Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/08/2024, 05:09

General

  • Target
    d4ecbe36b3a3d4b36eb793716fdfe58f662b34007a101ada29d78d62f0649cc5.exe
  • Size 6.5MB
  • Sample240818-ftbkcaxcng
  • SHA256 d4ecbe36b3a3d4b36eb793716fdfe58f662b34007a101ada29d78d62f0649cc5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • urelas

C2
  • 218.54.31.165

  • 218.54.31.226

Signatures

  • Urelas

    Urelas is a trojan targeting card games.

  • Checks computer location settings 2 TTPs 3 IoCs

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

  • Executes dropped EXE 3 IoCs
  • UPX packed file 3 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 30 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d4ecbe36b3a3d4b36eb793716fdfe58f662b34007a101ada29d78d62f0649cc5.exe
    "C:\Users\Admin\AppData\Local\Temp\d4ecbe36b3a3d4b36eb793716fdfe58f662b34007a101ada29d78d62f0649cc5.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:3052
    • C:\Users\Admin\AppData\Local\Temp\cucos.exe
      "C:\Users\Admin\AppData\Local\Temp\cucos.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:60
      • C:\Users\Admin\AppData\Local\Temp\wyfyov.exe
        "C:\Users\Admin\AppData\Local\Temp\wyfyov.exe" OK
        3⤵
        • Checks computer location settings
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:1264
        • C:\Users\Admin\AppData\Local\Temp\ziybf.exe
          "C:\Users\Admin\AppData\Local\Temp\ziybf.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:5100
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_vslite.bat" "
          4⤵
          • System Location Discovery: System Language Discovery
          PID:3692
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\_vslite.bat" "
      2⤵
      • System Location Discovery: System Language Discovery
      PID:960

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        _vslite.bat

        • Path C:\Users\Admin\AppData\Local\Temp\_vslite.bat
        • Size 224B
        • SHA256 4cd97145e3d0ce9fd9a836d38afe3d7cbc05d52d64899b86530f4767c4a5aae2
        • MD5 SHA1 SHA512

        _vslite.bat

        • Path C:\Users\Admin\AppData\Local\Temp\_vslite.bat
        • Size 340B
        • SHA256 b61f72b9612192d858635eef788f7ae74b4801069c90a9e36c122e7dcd62d7ec
        • MD5 SHA1 SHA512

        cucos.exe

        • Path C:\Users\Admin\AppData\Local\Temp\cucos.exe
        • Size 6.5MB
        • SHA256 460ef8b3ab7d665e1c9862f42033f11e5cb95ea04c2958d0442e2fef36f104f3
        • MD5 SHA1 SHA512 SSDEEP

        gbp.ini

        • Path C:\Users\Admin\AppData\Local\Temp\gbp.ini
        • Size 104B
        • SHA256 30f820bb1ca6c20bcd77113c7377e01f31cdf0ec5b64864f22887d41a9bf3c7a
        • MD5 SHA1 SHA512

        golfinfo.ini

        • Path C:\Users\Admin\AppData\Local\Temp\golfinfo.ini
        • Size 512B
        • SHA256 a3a477633893441e9346fa78972a699194428b72be0b4affd69c9cbaca9493e3
        • MD5 SHA1 SHA512

        ziybf.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ziybf.exe
        • Size 459KB
        • SHA256 f8aa6c53eeb5dbd4ca3619b5c948e50cf94dd7550458c8908d2588e9ff16ae8a
        • MD5 SHA1 SHA512 SSDEEP

        memory/60-32-0x0000000002A60000-0x0000000002A61000-memory.dmp

        memory/60-31-0x0000000002A30000-0x0000000002A31000-memory.dmp

        memory/60-30-0x0000000000FA0000-0x0000000000FA1000-memory.dmp

        memory/60-33-0x0000000002A70000-0x0000000002A71000-memory.dmp

        memory/60-34-0x0000000002A80000-0x0000000002A81000-memory.dmp

        memory/60-29-0x0000000000F90000-0x0000000000F91000-memory.dmp

        memory/60-25-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/60-35-0x0000000002A90000-0x0000000002A91000-memory.dmp

        memory/60-36-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/60-48-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/60-39-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/60-40-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/1264-57-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/1264-50-0x0000000000F40000-0x0000000000F41000-memory.dmp

        memory/1264-73-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/1264-59-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/1264-51-0x0000000000F50000-0x0000000000F51000-memory.dmp

        memory/1264-52-0x0000000000FB0000-0x0000000000FB1000-memory.dmp

        memory/1264-53-0x0000000000FF0000-0x0000000000FF1000-memory.dmp

        memory/1264-54-0x0000000001000000-0x0000000001001000-memory.dmp

        memory/1264-55-0x0000000001010000-0x0000000001011000-memory.dmp

        memory/1264-56-0x0000000001020000-0x0000000001021000-memory.dmp

        memory/3052-11-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/3052-4-0x0000000002B20000-0x0000000002B21000-memory.dmp

        memory/3052-0-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/3052-7-0x0000000002C90000-0x0000000002C91000-memory.dmp

        memory/3052-27-0x0000000000526000-0x000000000087A000-memory.dmp

        memory/3052-6-0x0000000002C50000-0x0000000002C51000-memory.dmp

        memory/3052-5-0x0000000002B30000-0x0000000002B31000-memory.dmp

        memory/3052-8-0x0000000002CA0000-0x0000000002CA1000-memory.dmp

        memory/3052-14-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/3052-2-0x0000000001020000-0x0000000001021000-memory.dmp

        memory/3052-1-0x0000000000526000-0x000000000087A000-memory.dmp

        memory/3052-26-0x0000000000400000-0x0000000000EEC000-memory.dmp

        memory/3052-3-0x0000000002B10000-0x0000000002B11000-memory.dmp

        memory/5100-72-0x0000000000400000-0x0000000000599000-memory.dmp

        memory/5100-76-0x0000000000400000-0x0000000000599000-memory.dmp