Analysis

  • max time kernel
    149s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    27/03/2024, 03:14

General

  • Target
    e0a0ac0e36d47e4f81d350e8ed864d9c.exe
  • Size 251KB
  • Sample240327-drccraed8x
  • SHA256 462c166ce9078d03092715fad947d10f51abd1404fa0748c1e146b8e35ade699
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 7 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 46 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 64 IoCs
  • Suspicious use of SetWindowsHookEx 7 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e0a0ac0e36d47e4f81d350e8ed864d9c.exe
    "C:\Users\Admin\AppData\Local\Temp\e0a0ac0e36d47e4f81d350e8ed864d9c.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:3672
    • C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
      "C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Drops file in System32 directory
      • Suspicious use of WriteProcessMemory
      PID:4208
      • C:\Users\Admin\AppData\Local\Temp\RarSFX0\server.exe
        "C:\Users\Admin\AppData\Local\Temp\RarSFX0\server.exe"
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5040
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\RarSFX0\sil.bat
          4⤵
            PID:4868
        • C:\Windows\SysWOW64\game.exe
          C:\Windows\system32\game.exe
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Adds Run key to start application
          • Installs/modifies Browser Helper Object
          • Drops file in System32 directory
          • Modifies registry class
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of SendNotifyMessage
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3640
          • C:\Program Files (x86)\Internet Explorer\ielowutil.exe
            "C:\Program Files (x86)\Internet Explorer\ielowutil.exe" -CLSID:{0002DF01-0000-0000-C000-000000000046} about:blank
            4⤵
              PID:1672

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            game.exe

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\game.exe
            • Size 428KB
            • SHA256 e89324cdf0ebffe7a1f4cc9d8389adef86210abbbdc89cef2132cb9cddd07806
            • MD5 SHA1 SHA512 SSDEEP

            gamehk.dll

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\gamehk.dll
            • Size 24KB
            • SHA256 03d161e126fe74112cd698c23887d76aa47ed5b84251e3dcec0a5e96be3270b5
            • MD5 SHA1 SHA512 SSDEEP

            gamewb.dll

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\gamewb.dll
            • Size 40KB
            • SHA256 e5351dc04a285c7275cc7c7e136d996463bae626bd1a2330c9441dead63df75c
            • MD5 SHA1 SHA512 SSDEEP

            inst.dat

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\inst.dat
            • Size 996B
            • SHA256 7ee530dda338758e4517ffd728898305c0029fd59ac3b0faf85c484b4c4e3a7d
            • MD5 SHA1 SHA512

            pk.bin

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\pk.bin
            • Size 4KB
            • SHA256 78d543ff4464d4eebea6d374fa4487046ef666976ac3ad26cd920729edcf494e
            • MD5 SHA1 SHA512 SSDEEP

            rinst.exe

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\rinst.exe
            • Size 7KB
            • SHA256 446658dd5af649857fff445c600f26cdc1d0c19c86a080f312b89b1890182092
            • MD5 SHA1 SHA512 SSDEEP

            server.exe

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\server.exe
            • Size 28KB
            • SHA256 f15ed8f3a1530972853d3f5f94b05bbb5d99fe03e0817aa379f3cd984319ef90
            • MD5 SHA1 SHA512 SSDEEP

            sil.bat

            • Path C:\Users\Admin\AppData\Local\Temp\RarSFX0\sil.bat
            • Size 164B
            • SHA256 b641b0a8c777a214e3f6119c60e321cc7148065adf397da158bc6193f85305aa
            • MD5 SHA1 SHA512

            game.exe

            • Path C:\Windows\SysWOW64\game.exe
            • Size 428KB
            • SHA256 a8cea204954ffa11134f0be8ac0fed6c9939b54c369cc7f8312059c0a601c390
            • MD5 SHA1 SHA512 SSDEEP

            gamehk.dll

            • Path C:\Windows\SysWOW64\gamehk.dll
            • Size 24KB
            • SHA256 93c0e7f41d5d74217189e4cc2d5cdb8f97d8e5eeef0a0dcf4cecd67e3393682c
            • MD5 SHA1 SHA512 SSDEEP

            gamewb.dll

            • Path C:\Windows\SysWOW64\gamewb.dll
            • Size 40KB
            • SHA256 3285df0c25d4b9b6d5ccbe166a3ce3d04f5cb3a0d61c8bf29bf5f953e51b0977
            • MD5 SHA1 SHA512 SSDEEP

            pk.bin

            • Path C:\Windows\SysWOW64\pk.bin
            • Size 4KB
            • SHA256 87d37d4caea29c2293cf59f94c0a1f352b9485e9f8f6ff094cb8c5e3994876ee
            • MD5 SHA1 SHA512 SSDEEP

            memory/3672-54-0x0000000000400000-0x0000000000412000-memory.dmp