Managed XDR

libcrypto (DCRat) — malware analysis report

File info

Filename
libcrypto
File type
PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
File size
317.5 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
be89735f46804da67c99f83d2bdc414c4dd1a68d
SHA256
f8b80739cd0e35fa39c02ecdb979ed86e5ea00a0b67cb95b5bd18cc4f2a5af1e
MD5
453909da43e0925ccebe8b42250e43ca

Malwares

  • DCRat

Signatures

Privilege Escalation

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

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey
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

Credential Access

T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 antivm_usbstor: Reads information about usbdevices from regkey

Other

yara_rules: Static rules
network_bind: Starts servers listening at None
dead_host: Connects to IP addresses that do not respond to requests
dotnet_suspicious_module_name: Dotnet program has suspicious module name
dotnet_import_unmanaged_code: Dotnet program statically imports unmanaged functions/modules
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
writes_data: Writes big amount of data to disk
dotnet_suspicious_entrypoint: Dotnet program has suspicious entrypoint
dotnet_downloader_possible_network_problem: Dotnet program possibly has network problem

Related reports

Managed XDR