Malicious MS Office Document analysis – db3f7e9406e8

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File

Type

Microsoft Office Document

10 malicious · 19 files

OFFWeirdBudget4172MS Office DocumentT1059.005 · ATT&CK T1564.007

BIN.

BINRoot Entry

BINOleextracted from MS Office Document

BINCompObjextracted from MS Office Document

BINWorkbookextracted from MS Office Document

BIN_VBA_PROJECT_CUR

BINVBA

VBAMMsub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BINdirextracted from MS Office Document

VBAMódulo1sub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BIN_VBA_PROJECTextracted from MS Office Document

VBAEstaPasta_de_trabalhosub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BINPROJECTextracted from MS Office Document

BINPROJECTwmextracted from MS Office Document

BINSummaryInformationextracted from MS Office Document

BINDocumentSummaryInformationextracted from MS Office Document

10 malicious · 19 files

OFFWeirdBudget4172MS Office DocumentT1059.005 · ATT&CK T1564.007

BIN.

BINRoot Entry

BINOleextracted from MS Office Document

BINCompObjextracted from MS Office Document

BINWorkbookextracted from MS Office Document

BIN_VBA_PROJECT_CUR

BINVBA

VBAMMsub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BINdirextracted from MS Office Document

VBAMódulo1sub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BIN_VBA_PROJECTextracted from MS Office Document

VBAEstaPasta_de_trabalhosub-stream · VBA ModuleATT&CK T1564.007

VBS[Stored VBA]code extracted · VBScriptT1059.005 · ATT&CK T1564.007

VBS[Stored VBA].deobfuscated.vbsdeobfuscated · VBScriptT1059.005

BINPROJECTextracted from MS Office Document

BINPROJECTwmextracted from MS Office Document

BINSummaryInformationextracted from MS Office Document

BINDocumentSummaryInformationextracted from MS Office Document

vbaDNA - VBA Stomping & Purging Stategy detection

	Module Name0
	MM	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.
	Módulo1	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.
	EstaPasta_de_trabalho	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.