General

  • Target

    RobloxPlayerLauncher.exe

  • Size

    1.6MB

  • Sample

    240511-rsnn3aee22

  • MD5

    df3c89248671866cfb9e0a407fad20b4

  • SHA1

    2258e20671e6aaba8ce75abb5bc5bca8c4df0035

  • SHA256

    93580834e65af2f5a83aacef47a1ec3ef45fc6ab9683ec4df771bbea713ab38f

  • SHA512

    f6658f2653aefebc573518773c97319d87d70cabeb182cd622a5722d4df0417df17318f4b25b7929ab03e982a072e914175971b96e205356c5c6a23a3fedaf01

  • SSDEEP

    49152:NmAhTN2Q5MmBRS+qYNS2+3njUrG+TvamoGXtTOgM7PMQpdAUFTHrPHHoV5N:gAhTkyZBdM2+3njUmrPHA

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    Venom

  • antivm

    true

  • c2_url

    https://pastebin.com/raw/9YkEF3aU

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Google.exe

  • main_folder

    Temp

  • pin_spread

    true

  • sub_folder

    \system\

  • usb_spread

    true

Extracted

Family

limerat

Attributes
  • antivm

    false

  • c2_url

    https://pastebin.com/raw/9YkEF3aU

  • download_payload

    false

  • install

    false

  • pin_spread

    false

  • usb_spread

    false

Targets

    • Target

      RobloxPlayerLauncher.exe

    • Size

      1.6MB

    • MD5

      df3c89248671866cfb9e0a407fad20b4

    • SHA1

      2258e20671e6aaba8ce75abb5bc5bca8c4df0035

    • SHA256

      93580834e65af2f5a83aacef47a1ec3ef45fc6ab9683ec4df771bbea713ab38f

    • SHA512

      f6658f2653aefebc573518773c97319d87d70cabeb182cd622a5722d4df0417df17318f4b25b7929ab03e982a072e914175971b96e205356c5c6a23a3fedaf01

    • SSDEEP

      49152:NmAhTN2Q5MmBRS+qYNS2+3njUrG+TvamoGXtTOgM7PMQpdAUFTHrPHHoV5N:gAhTkyZBdM2+3njUmrPHA

    • Cobalt Strike reflective loader

      Detects the reflective loader used by Cobalt Strike.

    • Cobaltstrike

      Detected malicious payload which is part of Cobaltstrike.

    • Detect ZGRat V1

    • LimeRAT

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

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • ZGRat

      ZGRat is remote access trojan written in C#.

    • Contacts a large (762) amount of remote hosts

      This may indicate a network scan to discover remotely running services.

    • Downloads MZ/PE file

    • Drops file in Drivers directory

    • Modifies Installed Components in the registry

    • Modifies Windows Firewall

    • Sets file execution options in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Registers COM server for autorun

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Creates a large amount of network flows

      This may indicate a network scan to discover remotely running services.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Installs/modifies Browser Helper Object

      BHOs are DLL modules which act as plugins for Internet Explorer.

    • Legitimate hosting services abused for malware hosting/C2

    • Maps connected drives based on registry

      Disk information is often read in order to detect sandboxing environments.

    • Modifies powershell logging option

    • AutoIT Executable

      AutoIT scripts compiled to PE executables.

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks