Analysis

  • max time kernel
    146s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31/03/2024, 08:58

General

  • Target
    5249cba6e9ad2cc38bb1dd7fa259e854_JaffaCakes118.exe
  • Size 418KB
  • Sample240331-kxd7vshb4y
  • SHA256 608e74643884b5e54701cf0e7a15dbf18ff2a86676f94b118ff1dafa3b4e03dd
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • oski

C2
  • samkoproducts.xyz

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 use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5249cba6e9ad2cc38bb1dd7fa259e854_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\5249cba6e9ad2cc38bb1dd7fa259e854_JaffaCakes118.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:648
    • C:\Users\Admin\AppData\Local\Temp\5249cba6e9ad2cc38bb1dd7fa259e854_JaffaCakes118.exe
      "C:\Users\Admin\AppData\Local\Temp\5249cba6e9ad2cc38bb1dd7fa259e854_JaffaCakes118.exe"
      2⤵
        PID:2472
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2472 -s 1312
          3⤵
          • Program crash
          PID:2904
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2472 -ip 2472
      1⤵
        PID:4532

      Network

            MITRE ATT&CK Enterprise v15

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            memory/648-8-0x0000000074970000-0x0000000075120000-memory.dmp

            memory/648-9-0x0000000005740000-0x0000000005750000-memory.dmp

            memory/648-2-0x0000000005A80000-0x0000000006024000-memory.dmp

            memory/648-3-0x0000000005570000-0x0000000005602000-memory.dmp

            memory/648-4-0x0000000005740000-0x0000000005750000-memory.dmp

            memory/648-5-0x0000000005720000-0x000000000572A000-memory.dmp

            memory/648-6-0x0000000006D40000-0x0000000006DDC000-memory.dmp

            memory/648-7-0x00000000059D0000-0x00000000059DE000-memory.dmp

            memory/648-1-0x0000000074970000-0x0000000075120000-memory.dmp

            memory/648-10-0x0000000006CA0000-0x0000000006CFC000-memory.dmp

            memory/648-0-0x0000000000B60000-0x0000000000BCE000-memory.dmp

            memory/648-16-0x0000000074970000-0x0000000075120000-memory.dmp

            memory/2472-14-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/2472-13-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/2472-15-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/2472-11-0x0000000000400000-0x0000000000438000-memory.dmp

            memory/2472-19-0x0000000000400000-0x0000000000438000-memory.dmp