Sigma rule: Potential In-Memory Download And Compile Of Payloads

A detection rule from the SigmaHQ repository, shown as its author published it. Dataset version ref-00b9586a26e0, updated 2023-08-22T00:00:00.000Z.

Rule

Title
Potential In-Memory Download And Compile Of Payloads
Status
test
Level
medium
Author
Sohan G (D4rkCiph3r), Red Canary (idea)
Date
2023-08-22
File
rules/macos/process_creation/proc_creation_macos_susp_in_memory_download_and_compile.yml
Commit
ccbb0369507f796db0b0ae6854c8a2be471b9d84

Detects potential in-memory downloading and compiling of applets using curl and osacompile as seen used by XCSSET malware

Log source

product
macos
category
process_creation

Detection

selection:
    CommandLine|contains|all:
        - 'osacompile'
        - 'curl'
condition: selection

False positives (as the rule lists them)

  • Unknown

Tags

  • attack.command-and-control
  • attack.execution
  • attack.t1059.007
  • attack.t1105

MITRE ATT&CK ids this rule names

References

Read on 2026-11-03T00:58:21.399Z under licence sigma-drl-1.1@d5f4c36a from https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/macos/process_creation/proc_creation_macos_susp_in_memory_download_and_compile.yml

Sources and licences

  • SigmaHQ

    "Potential In-Memory Download And Compile Of Payloads" by Sohan G (D4rkCiph3r), Red Canary (idea) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/macos/process_creation/proc_creation_macos_susp_in_memory_download_and_compile.yml.
    Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License

    Detection Rule License (DRL) 1.1

Cite this page

Dragons Eye Ransomware Tracker, "Sigma rule: Potential In-Memory Download And Compile Of Payloads",
entity page, dataset version ref-00b9586a26e0, updated 2023-08-22T00:00:00.000Z,
https://ransomware-tracker.com/detections/sigma/13db8d2e-7723-4c2c-93c1-a4d36994f7ef (accessed 2026-11-03).
Underlying source: SigmaHQ rule 13db8d2e-7723-4c2c-93c1-a4d36994f7ef, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.