Managed XDR

vtdl_wr7s0wqd (ZLoader) — malware analysis report

File info

Filename
vtdl_wr7s0wqd
File type
Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1252, Author: IEUser, Last Saved By: IEUser, Name of Creating Application: Microsoft Excel, Create Time/Date: Wed Feb 9 07:07:29 2022, Last Saved Time/Date: Mon Feb 5 05:25:23 2024, Security: 0
File size
33.5 KB
First seen
Last seen

Environment

win7/x86 en

Hashes

SHA1
794d3f6041392475e015e5796600090341ca7a8a
SHA256
cab1281c5be21c248de3b1254b2ddb6654e36686cd4ca850aa14f41871af9b81
MD5
b8fcfb37295cd13b982930d7d6900ead

Malwares

  • ZLoader

Signatures

Execution

T1064 office_macros_suspicious: Document contains suspicious macro
T1059.003 suspicious_process: Spawns a suspicious process
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1559.001 com_exec: Execution of Win32_Process.Create COM Method
T1204.002 office_wmi_load: Microsoft Office loads WMI DLL files (WMI usage indicator in macroes)
T1203 suspicious_msapp: Suspicious execution of Microsoft Application (possible exploitation)
T1064 office_macros: The document contains macroses (total: 4)
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)

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
T1064 office_macros_hidden: Document contains suspicious Excel 4.0 macro
T1497 debugs_self: Creates a process and debugs it
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
T1064 office_macros: The document contains macroses (total: 4)
T1064 office_macros_strings: Feature lines found in document 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

Discovery

T1497 debugs_self: Creates a process and debugs it
T1497 windows_enumthread: Attempts to enumerate windows using EnumThreadWindows and SendMessage for text obtaining
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
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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