Managed XDR

___spam___-score_req_-...sk36-lsv3673-2023_.eml (XWorm, Tinba) — malware analysis report

File info

Filename
___spam___-score_req_-12.5_5.0-payment-debit-invoice-s07366297-mlsk36-lsv3673-2023_.eml
File type
ASCII text, with CRLF line terminators
File size
547.3 KB
First seen
Last seen

Environment

w10/x86 en

Hashes

SHA1
89ca696bf854dc83ff8eda80ab9a00b825c8b26c
SHA256
de851b29bae531a268b6e90c6ab4c77f8fdf4827235f4aca3aa9dc389824f2c7
MD5
11326b1b06e52497afc62bfdffa25b8b

Malwares

  • XWorm
  • Tinba

Signatures

Execution

T1059.001 suspicious_powershell: Creates suspicious powershell process
T1064 office_macros_suspicious: Document contains suspicious macro
T1047 has_wmi: Executes one or several WMI requests
T1064 office_macros: The document contains macro
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1204.002 office_com_load: Microsoft Office loads COM DLL files (indicator of COM usage in macros)

Persistence

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the process

Privilege Escalation

T1547.001 persistence_autorun: Makes itself run automatically on Windows startup
T1574 dropper_dll: Creates DLL, which is then loaded into the 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

T1564.001 stealth_file: Creates hidden or system files
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1027.002 packer_entropy: Probably contains compressed or encrypted data
T1064 office_macros_suspicious: Document contains suspicious macro
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1027.002 packer_vb: The executable file is packed using VB
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
T1064 office_macros: The document contains macro
T1064 office_macros_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1070 stealth_window: A process created a hidden window
T1480 system_default_lang_id_present: Checks the system language
T1574 dropper_dll: Creates DLL, which is then loaded into the process
T1562.001 windows_defender_add_exclusion: Adds a path to Microsoft Defender exclusion list

Credential Access

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Discovery

T1033 sam_users_discovery: Enumerates users or groups in system with SAM API
T1497.001 antivm_disk_size: Checks the amount of free disk space
T1497.003 antisandbox_idletime: Detects Windows Idle Time to determine the uptime
T1082 has_wmi: Executes one or several WMI requests
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 antivm_queries_computername: Retrieves the computer name
T1497.003 antisandbox_sleep: The process attempted to slow down analysis
T1135 server_share_info: Retrieves information about each shared resource on a server

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Command and Control

T1071.001 network_http: Performs HTTP requests
T1102.003 cloud_google: Connects to cloud services of Google (potentially for malicious payload delivery)
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_openurl: Performs HTTP/HTTPS-requests using InternetOpenUrl

Exfiltration

T1022 encrypts_pc_info: Collects and encrypts information about the computer (possibly for exfiltration)

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
copies_self: Creates a copy of itself
dns_without_resolve: DNS query without a response
executes_dropped_exe: Executes dropped exe files
unexpected_exception: Unexpected exception
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
origin_langid: Unconventional language of the executable file
creates_in_programdata: Creates files in the ProgramData directory
test_check_service: Starts services
checktokenmembership: Checks user token with CheckTokenMembership call
writes_data: Writes big amount of data to disk

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