General

  • Target

    https://download1509.mediafire.com/eo6bbcv5iqbga6v16ygsyFoGOm1IH9FDLOI-DwzVRGQAEa1164G9_cw0JP5X7m3Rwcv5sAkPBVL-kDpl49TnM4KqrgLp4d_wxyB8ykSJV6kMiUxqWEkc3c7SW_NCM00uGdTLms19sgnEuUAAP3VLt2-Y603QduVv-_jQ05JzJag/9xogcwbdsuh10xw/MailAcess+Checker+by+xRisky.rar

  • Sample

    240803-lqny6azbqn

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Mutex

AsyncMutex_7SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    ContainerRuntime.exe

  • install_folder

    %AppData%

  • pastebin_config

    https://pastebin.com/raw/Kb8rTgY7

aes.plain

Targets

    • Target

      https://download1509.mediafire.com/eo6bbcv5iqbga6v16ygsyFoGOm1IH9FDLOI-DwzVRGQAEa1164G9_cw0JP5X7m3Rwcv5sAkPBVL-kDpl49TnM4KqrgLp4d_wxyB8ykSJV6kMiUxqWEkc3c7SW_NCM00uGdTLms19sgnEuUAAP3VLt2-Y603QduVv-_jQ05JzJag/9xogcwbdsuh10xw/MailAcess+Checker+by+xRisky.rar

    • AsyncRat

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

    • Async RAT payload

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • 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

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

7
T1082

Browser Information Discovery

1
T1217

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Peripheral Device Discovery

1
T1120

Command and Control

Web Service

1
T1102

Tasks