Analysis

  • max time kernel
    82s
  • max time network
    79s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:15

General

  • Target

    019af41176f7e25391be0fd72c1f9172.exe

  • Size

    875KB

  • MD5

    019af41176f7e25391be0fd72c1f9172

  • SHA1

    62207e793fa36961a1d2527f7d3f0f4e9b968c98

  • SHA256

    b42ff896888eef8fb77d21409aa4ebcd906ff4446e21c4c7e658f569f92790f6

  • SHA512

    542607967524c853bfb8923992283dd27f0e61872c4119055952f2dbf571abfc17b136f74ab951c3c0a4ed6d92bcfc56f06fd32ff4f3c51c384a9c9349a92897

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 use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 24 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\019af41176f7e25391be0fd72c1f9172.exe
    "C:\Users\Admin\AppData\Local\Temp\019af41176f7e25391be0fd72c1f9172.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1640
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
      "{path}"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:1404
      • C:\Windows\SysWOW64\cmd.exe
        "cmd.exe" /C taskkill /F /PID 1404 && 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:768
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1404
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:564
        • C:\Windows\SysWOW64\choice.exe
          choice /C Y /N /D Y /T 3
          4⤵
            PID:1512

    Network

    MITRE ATT&CK Matrix

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/564-14-0x0000000000000000-mapping.dmp

    • memory/768-13-0x0000000000000000-mapping.dmp

    • memory/1404-10-0x0000000074B50000-0x000000007523E000-memory.dmp

      Filesize

      6.9MB

    • memory/1404-6-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1404-7-0x000000000042A5CE-mapping.dmp

    • memory/1404-8-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1404-9-0x0000000000400000-0x0000000000430000-memory.dmp

      Filesize

      192KB

    • memory/1512-15-0x0000000000000000-mapping.dmp

    • memory/1640-4-0x0000000000300000-0x0000000000302000-memory.dmp

      Filesize

      8KB

    • memory/1640-5-0x0000000000D70000-0x0000000000DA1000-memory.dmp

      Filesize

      196KB

    • memory/1640-0-0x0000000074B50000-0x000000007523E000-memory.dmp

      Filesize

      6.9MB

    • memory/1640-3-0x0000000000D10000-0x0000000000D47000-memory.dmp

      Filesize

      220KB

    • memory/1640-1-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

      Filesize

      4KB