Overview

overview

10

Static

static

10

9e8fbb186d...02.exe

windows10-2004-x64

10

9e8fbb186d...02.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    6s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260629-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260629-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    03/07/2026, 13:58

Sharing

Copy URL Twitter E-mail
Report Analysis Logs

General

  • Target
    9e8fbb186dfc4432c9e85adb3d3a5a9d88cf112d0b8f3743a4ff6cc471c40802.exe
  • Size 45KB
  • Sample260703-raba1sav3w
  • SHA256 9e8fbb186dfc4432c9e85adb3d3a5a9d88cf112d0b8f3743a4ff6cc471c40802
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • cuongsex.com:80

  • cuongsex.com:22

  • cuongsex.com:8080

  • cuongsex.com:8880

  • cuongsex.com:2052

  • cuongsex.com:2082

  • cuongsex.com:2086

  • cuongsex.com:2095

  • cuongsex.com:443

  • cuongsex.com:2053

  • cuongsex.com:2083

  • cuongsex.com:2087

  • cuongsex.com:2096

  • cuongsex.com:8443

  • www.cuongsex.com:80

  • www.cuongsex.com:22

  • www.cuongsex.com:8080

  • www.cuongsex.com:8880

  • www.cuongsex.com:2052

  • www.cuongsex.com:2082

Mutex

  • 2H91O4B4mCv9

Attributes
  • delay

    0

  • install

    true

  • install_file

    k5zb.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
  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • 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 29 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9e8fbb186dfc4432c9e85adb3d3a5a9d88cf112d0b8f3743a4ff6cc471c40802.exe
    "C:\Users\Admin\AppData\Local\Temp\9e8fbb186dfc4432c9e85adb3d3a5a9d88cf112d0b8f3743a4ff6cc471c40802.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5852
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "k5zb" /tr '"C:\Users\Admin\AppData\Roaming\k5zb.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5376
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "k5zb" /tr '"C:\Users\Admin\AppData\Roaming\k5zb.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2364
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC61A.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1180
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4552
      • C:\Users\Admin\AppData\Roaming\k5zb.exe
        "C:\Users\Admin\AppData\Roaming\k5zb.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:2144
  • C:\Users\Admin\AppData\Roaming\k5zb.exe
    "C:\Users\Admin\AppData\Roaming\k5zb.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2404
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:4076
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
          PID:1072
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
        1⤵
          PID:816
        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
          1⤵
            PID:964

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

                Loading Replay Monitor...

                Downloads

                prep_Activatable Class_Hermes_perf.cache
                • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
                • Size 599B
                • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                tmpC61A.tmp.bat
                • Path C:\Users\Admin\AppData\Local\Temp\tmpC61A.tmp.bat
                • Size 148B
                • SHA256 4344642093e64fc9420d9c2400f9d61cac1c068fd0f72605bd28ca5cb17b7f26
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                k5zb.exe
                • Path C:\Users\Admin\AppData\Roaming\k5zb.exe
                • Size 45KB
                • SHA256 9e8fbb186dfc4432c9e85adb3d3a5a9d88cf112d0b8f3743a4ff6cc471c40802
                • MD5 SHA1 SHA512 SSDEEP TLSH
                Submit Download

                memory/816-16-0x0000026B001E0000-0x0000026B002E0000-memory.dmp
                Download

                memory/816-46-0x0000026B01B90000-0x0000026B01BB0000-memory.dmp
                Download

                memory/816-81-0x0000026B14270000-0x0000026B14290000-memory.dmp
                Download

                memory/816-48-0x0000026B01EB0000-0x0000026B01FB0000-memory.dmp
                Download

                memory/816-63-0x0000026B01E10000-0x0000026B01E30000-memory.dmp
                Download

                memory/964-206-0x0000025E80850000-0x0000025E80924000-memory.dmp
                Download

                memory/2404-14-0x0000000075000000-0x00000000757BC000-memory.dmp
                Download

                memory/2404-12-0x0000000075000000-0x00000000757BC000-memory.dmp
                Download

                memory/5852-0-0x0000000075182000-0x0000000075183000-memory.dmp
                Download

                memory/5852-8-0x0000000075170000-0x000000007592C000-memory.dmp
                Download

                memory/5852-3-0x0000000005710000-0x00000000057AC000-memory.dmp
                Download

                memory/5852-2-0x0000000075170000-0x000000007592C000-memory.dmp
                Download

                memory/5852-1-0x0000000000C00000-0x0000000000C12000-memory.dmp
                Download