diff --git a/rules/windows/process_creation/proc_creation_win_hktl_lazagne.yml b/rules/windows/process_creation/proc_creation_win_hktl_lazagne.yml index 4cafe3117..0c13c98b2 100644 --- a/rules/windows/process_creation/proc_creation_win_hktl_lazagne.yml +++ b/rules/windows/process_creation/proc_creation_win_hktl_lazagne.yml @@ -10,28 +10,54 @@ references: - https://cloud.google.com/blog/topics/threat-intelligence/alphv-ransomware-backup/ - https://securelist.com/defttorero-tactics-techniques-and-procedures/107610/ - https://github.com/CyberMonitor/APT_CyberCriminal_Campagin_Collections/raw/800c0e06571993a54e39571cf27fd474dcc5c0bc/2017/2017.11.14.Muddying_the_Water/muddying-the-water-targeted-attacks.pdf -author: Nasreddine Bencherchali (Nextron Systems) +author: Nasreddine Bencherchali, Swachchhanda Shrawan Poudel, Nextron Systems date: 2024-06-24 -modified: 2024-08-16 +modified: 2025-06-04 tags: - attack.credential-access logsource: product: windows category: process_creation detection: - selection_img: - Image|endswith: '\lazagne.exe' - selection_clionly: + selection_metadata: + - Image|endswith: '\lazagne.exe' + - Hashes|contains: + - 'IMPHASH=ba5546933531fafa869b1f86a4e2a959' + - 'IMPHASH=7aa1951517b3b8d38b12f874b66196c9' + - 'IMPHASH=be10bb45cef8dcc6869b921dd20884ae' + - 'IMPHASH=4e3e7ce958acceeb80e70eeb7d75870e' + - 'IMPHASH=fc40519af20116c903e3ff836e366e39' + - 'IMPHASH=1975641ebd67bc0f49282a7b8555b7b2' + - 'IMPHASH=468ad8de9dcf3ce7a0becc5916ec6adb' + - 'IMPHASH=e5d81cf6a49d9472d6de8c1764efdfb4' + - 'IMPHASH=b87afca7a1175b7eb49b7c1eb6d58adf' + selection_img_cli: # Note: This selection can be prone to FP. An initial baseline is required Image|contains: - ':\PerfLogs\' - ':\ProgramData\' - ':\Temp\' - ':\Tmp\' + - ':\Users\Public\' - ':\Windows\Temp\' + - '\$Recycle.bin' - '\AppData\' + - '\Desktop\' - '\Downloads\' - - '\Users\Public\' + - '\Favorites\' + - '\Links\' + - '\Music\' + - '\Photos\' + - '\Pictures\' + - '\Saved Games\' + - '\Searches\' + - '\Users\Contacts\' + - '\Users\Default\' + - '\Users\Searches\' + - '\Videos\' + - '\Windows\addins\' + - '\Windows\Fonts\' + - '\Windows\IME\' CommandLine|endswith: - '.exe all' - '.exe browsers' @@ -56,7 +82,6 @@ detection: - 'chats ' - 'databases ' - 'games ' - - 'git ' - 'mails ' - 'maven ' - 'memory ' @@ -66,19 +91,12 @@ detection: - 'sysadmin ' - 'unused ' - 'wifi ' - - 'windows ' selection_cli_options: CommandLine|contains: - - '-oA' - - '-oJ' - - '-oN' - - '-output' - - '-password' - - -1Password + - '-1Password' - '-apachedirectorystudio' - '-autologon' - '-ChromiumBased' - - '-composer' - '-coreftp' - '-credfiles' - '-credman' @@ -124,10 +142,8 @@ detection: - '-vault' - '-vaultfiles' - '-vnc' - - '-windows' - '-winscp' - - '-wsl' - condition: selection_img or selection_clionly or (selection_cli_modules and selection_cli_options) + condition: selection_metadata or selection_img_cli or all of selection_cli_* falsepositives: - Some false positive is expected from tools with similar command line flags. # Note: Increase the level to "high" after an initial baseline