Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240611-en
  • submitted
    02/07/2024, 04:50

General

  • Target
    Build.exe
  • Size 821KB
  • Sample240702-ff9j8azgrn
  • SHA256 68a27b558777a677920f88a3c34226e7efb0b87c90c9ff9143c992c98848f38f
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • xred

C2
  • xred.mooo.com

Attributes
  • email

    [email protected]

  • payload_url

    http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

    https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

    http://xred.site50.net/syn/SUpdate.ini

    https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

    https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

    http://xred.site50.net/syn/Synaptics.rar

    https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

    https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

    http://xred.site50.net/syn/SSLLibrary.dll

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • Modiloader family
  • Neshta

    Malware from the neshta family is designed to infect itself into other files to spread itself and cause damage.

  • Neshta family
  • Xred

    Xred is backdoor written in Delphi.

  • Xred family
  • ModiLoader Second Stage 8 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Executes dropped EXE 6 IoCs
  • Modifies system executable filetype association 2 TTPs 1 IoCs
  • Reads user/profile data of web browsers 3 TTPs

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

  • Adds Run key to start application 2 TTPs 3 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies registry class 5 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 18 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Build.exe
    "C:\Users\Admin\AppData\Local\Temp\Build.exe"
    1⤵
    • Checks computer location settings
    • Modifies system executable filetype association
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:2796
    • C:\Users\Admin\AppData\Local\Temp\3582-490\Build.exe
      "C:\Users\Admin\AppData\Local\Temp\3582-490\Build.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:3820
      • C:\Users\Admin\AppData\Local\Temp\._cache_Build.exe
        "C:\Users\Admin\AppData\Local\Temp\._cache_Build.exe"
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4836
        • C:\Windows\svchost.com
          "C:\Windows\svchost.com" "C:\Users\Admin\AppData\Roaming\AdobeART.exe"
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:4444
          • C:\Users\Admin\AppData\Roaming\AdobeART.exe
            C:\Users\Admin\AppData\Roaming\AdobeART.exe
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • System Location Discovery: System Language Discovery
            PID:3604
      • C:\ProgramData\Synaptics\Synaptics.exe
        "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        • Suspicious use of WriteProcessMemory
        PID:4736
        • C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
          "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:528
  • C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
    "C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" /automation -Embedding
    1⤵
    • Checks processor information in registry
    • Enumerates system info in registry
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:5048

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        RdrCEF.exe

        • Path C:\PROGRA~2\Adobe\ACROBA~1\Reader\AcroCEF\RdrCEF.exe
        • Size 9.4MB
        • SHA256 3e815d583236b9cecd912fcc949a301d1e51b609cbb53a2285d08feea305edcd
        • MD5 SHA1 SHA512 SSDEEP

        ._cache_Build.exe

        • Path C:\Users\Admin\AppData\Local\Temp\._cache_Build.exe
        • Size 36KB
        • SHA256 81d622108a3bd126a2ac9f101dcb37bc160141585e3f9e1e1ab7905ee6bc5e07
        • MD5 SHA1 SHA512 SSDEEP

        Build.exe

        • Path C:\Users\Admin\AppData\Local\Temp\3582-490\Build.exe
        • Size 781KB
        • SHA256 78175d8bac0c2a60dcd011b294e4b3127677e134a3a60c154f509b6021ab1244
        • MD5 SHA1 SHA512 SSDEEP

        FH3SbSWu.xlsm

        • Path C:\Users\Admin\AppData\Local\Temp\FH3SbSWu.xlsm
        • Size 17KB
        • SHA256 8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15
        • MD5 SHA1 SHA512 SSDEEP

        tmp5023.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\tmp5023.tmp
        • Size 8B
        • SHA256 483d7bd11c86597aed4813a7bf06f115ed74ab692f37fd49a4a472f6e5a77462
        • MD5 SHA1 SHA512

        svchost.com

        • Path C:\Windows\svchost.com
        • Size 40KB
        • SHA256 16e3fb784a474ccd787e669c3117baec169cd5d3e5e53acf6540889539b8abee
        • MD5 SHA1 SHA512 SSDEEP

        memory/528-186-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/2796-327-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2796-322-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/2796-315-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/3604-321-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/3820-139-0x0000000000400000-0x00000000004C9000-memory.dmp

        memory/3820-13-0x0000000002370000-0x0000000002371000-memory.dmp

        memory/4444-320-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4444-332-0x0000000000400000-0x000000000041B000-memory.dmp

        memory/4736-319-0x0000000000400000-0x00000000004C9000-memory.dmp

        memory/4736-361-0x0000000000400000-0x00000000004C9000-memory.dmp

        memory/4836-173-0x0000000000400000-0x0000000000411000-memory.dmp

        memory/5048-207-0x00007FFA89490000-0x00007FFA894A0000-memory.dmp

        memory/5048-194-0x00007FFA89490000-0x00007FFA894A0000-memory.dmp

        memory/5048-191-0x00007FFA8BC30000-0x00007FFA8BC40000-memory.dmp

        memory/5048-187-0x00007FFA8BC30000-0x00007FFA8BC40000-memory.dmp

        memory/5048-188-0x00007FFA8BC30000-0x00007FFA8BC40000-memory.dmp

        memory/5048-190-0x00007FFA8BC30000-0x00007FFA8BC40000-memory.dmp

        memory/5048-189-0x00007FFA8BC30000-0x00007FFA8BC40000-memory.dmp