Overview

overview

10

Static

static

10

20553a4357...30.exe

windows10-2004-x64

10

20553a4357...30.exe

windows11-ltsc_2024-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    148s
  • 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, 10:11

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General

  • Target
    20553a4357834aead6f0cf58150e96c0f9752d35b26866bfcf3d9c4be3797e30.exe
  • Size 45KB
  • Sample260703-l71z2sfs2w
  • SHA256 20553a4357834aead6f0cf58150e96c0f9752d35b26866bfcf3d9c4be3797e30
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
defaultdefense_evasiondiscoveryexecutionasyncratpersistencerat

Malware Config

Extracted

Family

  • asyncrat

Version

  • 0.5.8

Botnet

  • Default

C2

  • phimsexvn.work:80

  • phimsexvn.work:22

  • phimsexvn.work:8080

  • phimsexvn.work:8880

  • phimsexvn.work:2052

  • phimsexvn.work:2082

  • phimsexvn.work:2086

  • phimsexvn.work:2095

  • phimsexvn.work:443

  • phimsexvn.work:2053

  • phimsexvn.work:2083

  • phimsexvn.work:2087

  • phimsexvn.work:2096

  • phimsexvn.work:8443

  • www.phimsexvn.work:80

  • www.phimsexvn.work:22

  • www.phimsexvn.work:8080

  • www.phimsexvn.work:8880

  • www.phimsexvn.work:2052

  • www.phimsexvn.work:2082

Mutex

  • H8rFyfMcUBBl

Attributes
  • delay

    0

  • install

    true

  • install_file

    era9.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\20553a4357834aead6f0cf58150e96c0f9752d35b26866bfcf3d9c4be3797e30.exe
    "C:\Users\Admin\AppData\Local\Temp\20553a4357834aead6f0cf58150e96c0f9752d35b26866bfcf3d9c4be3797e30.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:456
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "era9" /tr '"C:\Users\Admin\AppData\Roaming\era9.exe"' & exit
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5312
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "era9" /tr '"C:\Users\Admin\AppData\Roaming\era9.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:5172
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpEE72.tmp.bat""
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3376
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:5840
      • C:\Users\Admin\AppData\Roaming\era9.exe
        "C:\Users\Admin\AppData\Roaming\era9.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5292
  • C:\Users\Admin\AppData\Roaming\era9.exe
    "C:\Users\Admin\AppData\Roaming\era9.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:5752
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
      PID:3400
      • C:\Windows\explorer.exe
        explorer.exe /LOADSAVEDWINDOWS
        2⤵
          PID:3540
      • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
        "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
        1⤵
          PID:2620
        • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
          "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
          1⤵
            PID:2928

          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

                tmpEE72.tmp.bat
                • Path C:\Users\Admin\AppData\Local\Temp\tmpEE72.tmp.bat
                • Size 148B
                • SHA256 99195192f751cf1b949421de0923917f4ed0aeb5927ce08ed97af1b3b7ba6e50
                • MD5 SHA1 SHA512 TLSH
                Submit Download

                era9.exe
                • Path C:\Users\Admin\AppData\Roaming\era9.exe
                • Size 45KB
                • SHA256 20553a4357834aead6f0cf58150e96c0f9752d35b26866bfcf3d9c4be3797e30
                • MD5 SHA1 SHA512 SSDEEP TLSH
                Submit Download

                memory/456-1-0x0000000000100000-0x0000000000112000-memory.dmp
                Download

                memory/456-2-0x0000000075080000-0x000000007583C000-memory.dmp
                Download

                memory/456-3-0x0000000004C90000-0x0000000004D2C000-memory.dmp
                Download

                memory/456-8-0x0000000075080000-0x000000007583C000-memory.dmp
                Download

                memory/456-0-0x0000000075092000-0x0000000075093000-memory.dmp
                Download

                memory/2620-81-0x0000020B14120000-0x0000020B14140000-memory.dmp
                Download

                memory/2620-37-0x0000020B001E0000-0x0000020B002E0000-memory.dmp
                Download

                memory/2620-53-0x0000020B02B90000-0x0000020B02BB0000-memory.dmp
                Download

                memory/2620-46-0x0000020B02D50000-0x0000020B02E50000-memory.dmp
                Download

                memory/2620-43-0x0000020B02930000-0x0000020B02950000-memory.dmp
                Download

                memory/2928-197-0x000001BCA0B90000-0x000001BCA0FC4000-memory.dmp
                Download

                memory/5752-14-0x0000000074EB0000-0x000000007566C000-memory.dmp
                Download

                memory/5752-12-0x0000000074EB0000-0x000000007566C000-memory.dmp
                Download