Cdb.exe

Launch 64-bit shellcode from the specified .wds file using cdb.exe.

Use Local execution of assembly shellcode.

cdb.exe -cf {PATH:.wds} -o notepad.exe

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Execute

MITRE

T1127

Detection

Sigma: github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_lolbin_cdb.yml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_unusual_process_network_connection.toml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_network_connection_from_windows_binary.toml

BlockRule: docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules

Refs

www.exploit-monday.com/2016/08/windbg-cdb-shellcode-runner.html

docs.microsoft.com/en-us/windows-hardware/drivers/debugger/cdb-command-line-options

gist.github.com/mattifestation/94e2b0a9e3fe1ac0a433b5c3e6bd0bda

mrd0x.com/the-power-of-cdb-debugging-tool/

twitter.com/nas_bench/status/1534957360032120833

lolbas-project.github.io/lolbas/OtherMSBinaries/Cdb/

Attaching to any process and executing shell commands.

Use Run a shell command under a trusted Microsoft signed binary

cdb.exe -pd -pn {process_name}
.shell {CMD}

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Execute

MITRE

T1127

Detection

Sigma: github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_lolbin_cdb.yml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_unusual_process_network_connection.toml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_network_connection_from_windows_binary.toml

BlockRule: docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules

Refs

www.exploit-monday.com/2016/08/windbg-cdb-shellcode-runner.html

docs.microsoft.com/en-us/windows-hardware/drivers/debugger/cdb-command-line-options

gist.github.com/mattifestation/94e2b0a9e3fe1ac0a433b5c3e6bd0bda

mrd0x.com/the-power-of-cdb-debugging-tool/

twitter.com/nas_bench/status/1534957360032120833

lolbas-project.github.io/lolbas/OtherMSBinaries/Cdb/

Execute arbitrary commands and binaries using a debugging script (see Resources section for a sample file).

Use Run commands under a trusted Microsoft signed binary

cdb.exe -c {PATH:.txt} "{CMD}"

Evidence

Upstream reference

Environment

Local host

Context

user

Native

Execute

MITRE

T1127

Detection

Sigma: github.com/SigmaHQ/sigma/blob/683b63f8184b93c9564c4310d10c571cbe367e1e/rules/windows/process_creation/proc_creation_win_lolbin_cdb.yml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_unusual_process_network_connection.toml

Elastic: github.com/elastic/detection-rules/blob/414d32027632a49fb239abb8fbbb55d3fa8dd861/rules/windows/defense_evasion_network_connection_from_windows_binary.toml

BlockRule: docs.microsoft.com/en-us/windows/security/threat-protection/windows-defender-application-control/microsoft-recommended-block-rules

Refs

www.exploit-monday.com/2016/08/windbg-cdb-shellcode-runner.html

docs.microsoft.com/en-us/windows-hardware/drivers/debugger/cdb-command-line-options

gist.github.com/mattifestation/94e2b0a9e3fe1ac0a433b5c3e6bd0bda

mrd0x.com/the-power-of-cdb-debugging-tool/

twitter.com/nas_bench/status/1534957360032120833

lolbas-project.github.io/lolbas/OtherMSBinaries/Cdb/