Managed XDR

vtdl_lfdibcuj (NanoCore) — malware analysis report

File info

Filename
vtdl_lfdibcuj
File type
RFC 822 mail, ASCII text, with CRLF, CR line terminators
File size
862.4 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
7ddf4e59cf87b845a15998313dd028448dc35f3f
SHA256
3d3d9b7f977fac6211a22610572b7777be08c0b92bd8af68e3499bcc3af0e9f6
MD5
65eb6fc5b9cd4976af2112b517466508

Malwares

  • NanoCore

Signatures

Execution

T1203 office_write_exe: Office document dropped an executable file
T1559 suspicious_process: Spawns a suspicious process
T1059 autoit: AutoIt script execution detected
T1047 has_wmi: Executes one or several WMI requests

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1055.012 injection_runpe: Injects code into another process
T1055 injection_runpe_2: Executes injected code in another process
T1055 sets_debug_registers: Sets debug registers for a thread in a different 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

T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1055.012 injection_runpe: Injects code into another process
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1055 injection_runpe_2: Executes injected code in another process
T1055 sets_debug_registers: Sets debug registers for a thread in a different process
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_upx: The executable file is compressed using UPX
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
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
T1070 stealth_window: A process created a hidden window

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antivm_network_adapters: Checks NIC addresses
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity

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
office_embedded: Office document contains embedded executable file(s)
rat_nanocore: Nanocore RAT behavioural patterns detected
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
message_box: Displays a message
get_policy_info: Retrieves information about a Policy object
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card

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