Analysis

  • max time kernel
    152s
  • max time network
    160s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/06/2024, 11:19

General

  • Target
    #!~#0Pen_4422_P@$SW0rd~!!$/Setup.exe
  • Size 94KB
  • Sample240615-netflssdkk
  • SHA256 040d121a3179f49cd3f33f4bc998bc8f78b7f560bfd93f279224d69e76a06e92
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • stealc

rc4.plain

Extracted

Family
  • amadey

Version
  • 4.30

Botnet
  • ffb1b9

C2
  • http://proresupdate.com

Attributes
  • install_dir

    4bbb72a446

  • install_file

    Hkbsse.exe

  • strings_key

    1ebbd218121948a356341fff55521237

  • url_paths

    /h9fmdW5/index.php

rc4.plain

Signatures

  • Amadey

    Amadey bot is a simple trojan bot primarily used for collecting reconnaissance information.

  • 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.

  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 38 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 31 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_4422_P@$SW0rd~!!$\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\#!~#0Pen_4422_P@$SW0rd~!!$\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:4416
    • C:\Windows\SysWOW64\netsh.exe
      C:\Windows\SysWOW64\netsh.exe
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:1272
      • 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:2344
        • C:\ProgramData\FHCAFIDBKE.exe
          "C:\ProgramData\FHCAFIDBKE.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:1944
          • 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:4336
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
                PID:2388
          • C:\ProgramData\DAECAECFCA.exe
            "C:\ProgramData\DAECAECFCA.exe"
            4⤵
            • Suspicious use of SetThreadContext
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:3472
            • 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:1324
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                6⤵
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:2484
    • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
      "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4440 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3284
      • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
        "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --mojo-platform-channel-handle=2292 --field-trial-handle=2248,i,10247514684337323751,15511974759131734137,262144 --variations-seed-version /prefetch:3
        1⤵
          PID:4600

        Network

              MITRE ATT&CK Enterprise v15

              Replay Monitor

              Loading Replay Monitor...

              Downloads

              mozglue.dll

              • Path C:\ProgramData\BKFCBFCBFBKE\mozglue.dll
              • Size 593KB
              • SHA256 ba06a6ee0b15f5be5c4e67782eec8b521e36c107a329093ec400fe0404eb196a
              • MD5 SHA1 SHA512 SSDEEP

              nss3.dll

              • Path C:\ProgramData\BKFCBFCBFBKE\nss3.dll
              • Size 2.0MB
              • SHA256 ac5c92fe6c51cfa742e475215b83b3e11a4379820043263bf50d4068686c6fa5
              • MD5 SHA1 SHA512 SSDEEP

              DAECAECFCA.exe

              • Path C:\ProgramData\DAECAECFCA.exe
              • Size 2.3MB
              • SHA256 5706c6f5421a6a34fdcb67e9c9e71283c8fc1c33499904519cbdc6a21e6b071c
              • MD5 SHA1 SHA512 SSDEEP

              FHCAFIDBKE.exe

              • Path C:\ProgramData\FHCAFIDBKE.exe
              • Size 8.6MB
              • SHA256 376e1802b979514ba0e9c73933a8c6a09dd3f1d2a289f420c2202e64503d08a7
              • MD5 SHA1 SHA512 SSDEEP

              SCT Auditing Pending Reports

              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\SCT Auditing Pending Reports
              • Size 2B
              • SHA256 4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945
              • MD5 SHA1 SHA512

              Sdch Dictionaries

              • Path C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Network\Sdch Dictionaries
              • Size 40B
              • SHA256 6028bd681dbf11a0a58dde8a0cd884115c04caa59d080ba51bde1b086ce0079d
              • MD5 SHA1 SHA512

              2c7b7536

              • Path C:\Users\Admin\AppData\Local\Temp\2c7b7536
              • Size 6.8MB
              • SHA256 0de93f8009f4c9caf8587b848e17448dabf36072e6e722620eecc1740945349f
              • MD5 SHA1 SHA512 SSDEEP

              5dc914f1

              • Path C:\Users\Admin\AppData\Local\Temp\5dc914f1
              • Size 951KB
              • SHA256 d8617477c800cc10f9b52e90b885117a27266831fb5033647b6b6bd6025380a8
              • MD5 SHA1 SHA512 SSDEEP

              5e909f81

              • Path C:\Users\Admin\AppData\Local\Temp\5e909f81
              • Size 1.1MB
              • SHA256 e2aaaa1a0431aab1616e2b612e9b68448107e6ce71333f9c0ec1763023b72b2a
              • MD5 SHA1 SHA512 SSDEEP

              5eed9e14

              • Path C:\Users\Admin\AppData\Local\Temp\5eed9e14
              • Size 736KB
              • SHA256 4b6f5473cd929237aa9637c5dcaec05b60c58b705f0895715500f95cff77c89d
              • MD5 SHA1 SHA512 SSDEEP

              5f3521a2

              • Path C:\Users\Admin\AppData\Local\Temp\5f3521a2
              • Size 1.1MB
              • SHA256 148905accc86beea722bc1a5f701393d9e24431f7dfe608d4b51d5c03e746bb7
              • MD5 SHA1 SHA512 SSDEEP

              coml.au3

              • Path C:\Users\Admin\AppData\Local\Temp\coml.au3
              • Size 872KB
              • SHA256 237d1bca6e056df5bb16a1216a434634109478f882d3b1d58344c801d184f95d
              • MD5 SHA1 SHA512 SSDEEP

              memory/1272-15-0x00000000746A1000-0x00000000746AF000-memory.dmp

              memory/1272-12-0x00000000746AE000-0x00000000746B0000-memory.dmp

              memory/1272-13-0x00000000746A1000-0x00000000746AF000-memory.dmp

              memory/1272-10-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/1324-163-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/1944-130-0x0000000000880000-0x0000000000D93000-memory.dmp

              memory/1944-145-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/1944-144-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/1944-160-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/2344-21-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/2344-19-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-165-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-159-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-67-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-26-0x0000000061E00000-0x0000000061EF3000-memory.dmp

              memory/2344-22-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-155-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2344-151-0x0000000000CB0000-0x00000000013FC000-memory.dmp

              memory/2388-187-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/2388-185-0x0000000000BD0000-0x0000000000C41000-memory.dmp

              memory/2484-186-0x0000000000400000-0x000000000040A000-memory.dmp

              memory/2484-182-0x00007FF9D3C10000-0x00007FF9D5287000-memory.dmp

              memory/3472-141-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/3472-156-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/3472-131-0x0000000000090000-0x00000000002D8000-memory.dmp

              memory/3472-142-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/4336-166-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/4336-177-0x0000000072A70000-0x0000000072BEB000-memory.dmp

              memory/4336-164-0x00007FF9F56F0000-0x00007FF9F58E5000-memory.dmp

              memory/4416-0-0x00007FF9E6CE0000-0x00007FF9E6E52000-memory.dmp

              memory/4416-5-0x00007FF9E6CF8000-0x00007FF9E6CF9000-memory.dmp

              memory/4416-6-0x00007FF9E6CE0000-0x00007FF9E6E52000-memory.dmp

              memory/4416-7-0x00007FF9E6CE0000-0x00007FF9E6E52000-memory.dmp