Malicious Office (OOXML) / .XLSM — malware analysis report

Static analysis result for SHA-256 2d74286e3c788440…

MALICIOUS

Office (OOXML) / .XLSM

21.6 KB
MD5: 1c6acfad45e467f2f2ca0807856c9102 SHA-1: 76bac3cb898141838056171a9e7b0e8839317f73 SHA-256: 2d74286e3c7884408f1c6978e9c6d6f3d22f5cfb4f80a496c9eee817cd4e64d5
220 Risk Score

Malware Insights

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

The sample is an XLSM file containing VBA macros. The document body reveals a PowerShell command designed to download an executable from 'http://95.214.8.54/btl.exe' and then execute it. This indicates a downloader or droppper functionality. The presence of VBA macros and the PowerShell execution strongly suggest malicious intent.

Heuristics 6

  • ClamAV: Xls.Malware.Sagent-10035294-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Malware.Sagent-10035294-0
  • 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.
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Visible LOLBin command execution instruction high SE_LOLBIN_RUN_COMMAND
    Document contains instructions or visible command text involving Windows script/execution tools such as PowerShell, mshta, cmd, rundll32, or regsvr32
  • VBA project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://95.214.8.54/btl.exe

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7d5f2415987a3662e6b8bb9b25976a217ce674cf5e57347535dbd4bd400d5377		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1310 bytes
vbaProject_00.bin
03119ad4485efaad2e4c48e12cb580ab5c3f72a0da78523b2e4bc82a1485f303		 vba-project OOXML VBA project: xl/vbaProject.bin 5120 bytes
Detection
ClamAV: Xls.Malware.Sagent-10035294-0
Obfuscation or payload: unlikely

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