Analysis

  • max time kernel
    119s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240708-en
  • resource tags

    arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
  • submitted
    20-08-2024 02:01

General

  • Target

    c8e12fb10fc9963c49e4d074cc5ba2b0N.exe

  • Size

    392KB

  • MD5

    c8e12fb10fc9963c49e4d074cc5ba2b0

  • SHA1

    676786db56b6aff6a05da8b13cbd5069e03aada0

  • SHA256

    22c91158f3bb3e30cd36ff983fb2f8874cc436466e3938db0ef5e45e8fd26338

  • SHA512

    344baa3d36885077c283e06ff967803df97bb87f09d634f0de3650c6a91f16f27dfd47952703107d086a37be8de38393c8d535fcbf1772e4297e0ae2ac86cf48

  • SSDEEP

    3072:V+ESQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lbaV2:DPA6wxmuJspr2lb6

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 5 IoCs
  • UPX packed file 16 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 8 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 22 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 39 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\c8e12fb10fc9963c49e4d074cc5ba2b0N.exe
    "C:\Users\Admin\AppData\Local\Temp\c8e12fb10fc9963c49e4d074cc5ba2b0N.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2876
    • C:\Users\Admin\AppData\Local\Temp\c8e12fb10fc9963c49e4d074cc5ba2b0N.exe
      "C:\Users\Admin\AppData\Local\Temp\c8e12fb10fc9963c49e4d074cc5ba2b0N.exe"
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2100
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\RDBFA.bat" "
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:948
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f
          4⤵
          • Adds Run key to start application
          • System Location Discovery: System Language Discovery
          PID:3100
      • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
        "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3124
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:10148
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:10224
          • C:\Windows\syswow64\svchost.exe
            C:\Windows\syswow64\svchost.exe
            5⤵
            • Adds policy Run key to start application
            • Drops file in Program Files directory
            • System Location Discovery: System Language Discovery
            PID:2192

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\RDBFA.bat

    Filesize

    139B

    MD5

    0654f004b2e314bad7f75867e91da37d

    SHA1

    4232c22e7340b12108d86e3cb35ed288a3dbc7f1

    SHA256

    ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

    SHA512

    dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

  • \Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    392KB

    MD5

    6feacccfe46d179455ceb5d2167ab728

    SHA1

    c432619fb94df6bdbb3eb02364a09de53aca31d0

    SHA256

    a153bc56feddfd4ce2e4d30d6b830dd1ec5a17dc54505fca8c862ba9dc634675

    SHA512

    0c3918e64e4a4e12918b50feda904f4f79971f7b1fd4c449052fd469a16e737cc08f15f1468985bf24bf0a0dbff8be3c9aa5ee590687268f92150f0d1596b408

  • memory/2100-53489-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-106979-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53481-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53487-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2100-53688-0x00000000033E0000-0x0000000003442000-memory.dmp

    Filesize

    392KB

  • memory/2100-53485-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53483-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53687-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53490-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53492-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2100-53533-0x00000000033E0000-0x0000000003442000-memory.dmp

    Filesize

    392KB

  • memory/2100-53524-0x00000000033E0000-0x0000000003442000-memory.dmp

    Filesize

    392KB

  • memory/2100-53534-0x00000000033E0000-0x0000000003442000-memory.dmp

    Filesize

    392KB

  • memory/2100-53526-0x00000000033E0000-0x0000000003442000-memory.dmp

    Filesize

    392KB

  • memory/2876-223-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2876-53491-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2876-0-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/2876-3-0x0000000000250000-0x0000000000251000-memory.dmp

    Filesize

    4KB

  • memory/2876-222-0x0000000000404000-0x0000000000405000-memory.dmp

    Filesize

    4KB

  • memory/3124-53690-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/3124-106973-0x0000000000400000-0x0000000000462000-memory.dmp

    Filesize

    392KB

  • memory/10148-106990-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/10224-106971-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB

  • memory/10224-106982-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB