Overview

overview

10

Static

static

10

dd8247fb92...04.exe

windows10-2004-x64

10

dd8247fb92...04.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    07/07/2026, 11:37

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General

  • Target
    dd8247fb9247d297a25d5c77c3939d238a5902241b3903cf8291441dc9b1eb04.exe
  • Size 45KB
  • Sample260707-nq7sdagy6x
  • SHA256 dd8247fb9247d297a25d5c77c3939d238a5902241b3903cf8291441dc9b1eb04
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • x.vnphimsexhay.blog:80

  • x.vnphimsexhay.blog:22

  • x.vnphimsexhay.blog:8080

  • x.vnphimsexhay.blog:8880

  • x.vnphimsexhay.blog:2052

  • x.vnphimsexhay.blog:2082

  • x.vnphimsexhay.blog:2086

  • x.vnphimsexhay.blog:2095

  • x.vnphimsexhay.blog:443

  • x.vnphimsexhay.blog:2053

  • x.vnphimsexhay.blog:2083

  • x.vnphimsexhay.blog:2087

  • x.vnphimsexhay.blog:2096

  • x.vnphimsexhay.blog:8443

  • www.x.vnphimsexhay.blog:80

  • www.x.vnphimsexhay.blog:22

  • www.x.vnphimsexhay.blog:8080

  • www.x.vnphimsexhay.blog:8880

  • www.x.vnphimsexhay.blog:2052

  • www.x.vnphimsexhay.blog:2082

Mutex

  • S0cxwSX9zdpv

Attributes
  • delay

    0

  • install

    true

  • install_file

    yn54z.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).

  • 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 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\dd8247fb9247d297a25d5c77c3939d238a5902241b3903cf8291441dc9b1eb04.exe
    "C:\Users\Admin\AppData\Local\Temp\dd8247fb9247d297a25d5c77c3939d238a5902241b3903cf8291441dc9b1eb04.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2284
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "yn54z" /tr '"C:\Users\Admin\AppData\Roaming\yn54z.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4748
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "yn54z" /tr '"C:\Users\Admin\AppData\Roaming\yn54z.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4636
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp629D.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3284
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:1768
      • C:\Users\Admin\AppData\Roaming\yn54z.exe
        "C:\Users\Admin\AppData\Roaming\yn54z.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:4640
  • C:\Users\Admin\AppData\Roaming\yn54z.exe
    "C:\Users\Admin\AppData\Roaming\yn54z.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2572

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp629D.tmp.bat
        • Path C:\Users\Admin\AppData\Local\Temp\tmp629D.tmp.bat
        • Size 149B
        • SHA256 5db51c65d4dcae7e6c99559367a4b093e677c986b21bb01b5551e27450390de1
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        yn54z.exe
        • Path C:\Users\Admin\AppData\Roaming\yn54z.exe
        • Size 45KB
        • SHA256 dd8247fb9247d297a25d5c77c3939d238a5902241b3903cf8291441dc9b1eb04
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        memory/2284-0-0x0000000000360000-0x0000000000372000-memory.dmp
        Download

        memory/2284-1-0x0000000004CA0000-0x0000000004CB0000-memory.dmp
        Download

        memory/2284-2-0x0000000004D50000-0x0000000004DEC000-memory.dmp
        Download

        memory/2572-10-0x00000000049A0000-0x00000000049B0000-memory.dmp
        Download

        memory/2572-13-0x00000000049A0000-0x00000000049B0000-memory.dmp
        Download