Analysis

  • max time kernel
    144s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03/08/2024, 02:24

General

  • Target

    e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe

  • Size

    1007KB

  • MD5

    c1619d951b039ce9cb600815e8b14b26

  • SHA1

    4def66d57b972beb3065a29ed1fe88610943d383

  • SHA256

    e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac

  • SHA512

    c1f071ab1cbe2e12576227a69618f2a717d49c6fa632280b2d769c53c1c8d89bfe51bd524f5aed13fb67d84109e4aa99ec05d96a589284f275135f036bdb2edc

  • SSDEEP

    24576:heAy4u8ZernsYvWwUIGOh5rE1xrJK06WwkS9Ev95FZCyGWsfe:Iyern6VIVqxrJ5KyvVZCyGWsfe

Malware Config

Signatures

  • AsyncRat

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

  • Async RAT payload 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 6 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe
    "C:\Users\Admin\AppData\Local\Temp\e9837fc1d609e0084452590c09746a89af73ec6abf45a26ab58a4d48c9ebceac.exe"
    1⤵
    • Checks computer location settings
    • Adds Run key to start application
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4888
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 5
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:3612
      • C:\Windows\SysWOW64\timeout.exe
        timeout 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:3764
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 5
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:400
      • C:\Windows\SysWOW64\timeout.exe
        timeout 5
        3⤵
        • System Location Discovery: System Language Discovery
        • Delays execution with timeout.exe
        PID:624
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3364

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3364-1054-0x00000000013C0000-0x00000000013DB000-memory.dmp

    Filesize

    108KB

  • memory/3364-1055-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

    Filesize

    4KB

  • memory/3364-1056-0x00000000059D0000-0x00000000059EA000-memory.dmp

    Filesize

    104KB

  • memory/3364-1057-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/3364-1058-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/3364-1061-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/3364-1060-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

    Filesize

    4KB

  • memory/3364-1059-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-37-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-31-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-15-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-5-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-51-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-55-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-69-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-67-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-65-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-63-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-61-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-59-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-57-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-53-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-49-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-47-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-45-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-43-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-41-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-39-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-3-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-35-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-33-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-4-0x0000000005F30000-0x000000000601E000-memory.dmp

    Filesize

    952KB

  • memory/4888-29-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-27-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-25-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-23-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-21-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-19-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-17-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-13-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-11-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-9-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-7-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-6-0x0000000005F30000-0x0000000006017000-memory.dmp

    Filesize

    924KB

  • memory/4888-1042-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-1043-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-1044-0x0000000006170000-0x00000000061DE000-memory.dmp

    Filesize

    440KB

  • memory/4888-1045-0x00000000061E0000-0x000000000622C000-memory.dmp

    Filesize

    304KB

  • memory/4888-1046-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

    Filesize

    4KB

  • memory/4888-2-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-1-0x00000000001E0000-0x00000000002E2000-memory.dmp

    Filesize

    1.0MB

  • memory/4888-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

    Filesize

    4KB

  • memory/4888-1047-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB

  • memory/4888-1048-0x0000000007460000-0x0000000007A04000-memory.dmp

    Filesize

    5.6MB

  • memory/4888-1049-0x0000000005700000-0x0000000005754000-memory.dmp

    Filesize

    336KB

  • memory/4888-1053-0x0000000074EB0000-0x0000000075660000-memory.dmp

    Filesize

    7.7MB