Malicious ZIP Archive analysis – 1b0b92d7852d

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File

Type

ZIP archive

6 malicious · 10 files

ZIP04425c2931a6769c25f1ec380673d84c1315a70c305ac89950991b94e5e0251d.zipZIP ArchiveATT&CK T1564.007

OFF04425c2931a6769c25f1ec380673d84c1315a70c305ac89950991b94e5e0251dextracted from ZIP Archive · MS Office DocumentATT&CK T1564.007

BIN.

BIN<Root>

BINVBA

BINdirextracted from MS Office Document

VBASheet1sub-stream · VBA ModuleATT&CK T1564.007

VBA[Stored VBA]code extracted · VBA ModuleATT&CK T1564.007

VBAThisWorkbooksub-stream · VBA ModuleATT&CK T1564.007

VBA[Stored VBA]code extracted · VBA ModuleATT&CK T1564.007

BIN_VBA_PROJECTextracted from MS Office Document

BINPROJECTextracted from MS Office Document

BINPROJECTwmextracted from MS Office Document

6 malicious · 10 files

ZIP04425c2931a6769c25f1ec380673d84c1315a70c305ac89950991b94e5e0251d.zipZIP ArchiveATT&CK T1564.007

OFF04425c2931a6769c25f1ec380673d84c1315a70c305ac89950991b94e5e0251dextracted from ZIP Archive · MS Office DocumentATT&CK T1564.007

BIN.

BIN<Root>

BINVBA

BINdirextracted from MS Office Document

VBASheet1sub-stream · VBA ModuleATT&CK T1564.007

VBA[Stored VBA]code extracted · VBA ModuleATT&CK T1564.007

VBAThisWorkbooksub-stream · VBA ModuleATT&CK T1564.007

VBA[Stored VBA]code extracted · VBA ModuleATT&CK T1564.007

BIN_VBA_PROJECTextracted from MS Office Document

BINPROJECTextracted from MS Office Document

BINPROJECTwmextracted from MS Office Document

vbaDNA - VBA Stomping & Purging Stategy detection

	Module Name0
	Sheet1	VBA Macro VBA Purging ATT&CK T1564.007 Malicious Malicious Document
PCode Decompiled VBA Stored VBA Partial Diff. Full Diff. Missing P-Code: The Office document under analysis has been identified as having undergone VBA Purging techniques, as the P-Code block within the document is currently inaccessible. As a result, the decompilation of the code was not possible, leaving only the stored code available in textual format for analysis. VBA Purging essentially involves the elimination of the PerformanceCache section from the module streams. To fully erase any traces of the P-Code section, the MODULEOFFSET between the two sections is adjusted to 0 by altering the _VBA_PROJECT stream, and all SRP streams that also house PerformanceCache data are removed. Following the removal of the compiled code, antivirus engines and Yara rules, which depend on precise string matches, are rendered ineffective. This allows macros to bypass them effortlessly, owing to the compressed format of the remaining source code.
	ThisWorkbook	Blacklist VBA VBA Macro VBA Purging ATT&CK T1564.007 Malicious Malicious Document
PCode Decompiled VBA Stored VBA Partial Diff. Full Diff. Missing P-Code: The Office document under analysis has been identified as having undergone VBA Purging techniques, as the P-Code block within the document is currently inaccessible. As a result, the decompilation of the code was not possible, leaving only the stored code available in textual format for analysis. VBA Purging essentially involves the elimination of the PerformanceCache section from the module streams. To fully erase any traces of the P-Code section, the MODULEOFFSET between the two sections is adjusted to 0 by altering the _VBA_PROJECT stream, and all SRP streams that also house PerformanceCache data are removed. Following the removal of the compiled code, antivirus engines and Yara rules, which depend on precise string matches, are rendered ineffective. This allows macros to bypass them effortlessly, owing to the compressed format of the remaining source code.

No malware configuration was found at this point.

Coming soon: export of this report's indicators to MISP and EDR platforms.