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

Static analysis result for SHA-256 a62e4e1d21bdc64e…

MALICIOUS

Office (OOXML) / .XLSM

51.9 KB
MD5: 51117048f60112083153e2037404296a SHA-1: 7f10ababbbae43c19e3fc8372149295d080e6664 SHA-256: a62e4e1d21bdc64eea17d8bbc4ab5e6c48dc57abbb470322c3357abdef15341f
220 Risk Score

Malware Insights

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

The file is an XLSM document containing VBA macros. The document body reveals a PowerShell command that downloads an executable from 'http://185.29.11.32/qq.exe' and saves it as 'C:\Users\Public\Videos\ntlglrgou.exe', then executes it. This indicates a downloader or droppper functionality. ClamAV detections further confirm the malicious nature of the file.

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://185.29.11.32/qq.exe

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
f7701314402abeac59b427fc46eec04c0b7dd95e07c6a3e7f716a2d8adddb234		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1310 bytes
vbaProject_00.bin
96b45a318119c9a0a0f502fb2b1b5b78ee3b3e11a9635c81032268ba9b2c09c0		 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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