Managed XDR

appraisers-reviewers_1022.xls (ZLoader) — malware analysis report

File info

Filename
appraisers-reviewers_1022.xls
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: Andrew-C Spinks, Last Saved By: Caroline Squires, Create Time/Date: Wed Sep 28 05:03:02 2022, Last Saved Time/Date: Wed Dec 21 06:14:16 2022, Security: 0
File size
158.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
b8a9671668423e9ce1ebe722dc0520e57aee25c8
SHA256
2a2c67a74b8caa1bd7c1d910cba348683c8f992f2129ddfd289ce7c120b269c0
MD5
325e71e8af6b828905f95d4826eba227

Malwares

  • ZLoader

Signatures

Execution

T1064 office_macros_hidden: Document contains suspicious Excel 4.0 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_hidden: Document contains suspicious Excel 4.0 macro
T1064 office_macros: The document contains macro
T1064 office_macros_autoexec: The document contains an auto-start macro
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1134 opens_thread_token: Opens the access token associated with a thread
T1134 opens_process_token: Opens the access token associated with a process

Discovery

T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1497.002 async_mouse: Watches for mouse clicks using GetAsyncKeyState to detect human activity
T1082 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining

Other

yara_rules: Static rules
office_summary: The document contains suspicious metadata
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
checktokenmembership: Checks user token with CheckTokenMembership call

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