Analysis

  • max time kernel
    120s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    04/04/2024, 09:19

General

  • Target
    b49a216e03a62392dc1243d0f093c7ff_JaffaCakes118.exe
  • Size 396KB
  • Sample240404-k9953abc3t
  • SHA256 5aae3d166c68743d2868bcd732fa61c2491ddcbe64e6a05f078b48f920cc2be5
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Taurus Stealer

    Taurus is an infostealer first seen in June 2020.

  • Taurus Stealer payload 4 IoCs
  • Deletes itself 1 IoCs
  • Reads WinSCP keys stored on the system 2 TTPs

    Tries to access WinSCP stored sessions.

  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Delays execution with timeout.exe 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b49a216e03a62392dc1243d0f093c7ff_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\b49a216e03a62392dc1243d0f093c7ff_JaffaCakes118.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1956
    • C:\Windows\SysWOW64\cmd.exe
      /c timeout /t 3 & del /f /q C:\Users\Admin\AppData\Local\Temp\b49a216e03a62392dc1243d0f093c7ff_JaffaCakes118.exe
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1528
      • C:\Windows\SysWOW64\timeout.exe
        timeout /t 3
        3⤵
        • Delays execution with timeout.exe
        PID:1464

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        94308059B57B3142E455B38A6EB92015

        • Path C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
        • Size 68KB
        • SHA256 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184
        • MD5 SHA1 SHA512 SSDEEP

        Tar412C.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\Tar412C.tmp
        • Size 177KB
        • SHA256 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34
        • MD5 SHA1 SHA512 SSDEEP

        memory/1956-1-0x0000000003E80000-0x0000000003F80000-memory.dmp

        memory/1956-2-0x00000000002E0000-0x0000000000318000-memory.dmp

        memory/1956-10-0x0000000000400000-0x0000000003DC9000-memory.dmp

        memory/1956-81-0x0000000000400000-0x0000000003DC9000-memory.dmp

        memory/1956-122-0x0000000003E80000-0x0000000003F80000-memory.dmp

        memory/1956-485-0x0000000003E80000-0x0000000003F80000-memory.dmp

        memory/1956-484-0x0000000000400000-0x0000000003DC9000-memory.dmp