Analysis

  • max time kernel
    38s
  • max time network
    45s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    04-10-2022 15:07

General

  • Target

    malware_smoke_1674270581.exe

  • Size

    4.0MB

  • MD5

    063c6d9a6b645ef5d4e756a64e742afc

  • SHA1

    72857a2a3fe6948b5fcb6a8d5555b1fc56b6868d

  • SHA256

    8101c71c2c31df8da09ed7dd55da9bbd949b028f8f54f0e1cbffab82b192ed87

  • SHA512

    54166ad3375dc246519d56f3710f85b792e3bd13daeee619c641f487b0a11691433d0c9900ba82f6c7d29b2c92e73cf82707b3099753dda6583b39db8d7f8c0b

  • SSDEEP

    98304:v/M+dZZSK8hdw8wqxO0dGZeZOLQLtPeEdtcGbr/fBBz:JZSK8hd7NO0cZOqabhr/Lz

Malware Config

Signatures

  • YTStealer

    YTStealer is a malware designed to steal YouTube authentication cookies.

  • YTStealer payload 2 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_1674270581.exe
    "C:\Users\Admin\AppData\Local\Temp\malware_smoke_1674270581.exe"
    1⤵
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:832
    • 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_1674270581.exe
      2⤵
      • Deletes itself
      • Suspicious use of WriteProcessMemory
      PID:1368
      • C:\Windows\system32\choice.exe
        choice /C Y /N /D Y /T 0
        3⤵
          PID:1712

    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/832-54-0x00000000002A0000-0x0000000001069000-memory.dmp
      Filesize

      13.8MB

    • memory/832-57-0x00000000002A0000-0x0000000001069000-memory.dmp
      Filesize

      13.8MB

    • memory/1368-55-0x0000000000000000-mapping.dmp
    • memory/1712-56-0x0000000000000000-mapping.dmp