Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 e98f12057ba032f1…

MALICIOUS

RTF / .DOC

13.4 KB First seen: 2022-09-01
MD5: 0cfaa7fd1d997a9d61a9152c662ee219 SHA-1: c2b7fd40a6c0a3f159bbca3fbcf8273dbd607e07 SHA-256: e98f12057ba032f1bd8beefa88cfdc19d4d60ec8841501ec70463cda13023387
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 via Service

The sample is an RTF document that contains OLE object data and an instruction to enable editing, indicative of a lure to bypass security measures. The presence of `SE_ENABLE_LURE` heuristic firing confirms the document's intent to trick the user into enabling malicious content. The `RTF_OBJUPDATE` heuristic suggests that the embedded OLE object is intended to be activated.

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_off00001f8c.bin
3c1d7890fd230ec2b14fcdc0816fd605c7f9f9a816dd015002cead65b37584b1
rtf-objdata-decoded RTF \objdata at offset 0x1F8C 2030 bytes