Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-03-2024 00:15

General

  • Target

    dc87c553f18d409daafd6af7f4feaab1685367c573d22181ca1397737b92d93b.exe

  • Size

    409KB

  • MD5

    29c17bac7bd976f82a4d3585d17fb89b

  • SHA1

    940c2887c6119ab5d1d122aafdf2202dfb531379

  • SHA256

    dc87c553f18d409daafd6af7f4feaab1685367c573d22181ca1397737b92d93b

  • SHA512

    7b5cc9660553e2b678785e44f36cb539267326d32818389954421c1399ace8ec05329a25e774d195119f8349e1b7aed94f7159e84c479510e6ce8d360134e928

  • SSDEEP

    6144:Jm6lOzD+VISaP8j/1+UtArRTOpGEsKmqYBd3a5eRkTjzUAfJkm/:w6lOzyVIbPzcA1WGwmqqdqU6LHum/

Malware Config

Extracted

Family

stealc

C2

http://185.172.128.209

Attributes
  • url_path

    /3cd2b41cbde8fc9c.php

Signatures

  • Buer

    Buer is a new modular loader first seen in August 2019.

  • Detect ZGRat V1 3 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • ZGRat

    ZGRat is remote access trojan written in C#.

  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 4 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of FindShellTrayWindow 7 IoCs
  • Suspicious use of SendNotifyMessage 7 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dc87c553f18d409daafd6af7f4feaab1685367c573d22181ca1397737b92d93b.exe
    "C:\Users\Admin\AppData\Local\Temp\dc87c553f18d409daafd6af7f4feaab1685367c573d22181ca1397737b92d93b.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Users\Admin\AppData\Local\Temp\ui0.0.exe
      "C:\Users\Admin\AppData\Local\Temp\ui0.0.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Loads dropped DLL
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:4436
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\system32\cmd.exe" /c start "" "C:\Users\Admin\AppData\Local\Temp\IEBAAFCAFC.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1944
        • C:\Users\Admin\AppData\Local\Temp\IEBAAFCAFC.exe
          "C:\Users\Admin\AppData\Local\Temp\IEBAAFCAFC.exe"
          4⤵
          • Checks computer location settings
          • Executes dropped EXE
          • Adds Run key to start application
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2340
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /C ping 2.2.2.2 -n 1 -w 3000 > Nul & Del C:\Users\Admin\AppData\Local\Temp\IEBAAFCAFC.exe
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3076
            • C:\Windows\SysWOW64\PING.EXE
              ping 2.2.2.2 -n 1 -w 3000
              6⤵
              • Runs ping.exe
              PID:3612
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4436 -s 2276
        3⤵
        • Program crash
        PID:2696
    • C:\Users\Admin\AppData\Local\Temp\ui0.1.exe
      "C:\Users\Admin\AppData\Local\Temp\ui0.1.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Checks SCSI registry key(s)
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1568
      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe
        "C:\Users\Admin\AppData\Local\Temp\iolo\dm\SystemMechanic_5488CB36-BE62-4606-B07B-2EE938868BD1.exe" /eieci=11A12794-499E-4FA0-A281-A9A9AA8B2685 /eipi=5488CB36-BE62-4606-B07B-2EE938868BD1
        3⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:2668
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 648 -s 1516
      2⤵
      • Program crash
      PID:1756
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 648 -ip 648
    1⤵
      PID:8
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4436 -ip 4436
      1⤵
        PID:2400

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • C:\ProgramData\Are.docx

        Filesize

        11KB

        MD5

        a33e5b189842c5867f46566bdbf7a095

        SHA1

        e1c06359f6a76da90d19e8fd95e79c832edb3196

        SHA256

        5abf8e3d1f78de7b09d7f6fb87f9e80e60caacf13ef3c1289665653dacd7c454

        SHA512

        f2ad3812ec9b915e9618539b0f103f2e9acaad25fbbacd84941c954ce070af231324e83a4621e951c1dbae8d40d50410954e40dd52bbd46e34c54b0d1957407b

      • C:\ProgramData\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • C:\ProgramData\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • C:\Users\Admin\AppData\Local\Temp\IEBAAFCAFC.exe

        Filesize

        101KB

        MD5

        42b838cf8bdf67400525e128d917f6e0

        SHA1

        a578f6faec738912dba8c41e7abe1502c46d0cae

        SHA256

        0e4ffba62ce9a464aa1b7ff9f1e55ace8f51ff1e15102d856f801a81f8b4607d

        SHA512

        f64b39d885375251ab7db72c57dc5b5095f0c6412169f1035d1f6a25b8415a2a01004d06bfa0267cf683ef7dea7a9f969ad43fde5a4376f1fcb65a57403433c0

