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Analysis

  • max time kernel
    142s
  • max time network
    105s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/08/2024, 15:10

General

  • Target

    bc407613dcd8bc244da23b87b4dca7ca_JaffaCakes118.exe

  • Size

    17KB

  • MD5

    bc407613dcd8bc244da23b87b4dca7ca

  • SHA1

    2d4fbf2adb16dd9ecde292ff317f3a3cb721a230

  • SHA256

    40391a2e93b44bb4cf5ed4e34f27aedbbaa2a641b84f7b2b5cfa56bd49f34af1

  • SHA512

    e22118600602bc64dd078f8df360e3eb283e4ec9459b0116cc8eef212978e680c6638a00471a26a348711d7296948452a19983e83760b0b6789ea264a225f197

  • SSDEEP

    192:c1JdDV4Paqnz9tND2wFFFWOO4Tuu9kqB6EGqgNtGnyWOE+LArUpYCMFaNJhLkwcQ:cGx5V/jX91ny3OtaNJawcudoD7U4xE

Malware Config

Signatures

  • Stops running service(s) 4 TTPs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Indicator Removal: File Deletion 1 TTPs

    Adversaries may delete files left behind by the actions of their intrusion activity.

  • Drops file in Program Files directory 5 IoCs
  • Launches sc.exe 1 IoCs

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 15 IoCs

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

  • Kills process with taskkill 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies Internet Explorer start page 1 TTPs 1 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 42 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc407613dcd8bc244da23b87b4dca7ca_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\bc407613dcd8bc244da23b87b4dca7ca_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5076
    • C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Program Files (x86)\GXW.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Modifies Internet Explorer settings
      • Modifies Internet Explorer start page
      PID:264
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c taskkill /im coiome.exe /f
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4756
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /im coiome.exe /f
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:4612
    • C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe
      "C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:2368
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c sc delete JavaServe
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4404
        • C:\Windows\SysWOW64\sc.exe
          sc delete JavaServe
          4⤵
          • Launches sc.exe
          • System Location Discovery: System Language Discovery
          PID:2540
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c attrib -h -s -r -a "%userprofile%\Cookies\*.*"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:100
        • C:\Windows\SysWOW64\attrib.exe
          attrib -h -s -r -a "C:\Users\Admin\Cookies\*.*"
          4⤵
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:424
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c attrib -h -s -r -a "%userprofile%\Local Settings\Temp\Cookies\*.*"
        3⤵
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1196
        • C:\Windows\SysWOW64\attrib.exe
          attrib -h -s -r -a "C:\Users\Admin\Local Settings\Temp\Cookies\*.*"
          4⤵
          • System Location Discovery: System Language Discovery
          • Views/modifies file attributes
          PID:1436
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c del /f /s /q "%userprofile%\Cookies\*.*
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4384
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c del /f /s /q "%userprofile%\Local Settings\Temporary Internet Files\*.*"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:4176
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c del /f /s /q "%userprofile%\Local Settings\Temp\Cookies\*.*"
        3⤵
        • System Location Discovery: System Language Discovery
        PID:636
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c del "C:\Users\Admin\AppData\Local\Temp\bc407613dcd8bc244da23b87b4dca7ca_JaffaCakes118.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Common Files\sfbsbvx\coiome.exe

    Filesize

    2.0MB

    MD5

    e8b672180418f5fd8edd26fe205bd7d6

    SHA1

    026098dd07ce240a9f6af862b758c3f7b919c688

    SHA256

    28d3fff3647fd5e092b5721f5510baf1d3315fa4e0c19f1d86f52ccc0db788c8

    SHA512

    d75cd50155ccd65d68e4b662e96469cec0aa2d5ede55ddf5212a50c565701943b67c084e1a929f26f5fe7c5203490995db9526e79f3720955f15a0c719fc3bdd

  • C:\Program Files (x86)\GXW.hta

    Filesize

    780B

    MD5

    cfae0efb683986503bb789616bad8b55

    SHA1

    9325f503e9c4d97a7d06d81859f73d245a974753

    SHA256

    8f1076023a3e05a05e9938b08398e885a516f7442a19cd0de7fd3a87f6c0ccd8

    SHA512

    e338c41006f670cc98554f1c3a262cc7e4d9dd680bd9d77cc2b5a048a7f3b630f59df6a02fe6542df71647ce3eb7541f86bc3266fad396a9859620a7d26a942c

  • memory/2368-11-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/2368-13-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/5076-0-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB

  • memory/5076-6-0x0000000000400000-0x000000000040F000-memory.dmp

    Filesize

    60KB