Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240729-en
  • resource tags

    arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
  • submitted
    15-09-2024 06:17

General

  • Target

    e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    e1deb818ce0ec6b71634d1c46d41d7b4

  • SHA1

    064c8156b32115de90de97015d5ac61c3ac65045

  • SHA256

    c57649669ee9311d3e52ee536a38bb9731279f9e657718cd22110be01267a432

  • SHA512

    75b0b55e62ba42e03eb5a200febcef0fc218dd84887526e62bbde0d15ad1422d37036214a9f23978112e57fc779c209ecaff3a87a29abe56afa1dbf16c91df78

  • SSDEEP

    49152:SnAQqMSPbcBVQej/1INRx+TSqTdX1HkQo6SAARdhnvxJM0H9PAMEc:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P5

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3258) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Executes dropped EXE 3 IoCs
  • Creates a large amount of network flows 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops file in System32 directory 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • 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 24 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\e1deb818ce0ec6b71634d1c46d41d7b4_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3024
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:1300
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2224
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:2952

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    c6c5d82b78b441d3ea620ad93f82387b

    SHA1

    01d183659885faa8fe1adbcec810b80b679e5800

    SHA256

    c3bbf2ebdffac24fda24289d47ba01b50d85f5fdd0e7d7d9d389427256fda14f

    SHA512

    fd0115f47aa373c74c1f727fbaac3c2fa2ae877ae69d587668297e174a1f47e5a20f5b0f5ddd4e6c7e6fd5a74a3793ae1287de4695a0f860841bfbe76236007f

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    df3b3b0fec9986f94729d695c0def7d8

    SHA1

    e8f57b3ed28c6079988319d037ee26c6f435251d

    SHA256

    d67beea4e4b3fdac097709114a9b4a6a1218d0d5f65cc10b45ca0a24dd41f38b

    SHA512

    d0fe55b1df92105a2f1df446bf3d87d82c93d145631b5480c76b6d1a900f7aaa63d17bcff6c9fc0f77282172dc531834870f08f850010f3757b1fc4f265b87b9