Analysis

  • max time kernel
    62s
  • max time network
    64s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 20:00

General

  • Target
    5a555e71a2b7792b22a5307e7fc8500755d403e4652cf5e2748e836bde59e9e1.exe
  • Size 47KB
  • Sample260722-yre4vsbh34
  • SHA256 5a555e71a2b7792b22a5307e7fc8500755d403e4652cf5e2748e836bde59e9e1
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • www.loto188b.uk.com:6606

  • www.loto188b.uk.com:80

  • www.loto188b.uk.com:8080

  • www.loto188b.uk.com:443

  • www.loto188b.uk.com:8443

  • www.loto188b.uk.com:22

  • www.loto188b.uk.com:23

  • yfe.uk.com:6606

  • yfe.uk.com:80

  • yfe.uk.com:8080

  • yfe.uk.com:443

  • yfe.uk.com:8443

  • yfe.uk.com:22

  • yfe.uk.com:23

Mutex
  • 12Vx1gIsUYMU

Attributes
  • delay

    3

  • install

    true

  • install_file

    GoogleUpdate.exe

  • install_folder

    %Temp%

aes.plain

Signatures

  • Family: AsyncRat

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

  • Async RAT payload 1 IoCs
  • Executes a command shell one-liner 1 TTPs 2 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Delays execution with timeout.exe 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\5a555e71a2b7792b22a5307e7fc8500755d403e4652cf5e2748e836bde59e9e1.exe
    "C:\Users\Admin\AppData\Local\Temp\5a555e71a2b7792b22a5307e7fc8500755d403e4652cf5e2748e836bde59e9e1.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:5696
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      PID:2724
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe"'
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3100
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpFF84.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      PID:4556
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:5924
      • C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe
        "C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe"
        3⤵
          PID:1208
    • C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe
      "C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe"
      1⤵
        PID:1504

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            GoogleUpdate.exe

            • Path C:\Users\Admin\AppData\Local\Temp\GoogleUpdate.exe
            • Size 47KB
            • SHA256 5a555e71a2b7792b22a5307e7fc8500755d403e4652cf5e2748e836bde59e9e1
            • MD5 SHA1 SHA512 SSDEEP TLSH

            tmpFF84.tmp.bat

            • Path C:\Users\Admin\AppData\Local\Temp\tmpFF84.tmp.bat
            • Size 159B
            • SHA256 65cb36ed5d0d419f92f2c9a74f252e33efc4ce448b0cb1e02be4d58dd3cc16fd
            • MD5 SHA1 SHA512 TLSH

            memory/1504-13-0x0000000074740000-0x0000000074EFC000-memory.dmp

            memory/1504-15-0x0000000074740000-0x0000000074EFC000-memory.dmp

            memory/5696-0-0x0000000074752000-0x0000000074753000-memory.dmp

            memory/5696-1-0x00000000009A0000-0x00000000009B2000-memory.dmp

            memory/5696-2-0x0000000074740000-0x0000000074EFC000-memory.dmp

            memory/5696-3-0x0000000005480000-0x00000000054E6000-memory.dmp

            memory/5696-4-0x0000000005900000-0x000000000599C000-memory.dmp

            memory/5696-10-0x0000000074740000-0x0000000074EFC000-memory.dmp