Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    18/07/2024, 04:15

General

  • Target
    561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
  • Size 404KB
  • Sample240718-evcy5avcpl
  • SHA256 a22f28ef4f876cd230e6f5137c3baf87ad63b6bbfa2909c762a358bc75699f5a
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • oski

C2
  • maurizio.ug

Signatures

  • Oski

    Oski is an infostealer targeting browser data, crypto wallets.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\561b47e434227876ba3657cb681bb31b_JaffaCakes118.exe"
      2⤵
        PID:3800
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 3800 -s 1300
          3⤵
          • Program crash
          PID:1816
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3800 -ip 3800
      1⤵
        PID:2164

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

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            Downloads

            memory/1084-2-0x00000000777D2000-0x00000000777D3000-memory.dmp

            memory/1084-3-0x0000000000A70000-0x0000000000A71000-memory.dmp

            memory/1084-4-0x0000000002330000-0x0000000002336000-memory.dmp

            memory/3800-5-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/3800-6-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/3800-7-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/3800-9-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/3800-10-0x0000000000400000-0x0000000000434000-memory.dmp

            memory/3800-13-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/3800-15-0x0000000000400000-0x0000000000434000-memory.dmp