Managed XDR

banned-20251029t082625-01517-13 (Remcos) — malware analysis report

File info

Filename
banned-20251029t082625-01517-13
File type
SMTP mail, ASCII text
File size
790.8 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
9f7f8ae6c28598d7cb1b5f4c6898a0c18497eff9
SHA256
60c94c9d09c864952dbfda299a45fdeac149da4e9527f42b1f1f12e1a4b186cc
MD5
71839aee96b3afb7a4f16f1b80bb3871

Malwares

  • Remcos

Signatures

Initial Access

T1192 html_urls: HTML-document downloads a file

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1059.005 bad_vbs: Suspicious VBScript file
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1047 has_wmi: Executes one or several WMI requests
T1059.001 suspicious_process: Spawns a suspicious process
T1059 wscript_info_discovery: Collects info about system with Wscript.Shell
T1059.005 obfuscated_vbs_wmi: Suspicious WMI queries from VBScript file

Persistence

T1053.005 creates_tasks: Creates a delayed task using Task Scheduler

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
T1053.005 creates_tasks: Creates a delayed task using Task Scheduler
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
T1112 creates_largekey: Saves very large data in the registry, can be used to save the configuration or body of the malware
T1027 obfuscated_vbs: Detected obfuscated VBS
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
T1070 stealth_window: A process created a hidden window
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process
T1027 obfuscated_vbs_wmi: Suspicious WMI queries from VBScript file
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)

Discovery

T1057 has_wmi: Executes one or several WMI requests
T1518 locates_browser: Attempts to identify where browsers are installed
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1033 wscript_info_discovery: Collects info about system with Wscript.Shell
T1082 wscript_info_discovery: Collects info about system with Wscript.Shell

Other

yara_rules: Static rules
ce_info: Remcos Configuration Data found
networkdyndns_checkip: Connects to a Dynamic DNS domain
creates_exe: Creates executable files in the file system
no_graphical_activity: No graphic activity
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
break_limit_exceeded: Warning: function calls limit has been exceeded
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk
suricata_alert: Malicious traffic detected

Related reports

Managed XDR