Managed XDR

sheisveryinterestingir...mebestthingsdoings.doc (Remcos) — malware analysis report

File info

Filename
sheisveryinterestingirlsheisverybestfirlformebestthingsshedoing_____undergoodthingsarehappeningevnteigimegood_____shewnatbestgirlformebestthingsdoings.doc
File type
Rich Text Format data, version 1, unknown character set
File size
243.8 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
6820bb80d79a418adecf1db8d7bf1fddf054fc4e
SHA256
2b95f8d7e77d68b4fc2f40b1c42a9da731bd9812a60c36162019063f8af24978
MD5
8e128f75977895f5e8767935ab792e5d

Malwares

  • Remcos

Signatures

Execution

T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1203 exploit_CVE_2017_11882: Exploits CVE-2017-11882 vulnerability
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1059.001 suspicious_process: Spawns a suspicious process
T1059.003 suspicious_process: Spawns a suspicious process
T1059.005 obfuscated_vbs: Detected obfuscated VBS
T1059.005 bad_vbs: Suspicious VBScript file

Privilege Escalation

T1055.002 inject_write_pe: Writes PE file to another process's memory
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
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
T1027.004 compiles_code: Compiles C# code
T1027 obfuscated_vbs: Detected obfuscated VBS
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Credential Access

T1555.003 cookie_files: Accesses cookie files
T1552 cookie_files: Accesses cookie files

Discovery

T1518 locates_browser: Attempts to identify where browsers are installed
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497.001 antisandbox_script_timer: Detected script timer window (indicative of sleep style evasion)
T1083 checks_recent_files: Attempt to check recently opened files through registry

Command and Control

T1071.001 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1071.001 network_cnc_http: Suspicious HTTP traffic
T1071.004 office_exploit_dns: The document exhibits suspicious behaviour (performs DNS requests)
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
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
suricata_alert: Malicious traffic detected
networkdyndns_checkip: Connects to a Dynamic DNS domain
creates_exe: Creates executable files in the file system
create_process_failed: Could not start the process
ip_domains: Identifies an IP address using external resources
suspicious_process_network: Unusual process network activity detected
unexpected_exception: Unexpected exception
network_powershell: Powershell process network connection detected
office_suspicious_data: Office file contains suspicious data
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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