      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

        Filesize

        2KB

        MD5

        b9477b45fd8b536a2223544ec26db25f

        SHA1

        42f38fd289a499cd673b616b83cb25eb22600b9c

        SHA256

        e3f96c67eeb1a82beb5438e797af26c7ffe4d27906a25e79ef61b43593b3a271

        SHA512

        6b7f49cd13443b3407f332a9a919f19baec1b79349c625576465ee4bc1e7666eab1a1e4d5a211701875dc2e242cbf049af817edb727090cd5ff8adde03e36dda

      • C:\Users\Admin\AppData\Local\Temp\iolo\dm\ioloDMLog.txt

        Filesize

        3KB

        MD5

        4aa3494c89df7646af875831c4e4ea5e

        SHA1

        061ab68953cd898891166608e6b9b0b75f0ac448

        SHA256

        89c189a76568220092d2d8a836e05c9c082f8e071f394c42fb826f4c8c84fe7f

        SHA512

        aecd3c03efa0929ffb67194d32efe9bca475742d382b7aeac0bc3cbd946ec2a70c199e6776c156036b6c24b52a33c651ee43c5cb2c6d2954d7c17f33996f60c0

      • C:\Users\Admin\AppData\Local\Temp\ui0.0.exe

        Filesize

        261KB

        MD5

        369bcf5627230da1e49844148acf3fe1

        SHA1

        929b7947ca9e37b4b7f9e8c881ac31f86a6d29e3

        SHA256

        347ea599612fa73c1ad9b66eb576f6e74d4435bd1bdc4488f6d93e7564e3e1f4

        SHA512

        3274e4d9482b58eef43058ce6355db3b74f038f8af08bed04b0e86b5f5eb56ffbbe84c7b6cd4e0357d306069e30bc86de558f4e559c32a8a0bb9c8f040bbb490

      • C:\Users\Admin\AppData\Local\Temp\ui0.1.exe

        Filesize

        342KB

        MD5

        a14500c571c76d698c228749528156a5

        SHA1

        68e5c84fcd8a620b2f60a4b444ab172b54ce194a

        SHA256

        699b1c4ce33537f1badce2ee35d68a0ae891474f408b95b0bc704ad5f3ce0425

        SHA512

        f3318dfb16158457ddcfb6e359ea7e9c2448d00e19afec577e8d80bb180930b1c5b39761a899a5564308d05ed6338d25d517b60a281701abc741fad88de56154

      • C:\Users\Admin\AppData\Local\Temp\ui0.1.exe

        Filesize

        507KB

        MD5

        56c951c093b5ca4804b553ad2ff5e003

        SHA1

        996afb7862a06158a01e4aad89e8ab619b2a2c49

        SHA256

        09ebfbdb7430ee28968dacc84c932cc6948dbe64afa4c0488a17c23fd35b9e48

        SHA512

        66a1ea5879bea0bdb5a95de9708eaad3ea07f9fb5ba05ace5803afe680df4e483793a6163691e11a837c9f826d7dfea8a1b32832afb828492c2fdc9981a4bbae

