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Analysis Report coreupdater.exe

Overview

General Information

Sample Name:coreupdater.exe
Analysis ID:398583
MD5:eed41b4500e473f97c50c7385ef5e374
SHA1:fd153c66386ca93ec9993d66a84d6f0d129a3a5c
SHA256:10f3b92002bb98467334161cf85d0b1730851f9256f83c27db125e9a0c1cfda6
Infos:

Most interesting Screenshot:

Detection

Metasploit
Score:68
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected Metasploit Payload
Machine Learning detection for sample
Antivirus or Machine Learning detection for unpacked file
Entry point lies outside standard sections
IP address seen in connection with other malware
PE file contains an invalid checksum
PE file contains sections with non-standard names
Program does not show much activity (idle)

Classification

Startup

  • System is w10x64
  • coreupdater.exe (PID: 6948 cmdline: 'C:\Users\user\Desktop\coreupdater.exe' MD5: EED41B4500E473F97C50C7385EF5E374)
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Initial Sample

SourceRuleDescriptionAuthorStrings
coreupdater.exeJoeSecurity_MetasploitPayload_2Yara detected Metasploit PayloadJoe Security

    Sigma Overview

    No Sigma rule has matched

    Signature Overview

    Click to jump to signature section

    Show All Signature Results

    AV Detection:

    barindex
    Antivirus / Scanner detection for submitted sampleShow sources
    Source: coreupdater.exeAvira: detected
    Multi AV Scanner detection for submitted fileShow sources
    Source: coreupdater.exeVirustotal: Detection: 68%Perma Link
    Source: coreupdater.exeReversingLabs: Detection: 86%
    Machine Learning detection for sampleShow sources
    Source: coreupdater.exeJoe Sandbox ML: detected
    Source: 0.2.coreupdater.exe.140000000.0.unpackAvira: Label: TR/Crypt.XPACK.Gen7
    Source: 0.0.coreupdater.exe.140000000.0.unpackAvira: Label: TR/Crypt.XPACK.Gen7
    Source: Joe Sandbox ViewIP Address: 203.78.103.109 203.78.103.109
    Source: unknownTCP traffic detected without corresponding DNS query: 203.78.103.109
    Source: unknownTCP traffic detected without corresponding DNS query: 203.78.103.109
    Source: unknownTCP traffic detected without corresponding DNS query: 203.78.103.109
    Source: unknownTCP traffic detected without corresponding DNS query: 203.78.103.109
    Source: C:\Users\user\Desktop\coreupdater.exeCode function: 0_2_00000001400040FD LoadLibraryA,WSAStartup,WSASocketA,connect,recv,closesocket,0_2_00000001400040FD
    Source: unknownNetwork traffic detected: HTTP traffic on port 49726 -> 443
    Source: unknownNetwork traffic detected: HTTP traffic on port 49769 -> 443
    Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 49726
    Source: unknownNetwork traffic detected: HTTP traffic on port 443 -> 49769
    Source: classification engineClassification label: mal68.troj.winEXE@1/0@0/1
    Source: C:\Users\user\Desktop\coreupdater.exeKey opened: HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
    Source: coreupdater.exeVirustotal: Detection: 68%
    Source: coreupdater.exeReversingLabs: Detection: 86%
    Source: coreupdater.exeStatic PE information: Image base 0x140000000 > 0x60000000
    Source: initial sampleStatic PE information: section where entry point is pointing to: .lhru
    Source: coreupdater.exeStatic PE information: real checksum: 0x8596 should be: 0x874e
    Source: coreupdater.exeStatic PE information: section name: .lhru
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected
    Source: coreupdater.exe, 00000000.00000002.902871142.000000000049B000.00000004.00000020.sdmpBinary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll
    Source: all processesThread injection, dropped files, key value created, disk infection and DNS query: no activity detected

    Remote Access Functionality:

    barindex
    Yara detected Metasploit PayloadShow sources
    Source: Yara matchFile source: coreupdater.exe, type: SAMPLE

    Mitre Att&ck Matrix

    Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
    Valid AccountsWindows Management InstrumentationPath InterceptionPath InterceptionSoftware Packing1OS Credential DumpingSecurity Software Discovery1Remote ServicesData from Local SystemExfiltration Over Other Network MediumEncrypted Channel2Eavesdrop on Insecure Network CommunicationRemotely Track Device Without AuthorizationModify System Partition
    Default AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsRootkitLSASS MemorySystem Information Discovery1Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothApplication Layer Protocol1Exploit SS7 to Redirect Phone Calls/SMSRemotely Wipe Data Without AuthorizationDevice Lockout
    Domain AccountsAt (Linux)Logon Script (Windows)Logon Script (Windows)Obfuscated Files or InformationSecurity Account ManagerQuery RegistrySMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationIngress Tool Transfer1Exploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data

    Behavior Graph

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    Legend:

    • Process
    • Signature
    • Created File
    • DNS/IP Info
    • Is Dropped
    • Is Windows Process
    • Number of created Registry Values
    • Number of created Files
    • Visual Basic
    • Delphi
    • Java
    • .Net C# or VB.NET
    • C, C++ or other language
    • Is malicious
    • Internet

    Screenshots

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