LOL · Binary

Explorer.exe

2 techniquesWindowsLOLBASGPL-3.0

Execute

ExecutionWindows

Execute specified .exe with the parent process spawning from a new instance of explorer.exe

Use Performs execution of specified file with explorer parent process breaking the process tree, can be used for defense evasion.

explorer.exe /root,"{PATH_ABSOLUTE:.exe}"

Evidence: Upstream reference
Environment: Local host
Context: user
Native: Execute
MITRE: T1202
Detection: Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_explorer_break_process_tree.yml
Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_explorer_lolbin_execution.yml
Elastic: github.com/elastic/detection-rules/blob/f2bc0c685d83db7db395fc3dc4b9729759cd4329/rules/windows/initial_access_via_explorer_suspicious_child_parent_args.toml
IOC: Multiple instances of explorer.exe or explorer.exe using the /root command line is suspicious.
Refs: twitter.com/CyberRaiju/status/1273597319322058752?s=20
twitter.com/bohops/status/1276356245541335048
twitter.com/bohops/status/986984122563391488
lolbas-project.github.io/lolbas/Binaries/Explorer/

ExecutionWindows

Execute notepad.exe with the parent process spawning from a new instance of explorer.exe

Use Performs execution of specified file with explorer parent process breaking the process tree, can be used for defense evasion.

explorer.exe {PATH_ABSOLUTE:.exe}

Evidence: Upstream reference
Environment: Local host
Context: user
Native: Execute
MITRE: T1202
Detection: Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_explorer_break_process_tree.yml
Sigma: github.com/SigmaHQ/sigma/blob/c04bef2fbbe8beff6c7620d5d7ea6872dbe7acba/rules/windows/process_creation/proc_creation_win_explorer_lolbin_execution.yml
Elastic: github.com/elastic/detection-rules/blob/f2bc0c685d83db7db395fc3dc4b9729759cd4329/rules/windows/initial_access_via_explorer_suspicious_child_parent_args.toml
IOC: Multiple instances of explorer.exe or explorer.exe using the /root command line is suspicious.
Refs: twitter.com/CyberRaiju/status/1273597319322058752?s=20
twitter.com/bohops/status/1276356245541335048
twitter.com/bohops/status/986984122563391488
lolbas-project.github.io/lolbas/Binaries/Explorer/