Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 dfa9b468599a6f03…

MALICIOUS

RTF / .DOC

677.9 KB
MD5: cec569b92c665339f3dcac106f90bdf6 SHA-1: 0589ff26a0b5822b257bf42f404de3a3c8ddaf6b SHA-256: dfa9b468599a6f0321634c4007388ab412a416e1ec2a8945910cb22928b9b743
80 Risk Score

Malware Insights

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

The sample is an RTF document containing OLE object data and an \objupdate directive, indicating it's designed to activate embedded objects. The document body contains a lure related to financial auditing and explicitly instructs the user to 'click Enable editing from the yellow bar above,' which is a common technique to bypass macro security settings. This suggests the document's primary purpose is to trick the user into enabling content that will likely download and execute a secondary payload.

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_off0000b23d.bin
3ae0298a2480b5561d6aec2e5f4e4fe0a49206f83fe6b7a01f459238e91e37ca
rtf-objdata-decoded RTF \objdata at offset 0xB23D 4242 bytes