Analysis

  • max time kernel
    150s
  • max time network
    150s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    20-05-2024 13:22

General

  • Target

    5f4c3473fd212376548903295eb8a4e2_JaffaCakes118.dll

  • Size

    5.0MB

  • MD5

    5f4c3473fd212376548903295eb8a4e2

  • SHA1

    cb41c7d8e759feed8d8752d01c447d20f486369e

  • SHA256

    5dc870dcb3aa373a6d019fc664ac9301a47d38747494e1926ab7830c57136b1a

  • SHA512

    127d9582d805fe3cd82a03fdeb2f032fb2a2a5e53d8d7c9744908e64db0db890d7914a34526036818b76d64a86979feb5dbb857f6687b61acb824ac8fa5d7f97

  • SSDEEP

    98304:+DqPoBhz1aRxcSUDk36SAEdhvxWa9P593R8yA:+DqPe1Cxcxk3ZAEUadzR8y

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3326) 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
  • 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\5f4c3473fd212376548903295eb8a4e2_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2220
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\5f4c3473fd212376548903295eb8a4e2_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • Suspicious use of WriteProcessMemory
      PID:1672
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        PID:2208
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          PID:2732
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • Drops file in System32 directory
    • Modifies data under HKEY_USERS
    PID:2684

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Windows\mssecsvc.exe

    Filesize

    3.6MB

    MD5

    1e49ec3322261d919e0070973b634f0f

    SHA1

    4cc76abc0a88952478c079dd0d2e0b33a32b82ea

    SHA256

    97eda67ce9c099ec7782170d6aed3103e87d23778adab79bf8cfdd52c3d0d965

    SHA512

    b3e01e2e2a38e93eebfdfc24240751e3ba650ee0715ee1fe586acee77d6e31dd9a3821875c4e61647d016650145b189ced3e753e0828856d12a8bd991084a9ed

  • C:\Windows\tasksche.exe

    Filesize

    3.4MB

    MD5

    e1caa5bc7400f440ab84f95df6569fdf

    SHA1

    5e0a8b91fb4d62b596cc7b94e69c61514af3457a

    SHA256

    9179b360e2a699779a60f4c4a76868a17c3556b510016f94190e3145615edd33

    SHA512

    128163b5ac10fa5cda1cc24b1a48b4eb7a8141f574fc1227ce569e4b89a90b3e2104a7194a31acf280db36945d01e8d2444a1b52c54753a5fd3a5432ce760320