Office (OLE) / .PPT malware analysis — malicious · 256f31588e790b06

MALICIOUS

Office (OLE) / .PPT

67.0 KB Created: 2021-09-05 21:30:57 Authoring application: Microsoft Office PowerPoint

MD5: 72fbb1892420f4727710ea0f7a324834 SHA-1: 8ba2660356a67a53ad6c64049c27f26dcc1ec6ef SHA-256: 256f31588e790b06bb68a82d8e3a8703481e0a2da27c3527f5696d4ca23f09fb

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The sample is a PowerPoint file containing a VBA macro. The Auto_close macro is configured to execute ShellExecute, which is used to launch 'mshta'. The URL 'https://www.bitly.com/wqyhdvasdgvyeuiaohbdjad' is constructed from concatenated strings and is likely the location of the second-stage payload. The use of Auto_close and ShellExecute indicates a malicious intent to download and execute arbitrary code upon opening the document.

Heuristics 6

Reference to ShellExecute API high SC_STR_SHELLEXEC

Reference to ShellExecute API
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code
Suspicious extracted artifact medium 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `a585f922a182773bf8576009923381bb80dba899c54e1d89bd828dd6c334a3ee`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1514 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s).

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