Analysis

  • max time kernel
    27s
  • max time network
    43s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 15:25

General

  • Target

    malware_smoke_95845919.exe

  • Size

    4.0MB

  • MD5

    f2b90caf89abf936fa91a9b007330174

  • SHA1

    f6d40b9d09088cbc360afc0e0402d6dca5a8dac2

  • SHA256

    c1eae8655ba2f8afc1fdba12f836ad4ba4d26057109b8f70519aba2b88c9b92b

  • SHA512

    87bbf70f746b64191cb5075157a9de13852626d1cf49f85695da2ebc53d7712e4f6039f0aedda0842294bd670e14b43800b97e0c0acb9f3711a055e3feb6f5b0

  • SSDEEP

    98304:r0w4bFKyOF2oGgYUIjn+xU9jzv/4hbznwSIFnRL:rp4RKElgY7n+kzva+R

Malware Config

Signatures

  • YTStealer

    YTStealer is a malware designed to steal YouTube authentication cookies.

  • YTStealer payload 1 IoCs
  • UPX packed file 2 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\malware_smoke_95845919.exe
    "C:\Users\Admin\AppData\Local\Temp\malware_smoke_95845919.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1592
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\Users\Admin\AppData\Local\Temp\malware_smoke_95845919.exe
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:656
      • C:\Windows\system32\choice.exe
        choice /C Y /N /D Y /T 0
        3⤵
          PID:1208

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Credential Access

    Credentials in Files

    1
    T1081

    Collection

    Data from Local System

    1
    T1005

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/656-55-0x0000000000000000-mapping.dmp
    • memory/1208-57-0x0000000000000000-mapping.dmp
    • memory/1592-54-0x0000000000240000-0x0000000001008000-memory.dmp
      Filesize

      13.8MB

    • memory/1592-56-0x0000000000240000-0x0000000001008000-memory.dmp
      Filesize

      13.8MB