Dynamic Resolution

1
T1568

Impact

Tasks