Analysis

  • max time kernel
    147s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:13

General

  • Target

    2884a1b8944cf25dad7dda0005b1995e.exe

  • Size

    714KB

  • MD5

    2884a1b8944cf25dad7dda0005b1995e

  • SHA1

    b0df655586ec0e4ef320c609053b1361c12a3084

  • SHA256

    c4a2c8397cfa4f7f16a317aad541b6c48e35c4420249f702b2c6f01faf66ef61

  • SHA512

    f86f5b06c467f99ca231b45bc6d444bea03107c6c3cc133dacc3033a435e92de4b9f1a170bcae55cf493e18ff80e3f1b27c58614ef1831709a087fab9d1ef789

Malware Config

Signatures

  • CoreEntity .NET Packer 1 IoCs

    A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

  • RedLine

    RedLine Stealer is a malware family written in C#, first appearing in early 2020.

  • RedLine Payload 4 IoCs
  • rezer0 1 IoCs

    Detects ReZer0, a packer with multiple versions used in various campaigns.

  • Suspicious use of SetThreadContext 1 IoCs
  • Kills process with taskkill 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2884a1b8944cf25dad7dda0005b1995e.exe
    "C:\Users\Admin\AppData\Local\Temp\2884a1b8944cf25dad7dda0005b1995e.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1360
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1916
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C taskkill /F /PID 1916 && choice /C Y /N /D Y /T 3 & Del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2032
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1916
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:688
        • C:\Windows\SysWOW64\choice.exe
          choice /C Y /N /D Y /T 3
          4⤵
            PID:1948

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/688-13-0x0000000000000000-mapping.dmp

    • memory/1360-0-0x0000000074520000-0x0000000074C0E000-memory.dmp

      Filesize

      6.9MB

    • memory/1360-1-0x0000000000260000-0x0000000000261000-memory.dmp

      Filesize

      4KB

    • memory/1360-3-0x0000000001DC0000-0x0000000001DC2000-memory.dmp

      Filesize

      8KB

    • memory/1360-4-0x0000000004C90000-0x0000000004CC1000-memory.dmp

      Filesize

      196KB

    • memory/1916-5-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1916-6-0x000000000042A3AE-mapping.dmp

    • memory/1916-7-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1916-8-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1916-9-0x0000000074520000-0x0000000074C0E000-memory.dmp

      Filesize

      6.9MB

    • memory/1948-14-0x0000000000000000-mapping.dmp

    • memory/2032-12-0x0000000000000000-mapping.dmp