Office (OLE) / .DOC malware analysis — malicious · 8b0b33091469c17d

MALICIOUS

Office (OLE) / .DOC

850.5 KB Created: 2021-10-07 09:24:00 Authoring application: Microsoft Office Word First seen: 2021-10-14

MD5: 6f2f9df7a84a72ccd6003a0ec20f8cc4 SHA-1: 28182365778ec737e6d0d4008ada318621db41e8 SHA-256: 8b0b33091469c17d7750b198941bc184ec40c8e3cb470b5733f43e96a17113f7

104 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.005 Visual Basic

The sample is a malicious OLE document containing VBA macros. The Document_Open macro is triggered upon opening the document, which then attempts to create a persistence mechanism by writing to the registry key HKCU\Software\Microsoft\Windows\CurrentVersion\Run\IAccessible2Proxy. It also attempts to open another document using the password 'doyouknowthatthegodsofdeathonlyeatapples?'. The exact payload or further actions are not fully discernible due to script truncation, but the intent is clearly malicious.

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` `e36f32bea62b6f4a176499b61986825adee6aa3817d4759753bc3639958ddc72`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3579 bytes
`ole10native_00.bin` `6aebc83c9076d5b03332190cbbdb7943aa0fc7b3c640d07cbc4fe0507ac36d3b`	ole-package	OLE Ole10Native stream: ObjectPool/_1695078690/Ole10Native	248611 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.

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