RTF / .DOC malware analysis — malicious · e24f888bfb35c41c

MALICIOUS

RTF / .DOC

536.4 KB

MD5: 3ffbed6d4000690f71821c193cd94d38 SHA-1: a487f191fb5b4a0ea26904187c0a5380aaa74552 SHA-256: e24f888bfb35c41c6a419b96708dc191dae06db6f12f4ac09ecc6f581fcba39e

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 activate upon opening. The 'SE_ENABLE_LURE' heuristic indicates the document likely contains instructions to enable macros or content, a common tactic for malware droppers. No scripts were extracted, and the primary indicators point to a lure-based delivery mechanism for an embedded OLE object.

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_off00000bb0.bin` `39c4cab8bf2c1408aee6566b83eeb3c79cab2e0d4a2431e051d839de0c3d7498`	rtf-objdata-decoded	RTF \objdata at offset 0xBB0	171550 bytes
`objdata_01_off00057e29.bin` `9d9bc825f2fa5e0ed8db7dce6823e199ad9c775873472d42887214589f205470`	rtf-objdata-decoded	RTF \objdata at offset 0x57E29	2632 bytes
`objdata_02_off000593cc.bin` `44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037`	rtf-objdata-decoded	RTF \objdata at offset 0x593CC	12297 bytes

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