Analysis

  • max time kernel
    150s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    26/08/2024, 04:06

General

  • Target
    c23fea1319dc36aab830eda667171516_JaffaCakes118.dll
  • Size 5.0MB
  • Sample240826-en7vxstfrc
  • SHA256 122416dc6f94d72da877fa0fcce4eb6ed14fd775020260b2c5fd3425aef2add0
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Wannacry

    WannaCry is a ransomware cryptoworm.

  • Contacts a large (3300) amount of remote hosts 1 TTPs

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

  • Executes dropped EXE 5 IoCs
  • Modifies file permissions 1 TTPs 3 IoCs
  • Creates a large amount of network flows 1 TTPs

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

  • File and Directory Permissions Modification: Windows File and Directory Permissions Modification 1 TTPs
  • Drops file in Windows directory 39 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 12 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 5 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs
  • Views/modifies file attributes 1 TTPs 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\c23fea1319dc36aab830eda667171516_JaffaCakes118.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4932
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\c23fea1319dc36aab830eda667171516_JaffaCakes118.dll,#1
      2⤵
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4980
      • C:\WINDOWS\mssecsvc.exe
        C:\WINDOWS\mssecsvc.exe
        3⤵
        • Executes dropped EXE
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:3660
        • C:\WINDOWS\tasksche.exe
          C:\WINDOWS\tasksche.exe /i
          4⤵
          • Executes dropped EXE
          • Drops file in Windows directory
          • System Location Discovery: System Language Discovery
          • Suspicious use of WriteProcessMemory
          PID:1612
          • C:\ProgramData\wkwthgmgqegtew611\tasksche.exe
            C:\ProgramData\wkwthgmgqegtew611\tasksche.exe
            5⤵
            • Executes dropped EXE
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:408
            • C:\Windows\SysWOW64\attrib.exe
              attrib +h .
              6⤵
              • System Location Discovery: System Language Discovery
              • Views/modifies file attributes
              PID:2608
            • C:\Windows\SysWOW64\icacls.exe
              icacls . /grant Everyone:F /T /C /Q
              6⤵
              • Modifies file permissions
              • System Location Discovery: System Language Discovery
              PID:2976
          • C:\Windows\SysWOW64\attrib.exe
            attrib +h .
            5⤵
            • System Location Discovery: System Language Discovery
            • Views/modifies file attributes
            PID:1988
          • C:\Windows\SysWOW64\icacls.exe
            icacls . /grant Everyone:F /T /C /Q
            5⤵
            • Modifies file permissions
            • System Location Discovery: System Language Discovery
            PID:2108
  • C:\WINDOWS\mssecsvc.exe
    C:\WINDOWS\mssecsvc.exe -m security
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    PID:1208
  • C:\Windows\system32\cmd.exe
    cmd.exe /c "C:\ProgramData\wkwthgmgqegtew611\tasksche.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4064
    • C:\ProgramData\wkwthgmgqegtew611\tasksche.exe
      C:\ProgramData\wkwthgmgqegtew611\tasksche.exe
      2⤵
      • Executes dropped EXE
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4004
      • C:\Windows\SysWOW64\attrib.exe
        attrib +h .
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:1080
      • C:\Windows\SysWOW64\icacls.exe
        icacls . /grant Everyone:F /T /C /Q
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:1948

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

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        Downloads

        b.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\b.wnry
        • Size 1.4MB
        • SHA256 d5e0e8694ddc0548d8e6b87c83d50f4ab85c1debadb106d6a6a794c3e746f4fa
        • MD5 SHA1 SHA512 SSDEEP

        c.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\c.wnry
        • Size 780B
        • SHA256 ef0ed0b717d1b956eb6c42ba1f4fd2283cf7c8416bed0afd1e8805ee0502f2b4
        • MD5 SHA1 SHA512

        m_bulgarian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_bulgarian.wnry
        • Size 46KB
        • SHA256 40b37e7b80cf678d7dd302aaf41b88135ade6ddf44d89bdba19cf171564444bd
        • MD5 SHA1 SHA512 SSDEEP

        m_chinese (simplified).wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_chinese (simplified).wnry
        • Size 53KB
        • SHA256 845d0e178aeebd6c7e2a2e9697b2bf6cf02028c50c288b3ba88fe2918ea2834a
        • MD5 SHA1 SHA512 SSDEEP

