RTF / .DOC malware analysis — malicious · e4622b780a29f003

MALICIOUS

RTF / .DOC

341.2 KB

MD5: 5562f3b88022564084161bd04006d11c SHA-1: d42348d38e74d083e171a008522303f4adfe166e SHA-256: e4622b780a29f003f99cc9786476baee2b5ee20ffd64330aa7166b64719ff523

180 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The RTF document contains multiple OLE objects, including automatically linked and updated objects, which are designed to trigger execution upon opening. The 'SE_ENABLE_LURE' heuristic indicates the document likely instructs the user to enable content, a common tactic for macro-based malware droppers. No scripts were extracted, and the OLE object content itself was not detailed enough to determine the exact payload or family.

Heuristics 6

Composite Moniker in RTF OLE object high CVE related RTF_COMPOSITE_MONIKER_RELATED

RTF contains Composite Moniker CLSID in OLE object context, but no nearby scriptlet/SCT payload was confirmed. Treat as related moniker attack-surface evidence rather than proof of CVE-2017-8570 exploitation.
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\objupdate forces OLE activation high RTF_OBJUPDATE

RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
OLE object data medium RTF_OBJDATA

RTF contains 3 \objdata section(s) — embedded OLE objects
Embedded OLE object medium RTF_OBJEMB

RTF contains \objemb — embedded OLE object
Macro/content-enable lure medium SE_ENABLE_LURE

Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00000969.bin` `02262530895f60a4c088fb13ad23428a71bd3c0c8d34532dce0b606fee62ff8a`	rtf-objdata-decoded	RTF \objdata at offset 0x969	75716 bytes
`objdata_01_off0002713a.bin` `f4c761490fd63fc4aa791746a9a2b588dafd9e2c764f57f0c85377b99ef07062`	rtf-objdata-decoded	RTF \objdata at offset 0x2713A	2632 bytes
`objdata_02_off000286dd.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x286DD	12297 bytes

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