RTF malware analysis — malicious · 219075682d10748a

MALICIOUS

RTF

229.3 KB Created: 2019-12-08 22:24:00

MD5: c2f5acb4dbb10cbae38a108ea7cbfe9f SHA-1: bc7598c239b1afb572c945b4d52a417403efc8e2 SHA-256: 219075682d10748a701b56a5862b73273ff2d089410cede70215488d4492bbe6

80 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains multiple OLE objects, with one specifically triggering an objupdate directive. This suggests an attempt to exploit vulnerabilities or execute embedded code upon opening. While the specific payload or exploit is not directly evident from the static analysis, the presence of these OLE objects strongly indicates a malicious intent, likely for initial access.

Heuristics 4

\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
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/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off000087f7.bin` `38af583621f0e25f776571c9c80be877b498014423d04e7d5f7300b14d542ccc`	rtf-objdata-decoded	RTF \objdata at offset 0x87F7	15892 bytes

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