Analysis

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

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    02/08/2026, 17:28

General

  • Target
    232d00c50825a528a749d7d9e8b2df1602fa4639035ed119ce97fb5d8ba62924.exe
  • Size 45KB
  • Sample260802-v2dr1axfrd
  • SHA256 232d00c50825a528a749d7d9e8b2df1602fa4639035ed119ce97fb5d8ba62924
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • phimvkl.com:80

  • phimvkl.com:22

  • phimvkl.com:8080

  • phimvkl.com:8880

  • phimvkl.com:2052

  • phimvkl.com:2082

  • phimvkl.com:2086

  • phimvkl.com:2095

  • phimvkl.com:443

  • phimvkl.com:2053

  • phimvkl.com:2083

  • phimvkl.com:2087

  • phimvkl.com:2096

  • phimvkl.com:8443

  • www.phimvkl.com:80

  • www.phimvkl.com:22

  • www.phimvkl.com:8080

  • www.phimvkl.com:8880

  • www.phimvkl.com:2052

  • www.phimvkl.com:2082

Mutex
  • 9Rj7S2E0Xewk

Attributes
  • delay

    0

  • install

    true

  • install_file

    ym25zczg.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 2 IoCs
  • 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).

  • 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.

  • 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.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\232d00c50825a528a749d7d9e8b2df1602fa4639035ed119ce97fb5d8ba62924.exe
    "C:\Users\Admin\AppData\Local\Temp\232d00c50825a528a749d7d9e8b2df1602fa4639035ed119ce97fb5d8ba62924.exe"
    1⤵
    • Checks computer location settings
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5000
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ym25zczg" /tr '"C:\Users\Admin\AppData\Roaming\ym25zczg.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4624
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "ym25zczg" /tr '"C:\Users\Admin\AppData\Roaming\ym25zczg.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4724
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp2045.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3352
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:4752
      • C:\Users\Admin\AppData\Roaming\ym25zczg.exe
        "C:\Users\Admin\AppData\Roaming\ym25zczg.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:1052
  • C:\Users\Admin\AppData\Roaming\ym25zczg.exe
    "C:\Users\Admin\AppData\Roaming\ym25zczg.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:3012

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp2045.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp2045.tmp.bat
        • Size 152B
        • SHA256 60d5695b53419616a979dc82652fd07a350b09db0b7da5cfb254113e036bc985
        • MD5 SHA1 SHA512 TLSH

        ym25zczg.exe

        • Path C:\Users\Admin\AppData\Roaming\ym25zczg.exe
        • Size 45KB
        • SHA256 232d00c50825a528a749d7d9e8b2df1602fa4639035ed119ce97fb5d8ba62924
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/3012-10-0x0000000004A50000-0x0000000004A60000-memory.dmp

        memory/3012-13-0x0000000004A50000-0x0000000004A60000-memory.dmp

        memory/5000-0-0x0000000000DC0000-0x0000000000DD2000-memory.dmp

        memory/5000-1-0x00000000017F0000-0x0000000001800000-memory.dmp

        memory/5000-2-0x0000000005690000-0x000000000572C000-memory.dmp