      • memory/648-107-0x0000000000400000-0x000000000056B000-memory.dmp

        Filesize

        1.4MB

      • memory/648-89-0x0000000000950000-0x0000000000A50000-memory.dmp

        Filesize

        1024KB

      • memory/648-1-0x0000000000950000-0x0000000000A50000-memory.dmp

        Filesize

        1024KB

      • memory/648-64-0x0000000000400000-0x000000000056B000-memory.dmp

        Filesize

        1.4MB

      • memory/648-3-0x0000000000400000-0x000000000056B000-memory.dmp

        Filesize

        1.4MB

      • memory/648-2-0x0000000000870000-0x00000000008DF000-memory.dmp

        Filesize

        444KB

      • memory/1568-102-0x0000000000AF0000-0x0000000000AF1000-memory.dmp

        Filesize

        4KB

      • memory/1568-139-0x0000000000400000-0x00000000008AD000-memory.dmp

        Filesize

        4.7MB

      • memory/2340-203-0x00000000009B0000-0x00000000009CE000-memory.dmp

        Filesize

        120KB

      • memory/2340-206-0x0000000005400000-0x0000000005410000-memory.dmp

        Filesize

        64KB

      • memory/2340-208-0x0000000072180000-0x0000000072930000-memory.dmp

        Filesize

        7.7MB

      • memory/2340-204-0x0000000072180000-0x0000000072930000-memory.dmp

        Filesize

        7.7MB

      • memory/2340-209-0x0000000005400000-0x0000000005410000-memory.dmp

        Filesize

        64KB

      • memory/2668-151-0x00000233CC680000-0x00000233CC6AA000-memory.dmp

        Filesize

        168KB

      • memory/2668-167-0x00000233D2030000-0x00000233D203A000-memory.dmp

        Filesize

        40KB

      • memory/2668-144-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-145-0x00000233CC550000-0x00000233CC65E000-memory.dmp

        Filesize

        1.1MB

      • memory/2668-146-0x00000233B3B20000-0x00000233B3B30000-memory.dmp

        Filesize

        64KB

      • memory/2668-147-0x00000233CC4D0000-0x00000233CC4DC000-memory.dmp

        Filesize

        48KB

      • memory/2668-148-0x00000233CC4C0000-0x00000233CC4D4000-memory.dmp

        Filesize

        80KB

      • memory/2668-149-0x00000233CC520000-0x00000233CC544000-memory.dmp

        Filesize

        144KB

      • memory/2668-150-0x00000233CC660000-0x00000233CC66A000-memory.dmp

        Filesize

        40KB

      • memory/2668-152-0x00000233CC900000-0x00000233CC9B2000-memory.dmp

        Filesize

        712KB

      • memory/2668-141-0x00007FFB63110000-0x00007FFB63BD1000-memory.dmp

        Filesize

        10.8MB

      • memory/2668-153-0x00000233CC9B0000-0x00000233CCA2A000-memory.dmp

        Filesize

        488KB

      • memory/2668-154-0x00000233CCA50000-0x00000233CCAB2000-memory.dmp

        Filesize

        392KB

      • memory/2668-155-0x00000233CCB30000-0x00000233CCBA6000-memory.dmp

        Filesize

        472KB

      • memory/2668-156-0x00000233CC670000-0x00000233CC67A000-memory.dmp

        Filesize

        40KB

      • memory/2668-160-0x00000233CCBB0000-0x00000233CCEB0000-memory.dmp

        Filesize

        3.0MB

      • memory/2668-162-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-163-0x00000233D1590000-0x00000233D1598000-memory.dmp

        Filesize

        32KB

      • memory/2668-164-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-165-0x00000233D0ED0000-0x00000233D0F08000-memory.dmp

        Filesize

        224KB

      • memory/2668-166-0x00000233D0EA0000-0x00000233D0EAE000-memory.dmp

        Filesize

        56KB

      • memory/2668-143-0x00000233AE590000-0x00000233B1E62000-memory.dmp

        Filesize

        56.8MB

      • memory/2668-168-0x00000233D1DB0000-0x00000233D1DD2000-memory.dmp

        Filesize

        136KB

      • memory/2668-169-0x00000233D2570000-0x00000233D2A98000-memory.dmp

        Filesize

        5.2MB

      • memory/2668-173-0x00000233D1DD0000-0x00000233D1DDC000-memory.dmp

        Filesize

        48KB

      • memory/2668-172-0x00000233D1E20000-0x00000233D1E70000-memory.dmp

        Filesize

        320KB

      • memory/2668-174-0x00000233CCEE0000-0x00000233CCF02000-memory.dmp

        Filesize

        136KB

      • memory/2668-175-0x00000233CCF10000-0x00000233CCF2E000-memory.dmp

        Filesize

        120KB

      • memory/2668-186-0x00007FFB63110000-0x00007FFB63BD1000-memory.dmp

        Filesize

        10.8MB

      • memory/2668-191-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-188-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-189-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/2668-190-0x00000233CC540000-0x00000233CC550000-memory.dmp

        Filesize

        64KB

      • memory/4436-187-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/4436-127-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/4436-91-0x00000000006D0000-0x00000000007D0000-memory.dmp

        Filesize

        1024KB

      • memory/4436-202-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/4436-68-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/4436-16-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/4436-15-0x0000000000400000-0x000000000063B000-memory.dmp

        Filesize

        2.2MB

      • memory/4436-14-0x00000000007D0000-0x00000000007F7000-memory.dmp

        Filesize

        156KB

      • memory/4436-13-0x00000000006D0000-0x00000000007D0000-memory.dmp

        Filesize

        1024KB