Overview

overview

10

Static

static

10

blodsa.exe

windows10-2004-x64

10

blodsa.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    30s
  • max time network
    31s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    09/08/2026, 09:25

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    blodsa.exe
  • Size 48KB
  • Sample260809-ldvaeavcra
  • SHA256 d92dbd750d8616cb72801b5ca49d5da4325a8421e4707b831346a98c66a7efb6
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • 789win01.cyou:6606

  • 789win01.cyou:80

  • 789win01.cyou:8080

  • 789win01.cyou:443

  • 789win01.cyou:8443

  • 789win01.cyou:22

  • 789win01.cyou:23

  • nk88.royalgroupofcompanies.in/vn/:6606

  • nk88.royalgroupofcompanies.in/vn/:80

  • nk88.royalgroupofcompanies.in/vn/:8080

  • nk88.royalgroupofcompanies.in/vn/:443

  • nk88.royalgroupofcompanies.in/vn/:8443

  • nk88.royalgroupofcompanies.in/vn/:22

  • nk88.royalgroupofcompanies.in/vn/:23

  • royalgroupofcompanies.in/vn/:6606

  • royalgroupofcompanies.in/vn/:80

  • royalgroupofcompanies.in/vn/:8080

  • royalgroupofcompanies.in/vn/:443

  • royalgroupofcompanies.in/vn/:8443

  • royalgroupofcompanies.in/vn/:22

Mutex

  • QY1NvNVuFCbG

Attributes
  • delay

    3

  • install

    true

  • install_file

    GoogleUpdate.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

    ratasyncrat
  • Async RAT payload 1 IoCs
    rat
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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.

    execution
  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

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

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

    persistenceexecution
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\blodsa.exe
    "C:\Users\Admin\AppData\Local\Temp\blodsa.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2772
    • 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\Roaming\GoogleUpdate.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4564
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "GoogleUpdate" /tr '"C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4600
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1469.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4128
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1056
      • C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
        "C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2324
  • C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
    "C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:1052

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        tmp1469.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp1469.tmp.bat
        • Size 156B
        • SHA256 1fe6a31f8d4f44d7486eec196344d0da08c579fd7884df58400328139ac321cf
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        GoogleUpdate.exe
        • Path C:\Users\Admin\AppData\Roaming\GoogleUpdate.exe
        • Size 48KB
        • SHA256 d92dbd750d8616cb72801b5ca49d5da4325a8421e4707b831346a98c66a7efb6
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2772-0-0x0000000000480000-0x0000000000492000-memory.dmp
        Download

        memory/2772-1-0x0000000002900000-0x0000000002910000-memory.dmp
        Download

        memory/2772-2-0x0000000004EA0000-0x0000000004F06000-memory.dmp
        Download

        memory/2772-3-0x00000000052F0000-0x000000000538C000-memory.dmp
        Download