ZxShell Malware

testcritical
log source: windows · process_creationauthor Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeirodate 2017-07-20
01

description

What this is, in brief.

Detects a ZxShell start by the called and well-known function name

02

tags

attack.executionattack.stealthattack.t1059.003attack.t1218.011attack.s0412attack.g0001detection.emerging-threats
03

rule source (YAML)

title: ZxShell Malware
id: f0b70adb-0075-43b0-9745-e82a1c608fcc
status: test
description: Detects a ZxShell start by the called and well-known function name
references:
    - https://www.hybrid-analysis.com/sample/5d2a4cde9fa7c2fdbf39b2e2ffd23378d0c50701a3095d1e91e3cf922d7b0b16?environmentId=100
    - https://pub-7cb8ac806c1b4c4383e585c474a24719.r2.dev/116309e7121bc8b0e66e4166c06f7b818e1d3629.pdf
author: Florian Roth (Nextron Systems), oscd.community, Jonhnathan Ribeiro
date: 2017-07-20
modified: 2021-11-27
tags:
    - attack.execution
    - attack.stealth
    - attack.t1059.003
    - attack.t1218.011
    - attack.s0412
    - attack.g0001
    - detection.emerging-threats
logsource:
    category: process_creation
    product: windows
detection:
    selection:
        Image|endswith: '\rundll32.exe'
        CommandLine|contains:
            - 'zxFunction'
            - 'RemoteDiskXXXXX'
    condition: selection
falsepositives:
    - Unlikely
level: critical
04

detects techniques (2)

ATT&CK techniques this enables or maps to.

05

groups named (1)

Threat groups associated with this.

06

software named (1)

Malware and tools associated with this.

07

references

External citations — patches, advisories, analysis.