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

Static analysis result for SHA-256 c10f00d6a5ff3913…

MALICIOUS

Office (OOXML) / .XLSM

185.6 KB
MD5: ee9501672e245500c2aad8e720cd3692 SHA-1: bacc8f58565d5df16e6fec49ba4b274ccf850642 SHA-256: c10f00d6a5ff391315472a0788adc9d23b482b95c3596d2ca596e00812816b9d
220 Risk Score

Malware Insights

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

The document contains VBA macros that execute a PowerShell command. This command downloads an executable from a suspicious URL and then executes it. The critical ClamAV detections further confirm the malicious nature of the file. The PowerShell script is designed to download and execute a second-stage payload from the embedded URL.

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://mirchvdo.xyz/wp-content/plugins/fighter/SG/RF-41023.exe

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
49794bbed991f964df6df1ec52ceff80b37f1744ba485f953e4c13e7a65fd7da		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1890 bytes
vbaProject_00.bin
82472b0baedcd4851666703758622fba9f71bed3e4076335a12d74640838e4a9		 vba-project OOXML VBA project: xl/vbaProject.bin 5632 bytes
Detection
ClamAV: Xls.Malware.Sagent-10035294-0
Obfuscation or payload: unlikely

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