Managed XDR

reverse_shell_macro_obf.doc — malware analysis report

File info

Filename
reverse_shell_macro_obf.doc
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Bryan Lee, Template: Normal.dotm, Last Saved By: George Seah, Revision Number: 34, Name of Creating Application: Microsoft Office Word, Total Editing Time: 01:31:00, Create Time/Date: Mon Feb 3 02:11:00 2025, Last Saved Time/Date: Tue Mar 11 08:38:00 2025, Number of Pages: 1, Number of Words: 7, Number of Characters: 43, Security: 1
File size
40.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
bd9f1ea90251a1b148800cb4f104e32ed1b1477a
SHA256
881e27e02b5cef26babcdf1b3e77c399f714ad979b3935e5da21066fcb824ae3
MD5
a65d240a39c3b1d163f49535280cf11f

Signatures

Execution

T1059.001 suspicious_powershell: Suspicious document behaviour (creates powershell process)
T1064 office_macros_suspicious: Document contains suspicious macro
T1203 office_exploit_http: The document exhibits suspicious behaviour (performs HTTP requests)
T1059.001 suspicious_process: Spawns a suspicious process
T1064 office_macros: The document contains macroses (total: 2)
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)
T1059.001 url_cmdline: Cmdline of process contains URL
T1059.003 url_cmdline: Cmdline of process contains URL

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

T1064 office_macros_suspicious: Document contains suspicious macro
T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
T1064 office_macros: The document contains macroses (total: 2)
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
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

T1497 evasion_trustrecords: Attempts to detect Sandbox exploring trusted documents
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)
T1071.004 office_exploit_dns: The document exhibits suspicious behaviour (performs DNS requests)
T1102.003 cloud_github: Connects to cloud services of Github (potentially for malicious payload delivery)
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
create_rpc_bindings: Creates RPC connection
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