Overview

overview

10

Static

static

3

bc3befb2f1...18.exe

windows7-x64

10

bc3befb2f1...18.exe

windows10-2004-x64

10

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
    23-08-2024 15:05

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General

  • Target

    bc3befb2f1d040d5cdf832bd1fdea92d_JaffaCakes118.exe

  • Size

    80KB

  • MD5

    bc3befb2f1d040d5cdf832bd1fdea92d

  • SHA1

    ba206f845c2386cf931d7b83003847ecdf607fac

  • SHA256

    02f3a65431c6223ceac8ad0a18cce41a976e572b1a1817eb8b39c7fe95a53be4

  • SHA512

    119b12e0a6f792eece79ae2d1347ecf9ab822c99615e7cd47ce5e9fa6e062e192c7c1068860877cf6237ce192b3a538ad4d702087c9a81d60b9c7791801973ac

  • SSDEEP

    768:ev6nMfqH++4qZHcAc8ebdtF5EmpW/p/hxRSH9NxIkL9v/Q6sWD:ev6Mq92ZKmpSFhxRSHdL9bsS

Score
10/10
discoveryevasionpersistence

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • 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
    persistence
  • Enumerates physical storage devices 1 TTPs

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

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

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

    discovery
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bc3befb2f1d040d5cdf832bd1fdea92d_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\bc3befb2f1d040d5cdf832bd1fdea92d_JaffaCakes118.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1424
    • C:\Users\Admin\cuiwii.exe
      "C:\Users\Admin\cuiwii.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:2580
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1424 -s 1476
      2⤵
      • Program crash
      PID:2676
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 1424 -ip 1424
    1⤵
      PID:4896

    Network

    MITRE ATT&CK Enterprise v15

    Replay Monitor

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    Downloads

    • C:\Users\Admin\cuiwii.exe
      Filesize

      80KB

      MD5

      b24aba8834b858cd0b5cb02c409e7c61

      SHA1

      6574723dad6fe5e380ef4248ca459c988b7101f9

      SHA256

      06168a135156e0551e2b16f108f494f1913f4b9a790487adc0888842937d1b33

      SHA512

      53ada6295113a9efd5f9f368d18b3e313edd10776740fa76ace8b86133dcefcaaa4904b28f3f5dc28d22a73d6717d58f5e80fd261641a7f3eb7963bdfe796a6a

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