Deep Malware Analysis of 89274bc96aa32923d5f34832aba6245e | md5: 89274bc96aa32923d5f34832aba6245e | Office Document | VBA Stomping | ATT&CK T1564.007 | Malicious | Malicious Document | T1059.005

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MD5	89274bc96aa32923d5f34832aba6245e
Sha1	76901d4432262ae1313e60054e1a56378a3a0eae
Sha256	0f5657269986cadddb478f8a5bb25becbeed713210247f3daea14becb0436571
Sha384	90b048083f93bc266e5db0a668fe10ae0ea6e628a8c8044db1ff9fdc712a0da236249e11a292bac62d54d65348a14f4c
Sha512	691baff92576f2969035d810239bd29b40f9fdf8a0e3824abaa1557c91dbdb5682d3220f5570546f8d4fba6ece927fbd41bcbedc30965ecb06bd56ab47e93207
SSDeep	3072:A98fkBzs4xcDWTgNoWcMfvA8/R7lS4Hqu6bCtL:fkBzs4CDWhMfvA8BlS4yb8
TLSH	5FC302828671A81DDBB611B5544C51F890D41C53F9E1E0DE37C4AA8C261BABF2B2CF8F

Módulo1

STICH beta Structural Threat Infection Chain Hash

A content-independent fingerprint of the infection method: successive formats, internal objects and MITRE techniques from the initial file to each final payload.

STICH Path = the fingerprint (canonical chain with techniques) STICH Shape = structure only Only determinant branches produce STICH Paths.

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Path oox:xlsm~T1059.005~T1564.007>oox:media>img

Shape oox:xlsm>oox:media>img

malicious 3 nodes

Path oox:xlsm~T1059.005~T1564.007>bin

Shape oox:xlsm>bin

malicious 2 nodes

	Module Name0
	Módulo1	VBA Stomping ATT&CK T1564.007 Malicious Malicious Document VBA Macro
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.
	Módulo2	VBA Macro