General

  • Target

    Bltools 2.9.1[PRO].rar

  • Size

    166.6MB

  • Sample

    250414-vzm8nawjz9

  • MD5

    63110664c54cb018c6e7e65b6492cdc0

  • SHA1

    71d046c87c0c78c112fbe0a87ca972cc2df547fc

  • SHA256

    9d1a86953bce9b2d3438481502e4d8734ddd4108b7c1143084cbe1f545629cd3

  • SHA512

    728fc61d022c11e8df39693cc0442a0f4726e60a04dacf4e373dbbb8ebcdac62e00c43f862fc3988f2d3c37e01b63297b1514d35fe5aa771585e05217cab6e46

  • SSDEEP

    3145728:B0UGpnruw0k89R1fEa51iPGTF3YWB2JkwawgN+gAzOarziyShrDBDFF8iVOqVB:WUYLA9XfEa6+hkJLZ5zWhtF5nB

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3837

djs-ernst.with.playit.plus:3837

Attributes
  • delay

    1

  • install

    true

  • install_file

    system32.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      Bltools 2.9.1[PRO]/Bltools 2.9.1[PRO].exe

    • Size

      14.4MB

    • MD5

      d0c9183291262d8a440ea6064a77ad11

    • SHA1

      61c35f616771a1fb9c9fe46950e08a480d316c71

    • SHA256

      5fc7a38a82948f25183578c2ae2cc576fc46f7bac2a9f33da41b6d086990b06f

    • SHA512

      0ed51a135f9053ad6e65f139b4795ca8c65973814adb72c3c1dba6e71bd251391f8628f40a41ef0d486d56a18ef1bcad26d88a7995c50ec7f294481d2110cd7e

    • SSDEEP

      196608:HTGGAN9OxruVu6fIMPFLdjNdw532Krxo8sd7PpMXmpJLwn1R3P97LBxJjxcKOv7/:QNkruVzQYZj+o8sdzpImpJLq1RtLB7ZU

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

    • Asyncrat family

    • Detects Monster Stealer.

    • Exela Stealer

      Exela Stealer is an open source stealer originally written in .NET and later transitioned to Python that was first observed in August 2023.

    • Exelastealer family

    • Monster

      Monster is a Golang stealer that was discovered in 2024.

    • Monster family

    • Async RAT payload

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Clipboard Data

      Adversaries may collect data stored in the clipboard from users copying information within or between applications.

    • Deletes itself

    • 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.

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Network Service Discovery

      Attempt to gather information on host's network.

    • Enumerates processes with tasklist

    • Hide Artifacts: Hidden Files and Directories

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v16

Tasks