Managed XDR

cymulatewormmacroppsmzipxlsx.xlsx — malware analysis report

File info

Filename
cymulatewormmacroppsmzipxlsx.xlsx
File type
Microsoft Excel 2007+
File size
335 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
137e43ef55cd64a3d7ab6017a4b7be48a93b1428
SHA256
fa99c4649222a3059d32820a274221bc1d06a12a9259dfd38c3ddf82f61a621d
MD5
d57c765b1815211ba6ca628e0b9586bb

Signatures

Execution

T1203 office_write_exe: Office document dropped an executable file
T1559 suspicious_process: Spawns a suspicious process
T1064 office_macros_strings: Feature lines found in document macro
T1204.002 office_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)

Privilege Escalation

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

T1027 office_macros_entropy: The document contains a macro with high entropy (a possible sign of obfuscation)
T1027 office_macros_hex_strings: Lines in hex found in document macro
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1064 office_macros_strings: Feature lines found in document macro
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
T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)
T1552 cookie_files: Accesses cookie files

Discovery

T1057 process_interest: Enumerates processes
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.001 antivm_queries_computername: Retrieves the computer name
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1049 list_ts_rdp_sessions: Lists ts/rdp sessions
T1083 checks_recent_files: Attempt to check recently opened files through registry
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Collection

T1056.001 infostealer_keylogger: Keylogger (intercepts keystrokes)

Other

yara_rules: Static rules
executes_dropped_exe: Executes dropped exe files
creates_exe: Creates executable files in the file system
create_rpc_bindings: Creates RPC connection
break_limit_exceeded: Warning: function calls limit has been exceeded
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
open_winlogon_process: Trying to open winlogon process