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

Static analysis result for SHA-256 07a0d67fc961bf41…

MALICIOUS

Office (OLE) / .XLS

63.0 KB Created: 2022-01-26 10:26:05
MD5: fd497df5fa4613a0e671bb346d3a4357 SHA-1: b3ca60457dfea479858049af3d4e59db441a3ac0 SHA-256: 07a0d67fc961bf41ec3b272876301d67391306cdd5b03b6207b90f2f3f6328f4
288 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1105 Ingress Tool Transfer

The VBA macro contains references to URLDownloadToFile, LoadLibrary, GetProcAddress, and CreateProcess APIs, indicating its intent to download and execute a secondary payload. The reconstructed URL 'http://10.0.1.150:8000/TE MP' is the likely source of this payload. The use of these APIs strongly suggests a downloader or droppper functionality.

Heuristics 8

  • Reference to URLDownloadToFile API critical SC_STR_URLDOWNLOAD
    Reference to URLDownloadToFile API
  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • Reference to CreateProcess API high SC_STR_CREATEPROCESS
    Reference to CreateProcess API
  • Reference to LoadLibrary API high SC_STR_LOADLIBRARY
    Reference to LoadLibrary API
  • Reference to GetProcAddress API high SC_STR_GETPROCADDRESS
    Reference to GetProcAddress API
  • Reference to VirtualProtect API medium SC_STR_VIRTUALPROTECT
    Reference to VirtualProtect API
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d22339466d0726b1999943667b2bd707f47d5009600021f3e4bc664b4d4df87b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6067 bytes

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