Analysis

  • max time kernel
    44s
  • max time network
    46s
  • platform
    windows7_x64
  • resource
    win7v20210410
  • submitted
    18-05-2021 10:02

General

  • Target

    49025966d2dd612fc1e423b01620debfd4c97701aefe2.exe

  • Size

    1.0MB

  • MD5

    d6109df4ffa4303e3c30ba997735b689

  • SHA1

    65ac8413b14d7ccb6c848e849caa0de7900116ee

  • SHA256

    49025966d2dd612fc1e423b01620debfd4c97701aefe26a836cea9e2f2d6ab47

  • SHA512

    5e735b12e77ab991c9d54b701645268579f154573aa8a04d8bf2cdb5ed59d3a8ede9f5e55cbce848cd5323fa1e6b3950d12ec5bb7a0bebb403d3711979e1cc8b

Malware Config

Extracted

Family

redline

Botnet

1111

C2

65.21.144.202:62942

Signatures

  • RedLine

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

  • RedLine Payload 2 IoCs
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\49025966d2dd612fc1e423b01620debfd4c97701aefe2.exe
    "C:\Users\Admin\AppData\Local\Temp\49025966d2dd612fc1e423b01620debfd4c97701aefe2.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1084
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\system32\cmd.exe" /c C:\Windows\system32\cmd < Convertira.xls
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1844
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd
        3⤵
        • Loads dropped DLL
        • Suspicious use of WriteProcessMemory
        PID:1796
        • C:\Windows\SysWOW64\findstr.exe
          findstr /V /R "^UNkJJcORLwTPMDHRmEAwfHRFAGvpIPVddQfdtvAkCrkhWSsYbERcArMjWGpeZEpVyDnVgdMrrgnjcDIHfb$" Dio.xls
          4⤵
            PID:1816
          • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Immobilita.exe.com
            Immobilita.exe.com b
            4⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of WriteProcessMemory
            PID:1696
            • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Immobilita.exe.com
              C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\Immobilita.exe.com b
              5⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious use of SetThreadContext
              • Suspicious use of WriteProcessMemory
              PID:1400
              • C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\RegAsm.exe
                C:\Users\Admin\AppData\Local\Temp\7ZipSfx.000\RegAsm.exe
                6⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1184
          • C:\Windows\SysWOW64\PING.EXE
            ping 127.0.0.1 -n 30
            4⤵
            • Runs ping.exe
            PID:1536

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

    Loading Replay Monitor...

    Downloads

    • memory/1084-60-0x00000000752F1000-0x00000000752F3000-memory.dmp

      Filesize

      8KB

    • memory/1184-88-0x0000000004680000-0x0000000004681000-memory.dmp

      Filesize

      4KB

    • memory/1184-81-0x00000000001D0000-0x00000000001EC000-memory.dmp

      Filesize

      112KB

    • memory/1184-86-0x00000000001D0000-0x00000000001EC000-memory.dmp

      Filesize

      112KB

    • memory/1400-80-0x0000000000110000-0x0000000000111000-memory.dmp

      Filesize

      4KB