Managed XDR

vtdl_1781256079_s9b05p4u (Remcos) — malware analysis report

File info

Filename
vtdl_1781256079_s9b05p4u
File type
RFC 822 mail, ASCII text, with CRLF line terminators
File size
31.9 KB
First seen
Last seen

Environment

w10/x64 en

Hashes

SHA1
79cd3bfc11d5baff12bb88fefb7da469904f6848
SHA256
b3fbc61527dae0f2613ae17e0215fb984e34c72953cd0e9d828874125127b2f2
MD5
21233f2a6f34b313dcb25923401848e2

Malwares

  • Remcos

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059.001 suspicious_powershell: Creates suspicious PowerShell process
T1059.001 suspicious_process: Spawns a suspicious process
T1204.002 mimics_extension: Attempts to mimic the file extension
T1047 antivm_wmi: Uses WMI to detect virtual environment
T1047 has_wmi: Executes one or several WMI requests

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1055 injection_failed: The attempt to inject into a process has failed
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
T1055.002 inject_write_pe: Writes PE file to another process's memory
T1055.012 injection_runpe: Injects code into another process
T1036 mimics_extension: Attempts to mimic the file extension
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1562 dep_disable: Disables DEP
T1497 debugs_self: Creates a process and debugs it
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1055 injection_failed: The attempt to inject into a process has failed
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 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Credential Access

T1552 infostealer_mail: Collects personal data from local email clients
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_im: Collects information about installed messengers
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager
T1552 cookie_files: Accesses cookie files
T1003.001 dumps_lsass: Dumps lsass.exe process (probably, to extract credentials)

Discovery

T1497 debugs_self: Creates a process and debugs it
T1497.001 antivm_wmi: Uses WMI to detect virtual environment
T1057 has_wmi: Executes one or several WMI requests
T1057 process_interest: Enumerates processes
T1082 has_wmi: Executes one or several WMI requests
T1497 evasion_printers: Attempts to detect Sandbox by exploring existing printers
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_generic_productname: Checks system product name in registry, possibly for anti-virtualization

Collection

T1114 infostealer_mail: Collects personal data from local email clients

Command and Control

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

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
ce_info: Remcos Configuration Data found
unpacker_wrong_base: Possibly, an error occurred in the file unpacker
ip_domains: Identifies an IP address using external resources
network_bind: Starts servers listening at None
network_powershell: PowerShell process network connection detected
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
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
open_winlogon_process: Trying to open winlogon process

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Managed XDR