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Windows Analysis Report
rzN2ckYW24.exe

Overview

General Information

Sample Name:rzN2ckYW24.exe
Analysis ID:736948
MD5:44159444c9bc9980871b80b3ae071ffb
SHA1:baf57ff497d2e202a1a119e8719e44c0aa100475
SHA256:9e4f0e0a10a778fb94e7631c17082b44bf75170d7ca81b393574fd3f4c004f47
Tags:AgentTeslaexe
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 Telegram RAT
Yara detected AgentTesla
Yara detected AntiVM3
Snort IDS alert for network traffic
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)
Uses the Telegram API (likely for C&C communication)
Machine Learning detection for sample
May check the online IP address of the machine
.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
Yara detected Credential Stealer
JA3 SSL client fingerprint seen in connection with other malware
HTTP GET or POST without a user agent
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
Uses a known web browser user agent for HTTP communication
Binary contains a suspicious time stamp
Queries sensitive processor information (via WMI, Win32_Processor, often done to detect virtual machines)
Creates a process in suspended mode (likely to inject code)

Classification

  • System is w10x64
  • rzN2ckYW24.exe (PID: 3044 cmdline: C:\Users\user\Desktop\rzN2ckYW24.exe MD5: 44159444C9BC9980871B80B3AE071FFB)
    • rzN2ckYW24.exe (PID: 6132 cmdline: C:\Users\user\Desktop\rzN2ckYW24.exe MD5: 44159444C9BC9980871B80B3AE071FFB)
    • rzN2ckYW24.exe (PID: 6128 cmdline: C:\Users\user\Desktop\rzN2ckYW24.exe MD5: 44159444C9BC9980871B80B3AE071FFB)
  • cleanup
{"C2 url": "https://api.telegram.org/bot5577155192:AAEz6ZTkghx2RsdTxeeE-sDulPHc5WQblVg/sendMessage"}
{"Exfil Mode": "Telegram", "Telegram Url": "https://api.telegram.org/bot5577155192:AAEz6ZTkghx2RsdTxeeE-sDulPHc5WQblVg/"}
SourceRuleDescriptionAuthorStrings
00000002.00000002.522788647.0000000002854000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
    00000002.00000002.522788647.0000000002854000.00000004.00000800.00020000.00000000.sdmpJoeSecurity_CredentialStealerYara detected Credential StealerJoe Security
      00000002.00000000.279572374.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
        00000002.00000000.279572374.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
          00000002.00000000.279572374.0000000000402000.00000040.00000400.00020000.00000000.sdmpWindows_Trojan_AgentTesla_d3ac2b2funknownunknown
          • 0x31d21:$a13: get_DnsResolver
          • 0x30402:$a20: get_LastAccessed
          • 0x3274f:$a27: set_InternalServerPort
          • 0x32a84:$a30: set_GuidMasterKey
          • 0x30514:$a33: get_Clipboard
          • 0x30522:$a34: get_Keyboard
          • 0x3191b:$a35: get_ShiftKeyDown
          • 0x3192c:$a36: get_AltKeyDown
          • 0x3052f:$a37: get_Password
          • 0x31062:$a38: get_PasswordHash
          • 0x32183:$a39: get_DefaultCredentials
          Click to see the 14 entries
          SourceRuleDescriptionAuthorStrings
          0.2.rzN2ckYW24.exe.3dd31a8.13.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
            0.2.rzN2ckYW24.exe.3dd31a8.13.unpackJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
              0.2.rzN2ckYW24.exe.3dd31a8.13.unpackMALWARE_Win_AgentTeslaV3AgentTeslaV3 infostealer payloadditekSHen
              • 0x32c5f:$s10: logins
              • 0x326d9:$s11: credential
              • 0x2e914:$g1: get_Clipboard
              • 0x2e922:$g2: get_Keyboard
              • 0x2e92f:$g3: get_Password
              • 0x2fd0b:$g4: get_CtrlKeyDown
              • 0x2fd1b:$g5: get_ShiftKeyDown
              • 0x2fd2c:$g6: get_AltKeyDown
              0.2.rzN2ckYW24.exe.3dd31a8.13.unpackWindows_Trojan_AgentTesla_d3ac2b2funknownunknown
              • 0x30121:$a13: get_DnsResolver
              • 0x2e802:$a20: get_LastAccessed
              • 0x30b4f:$a27: set_InternalServerPort
              • 0x30e84:$a30: set_GuidMasterKey
              • 0x2e914:$a33: get_Clipboard
              • 0x2e922:$a34: get_Keyboard
              • 0x2fd1b:$a35: get_ShiftKeyDown
              • 0x2fd2c:$a36: get_AltKeyDown
              • 0x2e92f:$a37: get_Password
              • 0x2f462:$a38: get_PasswordHash
              • 0x30583:$a39: get_DefaultCredentials
              2.0.rzN2ckYW24.exe.400000.0.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security