Analysis

  • max time kernel
    118s
  • max time network
    112s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 09:52

General

  • Target

    ##!!SetUp_2244_Pa$sW0rd$$!!/Setup.exe

  • Size

    94KB

  • MD5

    9a4cc0d8e7007f7ef20ca585324e0739

  • SHA1

    f3e5a2e477cac4bab85940a2158eed78f2d74441

  • SHA256

    040d121a3179f49cd3f33f4bc998bc8f78b7f560bfd93f279224d69e76a06e92

  • SHA512

    54636a48141804112f5b4f2fc70cb7c959a041e5743aeedb5184091b51daa1d1a03f0016e8299c0d56d924c6c8ae585e4fc864021081ffdf1e6f3eab11dd43b3

  • SSDEEP

    1536:9M/AhIxHHWMpdPa5wiE21M8kJIGFvb1Cwn/ZDs5yf:9M4SwMpdCq/IM8uIGfV/ZDso

Malware Config

Extracted

Family

stealc

rc4.plain

Signatures

  • Detect Vidar Stealer 7 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Downloads MZ/PE file
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Suspicious use of SetThreadContext 4 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Drops file in Windows directory 2 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 1 IoCs

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

  • Delays execution with timeout.exe 1 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\##!!SetUp_2244_Pa$sW0rd$$!!\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\##!!SetUp_2244_Pa$sW0rd$$!!\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:2124
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\SysWOW64\netsh.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3400
      • C:\Users\Admin\AppData\Local\Temp\coml.au3
        C:\Users\Admin\AppData\Local\Temp\coml.au3
        3⤵
        • Checks computer location settings
        • Loads dropped DLL
        • Checks processor information in registry
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:2156
        • C:\ProgramData\FCAECAKKFB.exe
          "C:\ProgramData\FCAECAKKFB.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3280
          • C:\Windows\SysWOW64\ftp.exe
            C:\Windows\SysWOW64\ftp.exe
            5⤵
            • Drops file in Windows directory
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2548
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
                PID:4604
          • C:\ProgramData\ECAFHIIJJE.exe
            "C:\ProgramData\ECAFHIIJJE.exe"
            4⤵
            • Suspicious use of SetThreadContext
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:4372
            • C:\Windows\SysWOW64\ftp.exe
              C:\Windows\SysWOW64\ftp.exe
              5⤵
              • Suspicious use of SetThreadContext
              • Drops file in Windows directory
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious behavior: MapViewOfSection
              • Suspicious use of WriteProcessMemory
              PID:4620
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                6⤵
                  PID:916
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\DHDBGHCBAEGC" & exit
              4⤵
              • Suspicious use of WriteProcessMemory
              PID:4556
              • C:\Windows\SysWOW64\timeout.exe
                timeout /t 10
                5⤵
                • Delays execution with timeout.exe
                PID:4648

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\ProgramData\DHDBGHCBAEGC\VCRUNT~1.DLL

        Filesize

        78KB

        MD5

        a37ee36b536409056a86f50e67777dd7

        SHA1

        1cafa159292aa736fc595fc04e16325b27cd6750

        SHA256

        8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825

        SHA512

        3a7c260646315cf8c01f44b2ec60974017496bd0d80dd055c7e43b707cadba2d63aab5e0efd435670aa77886ed86368390d42c4017fc433c3c4b9d1c47d0f356

      • C:\ProgramData\DHDBGHCBAEGC\mozglue.dll

        Filesize

        593KB

        MD5

        c8fd9be83bc728cc04beffafc2907fe9

        SHA1

        95ab9f701e0024cedfbd312bcfe4e726744c4f2e

        SHA256

        ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a

        SHA512

        fbb446f4a27ef510e616caad52945d6c9cc1fd063812c41947e579ec2b54df57c6dc46237ded80fca5847f38cbe1747a6c66a13e2c8c19c664a72be35eb8b040

