Analysis

  • max time kernel
    145s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    17/08/2024, 09:15

General

  • Target

    a1fba4fc7c545df03dd41273464f5a2e_JaffaCakes118.exe

  • Size

    345KB

  • MD5

    a1fba4fc7c545df03dd41273464f5a2e

  • SHA1

    2db1c86675229b25fd35bc1e641d74042e370456

  • SHA256

    4f5de3312e1ba01d315405cbdb6d708d1d45deb7da4718accc6c92d89cc43bdb

  • SHA512

    f6b2506bf491ec587b1534aee2b69658613c5b810b4cc6a04c0eb5aa2dbf5b5574d4ebb4b104393fd80ef8b578b6c0a740cd5872132f37d9e2343191e3e23267

  • SSDEEP

    6144:qejcG1q9Y8PbwsZOenCoTh93NphmLAvWkddgcU1y4UwE:qIcG1qjbFOy93fhUeTVU1y4M

Score
7/10

Malware Config

Signatures

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Program crash 2 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Kills process with taskkill 1 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\a1fba4fc7c545df03dd41273464f5a2e_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\a1fba4fc7c545df03dd41273464f5a2e_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:1648
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 556
      2⤵
      • Program crash
      PID:2056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 1648 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\a1fba4fc7c545df03dd41273464f5a2e_JaffaCakes118.exe" & start C:\Users\Admin\AppData\Local\hylldknr.exe -f
      2⤵
      • System Location Discovery: System Language Discovery
      • System Network Configuration Discovery: Internet Connection Discovery
      • Suspicious use of WriteProcessMemory
      PID:772
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /f /pid 1648
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:3700
      • C:\Windows\SysWOW64\PING.EXE
        ping -n 3 127.1
        3⤵
        • System Location Discovery: System Language Discovery
        • System Network Configuration Discovery: Internet Connection Discovery
        • Runs ping.exe
        PID:2992
      • C:\Users\Admin\AppData\Local\hylldknr.exe
        C:\Users\Admin\AppData\Local\hylldknr.exe -f
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        PID:2392
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 568
          4⤵
          • Program crash
          PID:4832
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1648 -ip 1648
    1⤵
      PID:4404
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 2392 -ip 2392
      1⤵
        PID:5048

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

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      Downloads

      • C:\Users\Admin\AppData\Local\hylldknr.exe

        Filesize

        345KB

        MD5

        a1fba4fc7c545df03dd41273464f5a2e

        SHA1

        2db1c86675229b25fd35bc1e641d74042e370456

        SHA256

        4f5de3312e1ba01d315405cbdb6d708d1d45deb7da4718accc6c92d89cc43bdb

        SHA512

        f6b2506bf491ec587b1534aee2b69658613c5b810b4cc6a04c0eb5aa2dbf5b5574d4ebb4b104393fd80ef8b578b6c0a740cd5872132f37d9e2343191e3e23267

      • memory/1648-0-0x0000000000E50000-0x0000000000E53000-memory.dmp

        Filesize

        12KB

      • memory/1648-1-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB

      • memory/1648-2-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB

      • memory/1648-5-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB

      • memory/2392-9-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB

      • memory/2392-10-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB

      • memory/2392-12-0x0000000001000000-0x00000000010B7000-memory.dmp

        Filesize

        732KB