Office (OLE) / .PPT malware analysis — malicious · f81e70dd7eb0fa56

MALICIOUS

Office (OLE) / .PPT

63.5 KB Created: 2021-03-14 23:15:17 Authoring application: Microsoft Office PowerPoint

MD5: 843d260163d0143c4feef0fa3c54e63e SHA-1: 5b3df2d725883705d64d86593f8310241922a6e9 SHA-256: f81e70dd7eb0fa56a4c392c00f3552857a39b53222f0def135bf57c4cc0ef1d2

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1218.005 System Binary Proxy Execution: Mshta

The sample is a PowerPoint file containing VBA macros. A critical heuristic firing indicates the presence of a Shell() call within an Auto_Open macro, which is also flagged as an auto-execution with execution tokens. This suggests the macro is designed to run automatically upon opening the presentation. The presence of a reference to mshta.exe and a visible LOLBin command execution instruction further supports that the macro likely uses mshta.exe to download and execute a second-stage payload from the embedded URL. The document body content does not provide further clues to the specific lure.

Heuristics 8

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Reference to mshta.exe high SC_STR_MSHTA

Reference to mshta.exe
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.
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
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
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 https://%6786d78asd6786d78asd%6786d78asd%6786d78asd@j.mp/dbahadddwdwda

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `e2a95a5861ad31a9d4316b696eb577e1dec1fc2f887155080f1b7cc0e1ebb4b5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	718 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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