Sagent — Office (OOXML) / .XLSM malware analysis

Static analysis result for SHA-256 a56c4971d725640f…

MALICIOUS

Office (OOXML) / .XLSM

116.1 KB
MD5: 9bb0e6531779e0bb3474eaa88afb1bf1 SHA-1: b90aabb33cb9139f58923930615d999a81cbe0cd SHA-256: a56c4971d725640fe582ff4f884612d1a59b18d60206099a9c8099168a3c446e
220 Risk Score

Malware Insights

Sagent · confidence 95%

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

The file is an XLSM document containing VBA macros. The macros execute a PowerShell command that downloads a file from 'http://ewpoatk-71.cf/wp-admin/import/sql/reqrm.exe' and saves it as 'C:\Users\Public\ayjrnayez.exe', then executes the downloaded file. ClamAV detected this file as 'Xls.Malware.Sagent-10035294-0'.

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://ewpoatk-71.cf/wp-admin/import/sql/reqrm.exe

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
a932ec31432dcd3b662abddb37eaa8ce429269c1307d87937beb8983897c9d84		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 1310 bytes
vbaProject_00.bin
e3c69faf1bec2f9f2387e8091fd07b76ad619387a4e628cac811eed1a9f6324a		 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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