Managed XDR

vtdl_xx8tqs1t (Remcos, NanoCore) — malware analysis report

File info

Filename
vtdl_xx8tqs1t
File type
Microsoft PowerPoint 2007+
File size
5 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
0987c5e99dbb438342c57ee8e70e99f8fd0e47ed
SHA256
597d0da1ca9fa6933cae2657da054c66c923824fcfd166bf811b10eba07dea98
MD5
a4f8255650f208421b298959a8c45f70

Malwares

  • Remcos
  • NanoCore

Signatures

Execution

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

T1055.012 injection_runpe: Injects code into another process
T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
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

T1055.012 injection_runpe: Injects code into another process
T1218 bypass_dev_utils: Executing .NET utility in a suspended state, potentially for injection
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1564.004 removes_zoneid_ads: Attempts to hide the indications that the file was downloaded from the Internet
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1055 sets_debug_registers: Sets debug registers for a thread in a different process
T1562 dep_disable: Disables DEP
T1027.002 packer_entropy: Probably contains compressed or encrypted data
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
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
T1070 stealth_window: A process created a hidden window

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files
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
T1083 checks_recent_files: Attempt to check recently opened files through registry
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

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

Command and Control

T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.001 network_http: Performs HTTP requests
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl

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
ce_info: Remcos Configuration Data found
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
suspicious_process: Spawns a suspicious process
executes_dropped_exe: Executes dropped exe files
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
test_check_service: Starts services
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card
checktokenmembership: Checks user token with CheckTokenMembership call

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