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Windows Analysis Report
1Klocu2k7B

Overview

General Information

Sample Name:1Klocu2k7B (renamed file extension from none to dll)
Analysis ID:626501
MD5:ce75ec6dff9fca7fd1c20269811e7cd6
SHA1:dce479a4927227ba78dd6bd876b60abc7c0b5acd
SHA256:cb5d6edc7f65880cb51cd99d81dffa44dc801150bd4c27cf01749a305c26285b
Tags:exetrojan
Infos:

Detection

Emotet
Score:84
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
Yara detected Emotet
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
Query firmware table information (likely to detect VMs)
Changes security center settings (notifications, updates, antivirus, firewall)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Queries the volume information (name, serial number etc) of a device
One or more processes crash
Contains functionality to check if a debugger is running (IsDebuggerPresent)
Contains functionality to query locales information (e.g. system language)
Deletes files inside the Windows folder
May sleep (evasive loops) to hinder dynamic analysis
Checks if Antivirus/Antispyware/Firewall program is installed (via WMI)
Uses code obfuscation techniques (call, push, ret)
Creates files inside the system directory
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Found evasive API chain (may stop execution after checking a module file name)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to enumerate running services
Contains functionality to dynamically determine API calls
HTTP GET or POST without a user agent
IP address seen in connection with other malware
AV process strings found (often used to terminate AV products)
PE file contains an invalid checksum
Tries to load missing DLLs
Drops PE files to the windows directory (C:\Windows)
Checks if the current process is being debugged
Registers a DLL
Queries disk information (often used to detect virtual machines)
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • loaddll64.exe (PID: 4800 cmdline: loaddll64.exe "C:\Users\user\Desktop\1Klocu2k7B.dll" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA)
    • cmd.exe (PID: 400 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\1Klocu2k7B.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
      • rundll32.exe (PID: 3280 cmdline: rundll32.exe "C:\Users\user\Desktop\1Klocu2k7B.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A)
    • regsvr32.exe (PID: 5276 cmdline: regsvr32.exe /s C:\Users\user\Desktop\1Klocu2k7B.dll MD5: D78B75FC68247E8A63ACBA846182740E)
      • regsvr32.exe (PID: 1864 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\JRkpZLNCkFz\TYmfFCbFTVEkATZ.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • rundll32.exe (PID: 5104 cmdline: rundll32.exe C:\Users\user\Desktop\1Klocu2k7B.dll,DllRegisterServer MD5: 73C519F050C20580F8A62C849D49215A)
    • rundll32.exe (PID: 992 cmdline: rundll32.exe C:\Users\user\Desktop\1Klocu2k7B.dll,DllUnregisterServer MD5: 73C519F050C20580F8A62C849D49215A)
      • WerFault.exe (PID: 4800 cmdline: C:\Windows\system32\WerFault.exe -u -p 992 -s 316 MD5: 2AFFE478D86272288BBEF5A00BBEF6A0)
  • svchost.exe (PID: 4576 cmdline: C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 2400 cmdline: c:\windows\system32\svchost.exe -k localservice -p -s CDPSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6104 cmdline: c:\windows\system32\svchost.exe -k networkservice -p -s DoSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 3700 cmdline: C:\Windows\System32\svchost.exe -k NetworkService -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • SgrmBroker.exe (PID: 1972 cmdline: C:\Windows\system32\SgrmBroker.exe MD5: D3170A3F3A9626597EEE1888686E3EA6)
  • svchost.exe (PID: 1292 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 2508 cmdline: c:\windows\system32\svchost.exe -k localservicenetworkrestricted -p -s wscsvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
    • MpCmdRun.exe (PID: 7144 cmdline: "C:\Program Files\Windows Defender\mpcmdrun.exe" -wdenable MD5: A267555174BFA53844371226F482B86B)
      • conhost.exe (PID: 7164 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • svchost.exe (PID: 6664 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6856 cmdline: C:\Windows\system32\svchost.exe -k wusvcs -p -s WaaSMedicSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 4968 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 3292 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 4656 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • cleanup
No configs have been found
SourceRuleDescriptionAuthorStrings
00000003.00000002.298205207.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
    00000007.00000002.808360106.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
      00000006.00000002.329868359.000001F1CBE10000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
        00000007.00000002.808194532.0000000002490000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
          00000003.00000002.298619833.000001FDEC700000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
            Click to see the 9 entries
            SourceRuleDescriptionAuthorStrings
            4.2.rundll32.exe.1e219be0000.1.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
              6.0.rundll32.exe.1f1cbe10000.4.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                7.2.regsvr32.exe.2490000.1.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                  6.0.rundll32.exe.1f1cbe10000.4.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                    4.2.rundll32.exe.1e219be0000.1.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                      Click to see the 9 entries
                      No Sigma rule has matched
                      No Snort rule has matched

                      Click to jump to signature section

                      Show All Signature Results

                      AV Detection

                      barindex
                      Source: 1Klocu2k7B.dllVirustotal: Detection: 31%Perma Link
                      Source: https://23.239.0.12/&Avira URL Cloud: Label: malware