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

Static analysis result for SHA-256 e5e9bfcb2c676763…

MALICIOUS

Office (OLE) / .PPT

76.0 KB Created: 2022-01-24 20:38:16 Authoring application: Microsoft Office PowerPoint
MD5: ba845091d93916ae563f865aa36be0ab SHA-1: 6f2c2f2ad214ac69d0584e766f54d26069de0533 SHA-256: e5e9bfcb2c67676365bd807955b1213271dda93bf65d645f03cbd1eae1f284bd
200 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell

The file is a PowerPoint presentation containing a VBA macro that is automatically executed upon opening (Auto_Open). The macro utilizes a Shell() call, indicating an attempt to execute an external command. The script concatenates several strings to form a command, which is then executed. This suggests the macro's purpose is to download and execute a second-stage payload. The specific command constructed is not fully resolvable due to obfuscation and missing variables, but the presence of the Shell() call and Auto_Open macro are strong indicators of malicious intent.

Heuristics 5

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open macro
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
16677316a673d2ba207ce96a5eb5e2ab965a3708d7b3e3c11b9f1621eb516f99
vba-macro oletools.olevba.extract_macros (decoded VBA source) 1761 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.