Analysis

  • max time kernel
    149s
  • max time network
    154s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-03-2023 08:18

General

  • Target

    700043106c930b06fa9ea4a403ca0929bacb82e1c7bd6abaa522b3c207270871.exe

  • Size

    335KB

  • MD5

    9268b0a4743de79dc5a13bbc110d7625

  • SHA1

    3813eae8baea870a0b9865a8bd73100e6ec57b70

  • SHA256

    700043106c930b06fa9ea4a403ca0929bacb82e1c7bd6abaa522b3c207270871

  • SHA512

    00631eb1b86c38850efc334d94bb78d3dd1259284386e9b28c04f2362db9554fece5e55492f01f6aa7fae1aa1c80c2974aba0b5fe93797dccdff2291b8363634

  • SSDEEP

    6144:m+b24Srv5ztq9fq2OlioP8fZCbWpg505a:nbT8tg7OlioPWzpb

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    1234

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/0VLKT4kX

  • delay

    3

  • download_payload

    false

  • install

    false

  • install_name

    Windows Compatibility Assistant.exe

  • main_folder

    AppData

  • pin_spread

    false

  • sub_folder

    \

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Suspicious use of SetThreadContext 1 IoCs
  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 19 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\700043106c930b06fa9ea4a403ca0929bacb82e1c7bd6abaa522b3c207270871.exe
    "C:\Users\Admin\AppData\Local\Temp\700043106c930b06fa9ea4a403ca0929bacb82e1c7bd6abaa522b3c207270871.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1348
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4552
    • C:\Windows\SysWOW64\cmd.exe
      "cmd" /c mkdir "C:\Users\Admin\AppData\Roaming\UAC Control"
      2⤵
        PID:3276
      • C:\Windows\SysWOW64\cmd.exe
        "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\700043106c930b06fa9ea4a403ca0929bacb82e1c7bd6abaa522b3c207270871.exe" "C:\Users\Admin\AppData\Roaming\UAC Control\UAC Control.exe"
        2⤵
          PID:5112
        • C:\Windows\SysWOW64\cmd.exe
          "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\UAC Control\UAC Control.exe'" /f
          2⤵
          • Suspicious use of WriteProcessMemory
          PID:1272
          • C:\Windows\SysWOW64\schtasks.exe
            schtasks /create /sc minute /mo 1 /tn "Nanias" /tr "'C:\Users\Admin\AppData\Roaming\UAC Control\UAC Control.exe'" /f
            3⤵
            • Creates scheduled task(s)
            PID:4588

      Network

      MITRE ATT&CK Enterprise v6

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/1348-133-0x0000000000E00000-0x0000000000E5A000-memory.dmp

        Filesize

        360KB

      • memory/1348-134-0x0000000005590000-0x0000000005B34000-memory.dmp

        Filesize

        5.6MB

      • memory/1348-135-0x0000000004FE0000-0x0000000005072000-memory.dmp

        Filesize

        584KB

      • memory/1348-136-0x0000000004ED0000-0x0000000004F36000-memory.dmp

        Filesize

        408KB

      • memory/1348-137-0x0000000004F60000-0x0000000004F70000-memory.dmp

        Filesize

        64KB

      • memory/1348-138-0x0000000004EA0000-0x0000000004EAA000-memory.dmp

        Filesize

        40KB

      • memory/1348-142-0x0000000004F60000-0x0000000004F70000-memory.dmp

        Filesize

        64KB

      • memory/4552-139-0x0000000000400000-0x000000000040C000-memory.dmp

        Filesize

        48KB

      • memory/4552-140-0x0000000005670000-0x000000000570C000-memory.dmp

        Filesize

        624KB

      • memory/4552-141-0x0000000005890000-0x00000000058A0000-memory.dmp

        Filesize

        64KB

      • memory/4552-143-0x0000000005890000-0x00000000058A0000-memory.dmp

        Filesize

        64KB