Analysis

  • max time kernel
    110s
  • max time network
    98s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20241007-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22/11/2024, 14:54

General

  • Target

    f5e1507c38c7dba45a64f1e02f3dc81e526bd72a42c9d16c29152f3894002e6fN.exe

  • Size

    64KB

  • MD5

    5ffa657143c65d04d1080a46c0506e10

  • SHA1

    8c5c2e30834e3b34bb198d0afdc52cdb97ce2762

  • SHA256

    f5e1507c38c7dba45a64f1e02f3dc81e526bd72a42c9d16c29152f3894002e6f

  • SHA512

    8ba7056e47d375c02f4084fb9cbcbea01fba16891dff2d1e7d6935c65f953c717a7442442b05ee467f7540d3209aff0288382ee183ced840971912e622680fa4

  • SSDEEP

    1536:8g/9T8ROcQupqqusN3mrS/ztMhkywRFUnTmc5n4IIIIIIIIIIIIIIIIII/IIIII7:8g585LpPCrQt7F84IIIIIIIIIIIIIIIN

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs
  • Disables RegEdit via registry modification 2 IoCs
  • ASPack v2.12-2.42 1 IoCs

    Detects executables packed with ASPack v2.12-2.42

  • Executes dropped EXE 2 IoCs
  • Modifies system executable filetype association 2 TTPs 8 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Windows directory 42 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

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

  • Modifies data under HKEY_USERS 13 IoCs
  • Modifies registry class 12 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f5e1507c38c7dba45a64f1e02f3dc81e526bd72a42c9d16c29152f3894002e6fN.exe
    "C:\Users\Admin\AppData\Local\Temp\f5e1507c38c7dba45a64f1e02f3dc81e526bd72a42c9d16c29152f3894002e6fN.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Modifies visiblity of hidden/system files in Explorer
    • Disables RegEdit via registry modification
    • Modifies system executable filetype association
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4196
    • C:\Windows\SMSSja.exe
      "C:\Windows\SMSSja.exe" -xInstallOurNiceServicesYes
      2⤵
      • Modifies WinLogon for persistence
      • Modifies visiblity of hidden/system files in Explorer
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:4304
  • C:\Windows\SMSSja.exe
    C:\Windows\SMSSja.exe -xStartOurNiceServicesYes
    1⤵
    • Modifies WinLogon for persistence
    • Executes dropped EXE
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    PID:64

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\SMSSja.exe

    Filesize

    64KB

    MD5

    5ffa657143c65d04d1080a46c0506e10

    SHA1

    8c5c2e30834e3b34bb198d0afdc52cdb97ce2762

    SHA256

    f5e1507c38c7dba45a64f1e02f3dc81e526bd72a42c9d16c29152f3894002e6f

    SHA512

    8ba7056e47d375c02f4084fb9cbcbea01fba16891dff2d1e7d6935c65f953c717a7442442b05ee467f7540d3209aff0288382ee183ced840971912e622680fa4

  • memory/64-73-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/64-36-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/64-28-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-29-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-31-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-33-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-35-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-27-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-37-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-40-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-42-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-44-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-72-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4196-74-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB

  • memory/4304-7-0x0000000000400000-0x000000000051F000-memory.dmp

    Filesize

    1.1MB