Managed XDR

amsibypass_amsiscanbuffer_classic.doc — malware analysis report

File info

Filename
amsibypass_amsiscanbuffer_classic.doc
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Automated Bot, Template: Normal, Last Saved By: Automated Bot, Revision Number: 1, Name of Creating Application: Microsoft Office Word, Create Time/Date: Mon Jul 18 16:30:00 2022, Last Saved Time/Date: Mon Jul 18 16:30:00 2022, Number of Pages: 1, Number of Words: 9, Number of Characters: 52, Security: 0
File size
35 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
3edfb59424586435f62076eccbc59dfb35b48072
SHA256
e79c064f459f6aaf8aac50a4ed6594f1e01d0e3e2f695c8944734afc0dfc9c86
MD5
b8b1d7d2ead065256d0431a391de17f3

Signatures

Execution

T1203 office_exploit_crash: Microsoft Office process crashes (failed exploitation of a vulnerability is possible)
T1064 office_macros_suspicious: Document contains suspicious macro
T1064 office_macros: The document contains 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)

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 macro
T1064 office_macros_autoexec: The document contains an auto-start 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
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

Other

yara_rules: Static rules
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