Joe Sandbox Cloud Basic Analysis Report

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Windows Analysis Report
EPAYMENT.exe

Overview

General Information

Sample Name:EPAYMENT.exe
Analysis ID:624181
MD5:9811d64e29ef53e107f9379526cfd338
SHA1:b6e84580f902a0c3d3f77748a2a027c9fe42db68
SHA256:e94bcf64e3affd0a755df05fc1f8c7fba1fb98303e433edff4d98f75d1e4fdf8
Infos:

Detection

GuLoader
Score:88
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Yara detected GuLoader
Initial sample is a PE file and has a suspicious name
Writes to foreign memory regions
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Executable has a suspicious name (potential lure to open the executable)
C2 URLs / IPs found in malware configuration
Uses 32bit PE files
May sleep (evasive loops) to hinder dynamic analysis
Contains functionality to shutdown / reboot the system
Uses code obfuscation techniques (call, push, ret)
PE file contains sections with non-standard names
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
JA3 SSL client fingerprint seen in connection with other malware
Contains functionality to call native functions
Contains functionality to dynamically determine API calls
Found dropped PE file which has not been started or loaded
IP address seen in connection with other malware
Contains functionality for execution timing, often used to detect debuggers
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Sample file is different than original file name gathered from version info
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Checks if the current process is being debugged
PE / OLE file has an invalid certificate
PE file contains more sections than normal
Creates a process in suspended mode (likely to inject code)
Contains functionality for read data from the clipboard

Classification

Process Tree

  • System is w10x64native
  • EPAYMENT.exe (PID: 1976 cmdline: "C:\Users\user\Desktop\EPAYMENT.exe" MD5: 9811D64E29EF53E107F9379526CFD338)
    • CasPol.exe (PID: 2376 cmdline: "C:\Users\user\Desktop\EPAYMENT.exe" MD5: 7BAE06CBE364BB42B8C34FCFB90E3EBD)
    • CasPol.exe (PID: 6908 cmdline: "C:\Users\user\Desktop\EPAYMENT.exe" MD5: 7BAE06CBE364BB42B8C34FCFB90E3EBD)
      • conhost.exe (PID: 7164 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: 81CA40085FC75BABD2C91D18AA9FFA68)
  • cleanup

Malware Configuration

Threatname: GuLoader

{"Payload URL": "https://cdn.discordapp.com/attachments/973717070128771135/973717952987820073/a1.exe"}

Yara Signatures

Memory Dumps

SourceRuleDescriptionAuthorStrings
0000000A.00000002.230879622484.0000000000F90000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security
    0000000A.00000000.225982150371.0000000000F90000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security
      00000002.00000002.226641346384.0000000003278000.00000040.00000800.00020000.00000000.sdmpJoeSecurity_GuLoader_2Yara detected GuLoaderJoe Security

        Sigma Signatures

        ⊘No Sigma rule has matched

        Snort Signatures

        ⊘No Snort rule has matched

        Joe Sandbox Signatures

        Click to jump to signature section

        Show All Signature Results

        AV Detection

        barindex
        Found malware configuration
        Source: 0000000A.00000002.230879622484.0000000000F9