AgentTesla — Office (OLE) / .XLS malware analysis

Static analysis result for SHA-256 4e9afd99ca926d6e…

MALICIOUS

Office (OLE) / .XLS

31.5 KB Created: 2023-10-24 04:39:00 Authoring application: Microsoft Excel First seen: 2023-10-25
MD5: 27c6820bfb42d5bdcafeaa349058fc62 SHA-1: 168ae81facecc0834d94d78e0bd3263536580629 SHA-256: 4e9afd99ca926d6e8641bc39abe91395d6aa948e3ba07e19e93818844232fcc4
222 Risk Score

Malware Insights

AgentTesla · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1059.003 Windows Command Shell T1105 Ingress Tool Transfer

The critical heuristic OLE_VBA_SHELL indicates the presence of a Shell() call within the VBA macros. The Auto_Open macro is present and configured to execute this shell command. The script decodes a PowerShell command that downloads a second-stage executable from 'https://www.gyokeritata.hu/agrooter/RFQ/Order.exe' and saves it as 'P.Order2.exe', then executes it. This behavior is consistent with AgentTesla, a known information-stealer.

Heuristics 6

  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • ClamAV: Win.Dropper.AgentTesla-9969002-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Dropper.AgentTesla-9969002-0
  • Auto_Open macro high OLE_VBA_AUTO
    Auto_Open 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
  • Suspicious extracted artifact info 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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
ce388f83e72a78f909c12a2a0265e2ffce1532875763359460c5039dea7537ef		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1447 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 long base64-like blob(s).

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