Analysis

  • max time kernel
    58s
  • max time network
    61s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    10/07/2026, 20:18

General

  • Target
    b4fbc98971903a8a975934e2ce03ec8cac131b75904f97c9b7538dca073ef708.exe
  • Size 45KB
  • Sample260710-y3a92sa131
  • SHA256 b4fbc98971903a8a975934e2ce03ec8cac131b75904f97c9b7538dca073ef708
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • phimsexz.org:80

  • phimsexz.org:22

  • phimsexz.org:8080

  • phimsexz.org:8880

  • phimsexz.org:2052

  • phimsexz.org:2082

  • phimsexz.org:2086

  • phimsexz.org:2095

  • phimsexz.org:443

  • phimsexz.org:2053

  • phimsexz.org:2083

  • phimsexz.org:2087

  • phimsexz.org:2096

  • phimsexz.org:8443

  • www.phimsexz.org:80

  • www.phimsexz.org:22

  • www.phimsexz.org:8080

  • www.phimsexz.org:8880

  • www.phimsexz.org:2052

  • www.phimsexz.org:2082

Mutex
  • z4RCUNrtARms

Attributes
  • delay

    0

  • install

    true

  • install_file

    6mhnb.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • Family: AsyncRat

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

  • Async RAT payload 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

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

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\b4fbc98971903a8a975934e2ce03ec8cac131b75904f97c9b7538dca073ef708.exe
    "C:\Users\Admin\AppData\Local\Temp\b4fbc98971903a8a975934e2ce03ec8cac131b75904f97c9b7538dca073ef708.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    PID:404
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "6mhnb" /tr '"C:\Users\Admin\AppData\Roaming\6mhnb.exe"' & exit
      2⤵
        PID:1424
        • C:\Windows\SysWOW64\schtasks.exe
          schtasks /create /f /sc onlogon /rl highest /tn "6mhnb" /tr '"C:\Users\Admin\AppData\Roaming\6mhnb.exe"'
          3⤵
          • Scheduled Task/Job: Scheduled Task
          PID:1308
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8E0.tmp.bat""
        2⤵
          PID:4116
          • C:\Windows\SysWOW64\timeout.exe
            timeout 3
            3⤵
            • Delays execution with timeout.exe
            PID:4848
          • C:\Users\Admin\AppData\Roaming\6mhnb.exe
            "C:\Users\Admin\AppData\Roaming\6mhnb.exe"
            3⤵
              PID:476
        • C:\Users\Admin\AppData\Roaming\6mhnb.exe
          "C:\Users\Admin\AppData\Roaming\6mhnb.exe"
          1⤵
            PID:1104

          Network

                MITRE ATT&CK Enterprise v16

                Replay Monitor

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                Downloads

                tmp8E0.tmp.bat

                • Path C:\Users\Admin\AppData\Local\Temp\tmp8E0.tmp.bat
                • Size 148B
                • SHA256 fbd36b8337dba91ab6e74de7280d72f31dea562adbb1d3c1952ba640a4ab70a7
                • MD5 SHA1 SHA512 TLSH

                6mhnb.exe

                • Path C:\Users\Admin\AppData\Roaming\6mhnb.exe
                • Size 45KB
                • SHA256 b4fbc98971903a8a975934e2ce03ec8cac131b75904f97c9b7538dca073ef708
                • MD5 SHA1 SHA512 SSDEEP TLSH

                memory/404-0-0x00000000750A2000-0x00000000750A3000-memory.dmp

                memory/404-1-0x0000000000FD0000-0x0000000000FE2000-memory.dmp

                memory/404-2-0x0000000075090000-0x000000007584C000-memory.dmp

                memory/404-3-0x0000000005AC0000-0x0000000005B5C000-memory.dmp

                memory/404-8-0x0000000075090000-0x000000007584C000-memory.dmp

                memory/1104-12-0x0000000074F20000-0x00000000756DC000-memory.dmp

                memory/1104-14-0x0000000074F20000-0x00000000756DC000-memory.dmp