Malicious Office (OLE) / .EXE — malware analysis report

Static analysis result for SHA-256 e7add1d6dae3123c…

MALICIOUS

Office (OLE) / .EXE

55.0 KB Created: 1980-01-11 05:33:00 Authoring application: Microsoft Word 8.0
MD5: adde27d1cda6429462197116fdbbd727 SHA-1: 016c0d18a08355b4ebf714f37d2a0144e25ec06b SHA-256: e7add1d6dae3123c78c390121a28846fc738147211feb247a66481b1cb5787e6
320 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The file contains VBA macros, including a Document_Open macro, which is a common technique for initial execution. The critical heuristic 'OLE_VBA_SHELL' indicates the use of the Shell() function, likely to download and execute a secondary payload. ClamAV detections for 'Win.Trojan.KillCMOS-13' and 'Win.Trojan.wmvg-1' on an extracted artifact further confirm its malicious nature. The document body appears to be heavily corrupted or obfuscated, providing no clear user-facing lure.

Heuristics 7

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Win.Trojan.KillCMOS-13 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.KillCMOS-13
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
69a63c4abbbd77b99cea59c1a64f5d73e1f7b44c43eab133d630abd28004c5e5		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19756 bytes
Detection
ClamAV: Win.Trojan.wmvg-1
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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