Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 a2e1e2aa9a9dfe90…

MALICIOUS

RTF / .DOC

229.3 KB
MD5: cd0fda60f72026cb75ed62c8a02ecfa4 SHA-1: 7ecbeabe01522fb93bd3b2a67aab44a0a56cbaa7 SHA-256: a2e1e2aa9a9dfe90fc5cf59ddca314c05e8a9541030682760ba1d421051963e5
180 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 multiple OLE objects, including automatically linked and updated objects, which are commonly used to deliver malicious payloads. The presence of the SE_ENABLE_LURE heuristic indicates the document likely instructs the user to enable macros or content, a typical social engineering tactic to bypass security measures. The embedded OLE objects suggest an attempt to execute code or download further stages of an attack.

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.

FilenameKindSourceSize
objdata_00_off00000965.bin
fa9cef6c9a24614b64b4f2024efd614fef749df42af0f91e68671c6a21020da5
rtf-objdata-decoded RTF \objdata at offset 0x965 20626 bytes
objdata_01_off0000b19c.bin
18cff8ef194415d33763880bf64011d23305e4b9143b76244b89e1c53b70a0d5
rtf-objdata-decoded RTF \objdata at offset 0xB19C 2632 bytes
objdata_02_off0000c73f.bin
44deae4627fee3c44f54d5bd10477ec2e17f4c08135f08e2417832e36d10d037
rtf-objdata-decoded RTF \objdata at offset 0xC73F 12297 bytes