Analysis

  • max time kernel
    154s
  • max time network
    179s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    20-04-2022 04:17

General

  • Target

    926a1d29e97f80aa65deb0186c1174d85db2236997e4eba91aac0592ff2c077c.exe

  • Size

    1.0MB

  • MD5

    accf119512ef395778488003900d8226

  • SHA1

    ba0eff961e9e43ac35a837dd43fcbab2a554d04b

  • SHA256

    926a1d29e97f80aa65deb0186c1174d85db2236997e4eba91aac0592ff2c077c

  • SHA512

    f9fca6f256884a2544fe1f580c6656296c424bf6947acf8c91235d33571e749f8857683917d2196728b9a5bff7817c39926368c26bdc2aaa40cdaab167bb7005

Malware Config

Extracted

Family

modiloader

C2

https://cdn.discordapp.com/attachments/734633826718056471/771632517647695902/Rebxeee

Signatures

  • ModiLoader, DBatLoader

    ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

  • ModiLoader First Stage 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Modifies registry key 1 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\926a1d29e97f80aa65deb0186c1174d85db2236997e4eba91aac0592ff2c077c.exe
    "C:\Users\Admin\AppData\Local\Temp\926a1d29e97f80aa65deb0186c1174d85db2236997e4eba91aac0592ff2c077c.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:2868
    • C:\Windows\SysWOW64\Notepad.exe
      "C:\Windows\System32\Notepad.exe"
      2⤵
        PID:4464
        • C:\Windows\SysWOW64\cmd.exe
          C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
          3⤵
            PID:1996
            • C:\Windows\SysWOW64\reg.exe
              reg delete hkcu\Environment /v windir /f
              4⤵
              • Modifies registry key
              PID:4428
            • C:\Windows\SysWOW64\reg.exe
              reg add hkcu\Environment /v windir /d "cmd /c start /min C:\Users\Public\x.bat reg delete hkcu\Environment /v windir /f && REM "
              4⤵
              • Modifies registry key
              PID:3320
            • C:\Windows\SysWOW64\schtasks.exe
              schtasks /Run /TN \Microsoft\Windows\DiskCleanup\SilentCleanup /I
              4⤵
                PID:3896
              • C:\Windows\SysWOW64\reg.exe
                reg delete hkcu\Environment /v windir /f
                4⤵
                • Modifies registry key
                PID:3508
            • C:\Windows\SysWOW64\cmd.exe
              C:\Windows\system32\cmd.exe /c C:\Users\Public\Natso.bat
              3⤵
                PID:1356
            • C:\Program Files (x86)\internet explorer\ieinstal.exe
              "C:\Program Files (x86)\internet explorer\ieinstal.exe"
              2⤵
                PID:3840

            Network

            MITRE ATT&CK Matrix ATT&CK v6

            Persistence

            Registry Run Keys / Startup Folder

            1
            T1060

            Defense Evasion

            Modify Registry

            2
            T1112

            Command and Control

            Web Service

            1
            T1102

            Replay Monitor

            Loading Replay Monitor...

            Downloads

            • C:\Users\Public\Natso.bat
              Filesize

              283B

              MD5

              5cc1682955fd9f5800a8f1530c9a4334

              SHA1

              e09b6a4d729f2f4760ee42520ec30c3192c85548

              SHA256

              5562cc607d2f698327efacc4a21bd079bb14a99b03e7a01b3c67f8440e341cb3

              SHA512

              80767263aad44c739236161d4338d5dd8b0b58613f22cd173c3e88ebf143220ee56bbf93ace69a07d3c2f00daff0adbaa8461a1d53d12699725395c931c43cb6

            • memory/1356-154-0x0000000000000000-mapping.dmp
            • memory/1996-146-0x0000000000000000-mapping.dmp
            • memory/2868-132-0x0000000004680000-0x0000000004690000-memory.dmp
              Filesize

              64KB

            • memory/2868-139-0x0000000004B40000-0x0000000004B50000-memory.dmp
              Filesize

              64KB

            • memory/3320-149-0x0000000000000000-mapping.dmp
            • memory/3508-151-0x0000000000000000-mapping.dmp
            • memory/3840-153-0x0000000000000000-mapping.dmp
            • memory/3896-150-0x0000000000000000-mapping.dmp
            • memory/4428-148-0x0000000000000000-mapping.dmp
            • memory/4464-145-0x0000000000000000-mapping.dmp
            • memory/4464-152-0x0000000050480000-0x000000005049A000-memory.dmp
              Filesize

              104KB