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Windows Analysis Report
ATTACHED FILE (2).exe

Overview

General Information

Sample Name:ATTACHED FILE (2).exe
Analysis ID:626244
MD5:a54ebe06ed43c17fb5fae1a2bbafa2fb
SHA1:17c5bbe86e2f1ac5a81eda497ebf65e3f3f17bd8
SHA256:15cb6c5ee0ea7208770e08b093202e64f73bfe0614c6fbbbdd2cad96db1049d8
Tags:agentteslaexe
Infos:

Detection

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

Signatures

Found malware configuration
Multi AV Scanner detection for submitted file
Malicious sample detected (through community Yara rule)
Yara detected AgentTesla
Yara detected AntiVM3
Multi AV Scanner detection for dropped file
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 very large array initializations
Machine Learning detection for dropped file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Uses schtasks.exe or at.exe to add and modify task schedules
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)
Internet Provider seen in connection with other malware
Detected potential crypto function
Sample execution stops while process was sleeping (likely an evasion)
Yara detected Credential Stealer
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
Drops PE files
Detected TCP or UDP traffic on non-standard ports
Uses SMTP (mail sending)
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
  • ATTACHED FILE (2).exe (PID: 3636 cmdline: "C:\Users\user\Desktop\ATTACHED FILE (2).exe" MD5: A54EBE06ED43C17FB5FAE1A2BBAFA2FB)
    • schtasks.exe (PID: 5964 cmdline: C:\Windows\System32\schtasks.exe" /Create /TN "Updates\QFuHJZVlQZLJcC" /XML "C:\Users\user\AppData\Local\Temp\tmpB58E.tmp MD5: 15FF7D8324231381BAD48A052F85DF04)
      • conhost.exe (PID: 3356 cmdline: C:\Windows\system32\conhost.exe 0xffffffff -ForceV1 MD5: EA777DEEA782E8B4D7C7C33BBF8A4496)
  • cleanup
{"Exfil Mode": "SMTP", "Username": "biju@pabautouae.com", "Password": "biju@6442324", "Host": "mail.pabautouae.com"}
SourceRuleDescriptionAuthorStrings
00000008.00000000.297323017.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
    00000008.00000000.297323017.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
      00000008.00000000.295815740.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
        00000008.00000000.295815740.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
          00000008.00000002.511040182.0000000000402000.00000040.00000400.00020000.00000000.sdmpJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
            Click to see the 13 entries
            SourceRuleDescriptionAuthorStrings
            8.0.ATTACHED FILE (2).exe.400000.12.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
              8.0.ATTACHED FILE (2).exe.400000.12.unpackJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
                8.0.ATTACHED FILE (2).exe.400000.12.unpackMALWARE_Win_AgentTeslaV3AgentTeslaV3 infostealer payloadditekSHen
                • 0x32a0a:$s10: logins
                • 0x32477:$s11: credential
                • 0x2eaca:$g1: get_Clipboard
                • 0x2ead8:$g2: get_Keyboard
                • 0x2eae5:$g3: get_Password
                • 0x2fda3:$g4: get_CtrlKeyDown
                • 0x2fdb3:$g5: get_ShiftKeyDown
                • 0x2fdc4:$g6: get_AltKeyDown
                8.0.ATTACHED FILE (2).exe.400000.4.unpackJoeSecurity_AgentTesla_1Yara detected AgentTeslaJoe Security
                  8.0.ATTACHED FILE (2).exe.400000.4.unpackJoeSecurity_AgentTesla_2Yara detected AgentTeslaJoe Security
                    Click to see the 20 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: 8.2.ATTACHED FILE (2).exe.400000.0.unpackMalware Configuration Extractor: Agenttesla {"Exfil Mode": "SMTP", "Username": "biju@pabautouae.com", "Password": "biju@6442324", "Host": "mail.pabautouae.com"}
                    Source: ATTACHED FILE (2).exeVirustotal: Detection: 34%Perma Link
                    Source: ATTACHED FILE (2).exeReversingLabs: Detection: 34%
                    Source: C:\Users\user\AppData\Roaming\QFuHJZVlQZLJcC.exeReversingLabs: Detection: 34%
                    Source: ATTACHED FILE (2).exeJoe Sandbox ML: detected
                    Source: C:\Users\user\AppData\Roaming\QFuHJZVlQZLJcC.exeJoe Sandbox ML: detected
                    Source: 8.2.ATTACHED FILE (2).exe.400000.0.unpackAvira: Label: TR/Spy.Gen8
                    Source: 8.0.ATTACHED FILE (2).exe.400000.6.unpackAvira: Label: TR/Spy.Gen8
                    Source: 8.0.ATTACHED FILE (2).exe.400000.12.unpackAvira: Label: TR/Spy.Gen8
                    Source: 8.0.ATTACHED FILE (2).exe.400000.4.unpackAvira: Label: TR/Spy.Gen8
                    Source: 8.0.ATTACHED FILE (2).exe.400000.10.unpackAvira: Label: TR/Spy.Gen8
                    Source: 8.0.ATTACHED FILE (2).exe.400000.8.unpackAvira: Label: TR/Spy.Gen8
                    Source: ATTACHED FILE (2).exeStatic PE information: 32BIT_MACHINE, EXECUTABLE_IMAGE
                    Source: ATTACHED FILE (2).exeStatic PE information: NO_SEH, TERMINAL_SERVER_AWARE, DYNAMIC_BASE, NX_COMPAT
                    Source: Joe Sandbox ViewASN Name: ALABANZA-BALTUS ALABANZA-BALTUS
                    Source: global trafficTCP traffic: 192.168.2.3:49744 -> 65.108.71.185:587
                    Source: global trafficTCP traffic: 192.168.2.3:49744 -> 65.108.71.185:587
                    Source: ATTACHED FILE (2).exe, 00000008.00000002.516456497.0000000002F41000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://127.0.0.1:HTTP/1.1
                    Source: ATTACHED FILE (2).exe, 00000008.00000002.516456497.0000000002F41000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://DynDns.comDynDNSnamejidpasswordPsi/Psi
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://fontfabrik.com
                    Source: ATTACHED FILE (2).exe, 00000008.00000002.517649169.0000000003297000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://mail.pabautouae.com
                    Source: ATTACHED FILE (2).exe, 00000008.00000002.516456497.0000000002F41000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://ncOfHo.com
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.301597853.0000000002A11000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.apache.org/licenses/LICENSE-2.0
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.carterandcone.coml
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers/?
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers/cabarga.htmlN
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers/frere-jones.html
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers8
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www.fontbureau.com/designers?
                    Source: ATTACHED FILE (2).exe, 00000000.00000002.309744930.0000000006BE2000.00000004.00000800.00020000.00000000.sdmpString found in binary or memory: http://www