Deep Malware Analysis of c16df0bfc6fda86dbfa8948a566d32c1 | md5: c16df0bfc6fda86dbfa8948a566d32c1 | Office Document | Blacklist VBA | SOS: 0.35 | PowerShell | Batch Command | PowerShell Call | T1059.005 | SOS: 0.32 | T1059.001 | T1027 | DeObfuscated | T1105

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MD5	c16df0bfc6fda86dbfa8948a566d32c1
Sha1	610921e6f95843045fec4393c088dd1f896a6571
Sha256	e38c53aedf49017c47725e4912fc7560e1c8ece2633c05057b22fd4a8ed28eb3
Sha384	a1ca33fa67fe6687344860c1ff9e4e95379aef7a19d329be54cc14b280c64ed3534f256fdfdf0d6c85edbbfc2928e1fa
Sha512	461ae0e01189f0abcd2b3ecc9b80743e023e726eec7ea8ac95778ba97d0166965fe724d38e6f19ce4e1787a93982de100934b41a2972b886e5f8c29c7f4f0f65
SSDeep	384:Xsz8ND9/dxdG5BEQjNxt/ZtNN+n222UhfFN1NKeVQ11NXHEHre8RK:XDVEBRZxllNGZfFN1NF0HOhRK
TLSH	38729E3DD1487430EA93A67C500F26F1F261D183E4527D5F3926FBAE9BA47CB071A488

ThisDocument

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:docm~T1059.005>oox:vba~T1059.005>scr:bat>scr:ps1~T1027~T1059.001~T1105

Shape oox:docm>oox:vba>scr:bat>scr:ps1

malicious 4 nodes

Path oox:docm~T1059.005>bin

Shape oox:docm>bin

technique2 nodes

Config. Field	Value
URL in PowerShell #1	https:huhuhuhuhuhuhuhuhuhuhu

We extracted this malware's full configuration (C2, credentials, campaign IDs…).

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URLs in VB Code - #1 URIsuspect

https:huhuhuhuhuhuhuhuhuhuhu

Deobfuscated PowerShell UNKNWOWNmalicious

start huhuhuhuhuhuhuhuhuhuhu

Full artefact values (URLs, paths, registry keys, scripts…) are available with Essential.

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	Module Name0
	ThisDocument	Blacklist VBA 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.