Emerging Threatcriticaltest
ZxShell Malware
Detects a ZxShell start by the called and well-known function name
Convert In Phoenix Studio
Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.
Launch
Florian Roth (Nextron Systems), oscd.community, Jonhnathan RibeiroCreated Thu Jul 20Updated Sat Nov 27f0b70adb-0075-43b0-9745-e82a1c608fcc2014
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
WindowsProcess Creation
ProductWindows← raw: windows
CategoryProcess Creation← raw: process_creation
Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.
Detection Logic
Detection Logic1 selector
detection:
selection:
Image|endswith: '\rundll32.exe'
CommandLine|contains:
- 'zxFunction'
- 'RemoteDiskXXXXX'
condition: selectionFalse Positives
Unlikely
False positives are unlikely for most environments. High confidence detection.
MITRE ATT&CK
Sub-techniques
Groups
Software
Other
detection.emerging-threats
Rule Metadata
Rule ID
f0b70adb-0075-43b0-9745-e82a1c608fcc
Status
test
Level
critical
Type
Emerging Threat
Created
Thu Jul 20
Modified
Sat Nov 27
Path
rules-emerging-threats/2014/TA/Axiom/proc_creation_win_apt_zxshell.yml
Raw Tags
attack.executionattack.t1059.003attack.defense-evasionattack.t1218.011attack.s0412attack.g0001detection.emerging-threats