Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260710-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260710-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    04/08/2026, 11:19

General

  • Target
    ffce52ee600ae1910d6e5697627f9d4920c1da1ca70381a676652e145e36466c.exe
  • Size 45KB
  • Sample260804-nezbvsvsg1
  • SHA256 ffce52ee600ae1910d6e5697627f9d4920c1da1ca70381a676652e145e36466c
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • asyncrat

Version
  • 0.5.8

Botnet
  • Default

C2
  • twosisterstubes.com:80

  • twosisterstubes.com:22

  • twosisterstubes.com:8080

  • twosisterstubes.com:8880

  • twosisterstubes.com:2052

  • twosisterstubes.com:2082

  • twosisterstubes.com:2086

  • twosisterstubes.com:2095

  • twosisterstubes.com:443

  • twosisterstubes.com:2053

  • twosisterstubes.com:2083

  • twosisterstubes.com:2087

  • twosisterstubes.com:2096

  • twosisterstubes.com:8443

  • www.twosisterstubes.com:80

  • www.twosisterstubes.com:22

  • www.twosisterstubes.com:8080

  • www.twosisterstubes.com:8880

  • www.twosisterstubes.com:2052

  • www.twosisterstubes.com:2082

Mutex
  • tknLDujSo0WM

Attributes
  • delay

    0

  • install

    true

  • install_file

    6zs3qxb.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
  • Executes dropped EXE 2 IoCs
  • Outbound SSH connection to public host 2 TTPs 2 IoCs

    SSH is used for remote access. This may indicate SSH host discovery, encrypted C2 traffic, or data exfiltration.

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

Processes

  • C:\Users\Admin\AppData\Local\Temp\ffce52ee600ae1910d6e5697627f9d4920c1da1ca70381a676652e145e36466c.exe
    "C:\Users\Admin\AppData\Local\Temp\ffce52ee600ae1910d6e5697627f9d4920c1da1ca70381a676652e145e36466c.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5364
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "6zs3qxb" /tr '"C:\Users\Admin\AppData\Roaming\6zs3qxb.exe"' & exit
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4832
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /rl highest /tn "6zs3qxb" /tr '"C:\Users\Admin\AppData\Roaming\6zs3qxb.exe"'
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2480
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp69FB.tmp.bat""
      2⤵
      • Executes a command shell one-liner
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5820
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3700
      • C:\Users\Admin\AppData\Roaming\6zs3qxb.exe
        "C:\Users\Admin\AppData\Roaming\6zs3qxb.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        PID:5456
  • C:\Users\Admin\AppData\Roaming\6zs3qxb.exe
    "C:\Users\Admin\AppData\Roaming\6zs3qxb.exe"
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:636

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        tmp69FB.tmp.bat

        • Path C:\Users\Admin\AppData\Local\Temp\tmp69FB.tmp.bat
        • Size 151B
        • SHA256 3a225b8ff142a0fcf3cd63d40e3c3944c465e6a53407e385f0d36c4c272a9bc1
        • MD5 SHA1 SHA512 TLSH

        6zs3qxb.exe

        • Path C:\Users\Admin\AppData\Roaming\6zs3qxb.exe
        • Size 45KB
        • SHA256 ffce52ee600ae1910d6e5697627f9d4920c1da1ca70381a676652e145e36466c
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/636-12-0x0000000074820000-0x0000000074FDC000-memory.dmp

        memory/636-14-0x0000000074820000-0x0000000074FDC000-memory.dmp

        memory/5364-0-0x0000000074A02000-0x0000000074A03000-memory.dmp

        memory/5364-1-0x0000000000C00000-0x0000000000C12000-memory.dmp

        memory/5364-2-0x00000000749F0000-0x00000000751AC000-memory.dmp

        memory/5364-3-0x0000000005680000-0x000000000571C000-memory.dmp

        memory/5364-8-0x00000000749F0000-0x00000000751AC000-memory.dmp