Managed XDR

vtdl_1762889579_lj516akn (DCRat) — malware analysis report

File info

Filename
vtdl_1762889579_lj516akn
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
205ca5d4068906856abf84a5a783841f853accdd
SHA256
0bdf4dca59a1e240ac705eaed8ab846c218ea0e67a4428d5b7c29849ebf9678b
MD5
0e3c676392938df926cf1b8ba8f7188c

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

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

T1562 modify_uac_prompt: Attempts to modify UAC pop-up window behavior
T1562 disables_uac: Disable UAC
T1497 debugs_self: Creates a process and debugs it
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1036 system_filename: Created a file named as a common system file
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
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

Command and Control

T1071.001 network_http: Performs HTTP requests
T1105 cmdline_curl: Uses curl utility for network data transferring

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
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
dotnet_suspicious_module_name: Dotnet program has suspicious module name
creates_suspended_process: Creates suspended process
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
checktokenmembership: Checks user token with CheckTokenMembership call
open_winlogon_process: Trying to open winlogon process
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint

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