Detection rules › Sigma
Renamed AutoIt Execution
Detects the execution of a renamed AutoIt2.exe or AutoIt3.exe. AutoIt is a scripting language and automation tool for Windows systems. While primarily used for legitimate automation tasks, it can be misused in cyber attacks. Attackers can leverage AutoIt to create and distribute malware, including keyloggers, spyware, and botnets. A renamed AutoIt executable is particularly suspicious.
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Defense Evasion | T1027 Obfuscated Files or Information |
Event coverage
| Provider | Event ID | Title |
|---|---|---|
| Sysmon | 1 | Process creation |
Stages and Predicates
Stage 1: 1 of selection_1
or:
CommandLine|contains: ' /AutoIt3ExecuteScript'
CommandLine|contains: ' /ErrorStdOut'
Stage 2: 1 of selection_2
or:
Hashes|contains: 'IMPHASH=CD30A61B60B3D60CECDB034C8C83C290'
Hashes|contains: 'IMPHASH=F8A00C72F2D667D2EDBB234D0C0AE000'
Hashes|contains: 'IMPHASH=FDC554B3A8683918D731685855683DDF'
Stage 3: 1 of selection_3
OriginalFileName: [AutoIt.exe, AutoIt2.exe, AutoIt3.exe]
Stage 4: not 1 of filter_main_legit_name
or:
Image|endswith: '\AutoIt.exe'
Image|endswith: '\AutoIt2.exe'
Image|endswith: '\AutoIt3.exe'
Image|endswith: '\AutoIt3_x64.exe'
Indicators
Each row is a field, operator, and value that the rule matches. The corpus column counts how many other rules in the catalog look for the same combination: high numbers point to widely-used, community-vetted indicators. Blank or 1 shows that the indicator is specific to this rule.
| Field | Kind | Values |
|---|---|---|
CommandLine | match |
|
Hashes | match |
|
Image | ends_with |
|
OriginalFileName | eq |
|