Managed XDR

banned-20250510t055219-01669-03 (Remcos) — malware analysis report

File info

Filename
banned-20250510t055219-01669-03
File type
SMTP mail, ASCII text
File size
1.1 MB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
03786b7c08db8658e92a1c4b8dbf407d1c9a4ae6
SHA256
2a2ab90b0f3fb6bd70d963bb62b34c2bc921b78ecd0ceee1f5bb204c2784a48c
MD5
8e8f9a5732600ea2590aeb5299d90040

Malwares

  • Remcos

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059 autoit: AutoIt script execution detected
T1204.002 mimics_extension: Attempts to mimic the file extension

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
T1027.002 unnamed_memory_regions_contains_pe: One or several unnamed memory regions are PE files
T1055 sets_debug_registers: Sets debug registers for a thread in a different process
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1562 dep_disable: Disables DEP
T1562 modify_uac_prompt: Attempts to modify UAC pop-up window behavior
T1036 mimics_extension: Attempts to mimic the file extension
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
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 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name
T1070 stealth_window: A process created a hidden window

Credential Access

T1503 infostealer_browser: Retrieves personal information from local Internet browsers
T1552 infostealer_mail: Collects personal data from local email clients
T1552 infostealer_browser: Retrieves personal information from local Internet browsers
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1552 infostealer_im: Collects information about installed messengers
T1552 cookie_files: Accesses cookie files
T1555.003 cookie_files: Accesses cookie files
T1555.004 windows_credential_manager: Acquire credentials from the Windows Credential Manager

Discovery

T1033 recon_beacon: The process has sent information about the computer over the network
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.002 antisandbox_foregroundwindows: Checks whether any human activity is being performed by constantly checking whether the foreground window has changed
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1057 process_interest: Enumerates processes
T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_diskenum: Sandbox evasion using enumeration of partitions
T1497.001 antivm_queries_computername: Retrieves the computer name

Collection

T1114 infostealer_mail: Collects personal data from local email clients
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1115 checks_clipboard: Monitors clipboard data

Command and Control

T1071.001 recon_beacon: The process has sent information about the computer over the network
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

Other

yara_rules: Static rules
ce_info: Remcos Configuration Data found
stealth_mapping: Maps module and removes it from disk
copies_self: Creates a copy of itself
ip_domains: Identifies an IP address using external resources
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
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
open_winlogon_process: Trying to open winlogon process

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