        m_chinese (traditional).wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_chinese (traditional).wnry
        • Size 77KB
        • SHA256 5c7f6ad1ec4bc2c8e2c9c126633215daba7de731ac8b12be10ca157417c97f3a
        • MD5 SHA1 SHA512 SSDEEP

        m_croatian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_croatian.wnry
        • Size 38KB
        • SHA256 3f33734b2d34cce83936ce99c3494cd845f1d2c02d7f6da31d42dfc1ca15a171
        • MD5 SHA1 SHA512 SSDEEP

        m_czech.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_czech.wnry
        • Size 39KB
        • SHA256 5afa4753afa048c6d6c39327ce674f27f5f6e5d3f2a060b7a8aed61725481150
        • MD5 SHA1 SHA512 SSDEEP

        m_danish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_danish.wnry
        • Size 36KB
        • SHA256 a75bb44284b9db8d702692f84909a7e23f21141866adf3db888042e9109a1cb6
        • MD5 SHA1 SHA512 SSDEEP

        m_dutch.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_dutch.wnry
        • Size 36KB
        • SHA256 2c95bef914da6c50d7bdedec601e589fbb4fda24c4863a7260f4f72bd025799c
        • MD5 SHA1 SHA512 SSDEEP

        m_english.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_english.wnry
        • Size 36KB
        • SHA256 26fd072fda6e12f8c2d3292086ef0390785efa2c556e2a88bd4673102af703e5
        • MD5 SHA1 SHA512 SSDEEP

        m_filipino.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_filipino.wnry
        • Size 36KB
        • SHA256 d8489f8c16318e524b45de8b35d7e2c3cd8ed4821c136f12f5ef3c9fc3321324
        • MD5 SHA1 SHA512 SSDEEP

        m_finnish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_finnish.wnry
        • Size 37KB
        • SHA256 1adfee058b98206cb4fbe1a46d3ed62a11e1dee2c7ff521c1eef7c706e6a700e
        • MD5 SHA1 SHA512 SSDEEP

        m_french.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_french.wnry
        • Size 37KB
        • SHA256 9bd38110e6523547aed50617ddc77d0920d408faeed2b7a21ab163fda22177bc
        • MD5 SHA1 SHA512 SSDEEP

        m_german.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_german.wnry
        • Size 36KB
        • SHA256 2adc900fafa9938d85ce53cb793271f37af40cf499bcc454f44975db533f0b61
        • MD5 SHA1 SHA512 SSDEEP

        m_greek.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_greek.wnry
        • Size 47KB
        • SHA256 e13cc9b13aa5074dc45d50379eceb17ee39a0c2531ab617d93800fe236758ca9
        • MD5 SHA1 SHA512 SSDEEP

        m_indonesian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_indonesian.wnry
        • Size 36KB
        • SHA256 23e5e738aad10fb8ef89aa0285269aff728070080158fd3e7792fe9ed47c51f4
        • MD5 SHA1 SHA512 SSDEEP

        m_italian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_italian.wnry
        • Size 36KB
        • SHA256 49f2c739e7d9745c0834dc817a71bf6676ccc24a4c28dcddf8844093aab3df07
        • MD5 SHA1 SHA512 SSDEEP

        m_japanese.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_japanese.wnry
        • Size 79KB
        • SHA256 7e491e7b48d6e34f916624c1cda9f024e86fcbec56acda35e27fa99d530d017e
        • MD5 SHA1 SHA512 SSDEEP

        m_korean.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_korean.wnry
        • Size 89KB
        • SHA256 552aa0f82f37c9601114974228d4fc54f7434fe3ae7a276ef1ae98a0f608f1d0
        • MD5 SHA1 SHA512 SSDEEP

        m_latvian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_latvian.wnry
        • Size 40KB
        • SHA256 a0356696877f2d94d645ae2df6ce6b370bd5c0d6db3d36def44e714525de0536
        • MD5 SHA1 SHA512 SSDEEP

        m_norwegian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_norwegian.wnry
        • Size 36KB
        • SHA256 cb5da96b3dfcf4394713623dbf3831b2a0b8be63987f563e1c32edeb74cb6c3a
        • MD5 SHA1 SHA512 SSDEEP

