Office (OLE) / .PPT malware analysis — malicious · 0ee03cc5f9b8111e

MALICIOUS

Office (OLE) / .PPT

69.5 KB Created: 2021-04-06 09:40:07 Authoring application: Microsoft Office PowerPoint

MD5: 8b601d974e8316f43171f0c9d62f806b SHA-1: b6e9b512573dd3b14ce44b7efc5f70a00cd114a4 SHA-256: 0ee03cc5f9b8111e270aaf8a7bd92568e6604efdfda8d124d67892fa5d4690cf

200 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PowerPoint file containing obfuscated VBA macros. The Auto_Close macro is designed to execute a payload. The script reconstructs the URL "http://asdimawxiqodpwoqwemweklwekjj.mp/" and uses GetObject to execute a command, likely downloading and running a second-stage payload. The use of VBA macros and the Auto_Close execution suggests a common phishing attachment delivery method.

Heuristics 5

Dangerous API name reassembled from split string literals critical OLE_VBA_SPLIT_KEYWORD_OBFUSCATION

VBA concatenates short string literals that reassemble a dangerous API/ProgID/LOLBin name (e.g. Scripting.FileSystemObject, WScript.Shell, powershell, URLDownloadToFile) which appears in no single literal. Splitting an API name across string concatenation is done only to evade keyword scanning.
Auto_Close macro high OLE_VBA_AUTOCLOSE

Auto_Close macro
GetObject call high OLE_VBA_GETOBJ

GetObject 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `9e75a24f497e8085f7f48a8d68113a76ba5af8800675faa7a907b194030d8b66`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1764 bytes

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