      • C:\ProgramData\DHDBGHCBAEGC\msvcp140.dll

        Filesize

        439KB

        MD5

        5ff1fca37c466d6723ec67be93b51442

        SHA1

        34cc4e158092083b13d67d6d2bc9e57b798a303b

        SHA256

        5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062

        SHA512

        4802ef62630c521d83a1d333969593fb00c9b38f82b4d07f70fbd21f495fea9b3f67676064573d2c71c42bc6f701992989742213501b16087bb6110e337c7546

      • C:\ProgramData\DHDBGHCBAEGC\nss3.dll

        Filesize

        2.0MB

        MD5

        1cc453cdf74f31e4d913ff9c10acdde2

        SHA1

        6e85eae544d6e965f15fa5c39700fa7202f3aafe

        SHA256

        ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5

        SHA512

        dd9ff4e06b00dc831439bab11c10e9b2ae864ea6e780d3835ea7468818f35439f352ef137da111efcdf2bb6465f6ca486719451bf6cf32c6a4420a56b1d64571

      • C:\ProgramData\DHDBGHCBAEGC\softokn3.dll

        Filesize

        251KB

        MD5

        4e52d739c324db8225bd9ab2695f262f

        SHA1

        71c3da43dc5a0d2a1941e874a6d015a071783889

        SHA256

        74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a

        SHA512

        2d4168a69082a9192b9248f7331bd806c260478ff817567df54f997d7c3c7d640776131355401e4bdb9744e246c36d658cb24b18de67d8f23f10066e5fe445f6

      • C:\ProgramData\ECAFHIIJJE.exe

        Filesize

        2.3MB

        MD5

        daaff76b0baf0a1f9cec253560c5db20

        SHA1

        0311cf0eeb4beddd2c69c6e97462595313a41e78

        SHA256

        5706c6f5421a6a34fdcb67e9c9e71283c8fc1c33499904519cbdc6a21e6b071c

        SHA512

        987ca2d67903c65ee1075c4a5250c85840aea26647b1d95a3e73a26dcad053bd4c31df4ca01d6cc0c196fa7e8e84ab63ed4a537f72fc0b1ee4ba09cdb549ddf3

      • C:\ProgramData\FCAECAKKFB.exe

        Filesize

        8.6MB

        MD5

        6cfddd5ce9ca4bb209bd5d8c2cd80025

        SHA1

        424da82e9edbb6b39a979ab97d84239a1d67c48b

        SHA256

        376e1802b979514ba0e9c73933a8c6a09dd3f1d2a289f420c2202e64503d08a7

        SHA512

        d861130d87bfedc38a97019cba17724067f397e6ffe7e1384175db48c0a177a2e7e256c3c933d0f42766e8077f767d6d4dc8758200852e8ec135736daee7c0f8

      • C:\Users\Admin\AppData\Local\Temp\510c46e4

        Filesize

        951KB

        MD5

        c62f812e250409fbd3c78141984270f2

        SHA1

        9c7c70bb78aa0de4ccf0c2b5d87b37c8a40bd806

        SHA256

        d8617477c800cc10f9b52e90b885117a27266831fb5033647b6b6bd6025380a8

        SHA512

        7573ecac1725f395bbb1661f743d8ee6b029f357d3ef07d0d96ee4ff3548fe06fab105ee72be3e3964d2053de2f44245cca9a061d47c1411949840c84f6e9092

      • C:\Users\Admin\AppData\Local\Temp\536dc159

        Filesize

        1.1MB

        MD5

        8d443e7cb87cacf0f589ce55599e008f

        SHA1

        c7ff0475a3978271e0a8417ac4a826089c083772

        SHA256

        e2aaaa1a0431aab1616e2b612e9b68448107e6ce71333f9c0ec1763023b72b2a

        SHA512

        c7d0ced6eb9e203d481d1dbdd5965278620c10cdc81c02da9c4f7f99f3f8c61dfe975cf48d4b93ccde9857edb881a77ebe9cd13ae7ef029285d770d767aa74a5

      • C:\Users\Admin\AppData\Local\Temp\565039bd

        Filesize

        736KB

        MD5

        98945b4ef62413ea3bff24c4508b9fad

        SHA1

        11fddd10445f4c790e1d72d4c613ae9adbdf95ba

        SHA256

        aa4bbe20186e7ceefaa102cebaa4c0ef638303ca766c6427fad908b339ae9cc2

        SHA512

        7574569b1c9776c70a770c72405232ccf8b7a42636d82753c787ac1c75ad579a681ced2f7236f4e8995d61ef1d6d816405c1c10ec6e87803e710cde05f511bb4

