Elastic Defend high stable eql
Sensitive File Access - Cloud Credentials
Identifies an unusual process accessing common cloud providers credential files. Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.
Detection Logic
sequence by process.entity_id with maxspan=5m
[process where event.action == "start" and
user.id like ("S-1-5-21*", "S-1-12-*") and process.executable != null and
not (process.code_signature.subject_name : ("Johannes Schindelin", "Anaconda, Inc.") and process.code_signature.status == "trusted") and
not (process.code_signature.subject_name : "Python Software Foundation" and
process.executable : "?:\\Users\\*\\AppData\\Local\\Google\\Cloud SDK\\google-cloud-sdk\\platform\\bundledpython\\python.exe") and
not process.executable :
(
/* third party programs common install path - requires local admin */
"?:\\Program Files\\*",
"?:\\Program Files (x86)\\*",
/*
dllhost.exe (IFileOperation like view/changing security permission of a file/folder).
explorer.exe for directory and file discovery.
SearchProtocolHost.exe is for file searches and indexing.
*/
"?:\\Windows\\explorer.exe",
"?:\\Windows\\System32\\dllhost.exe",
"?:\\Windows\\System32\\SearchProtocolHost.exe",
/* Windows Defender */
"?:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\*\\MsMpEng.exe",
"?:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\*\\MpCopyAccelerator.exe") and
process.hash.sha256 != "0a8876ede7d2b65a5a0443831b2b4757d3519396a22bd55c20102bc67e6d16b3"]
[file where event.type == "access" and
/* non system accounts */
user.id like ("S-1-5-21*", "S-1-12-*") and
/* AWS/Google/Azure/Git cloud credential files */
file.path : ("?:\\users\\*\\AppData\\*\\gcloud\\credentials.db",
"?:\\users\\*\\AppData\\*\\gcloud\\legacy_credentials",
"?:\\users\\*\\AppData\\*\\gcloud\\access_tokens.db",
"?:\\users\\*\\.azure\\accessTokens.json",
"?:\\users\\*\\.azure\\azureProfile.json",
"?:\\users\\*\\.azure\\msal_token_cache.json",
"?:\\users\\*\\.azure\\msal_token_cache.bin",
"?:\\users\\*\\.azure\\msal_http_cache.bin",
"?:\\users\\*\\.aws\\credentials",
"?:\\Users\\*\\.config\\git\\credentials")] Field Validations
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