Analysis

  • max time kernel
    148s
  • max time network
    96s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    08/04/2024, 19:09

General

  • Target
    e83196ac3cf2030628c56c2da16c7854_JaffaCakes118.exe
  • Size 260KB
  • Sample240408-xtwc7ahc25
  • SHA256 883c519ad7a66208741ff463d9c1db45bb7ab2242794aa82e95ed369442ad5c2
  • MD5 SHA1 SHA512 SSDEEP
Score
7/10

Malware Config

Signatures

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Installs/modifies Browser Helper Object 2 TTPs 2 IoCs

    BHOs are DLL modules which act as plugins for Internet Explorer.

  • Drops file in System32 directory 2 IoCs
  • Drops file in Program Files directory 3 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Program crash 1 IoCs
  • Modifies registry class 64 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e83196ac3cf2030628c56c2da16c7854_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\e83196ac3cf2030628c56c2da16c7854_JaffaCakes118.exe"
    1⤵
    • Loads dropped DLL
    • Installs/modifies Browser Helper Object
    • Drops file in System32 directory
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4020
    • C:\Program Files (x86)\RichVideoCodec\escan.exe
      escan.exe
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4692
      • C:\Program Files (x86)\RichVideoCodec\escan.exe
        escan.exe q
        3⤵
        • Executes dropped EXE
        PID:2368
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2368 -s 820
          4⤵
          • Program crash
          PID:1100
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 2368 -ip 2368
    1⤵
      PID:608

    Network

          MITRE ATT&CK Enterprise v15

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          InstallRegerLib.dll

          • Path C:\Program Files (x86)\RichVideoCodec\InstallRegerLib.dll
          • Size 88KB
          • SHA256 77b016ccf2b2e4df4c67df0e0dfd7011b79c2c1f394b2f2f2a235bc2fce0e30a
          • MD5 SHA1 SHA512 SSDEEP

          escan.exe

          • Path C:\Program Files (x86)\RichVideoCodec\escan.exe
          • Size 107KB
          • SHA256 bb6d67d3e10694e9bd00d6b83ad6db212834a0175fa2474bc41d6ca4a3a52ac0
          • MD5 SHA1 SHA512 SSDEEP

          System.dll

          • Path C:\Users\Admin\AppData\Local\Temp\nsf2EA2.tmp\System.dll
          • Size 10KB
          • SHA256 d3f9c99e0c1c9acd81a1b33bc3dbd305140def90d10485c253cf1d455f0dc903
          • MD5 SHA1 SHA512 SSDEEP

          RichVideoCodec.dll

          • Path C:\Windows\SysWOW64\RichVideoCodec.dll
          • Size 132KB
          • SHA256 1e8ff0f36a61829f4bd458c0835e3d92c2beb32e57ea27ffae43eb5a88b0a629
          • MD5 SHA1 SHA512 SSDEEP

          memory/2368-36-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/2368-37-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/2368-35-0x00000000004C0000-0x00000000004F0000-memory.dmp

          memory/4020-15-0x00000000024A0000-0x00000000024B7000-memory.dmp

          memory/4692-27-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/4692-30-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/4692-28-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/4692-29-0x0000000000590000-0x00000000005C0000-memory.dmp

          memory/4692-25-0x0000000000400000-0x0000000000436000-memory.dmp

          memory/4692-38-0x0000000000400000-0x0000000000436000-memory.dmp