Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e321bf2d0e1544aa…

MALICIOUS

RTF / .DOC

1.47 MB
MD5: 2943df6e93bb2b7b657b232272f040a0 SHA-1: c28b7b97fed286202a1baf8747ef986b6bd10f88 SHA-256: e321bf2d0e1544aa689ee8c732bc3c16a1f67f661141cbb15be54397ff62cf63
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204 User Execution T1204.002 Malicious File T1566 Phishing T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The file is an RTF document containing embedded OLE objects, indicated by the RTF_OBJDATA heuristic. The RTF_OBJAUTLINK and RTF_OBJUPDATE heuristics suggest that these objects are automatically activated upon opening. The SE_ENABLE_LURE heuristic confirms that the document contains text prompting the user to 'Enable editing', a common social engineering tactic to bypass macro security. This combination strongly suggests the document is designed to exploit user interaction to download and execute a secondary payload.

Heuristics 4

  • 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 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_off001589bb.bin
9a318ddebad2e5382176eb88046c47414310bbea65eae943359e569f37b0ff35
rtf-objdata-decoded RTF \objdata at offset 0x1589BB 1981 bytes