Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 b0e5975e66d631a5…

MALICIOUS

Office (OLE) / .DOC

1.07 MB Created: 2021-12-07 15:54:00 Authoring application: Microsoft Office Word
MD5: 5ac85783cc440485e342243217f9e065 SHA-1: 4f2eb422836264e9bfa2beffc00ea36351f16399 SHA-256: b0e5975e66d631a5666a92a177680ba2f6555708305347ebe4aee84914244219
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.005 Visual Basic

The sample is a malicious Office document containing VBA macros, specifically an AutoOpen macro, designed to execute upon opening. The document body presents a seemingly legitimate progress report to trick the user into enabling macros, a common lure. The VBA script attempts to write to files in a suspicious directory 'c:\.intel\.rem\' and uses obfuscated strings, indicating it likely downloads and executes a second-stage payload. The presence of a phone number in the document body suggests a potential callback phishing or tech-support scam element.

Heuristics 4

  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
88e5155d8bbbfeff5fa6115e0641cac60fc6b8469707424006c44a36467d6346
vba-macro oletools.olevba.extract_macros (decoded VBA source) 16094 bytes