Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c9d63df38d0bcee8…

MALICIOUS

Office (OLE)

217.0 KB Created: 1996-12-17 01:32:42 Authoring application: Microsoft Excel First seen: 2021-02-23
MD5: 0e2b10015fe52b7ea77a213f0c330557 SHA-1: 02a0b7d46783bc22e280674bac34c379c5521f54 SHA-256: c9d63df38d0bcee81ecd45e68a294fb59ff52a884bccd1b47dc23d84b7412ff5
82 Risk Score

Heuristics 3

  • MSCOMCTL.ListView — CVE-2012-0158 high CVE likely CVE_2012_0158
    MSCOMCTL.ListView — CVE-2012-0158
  • OLE document has large unaccounted-for region high OLE_SLACK_ANOMALY
    OLE file is 222,208 bytes but its declared streams total only 118,077 bytes — 104,131 bytes (47%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
  • VBA project contains no executable statements info OLE_VBA_MACROS
    Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 365 bytes
SHA-256: 7ca205b9cd4d4e3fe60da94fb466b282176a6ce6ff2141c56ec53e9e5bac8db2
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Sheet1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Attribute VB_Control = "ListView2, 1, 1, MSComctlLib, ListView"

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