Office (OLE) / .PPT malware analysis — malicious · 7b68182ff4843b3f

MALICIOUS

Office (OLE) / .PPT

68.5 KB Created: 2021-06-23 21:14:32 Authoring application: Microsoft Office PowerPoint

MD5: b3d0db80c67a9f2e23ee273aea645e29 SHA-1: 251aa8ecde2307c9f9167d89c1a89f8685b177d6 SHA-256: 7b68182ff4843b3fb20c299fa3e73fbf0f9a29bf28cad385e04dc756a20e444c

160 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 Command and Scripting Interpreter T1071.001 Application Layer Compromise

The file exhibits several characteristics of macro-based malware. The VBA macros, particularly the `Shell()` call and the `Auto_Close` macro, are commonly used to execute arbitrary code. The script attempts to download a payload from a URL, obfuscated with URL encoding, and then executes that payload using the `Shell()` function. The `Auto_Close` macro further increases the likelihood of delayed execution. The script's function names and variable names are deliberately obfuscated to evade detection.

Heuristics 4

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close 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.
VBA macros detected medium OLE_VBA_MACROS

Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `e9d0c6fefdf4b0771ea74c55cdba35b5adb513805971983bff30d2868e67d782`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	820 bytes

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