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Windows Analysis Report
36yjawe0S4

Overview

General Information

Sample Name:36yjawe0S4 (renamed file extension from none to dll)
Analysis ID:626481
MD5:d682060a95ee129f8bca929c1d22b73a
SHA1:d4ac4cf097185adb3249c4bc5275ed81fd5ee082
SHA256:7ba2e8c8cdcf4ebcccc20a96ab0c6dab4b7dd14ab607c0d9c43fb8f91c982c79
Tags:exetrojan
Infos:

Detection

Emotet
Score:88
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
Multi AV Scanner detection for domain / URL
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
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 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)
Modifies existing windows services
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: 2092 cmdline: loaddll64.exe "C:\Users\user\Desktop\36yjawe0S4.dll" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA)
    • cmd.exe (PID: 5300 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\36yjawe0S4.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
      • rundll32.exe (PID: 2920 cmdline: rundll32.exe "C:\Users\user\Desktop\36yjawe0S4.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A)
        • regsvr32.exe (PID: 5724 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\YCpmlPcQEhLz\SNMvZ.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 4212 cmdline: regsvr32.exe /s C:\Users\user\Desktop\36yjawe0S4.dll MD5: D78B75FC68247E8A63ACBA846182740E)
    • rundll32.exe (PID: 2420 cmdline: rundll32.exe C:\Users\user\Desktop\36yjawe0S4.dll,DllRegisterServer MD5: 73C519F050C20580F8A62C849D49215A)
    • rundll32.exe (PID: 1004 cmdline: rundll32.exe C:\Users\user\Desktop\36yjawe0S4.dll,DllUnregisterServer MD5: 73C519F050C20580F8A62C849D49215A)
  • svchost.exe (PID: 3840 cmdline: C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 5328 cmdline: c:\windows\system32\svchost.exe -k localservice -p -s CDPSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 5904 cmdline: c:\windows\system32\svchost.exe -k networkservice -p -s DoSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 4316 cmdline: C:\Windows\System32\svchost.exe -k NetworkService -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • SgrmBroker.exe (PID: 3556 cmdline: C:\Windows\system32\SgrmBroker.exe MD5: D3170A3F3A9626597EEE1888686E3EA6)
  • svchost.exe (PID: 6076 cmdline: c:\windows\system32\svchost.exe -k localservicenetworkrestricted -p -s wscsvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
    • MpCmdRun.exe (PID: 5952 cmdline: "C:\Program Files\Windows Defender\mpcmdrun.exe" -wdenable MD5: A267555174BFA53844371226F482B86B)
      • conhost.exe (PID: 5272 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • svchost.exe (PID: 6088 cmdline: c:\windows\system32\svchost.exe -k unistacksvcgroup MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 3896 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 4920 cmdline: c:\windows\system32\svchost.exe -k localservice -s W32Time MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • cleanup
No configs have been found
SourceRuleDescriptionAuthorStrings
00000004.00000002.248650311.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
    00000003.00000002.250947484.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
      00000003.00000002.251487935.0000022323800000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
        00000002.00000002.248361732.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
          00000004.00000002.249322458.000001C182840000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
            Click to see the 3 entries
            SourceRuleDescriptionAuthorStrings
            2.2.regsvr32.exe.960000.0.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
              3.2.rundll32.exe.22323800000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                4.2.rundll32.exe.1c182840000.0.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                  6.2.regsvr32.exe.1250000.1.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                    4.2.rundll32.exe.1c182840000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                      Click to see the 3 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: 36yjawe0S4.dllVirustotal: Detection: 36%Perma Link
                      Source: https://23.239.0.12//Avira URL Cloud: Label: malware
                      Source: https://23.239.0.12/hAvira URL Cloud: Label: malware
                      Source: https://23.239.0.12//Virustotal: Detection: 9%Perma Link
                      Source: unknownHTTPS traffic detected: 23.239.0.12:443 -> 192.168.2.4:49714 version: TLS 1.2
                      Source: 36yjawe0S4.dllStatic PE information: DYNAMIC_BASE, NX_COMPAT
                      Source: Binary string: msacm32.pdb source: regsvr32.exe, 00000006.00000002.762578934.0000000000DA4000.00000004.00000010.00020000.00000000.sdmp
                      Source: Binary string: msacm32.pdbGCTL source: regsvr32.exe, 00000006.00000002.762578934.0000000000DA4000.00000004.00000010.00020000.00000000.sdmp
                      Source: C:\Windows\System32\regsvr32.exeCode function: 6_2_000000018000D26C FindFirstFileW,FindNextFileW,FindClose,6_2_00000001800