Overview

overview

10

Static

static

10

fdb0b844b2...a7.exe

windows10-2004-x64

10

fdb0b844b2...a7.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    05/09/2026, 08:57

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General

  • Target
    fdb0b844b281d72bf6163f42fb26a31536dea4277bf39b72330a2aa5dcaf66a7.exe
  • Size 45KB
  • Sample260905-kw4fcs1ckd
  • SHA256 fdb0b844b281d72bf6163f42fb26a31536dea4277bf39b72330a2aa5dcaf66a7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • topsexviet.one:80

  • topsexviet.one:22

  • topsexviet.one:8080

  • topsexviet.one:8880

  • topsexviet.one:2052

  • topsexviet.one:2082

  • topsexviet.one:2086

  • topsexviet.one:2095

  • topsexviet.one:443

  • topsexviet.one:2053

  • topsexviet.one:2083

  • topsexviet.one:2087

  • topsexviet.one:2096

  • topsexviet.one:8443

  • www.topsexviet.one:80

  • www.topsexviet.one:22

  • www.topsexviet.one:8080

  • www.topsexviet.one:8880

  • www.topsexviet.one:2052

  • www.topsexviet.one:2082

Mutex

  • E8YGeHoqGq9U

Attributes
  • delay

    0

  • install

    true

  • install_file

    vj9t0.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).

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\fdb0b844b281d72bf6163f42fb26a31536dea4277bf39b72330a2aa5dcaf66a7.exe
    "C:\Users\Admin\AppData\Local\Temp\fdb0b844b281d72bf6163f42fb26a31536dea4277bf39b72330a2aa5dcaf66a7.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3748
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "vj9t0" /tr '"C:\Users\Admin\AppData\Roaming\vj9t0.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3408
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "vj9t0" /tr '"C:\Users\Admin\AppData\Roaming\vj9t0.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:1124
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDAE5.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:2408
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:360
      • C:\Users\Admin\AppData\Roaming\vj9t0.exe
        "C:\Users\Admin\AppData\Roaming\vj9t0.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4496
  • C:\Users\Admin\AppData\Roaming\vj9t0.exe
    "C:\Users\Admin\AppData\Roaming\vj9t0.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2704
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k GPSvcGroup
    1⤵
      PID:3992

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          tmpDAE5.tmp.bat
          • Path C:\Users\Admin\AppData\Local\Temp\tmpDAE5.tmp.bat
          • Size 149B
          • SHA256 abb0b5edba353bcb9c542e6dbcf75f6c226b666966b0612a67ffff3a7037a9be
          • MD5 SHA1 SHA512 TLSH
          Submit Download

          vj9t0.exe
          • Path C:\Users\Admin\AppData\Roaming\vj9t0.exe
          • Size 45KB
          • SHA256 fdb0b844b281d72bf6163f42fb26a31536dea4277bf39b72330a2aa5dcaf66a7
          • MD5 SHA1 SHA512 SSDEEP TLSH
          Submit Download

          memory/2704-12-0x0000000074380000-0x0000000074B3C000-memory.dmp
          Download

          memory/2704-14-0x0000000074380000-0x0000000074B3C000-memory.dmp
          Download

          memory/3748-0-0x0000000074592000-0x0000000074593000-memory.dmp
          Download

          memory/3748-1-0x0000000000210000-0x0000000000222000-memory.dmp
          Download

          memory/3748-2-0x0000000074580000-0x0000000074D3C000-memory.dmp
          Download

          memory/3748-3-0x0000000004C40000-0x0000000004CDC000-memory.dmp
          Download

          memory/3748-8-0x0000000074580000-0x0000000074D3C000-memory.dmp
          Download