Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 3e9d09dbdad7f5e9…

MALICIOUS

RTF / .DOC

281.4 KB First seen: 2024-05-21
MD5: 2cb8529988be2a95943fb66e32343a5f SHA-1: 42a1f8769bd98bd15e491f48421b58ca48797e2a SHA-256: 3e9d09dbdad7f5e9d7245630fbd7208ae2396b62221b84558eaca1d0d9fe1f71
80 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious Link: Malicious File T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1059 Command and Scripting Interpreter T1059.005 Command and Scripting Interpreter: Visual Basic

The RTF document contains OLE object data and an \objupdate directive, indicating it is designed to activate embedded objects. The SE_ENABLE_LURE heuristic confirms the document instructs the user to enable editing, a common tactic for macro-based malware delivery. The document body discusses financial audits to appear legitimate, masking the malicious intent of executing embedded content.

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 1 \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_off00016fca.bin
d10dfb342ee9bcc5f60a956d72caf4c8d9dee3b0496ec59116d0910457399d11
rtf-objdata-decoded RTF \objdata at offset 0x16FCA 1571 bytes