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Windows Analysis Report
rdwREyLU2K.exe

Overview

General Information

Sample Name:rdwREyLU2K.exe
Analysis ID:715064
MD5:25d6c4747284bf8489b1faa56a1ddd42
SHA1:49112625189085cdde41b13809efa60d3d26fc5a
SHA256:17589e726e9a629be05b4a39848c3a399549b646c38bbe9ac4c301a261dacc8f
Tags:exe
Infos:

Detection

AgentTesla
Score:100
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Yara detected AntiVM3
Installs a global keyboard hook
Tries to steal Mail credentials (via file / registry access)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Machine Learning detection for sample
.NET source code contains potential unpacker
Injects a PE file into a foreign processes
.NET source code contains very large array initializations
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Tries to harvest and steal browser information (history, passwords, etc)
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Uses 32bit PE files
Queries the volume information (name, serial number etc) of a device
Yara signature match
Antivirus or Machine Learning detection for unpacked file
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Detected potential crypto function
Found potential string decryption / allocating functions
Yara detected Credential Stealer
IP address seen in connection with other malware
Contains long sleeps (>= 3 min)
Enables debug privileges
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
Detected TCP or UDP traffic on non-standard ports
Uses SMTP (mail sending)
Creates a window with clipboard capturing capabilities
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Creates a process in suspended mode (likely to inject code)
Contains functionality to access loader functionality (e.g. LdrGetProcedureAddress)

Classification

  • System is w10x64
  • rdwREyLU2K.exe (PID: 4240 cmdline: C:\Users\user\Desktop\rdwREyLU2K.exe MD5: 25D6C4747284BF8489B1FAA56A1DDD42)
    • rdwREyLU2K.exe (PID: 4844 cmdline: C:\Users\user\Desktop\rdwREyLU2K.exe MD5: 25D6C4747284BF8489B1FAA56A1DDD42)
    • rdwREyLU2K.exe (PID: 5436 cmdline: C:\Users\user\Desktop\rdwREyLU2K.exe MD5: 25D6C4747284BF8489B1FAA56A1DDD42)
  • cleanup
{"Exfil Mode": "SMTP", "Host": "smtp.yandex.com", "Username": "viorel5000@yandex.ru", "Password": "YAWALESS123@@"}
SourceRuleDescriptionAuthorStrings
00000002.00000000.335755215.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
    00000002.00000000.335755215.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
      00000002.00000000.335755215.0000000000402000.00000040.00000400.00020000.00000000.sdmpWindows_Trojan_AgentTesla_d3ac2b2funknownunknown
      • 0x2feda:$a13: get_DnsResolver
      • 0x2e689:$a20: get_LastAccessed
      • 0x3086c:$a27: set_InternalServerPort
      • 0x30b89:$a30: set_GuidMasterKey
      • 0x2e790:$a33: get_Clipboard
      • 0x2e79e:$a34: get_Keyboard
      • 0x2fb10:$a35: get_ShiftKeyDown
      • 0x2fb21:$a36: get_AltKeyDown
      • 0x2e7ab:$a37: get_Password
      • 0x2f2c0:$a38: get_PasswordHash
      • 0x302d7:$a39: get_DefaultCredentials
      00000000.00000002.343609881.0000000003D7F000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
        00000000.00000002.343609881.0000000003D7F000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
          Click to see the 10 entries
          SourceRuleDescriptionAuthorStrings
          2.0.rdwREyLU2K.exe.400000.0.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
            2.0.rdwREyLU2K.exe.400000.0.unpackJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
              2.0.rdwREyLU2K.exe.400000.0.unpackMALWARE_Win_AgentTeslaV3AgentTeslaV3 infostealer payloadditekSHen
              • 0x329ce:$s10: logins
              • 0x32420:$s11: credential
              • 0x2e990:$g1: get_Clipboard
              • 0x2e99e:$g2: get_Keyboard
              • 0x2e9ab:$g3: get_Password
              • 0x2fd00:$g4: get_CtrlKeyDown
              • 0x2fd10:$g5: get_ShiftKeyDown
              • 0x2fd21:$g6: get_AltKeyDown
              2.0.rdwREyLU2K.exe.400000.0.unpackWindows_Trojan_AgentTesla_d3ac2b2funknownunknown
              • 0x300da:$a13: get_DnsResolver
              • 0x2e889:$a20: get_LastAccessed
              • 0x30a6c:$a27: set_InternalServerPort
              • 0x30d89:$a30: set_GuidMasterKey
              • 0x2e990:$a33: get_Clipboard
              • 0x2e99e:$a34: get_Keyboard
              • 0x2fd10:$a35: get_ShiftKeyDown
              • 0x2fd21:$a36: get_AltKeyDown
              • 0x2e9ab:$a37: get_Password
              • 0x2f4c0:$a38: get_PasswordHash
              • 0x304d7:$a39: get_DefaultCredentials
              0.2.rdwREyLU2K.exe.3db5fb8.8.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
                Click to see the 19 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: rdwREyLU2K.exeReversingLabs: Detection: 29%
                Source: rdwREyLU2K.exeVirustotal: Detection: 29%Perma Link
                Source: rdwREyLU2K.exeJoe Sandbox ML: detected
                Source: 2.0.rdwREyLU2K.exe.400000.0.unpackAvira: Label: TR/Spy.Gen8
                Source: 0.2.rdwREyLU2K.exe.3db5fb8.8.unpackMalware Configuration Extractor: Agenttesla {"Exfil Mode": "SMTP", "Host": "smtp.yandex.com", "Username": "viorel5000@yandex.ru", "Password": "YAWALESS123@@"}
                Source: rdwREyLU2K.exeStatic PE information: EXECUTABLE_IMAGE, 32BIT_MACHINE
                Source: rdwREyLU2K.exeStatic PE information: DYNAMIC_BASE, NX_COMPAT, NO_SEH, TERMINAL_SERVER_AWARE