Managed XDR

vtdl_wacakjhi (Cobalt Strike) — malware analysis report

File info

Filename
vtdl_wacakjhi
File type
Zip archive data, at least v2.0 to extract
File size
675.1 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
c9517eb4c76bc9374fa8c2909fdee144294c621c
SHA256
082a36225716477ad3c40baa8e0e8d541eb841cee56e3952a192b6721387d263
MD5
d7de76f5cfc441dbafd411e43c221f18

Malwares

  • Cobalt Strike

Signatures

Execution

T1203 office_runs_dll: Suspicious document behaviour (tries to execute dll file)
T1559 suspicious_process: Spawns a suspicious process
T1203 office_start_thread: Allocates memory and starts a thread inside an office application
T1064 office_macros_suspicious: Document contains suspicious 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_vb_load: Microsoft Office is loading VB DLL files (macros usage indicator)
T1204.002 mimics_extension: Attempts to mimic the file extension

Privilege Escalation

T1055 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.012 injection_runpe: Injects code into another 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 injection_thread: Code injection to a remote process using CreateRemoteThread or NtQueueApcThread
T1055.012 injection_runpe: Injects code into another process
T1221 office_attached_template: Office file downloads a suspicious template from the Internet
T1027.002 unnamed_memory_regions: Code was executed in unnamed regions
T1064 office_macros_suspicious: Document contains suspicious macro
T1497.001 antivm_queries_computername: Retrieves the computer name
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_strings: Feature lines found in document macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1036 mimics_extension: Attempts to mimic the file extension

Credential Access

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

Discovery

T1497.001 antivm_queries_computername: Retrieves the computer name
T1135 server_share_info: Retrieves information about each shared resource on a server
T1083 checks_recent_files: Attempt to check recently opened files through registry

Command and Control

T1071.001 network_http: Performs HTTP requests
T1071.001 winhttp_https: Performs HTTP/HTTPS requests using WinHttp
T1071.001 wininet_https: Performs HTTP/HTTPS requests using WinInet

Other

yara_rules: Static rules
shellcode_wininet: Wininet-shellcode behaviour detected
multiple_useragents: Uses more than one unique User-Agent
suspicious_process_network: Unusual process network activity detected
creates_doc: Creates (office) documents in the file system
create_rpc_bindings: Creates RPC connection
creates_suspended_process: Creates suspended process
get_policy_info: Retrieves information about a Policy object
suspicious_network_port: Performs TCP or UDP request to non-standard port
test_check_service: Starts services
office_links: Office file contains external links
antisandbox_check_graphics_card: Uses CreateDXGIFactory, potentially to detect graphics card

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