Office (OLE) / .DOC malware analysis — malicious · f9ec158e6d838e20

MALICIOUS

Office (OLE) / .DOC

837.5 KB Created: 2021-08-17 11:48:00 Authoring application: Microsoft Office Word

MD5: 2e6a712f9e3f97617d94ecc36e2a513d SHA-1: 197641b4c8da57c988031bd8908a0cb11fa18e3d SHA-256: f9ec158e6d838e201a3a576daf61ece234a42915822ea2864dcd3ae4576eec93

104 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The sample is a malicious Office document containing a VBA macro triggered by the Document_Open event. The macro attempts to create a file named 'glib.doc' in the user's template directory and then opens it. The script also contains logic to search for files and potentially copy them, suggesting a downloader or dropper functionality. The presence of the Document_Open macro and the attempt to create and open a new document strongly indicate a malicious intent to execute further stages.

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` `c89270cabf74a62b84bb703cccb4b5fac77b5b9e6f804366376fd0e12ae0b50b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	2713 bytes
`ole10native_00.bin` `618c890cacdeb3e606e613e9710081f4e1167bbdc7a8eb29609fb9bf13903adc`	ole-package	OLE Ole10Native stream: ObjectPool/_1690680163/Ole10Native	668975 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.99, consistent with packed or encrypted content.

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