Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240704-en
  • resource tags

    arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
  • submitted
    22-09-2024 01:05

General

  • Target

    f0fa71254202486a4d3fbf5085a93be8_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    f0fa71254202486a4d3fbf5085a93be8

  • SHA1

    66607b832d867c09c86e001ccc99c560d3a2e817

  • SHA256

    69f8b23f36c5fa8f8f67d17af01709292e0c29bd49c3c018b2410d869aa7fd5e

  • SHA512

    fc42144a4b847225e9fb8559f325c49fbf92607c485a148163f8b1612dd2c16e8a1ad92c062d2d31861e3a9b953755d6cb45140203b102b79bdc3f404b244f37

  • SSDEEP

    24576:SbLgddQhfdmMSirYbcMNgef0QeQjG/D8kIqRYoAdNLKz6626M+vbOSSqTPV:SnAQqMSPbcBVQej/1INRx+TSqTd

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3178) 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\f0fa71254202486a4d3fbf5085a93be8_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2820
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\f0fa71254202486a4d3fbf5085a93be8_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2104
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        PID:2496
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2720
  • 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

    227456eb9bea44c4c3db307bf8dd4b0d

    SHA1

    02a2db460828ffc5677ec6b1b9634b4601852cdb

    SHA256

    b583df88836c30588583d167fd72da896706ff725c07a1ee7243b33a04474e55

    SHA512

    038ae686871ddb835fb34afa49853dfb092b3845f7a47fe3f58b532118cab65bc38ad4f73595e119c7fa75bfa5d3bdcb4a59ebb13a06a66fdbdd7c1e9e1d97da

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    98cd60a861aec71fd3207002df70ca53

    SHA1

    b2b4b10a286cc7b482dbb39fad72dd7a8422a45a

    SHA256

    9e99c7816bdd4af43590c251536825d1aba3f2dfe165484fa65440364db0d8b7

    SHA512

    95b97f7f72502127583b86a14508a9968cf4d41e7a89473928ee5c1847ea8efd74cff261ef2ef06ae84293d36e2644eb579fa8f960a8fe3cfedf105268684e3e