Analysis

  • max time kernel
    149s
  • max time network
    123s
  • platform
    windows7_x64
  • resource
    win7-20240705-en
  • resource tags

    arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
  • submitted
    18/08/2024, 10:10

General

  • Target

    a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe

  • Size

    163KB

  • MD5

    a65fab296857d77d1a08696143d2aa71

  • SHA1

    041d443abb82d0953d971366ec0a750705997245

  • SHA256

    836a53224242602bdbe1e715eaf5241030d9c7fc1748257ebda9af61e644fe9b

  • SHA512

    5a98e84e58b912919900d0cf907af0ea99b93fbd3a33e565bad7d241c3d18408791f51088e59d51b12802b29dee086bf6a3b67b8fcd886d05aa388966c7eef8f

  • SSDEEP

    3072:D3Rdrls+uvmgcT4DpRhBDaRPyTFwQlfbzwhhhvCC+NMCViqobKge:+mD0DpvBD6PVSzubBhKJ

Malware Config

Signatures

  • Renames multiple (175) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Drops file in Drivers directory 2 IoCs
  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Enumerates connected drives 3 TTPs 21 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 4 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 10 IoCs

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

  • Runs net.exe
  • Suspicious behavior: EnumeratesProcesses 42 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 46 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe"
    1⤵
    • Drops file in Drivers directory
    • Loads dropped DLL
    • Adds Run key to start application
    • Drops file in Windows directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2140
    • C:\Program Files\Internet Explorer\iexplore.exe
      "C:\Program Files\Internet Explorer\iexplore.exe"
      2⤵
        PID:2660
      • C:\Windows\SysWOW64\net.exe
        net stop "Kingsoft AntiVirus Service"
        2⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2820
        • C:\Windows\SysWOW64\net1.exe
          C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
          3⤵
          • System Location Discovery: System Language Discovery
          PID:2812
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c C:\Users\Admin\AppData\Local\Temp\$$a3488.bat
        2⤵
        • Deletes itself
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2544
        • C:\Users\Admin\AppData\Local\Temp\a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe
          "C:\Users\Admin\AppData\Local\Temp\a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe"
          3⤵
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:2760
      • C:\Windows\Logo1_.exe
        C:\Windows\Logo1_.exe
        2⤵
        • Drops file in Drivers directory
        • Executes dropped EXE
        • Loads dropped DLL
        • Adds Run key to start application
        • Enumerates connected drives
        • Drops file in Program Files directory
        • Drops file in Windows directory
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:2956
        • C:\Program Files\Internet Explorer\iexplore.exe
          "C:\Program Files\Internet Explorer\iexplore.exe"
          3⤵
            PID:2584
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:2680
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              4⤵
              • System Location Discovery: System Language Discovery
              PID:1856
          • C:\Windows\SysWOW64\net.exe
            net stop "Kingsoft AntiVirus Service"
            3⤵
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:1968
            • C:\Windows\SysWOW64\net1.exe
              C:\Windows\system32\net1 stop "Kingsoft AntiVirus Service"
              4⤵
              • System Location Discovery: System Language Discovery
              PID:2912

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\Temp\$$a3488.bat

        Filesize

        614B

        MD5

        4e4a7a9dcf70e88ffe790a02755446c5

        SHA1

        298cf0b8e32a2a9f3571d96dc4fe8dd4482000d0

        SHA256

        931a34d0755695f827f2e95e91a3c1dc6fb247f1ea39b4e3423682dc4b7d5eca

        SHA512

        5599f4cc15acf97331f9253b3826ad0a1640978b11855c4d44c55afc0e7a2291e5c55ae7f7f415d7941aede0a31f86aff8dee2049f1b59975c54022813649d2d

      • C:\Users\Admin\AppData\Local\Temp\a65fab296857d77d1a08696143d2aa71_JaffaCakes118.exe.exe

        Filesize

        72KB

        MD5

        9d88d538ea044cff3c8fd817ede5af2e

        SHA1

        e9079299726f7b7a76844085ad0d2b1383c92aea

        SHA256

        3fda205c1c2f0dd7efe8dae17a2db6b19be5a8fd49e17669a30d28747b272ce3

        SHA512

        3c4ff28f3dc6707ba78d193eecc074127e2f7796958c72920e1845497b65561e62727622dd7a28b0793ba478d401be9b3a82e38527dcca405e2178d7fb055e0e

      • C:\Windows\Logo1_.exe

        Filesize

        91KB

        MD5

        2b59cf32de3b452547fb3e9b54df9737

        SHA1

        263d859f3ee4f5110b13ad5445561b23cbd76c8d

        SHA256

        71821567486df47f30f079080723ebab701c8fd170ede18fe6baeff45dc9721d

        SHA512

        d748d0f0723701541fe769aa2901095bb9729e1b8a61f1a52ba77af4b5aa4f70f70d01e175c5faefd718d65176a7754bd35a31ba6aa37befbfd04f8f91ecaf61

      • C:\Windows\system32\drivers\etc\hosts

        Filesize

        832B

        MD5

        7e3a0edd0c6cd8316f4b6c159d5167a1

        SHA1

        753428b4736ffb2c9e3eb50f89255b212768c55a

        SHA256

        1965854dfa54c72529c88c7d9f41fa31b4140cad04cf03d3f0f2e7601fcbdc6c

        SHA512

        9c68f7f72dfa109fcfba6472a1cced85bc6c2a5481232c6d1d039c88b2f65fb86070aeb26ac23e420c6255daca02ea6e698892f7670298d2c4f741b9e9415c7f

      • \Users\Admin\AppData\Local\Temp\rhcrr.dll

        Filesize

        25KB

        MD5

        0c3550c5d1f4ac9b54c350ce1f415e5c

        SHA1

        20657d19bae7a44c60d31b4eade24d9b8f56128a

        SHA256

        acdbee4aaf7bd8c77201272a4f27783ce3ff9e1969004941108f0f23d40b735a

        SHA512

        240187a739672af0662244d193e41a3272b3445f8babcda305073b7246f64c96888c026d372a6261a0f1ccc109e57f00897a0b54bd58804db6b9d16c327bce6d

      • memory/2140-5-0x0000000000220000-0x0000000000240000-memory.dmp

        Filesize

        128KB

      • memory/2140-8-0x0000000000020000-0x0000000000040000-memory.dmp

        Filesize

        128KB

      • memory/2140-25-0x00000000003A0000-0x00000000003EC000-memory.dmp

        Filesize

        304KB

      • memory/2140-24-0x00000000003A0000-0x00000000003EC000-memory.dmp

        Filesize

        304KB

      • memory/2140-28-0x0000000010000000-0x0000000010017000-memory.dmp

        Filesize

        92KB

      • memory/2140-27-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2140-0-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2140-4-0x0000000010000000-0x0000000010017000-memory.dmp

        Filesize

        92KB

      • memory/2956-45-0x0000000000400000-0x000000000044C000-memory.dmp

        Filesize

        304KB

      • memory/2956-46-0x0000000010000000-0x0000000010017000-memory.dmp

        Filesize

        92KB