        m_polish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_polish.wnry
        • Size 38KB
        • SHA256 519ad66009a6c127400c6c09e079903223bd82ecc18ad71b8e5cd79f5f9c053e
        • MD5 SHA1 SHA512 SSDEEP

        m_portuguese.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_portuguese.wnry
        • Size 37KB
        • SHA256 bd9f4b3aedf4f81f37ec0a028aabcb0e9a900e6b4de04e9271c8db81432e2a66
        • MD5 SHA1 SHA512 SSDEEP

        m_romanian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_romanian.wnry
        • Size 50KB
        • SHA256 70c0f32ed379ae899e5ac975e20bbbacd295cf7cd50c36174d2602420c770ac1
        • MD5 SHA1 SHA512 SSDEEP

        m_russian.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_russian.wnry
        • Size 46KB
        • SHA256 02932052fafe97e6acaaf9f391738a3a826f5434b1a013abbfa7a6c1ade1e078
        • MD5 SHA1 SHA512 SSDEEP

        m_slovak.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_slovak.wnry
        • Size 40KB
        • SHA256 e64178e339c8e10eac17a236a67b892d0447eb67b1dcd149763dad6fd9f72729
        • MD5 SHA1 SHA512 SSDEEP

        m_spanish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_spanish.wnry
        • Size 36KB
        • SHA256 72f20024b2f69b45a1391f0a6474e9f6349625ce329f5444aec7401fe31f8de1
        • MD5 SHA1 SHA512 SSDEEP

        m_swedish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_swedish.wnry
        • Size 37KB
        • SHA256 146f61db72297c9c0facffd560487f8d6a2846ecec92ecc7db19c8d618dbc3a4
        • MD5 SHA1 SHA512 SSDEEP

        m_turkish.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_turkish.wnry
        • Size 41KB
        • SHA256 6db650836d64350bbde2ab324407b8e474fc041098c41ecac6fd77d632a36415
        • MD5 SHA1 SHA512 SSDEEP

        m_vietnamese.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\msg\m_vietnamese.wnry
        • Size 91KB
        • SHA256 1f21838b244c80f8bed6f6977aa8a557b419cf22ba35b1fd4bf0f98989c5bdf8
        • MD5 SHA1 SHA512 SSDEEP

        r.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\r.wnry
        • Size 864B
        • SHA256 402751fa49e0cb68fe052cb3db87b05e71c1d950984d339940cf6b29409f2a7c
        • MD5 SHA1 SHA512

        s.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\s.wnry
        • Size 656KB
        • SHA256 90e8f0399ebb56ba31d1d4c90c6a02c111e4a0ec75758eacf9fd86c50068c49e
        • MD5 SHA1 SHA512 SSDEEP

        taskdl.exe

        • Path C:\ProgramData\wkwthgmgqegtew611\taskdl.exe
        • Size 20KB
        • SHA256 4a468603fdcb7a2eb5770705898cf9ef37aade532a7964642ecd705a74794b79
        • MD5 SHA1 SHA512 SSDEEP

        taskse.exe

        • Path C:\ProgramData\wkwthgmgqegtew611\taskse.exe
        • Size 20KB
        • SHA256 2ca2d550e603d74dedda03156023135b38da3630cb014e3d00b1263358c5f00d
        • MD5 SHA1 SHA512 SSDEEP

        u.wnry

        • Path C:\ProgramData\wkwthgmgqegtew611\u.wnry
        • Size 240KB
        • SHA256 b9c5d4339809e0ad9a00d4d3dd26fdf44a32819a54abf846bb9b560d81391c25
        • MD5 SHA1 SHA512 SSDEEP

        mssecsvc.exe

        • Path C:\Windows\mssecsvc.exe
        • Size 3.6MB
        • SHA256 4f8ba50e5da734b571f47ae910cedca5b68a383c227e910006d5109020bd4408
        • MD5 SHA1 SHA512 SSDEEP

        tasksche.exe

        • Path C:\Windows\tasksche.exe
        • Size 3.4MB
        • SHA256 7f4169701ac246fead1da2c73b5fa7fc686aa21a0214ec040096f0af599e1328
        • MD5 SHA1 SHA512 SSDEEP