Loading Joe Sandbox Report ...

Edit tour

Windows Analysis Report
lc4KFeS296

Overview

General Information

Sample Name:lc4KFeS296 (renamed file extension from none to dll)
Analysis ID:626480
MD5:3b2d00898cf67a9cb3eec176d700d8bb
SHA1:1cc8bb45a9900ecfaa4372dad23b58d2a4e5b371
SHA256:96b69b7693636ea4882b665d6668e160743bf6951d112ad4504a05fb3cbddcd0
Tags:exetrojan
Infos:

Detection

Emotet
Score:80
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
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)
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: 6276 cmdline: loaddll64.exe "C:\Users\user\Desktop\lc4KFeS296.dll" MD5: 4E8A40CAD6CCC047914E3A7830A2D8AA)
    • cmd.exe (PID: 6284 cmdline: cmd.exe /C rundll32.exe "C:\Users\user\Desktop\lc4KFeS296.dll",#1 MD5: 4E2ACF4F8A396486AB4268C94A6A245F)
      • rundll32.exe (PID: 6316 cmdline: rundll32.exe "C:\Users\user\Desktop\lc4KFeS296.dll",#1 MD5: 73C519F050C20580F8A62C849D49215A)
        • regsvr32.exe (PID: 6436 cmdline: C:\Windows\system32\regsvr32.exe "C:\Windows\system32\LJYuxyMqHk\HxAOzCvVHW.dll" MD5: D78B75FC68247E8A63ACBA846182740E)
    • regsvr32.exe (PID: 6304 cmdline: regsvr32.exe /s C:\Users\user\Desktop\lc4KFeS296.dll MD5: D78B75FC68247E8A63ACBA846182740E)
    • rundll32.exe (PID: 6324 cmdline: rundll32.exe C:\Users\user\Desktop\lc4KFeS296.dll,DllRegisterServer MD5: 73C519F050C20580F8A62C849D49215A)
    • rundll32.exe (PID: 6488 cmdline: rundll32.exe C:\Users\user\Desktop\lc4KFeS296.dll,DllUnregisterServer MD5: 73C519F050C20580F8A62C849D49215A)
  • svchost.exe (PID: 6836 cmdline: C:\Windows\System32\svchost.exe -k LocalSystemNetworkRestricted -p -s NcbService MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6884 cmdline: c:\windows\system32\svchost.exe -k localservice -p -s CDPSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6948 cmdline: c:\windows\system32\svchost.exe -k networkservice -p -s DoSvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6992 cmdline: C:\Windows\System32\svchost.exe -k NetworkService -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • SgrmBroker.exe (PID: 7068 cmdline: C:\Windows\system32\SgrmBroker.exe MD5: D3170A3F3A9626597EEE1888686E3EA6)
  • svchost.exe (PID: 7092 cmdline: c:\windows\system32\svchost.exe -k localservicenetworkrestricted -p -s wscsvc MD5: 32569E403279B3FD2EDB7EBD036273FA)
    • MpCmdRun.exe (PID: 2508 cmdline: "C:\Program Files\Windows Defender\mpcmdrun.exe" -wdenable MD5: A267555174BFA53844371226F482B86B)
      • conhost.exe (PID: 2560 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • svchost.exe (PID: 5832 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6392 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6156 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p -s BITS MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 6660 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • svchost.exe (PID: 3400 cmdline: C:\Windows\System32\svchost.exe -k netsvcs -p MD5: 32569E403279B3FD2EDB7EBD036273FA)
  • cleanup
No configs have been found
SourceRuleDescriptionAuthorStrings
00000002.00000002.258544740.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
    00000004.00000002.258631971.000002BB141A0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
      00000003.00000002.260759075.000002473DCB0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
        00000003.00000002.259901088.0000000180001000.00000020.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
          00000002.00000002.258165779.00000000013E0000.00000040.00001000.00020000.00000000.sdmpJoeSecurity_Emotet_1Yara detected EmotetJoe Security
            Click to see the 3 entries
            SourceRuleDescriptionAuthorStrings
            3.2.rundll32.exe.2473dcb0000.1.raw.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
              2.2.regsvr32.exe.13e0000.0.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                5.2.regsvr32.exe.2750000.1.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                  4.2.rundll32.exe.2bb141a0000.1.unpackJoeSecurity_Emotet_1Yara detected EmotetJoe Security
                    2.2.regsvr32.exe.13e0000.0.raw.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: lc4KFeS296.dllVirustotal: Detection: 35%Perma Link
                      Source: https://23.239.0.12/;Avira URL Cloud: Label: malware
                      Source: unknownHTTPS traffic detected: 23.239.0.12:443 -> 192.168.2.3:49747 version: TLS 1.2
                      Source: lc4KFeS296.dllStatic PE information: DYNAMIC_BASE, NX_COMPAT
                      Source: Binary string: msacm32.pdb source: regsvr32.exe, 00000005.00000002.776349194.0000000000AC5000.00000004.00000010.00020000.00000000.sdmp
                      Source: Binary string: msacm32.pdbGCTL source: regsvr32.exe, 00000005.00000002.776349194.0000000000AC5000.00000004.00000010.00020000.00000000.sdmp
                      Source: C:\Windows\System32\regsvr32.exeCode function: 5_2_000000018000D26C FindFirstFileW,FindNextFileW,FindClose,5_2_000000018000D26C

                      Networking

                      barindex
                      Source: C:\Windows\System32\regsvr32.exeNetwork Connect: 23.239.0.12 443Jump to behavior
                      Source: Joe Sandbox ViewASN Name: LINODE-APLinodeLLCUS LINODE-APLinodeLLCUS
                      Source: Joe Sandbox ViewJA3 fingerprint: 51c64c77e60f3980eea90869b68c58a8
                      Source: global trafficHTTP traffic detected: GET / HTTP/1.1Cookie: BnJGdmoO=YMx5M7X6APxbH27/JCJHjfHdeQEsyA/V91AX373a+Auv9ux5o4+m2GOn0/3dRQUWfGG8cmZ9leEZ8LCISZJ0HQ8yhrOZbw+cc5gHRjT9obyi58fQg/aQsODeLu19WEWmJLpz/M9qMdXSRhJxP3a2aWDlaeJdv03TYajvW0PRDu72dg9Z3PyOQ9qGOVC/Z/H+yt6lNuwTJln15oiT3JYRmNLk3+OnkCHkmSYeAAZfeGL69a/a1RtqChWiA4pUryjtpWnR2NL6QMDEjCSwXvtPwq2XfErb6IFbi6xCLotqjxRNXKl1Host: 23.239.0.12Connection: Keep-AliveCache-Control: no-cache
                      Source: Joe Sandbox ViewIP Address: 23.239.0.12 23.239.0.12
                      Source: unknownNetwork traffic detected: HTTP traffic on port 49747 -> 443
                      Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 49747
                      Source: unknown