Managed XDR

vtdl_1784701211_mmlh4isq (Remcos) — malware analysis report

File info

Filename
vtdl_1784701211_mmlh4isq
File type
Composite Document File V2 Document, No summary info
File size
585.5 KB
First seen
Last seen

Environment

w11/x64 en

Hashes

SHA1
0dedd049c2e5ccca8192bd642144c97a86d066cb
SHA256
d6763b127eee4964606cca323088ece7b5650f64661d6be5f1698d5db71af0d0
MD5
b5c0eb322887b2c2773ce8c778ba15e6

Malwares

  • Remcos

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious PowerShell process
T1059.001 suspicious_process: Spawns a suspicious process

Persistence

T1037 persistence_autorun: Makes itself run automatically on Windows startup

Privilege Escalation

T1037 persistence_autorun: Makes itself run automatically on Windows startup
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1055 injection_failed: The attempt to inject into a process has failed

Defense Evasion

T1564.001 stealth_file: Creates hidden or system files
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1027 many_env_vars: An extensive number of environment variables has been created by cmd.exe (possible sign of obfuscation)
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1202 lolbin_conhost: conhost.exe spawning unexpected processes via --headless argument
T1070 stealth_window: A process created a hidden window
T1055 injection_failed: The attempt to inject into a process has failed
T1562.001 amsi_patching_attempt: Attempts to patch Microsoft AMSI protection (amsi.dll)

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1518.001 wmi_check_av: Uses WMI to check for installed antivirus software
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Command and Control

T1071.001 network_http: Performs HTTP requests

Other

suricata_alert: Malicious traffic detected
networkdyndns_checkip: Connects to a Dynamic DNS domain
copies_self: Creates a copy of itself
creates_exe: Creates executable files in the file system
dead_host: Connects to IP addresses that do not respond to requests
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
creates_in_programdata: Creates files in the ProgramData directory
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
writes_data: Writes big amount of data to disk
yara_rules: Static rules

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