Rclone Copy Process Args

Any use of rclone should be heavily scrutinzed in the environment. It is a common binary to see attackers use to get data out

Detection Query

//Any use of rclone should be heavily scrutinzed in the environment. It is a common binary to see attackers use to get data out
// Definitely block the usage of rclone as a binary and as a cloud app (by denying consent)
//Make sure to block rclone.org and https://github.com/rclone/rclone
let rclone_args = pack_array('copy','ignore-existing','auto-confirm'); //not including binary name in here here in case attacker renames binary.
DeviceProcessEvents 
| where TimeGenerated >ago(90d)
| where ProcessCommandLine has_all(rclone_args) or ProcessCommandLine contains "rclone.exe copy" or FileName == "rclone.exe" //cover rename, args and standard use of binary

//Flags for copy command (not including global flags such as auto-confirm):
     /// --absolute                Put a leading / in front of path names
    //  --combined string         Make a combined report of changes to this file
  //   --create-empty-src-dirs   Create empty source dirs on destination after copy
   //  --csv                     Output in CSV format
  //   --dest-after string       Report all files that exist on the dest post-sync
 //    --differ string           Report all non-matching files to this file
//  -d, --dir-slash               Append a slash to directory names (default true)
//      --dirs-only               Only list directories
//      --error string            Report all files with errors (hashing or reading) to this file
//      --files-only              Only list files (default true)
//  -F, --format string           Output format - see lsf help for details (default "p")
//      --hash h                  Use this hash when h is used in the format MD5|SHA-1|DropboxHash (default "md5")
//  -h, --help                    help for copy
//      --match string            Report all matching files to this file
//      --missing-on-dst string   Report all files missing from the destination to this file
//      --missing-on-src string   Report all files missing from the source to this file
//  -s, --separator string        Separator for the items in the format (default ";")
//  -t, --timeformat string       Specify a custom time format, or 'max' for max precision supported by remote (default: 2006-01-02 15:04:05)

//Flags for anything which can copy a file (flag group Copy):
//      --check-first                                 Do all the checks before starting transfers
//  -c, --checksum                                    Check for changes with size & checksum (if available, or fallback to size only)
//      --compare-dest stringArray                    Include additional server-side paths during comparison
//      --copy-dest stringArray                       Implies --compare-dest but also copies files from paths into destination
   //   --cutoff-mode HARD|SOFT|CAUTIOUS              Mode to stop transfers when reaching the max transfer limit HARD|SOFT|CAUTIOUS (default HARD)
  //   --ignore-case-sync                            Ignore case when synchronizing
   //   --ignore-checksum                             Skip post copy check of checksums
  //    --ignore-existing                             Skip all files that exist on destination
 //    --ignore-size                                 Ignore size when skipping use modtime or checksum
 // -I, --ignore-times                                Don't skip items that match size and time - transfer all unconditionally
   //   --immutable                                   Do not modify files, fail if existing files have been modified
  //    --inplace                                     Download directly to destination file instead of atomic download to temp/rename
 // -l, --links                                       Translate symlinks to/from regular files with a '.rclonelink' extension
 //    --max-backlog int                             Maximum number of objects in sync or check backlog (default 10000)
  //    --max-duration Duration                       Maximum duration rclone will transfer data for (default 0s)
    // --max-transfer SizeSuffix                     Maximum size of data to transfer (default off)
//  -M, --metadata                                    If set, preserve metadata when copying objects
 //     --modify-window Duration                      Max time diff to be considered the same (default 1ns)
 //    --multi-thread-chunk-size SizeSuffix          Chunk size for multi-thread downloads / uploads, if not set by filesystem (default 64Mi)
  //   --multi-thread-cutoff SizeSuffix              Use multi-thread downloads for files above this size (default 256Mi)
 //    --multi-thread-streams int                    Number of streams to use for multi-thread downloads (default 4)
 //     --multi-thread-write-buffer-size SizeSuffix   In memory buffer size for writing when in multi-thread mode (default 128Ki)
  //    --name-transform stringArray                  Transform paths during the copy process
 //     --no-check-dest                               Don't check the destination, copy regardless
  //    --no-traverse                                 Don't traverse destination file system on copy
 //     --no-update-dir-modtime                       Don't update directory modification times
 //     --no-update-modtime                           Don't update destination modtime if files identical
 //     --order-by string                             Instructions on how to order the transfers, e.g. 'size,descending'
  //    --partial-suffix string                       Add partial-suffix to temporary file name when --inplace is not used (default ".partial")
 //     --refresh-times                               Refresh the modtime of remote files
 //     --server-side-across-configs                  Allow server-side operations (e.g. copy) to work across different configs
 //     --size-only                                   Skip based on size only, not modtime or checksum
 //     --streaming-upload-cutoff SizeSuffix          Cutoff for switching to chunked upload if file size is unknown, upload starts after reaching cutoff or when file ends (default 100Ki)
//  -u, --update                                      Skip files that are newer on the destination

//Important flags useful for most commands (flag group Important):
//  -n, --dry-run         Do a trial run with no permanent changes
 // -i, --interactive     Enable interactive mode
//  -v, --verbose count   Print lots more stuff (repeat for more)

//Flags for filtering directory listings (flag group Filter):
//      --delete-excluded                     Delete files on dest excluded from sync
//      --exclude stringArray                 Exclude files matching pattern
//      --exclude-from stringArray            Read file exclude patterns from file (use - to read from stdin)
 //     --exclude-if-present stringArray      Exclude directories if filename is present
 //     --files-from stringArray              Read list of source-file names from file (use - to read from stdin)
 //     --files-from-raw stringArray          Read list of source-file names from file without any processing of lines (use - to read from stdin)
//  -f, --filter stringArray                  Add a file filtering rule
//      --filter-from stringArray             Read file filtering patterns from a file (use - to read from stdin)
//      --hash-filter string                  Partition filenames by hash k/n or randomly @/n
//      --ignore-case                         Ignore case in filters (case insensitive)
//      --include stringArray                 Include files matching pattern
//      --include-from stringArray            Read file include patterns from file (use - to read from stdin)
//      --max-age Duration                    Only transfer files younger than this in s or suffix ms|s|m|h|d|w|M|y (default off)
//      --max-depth int                       If set limits the recursion depth to this (default -1)
//      --max-size SizeSuffix                 Only transfer files smaller than this in KiB or suffix B|K|M|G|T|P (default off)
  //    --metadata-exclude stringArray        Exclude metadatas matching pattern
//      --metadata-exclude-from stringArray   Read metadata exclude patterns from file (use - to read from stdin)
 //     --metadata-filter stringArray         Add a metadata filtering rule
//      --metadata-filter-from stringArray    Read metadata filtering patterns from a file (use - to read from stdin)
 //    --metadata-include stringArray        Include metadatas matching pattern
 //    --metadata-include-from stringArray   Read metadata include patterns from file (use - to read from stdin)
 //     --min-age Duration                    Only transfer files older than this in s or suffix ms|s|m|h|d|w|M|y (default off)
 //     --min-size SizeSuffix                 Only transfer files bigger than this in KiB or suffix B|K|M|G|T|P (default off)

//Flags for listing directories (flag group Listing):
//      --default-time Time   Time to show if modtime is unknown for files and directories (default 2000-01-01T00:00:00Z)
 //     --fast-list           Use recursive list if available; uses more memory but fewer transactions

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