Managed XDR

vtdl_u2fpbees (NanoCore) — malware analysis report

File info

Filename
vtdl_u2fpbees
File type
PE32 executable (GUI) Intel 80386, for MS Windows
File size
1.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
cb344d9379ac74693609312cd98f5e62b6706af2
SHA256
5d89d59ccf7a2869d2d722365232c1d2419419bed513ee016f9878f20029957e
MD5
1c3214ae74575e2f30f9dd868aeeefda

Malwares

  • NanoCore

Signatures

Execution

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059 autoit: AutoIt script execution detected
T1059.003 suspicious_process: Spawns a suspicious process
T1059.005 obfuscated_vbs: Detected obfuscated VBS

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.012 injection_runpe: Injects code into another process
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1055 injection_runpe_2: Executes injected code in another process
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

T1055.012 injection_runpe: Injects code into another process
T1055 injection_runpe_2: Executes injected code in another process
T1564.001 stealth_file: Creates hidden or system files
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
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

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1082 recon_systeminfo: Collects system information (ipconfig, netstat, systeminfo, net)
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1497.001 antivm_queries_computername: Retrieves the computer name
T1082 wts_enumproc: Attempts to enumerate processes using WTS
T1016 system_network_configuration_discovery: System network configuration discovery detected
T1135 server_share_info: Retrieves information about each shared resource on a server

Collection

T1115 checks_clipboard: Monitors clipboard data
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
networkdyndns_checkip: Connects to a Dynamic DNS domain
rat_nanocore: Nanocore RAT behavioural patterns detected
creates_exe: Creates executable files in the file system
ipconfig_release: Removes network adapter IP address configuration
creates_doc: Creates (office) documents in the file system
dead_host: Connects to IP addresses that do not respond to requests
http_file_not_found: Attempts to download EXE or DLL file but receives HTML with an error
executes_dropped_exe: Executes dropped exe files
no_graphical_activity: No graphic activity
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
suspicious_network_port: Performs TCP or UDP request to non-standard port
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
pe_overlay: PE file contains overlay

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