Office (OLE) / .DOC malware analysis — malicious · 946e896b57da970f

MALICIOUS

Office (OLE) / .DOC

356.0 KB Created: 2021-09-23 08:07:00 First seen: 2021-09-27T12:10:28+00:00

MD5: 149c2c6fc6cd9dda8b091cf3b63341f5 SHA-1: a2d5807a7454318f071d666b945829dc66c8c0a0 SHA-256: 946e896b57da970f785c088f109dc7afeb051d354987281702071c7b7f552c5c

104 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious OLE document containing VBA macros, specifically a Document_Open macro. This macro attempts to create a file in the user's template path and then opens it with a hardcoded password '2281337'. The macro's obfuscated string concatenation and conditional logic suggest it's designed to download and execute a secondary payload. The presence of the Document_Open macro and the suspicious file creation/opening behavior strongly indicate a malicious intent, likely to compromise the user's system.

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` `8c0f3e2769b6b5ee2247e73c38977b325a288cca81275eb61e7d50a710ca8ae9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3401 bytes
`ole10native_00.bin` `479c5345725aec6bcdd519b5aa14cc6727cb6deb8232e1dea2b26b49fcb0456a`	ole-package	OLE Ole10Native stream: ObjectPool/_1693864210/Ole10Native	172856 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.96, consistent with packed or encrypted content.

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