Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 7d3f8ce1123f402c…

MALICIOUS

RTF / .DOC

7.5 KB First seen: 2022-09-07
MD5: ca71fd81c0ff3d7c6a7f1076cc1dd5c6 SHA-1: 54a43af066e5dffd9fe3a1da46151bc93f4460b5 SHA-256: 7d3f8ce1123f402cd7cb880ca4e14067bbf6ce07c32b587c785c7b34c9a46bc6
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing Link

The RTF document contains OLE object data and an instruction to activate it, indicating it's designed to execute embedded content. The presence of a "Enable editing" lure in the document body strongly suggests a malicious intent to bypass security measures and deliver a payload. The embedded artifacts and heuristics point towards a downloader or exploit delivery mechanism.

Heuristics 3

  • \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 2 \objdata section(s) — embedded OLE objects
  • 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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off0000060d.bin
e585b8e7f846fdd736bb4fc16e39ec55b2b188ade64d234fbf07a5668c79054d
rtf-objdata-decoded RTF \objdata at offset 0x60D 2199 bytes