Managed XDR

vtdl_yp6x4e_v (CobInt) — malware analysis report

File info

Filename
vtdl_yp6x4e_v
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
209 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
6975cfe025e8946ec845ea1d271308a6f05827a8
SHA256
1166056efdea83e0ed26d878e7bc2dbc5e29a13e08b763c8070c951afcaab3b5
MD5
13d481f1daa3d707e46b86ad5701061d

Malwares

  • CobInt

Signatures

Resource Development

T1586.001 social_telegram: Connects to Telegram (potentially for information gathering)
T1585.001 social_telegram: Connects to Telegram (potentially for information gathering)

Execution

T1047 has_wmi: Executes one or several WMI requests

Privilege Escalation

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

T1070.004 deletes_self: Moves to different location or removes the original executable file
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1027.002 pe_features: Executable file has PE anomalies (may be false positive)
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
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1070 stealth_window: A process created a hidden window
T1070.004 self_removal_command: Executes command to delete itself

Credential Access

T1552 infostealer_ftp: Collects data from local FTP clients
T1552.001 infostealer_winscp: Collects information from configuration file of WinSCP
T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1497.001 antivm_generic_cpu: Checks the CPU name, possibly for anti-virtualization
T1497.003 antisandbox_sleep_utilities: Uses Windows utilities for pausing the execution
T1518 recon_programs: Collects information about installed programs
T1057 process_interest: Enumerates processes
T1082 has_wmi: Executes one or several WMI requests
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis

Command and Control

T1032 internet_security_options: Sets Internet connections options that are not secure
T1071 internet_security_options: Sets Internet connections options that are not secure
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
cobint_stager: Specific to CobInt Stager behaviour has been detected
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
dead_host: Connects to IP addresses that do not respond to requests
unexpected_exception: Unexpected exception
create_rpc_bindings: Creates RPC connection
has_pdb: This executable file has a PDB path
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
suricata_alert: Malicious traffic detected

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