Office (OLE) / .DOC malware analysis — malicious · 78219f820321427d

MALICIOUS

Office (OLE) / .DOC

322.0 KB Created: 2021-09-16 09:42:00 First seen: 2021-09-23

MD5: 09e8460dd13d84399e7b509fd6493b2a SHA-1: abb72a260579d902757a28253453446cf73314a9 SHA-256: 78219f820321427d74c695c7718f02d147ecd691f0234f97cf476b88f5a08ad9

104 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro that is triggered by the Document_Open event. This macro appears to be designed to copy embedded content, potentially a malicious executable, to a specific location and then open it. The macro also attempts to set the VBAWarnings registry key to 1, which could disable macro security warnings for future documents. The presence of the '2281337' password for opening a document suggests a potential attempt to disguise or protect a malicious payload.

Heuristics 5

Office EPRINT stream contains EMF object high CVE related OLE_EPRINT_EMF_OBJECT

OLE ObjectPool contains an EPRINT stream with EMF data. This is rare in normal documents and is CVE-2007-3893/MS07-046-family evidence when paired with Office exploit payload anomalies, but the malformed EMF record is not proven by this rule alone.
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://schemas.microsoft.com/office/2006/encryption
- http://schemas.microsoft.com/office/2006/keyEncryptor/password
- http://schemas.microsoft.com/office/2006/keyEncryptor/certificate
- http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `c5eb4757ddca02546c29b8bb7ebe1e28259400c86649771c5092c092ea3df037`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2971 bytes
`ole10native_00.bin` `1301ad2f56cb05e2e1d6e9246ec99a39f774b5cfe88be5d724e731284ad0b934`	ole-package	OLE Ole10Native stream: ObjectPool/_1693260807/Ole10Native	156481 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.95, consistent with packed or encrypted content.

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