Managed XDR

c-windows-ad5lf.exe (DCRat) — malware analysis report

File info

Filename
c-windows-ad5lf.exe
File type
PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
File size
691.5 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
cab5a5c10574f40abd42a946105721318522b8f5
SHA256
0a3c144e69013a5f870ccba2f84b6b632473b9fef817b3aef7fffa4c07a95f26
MD5
a8857893a14fd03a82b88e23ac28fbbe

Malwares

  • DCRat

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1059.001 suspicious_powershell: Creates suspicious powershell process
T1059.003 suspicious_batch: Suspicious batch

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1053.005 persistence_autorun: Makes itself run automatically on Windows startup
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Defense Evasion

T1564.001 hides_original_file: Makes original executable file hidden
T1027.002 packer_polymorphic: Creates a modified copy of itself
T1562 modify_uac_prompt: Attempts to modify UAC pop-up window behavior
T1562 disables_uac: Disable UAC
T1564.001 stealth_file: Creates hidden or system files
T1497 debugs_self: Creates a process and debugs it
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1134 sets_privilegies_via_adjusttokenprivileges: Sets process privilege via AdjustTokenPrivileges
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list
T1070 stealth_window: A process created a hidden window
T1497.001 antivm_queries_computername: Retrieves the computer name

Discovery

T1497 debugs_self: Creates a process and debugs it
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.001 antivm_queries_computername: Retrieves the computer name

Other

yara_rules: Static rules
suspicious_process: Spawns a suspicious process
creates_in_windows: Creates files in the Windows directory
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
add_base64_to_registry: Writes Base64 encoded data to registry
checktokenmembership: Checks user token with CheckTokenMembership call
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
dotnet_downloader_possible_network_problem: Dotnet program possibly has network problem
dotnet_suspicious_module_name: Dotnet program has suspicious module name

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