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Guide 2020-06-10
Version history 2020-06-10

Summary | ZeroBOX

diagram-114.doc

VBA_macro Generic Malware MSOffice File

Category	Machine	Started	Completed
FILE	s1_win7_x6403_us	Sept. 17, 2021, 11:03 a.m.	Sept. 17, 2021, 11:05 a.m.

Size	277.0KB
Type	Composite Document File V2 Document, Little Endian, Os: Windows, Version 10.0, Code page: 1251, Author: x, Template: Normal.dotm, Last Saved By: x, Revision Number: 2, Name of Creating Application: Microsoft Office Word, Create Time/Date: Thu Sep 16 09:44:00 2021, Last Saved Time/Date: Thu Sep 16 09:44:00 2021, Number of Pages: 1, Number of Words: 0, Number of Characters: 1, Security: 0
MD5	`876b64688a3e91ca83a24cbe82bc77b5`
SHA256	`322c8cf718858e9832620b4065fb1a62ffbbade91cba5246435a3a899342e659`
CRC32	`D3937387`
ssdeep	`3072:OWx4E8St67hXqGbaNRsqYr6ZCz1xNYm9qhWmmyKyEw9u9qLF0EYouFCoOVagZk:nxLHtyhvba8qYroThW9yZEJoEou4Zk`
Yara	Contains_VBA_macro_code - Detect a MS Office document with embedded VBA macro code [binaries] Generic_Malware_Zero - Generic Malware Microsoft_Office_File_Zero - Microsoft Office File

WINWORD.EXE "C:\Program Files (x86)\Microsoft Office\Office15\WINWORD.EXE" C:\Users\test22\AppData\Local\Temp\diagram-114.doc
1616

Name	Response	Post-Analysis Lookup
No hosts contacted.

IP Address	Status	Action
No hosts contacted.

Suricata Alerts

No Suricata Alerts

Suricata TLS

No Suricata TLS

Allocates read-write-execute memory (usually to unpack itself) (5 events)

Time & API	Arguments	Status	Return	Repeated
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x6a85d000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 0 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x6a46e000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x04aa2000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x04aa2000 process_handle: 0xffffffff	1	0	0
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 length: 4096 protection: 64 (PAGE_EXECUTE_READWRITE) base_address: 0x04ab3000 process_handle: 0xffffffff	1	0	0

Creates (office) documents on the filesystem (1 event)

file	C:\Users\test22\AppData\Local\Temp\~$agram-114.doc

Creates hidden or system file (1 event)

Time & API	Arguments	Status	Return	Repeated
NtCreateFile Sept. 17, 2021, 11:03 a.m.	create_disposition: 5 (FILE_OVERWRITE_IF) file_handle: 0x000004a8 filepath: C:\Users\test22\AppData\Local\Temp\~$agram-114.doc desired_access: 0x40100080 (FILE_READ_ATTRIBUTES\|SYNCHRONIZE\|GENERIC_WRITE) file_attributes: 2 (FILE_ATTRIBUTE_HIDDEN) filepath_r: \??\C:\Users\test22\AppData\Local\Temp\~$agram-114.doc create_options: 4194400 (FILE_NON_DIRECTORY_FILE\|FILE_SYNCHRONOUS_IO_NONALERT) status_info: 2 (FILE_CREATED) share_access: 0 ()	1	0	0

Changes read-write memory protection to read-execute (probably to avoid detection when setting all RWX flags at the same time) (1 event)

Time & API	Arguments	Status	Return	Repeated
NtProtectVirtualMemory Sept. 17, 2021, 11:03 a.m.	process_identifier: 1616 stack_dep_bypass: 0 stack_pivoted: 0 heap_dep_bypass: 1 length: 4096 protection: 32 (PAGE_EXECUTE_READ) base_address: 0x7ef70000 process_handle: 0xffffffff	1	0	0