      • C:\Users\Admin\AppData\Local\Temp\57db3a1d

        Filesize

        1.1MB

        MD5

        bf3f8629b8e2e7fc2441852da544cccc

        SHA1

        4ba1954890997bc7cd5c592661d93e3866719dab

        SHA256

        39792ae7b3164d1bbbab719a408932a44be5d458020c45d23807e10c9f628fdb

        SHA512

        b54d07f39ff079063d1cb4e086041e8dedf216e029c0b383832dd432aa8c41c00f2df327ceee700298578c9cc96a2c50cb4e7cf0d051aca795157e9bebd40529

      • C:\Users\Admin\AppData\Local\Temp\a0f4ad70

        Filesize

        6.8MB

        MD5

        6b3fc718ef66311d05fd7f9ff83e541d

        SHA1

        f98cf16628a02540ec653b056c94c91932fef3c5

        SHA256

        a458db1e508c1742d3754f53bdea16f7686a42972073b50af25b299d6c9ad709

        SHA512

        08dbdd4b9e98408c0f8d29983b01655b12e8cc6734a287c4eac305b1668cf0d1363533ce608f6cc2a3f88f4124037dd46391f67a703ff24384cff40c469e4e9b

      • C:\Users\Admin\AppData\Local\Temp\coml.au3

        Filesize

        872KB

        MD5

        c56b5f0201a3b3de53e561fe76912bfd

        SHA1

        2a4062e10a5de813f5688221dbeb3f3ff33eb417

        SHA256

        237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d

        SHA512

        195b98245bb820085ae9203cdb6d470b749d1f228908093e8606453b027b7d7681ccd7952e30c2f5dd40f8f0b999ccfc60ebb03419b574c08de6816e75710d2c

      • memory/916-190-0x00007FFBE26C0000-0x00007FFBE3D37000-memory.dmp

        Filesize

        22.5MB

      • memory/2124-0-0x00007FFBF3450000-0x00007FFBF35C2000-memory.dmp

        Filesize

        1.4MB

      • memory/2124-7-0x00007FFBF3450000-0x00007FFBF35C2000-memory.dmp

        Filesize

        1.4MB

      • memory/2124-6-0x00007FFBF3450000-0x00007FFBF35C2000-memory.dmp

        Filesize

        1.4MB

      • memory/2124-5-0x00007FFBF3468000-0x00007FFBF3469000-memory.dmp

        Filesize

        4KB

      • memory/2156-19-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-22-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-111-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-26-0x0000000061E00000-0x0000000061EF3000-memory.dmp

        Filesize

        972KB

      • memory/2156-171-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-162-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-21-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB

      • memory/2156-146-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2156-147-0x0000000001120000-0x000000000186C000-memory.dmp

        Filesize

        7.3MB

      • memory/2548-172-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/2548-155-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB

      • memory/3280-151-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/3280-114-0x0000000000500000-0x0000000000A13000-memory.dmp

        Filesize

        5.1MB

      • memory/3280-139-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB

      • memory/3280-136-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/3400-17-0x0000000074601000-0x000000007460F000-memory.dmp

        Filesize

        56KB

      • memory/3400-10-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB

      • memory/3400-12-0x000000007460E000-0x0000000074610000-memory.dmp

        Filesize

        8KB

      • memory/3400-13-0x0000000074601000-0x000000007460F000-memory.dmp

        Filesize

        56KB

      • memory/4372-137-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/4372-125-0x0000000000350000-0x0000000000598000-memory.dmp

        Filesize

        2.3MB

      • memory/4372-148-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/4372-138-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB

      • memory/4620-182-0x0000000072A60000-0x0000000072BDB000-memory.dmp

        Filesize

        1.5MB

      • memory/4620-154-0x00007FFC01A30000-0x00007FFC01C25000-memory.dmp

        Filesize

        2.0MB