Office (OLE) / .PPT malware analysis — malicious · c1110237231589eb

MALICIOUS

Office (OLE) / .PPT

707.5 KB Created: 2021-02-18 23:25:13 Authoring application: Microsoft Office PowerPoint

MD5: 1622576dd5cc993ae42f5c35b4b9ed2f SHA-1: 6071d99ea546e6d74656bf8114bcd7a663eb84ba SHA-256: c1110237231589eb7cb435f52783b0eb917baca45b075e8f78d5b78a0fe66688

400 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.003 Windows Command Shell T1218.011 System Binary Proxy Execution: Rundll32 T1071.001 Web Protocols: HTTP

The sample contains VBA macros, specifically an Auto_Open macro, which is designed to execute code upon opening. Heuristics indicate the use of Shell() and cmd.exe, along with a reference to WriteProcessMemory, suggesting the macro attempts to download and execute a secondary payload. The presence of mshta.exe and the general pattern point towards a downloader or initial access stage. No specific family could be identified.

Heuristics 10

Reference to WriteProcessMemory API critical SC_STR_WRITEPROCESSMEMORY

Reference to WriteProcessMemory API
Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
LOLBin reference in VBA critical OLE_VBA_LOLBIN

LOLBin reference in VBA
Reference to mshta.exe high SC_STR_MSHTA

Reference to mshta.exe
Auto_Open macro high OLE_VBA_AUTO

Auto_Open macro
cmd.exe reference in VBA high OLE_VBA_CMD

cmd.exe reference in VBA
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
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://1230948%1230948@j.mp/

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `74d38a86af1bc9d0acf6d5a94075b5a6e42aa098b7fc7936379fa916d6af3cc8`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	455 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 shell/COM execution token(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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