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Analysis

  • max time kernel
    75s
  • max time network
    82s
  • platform
    windows11-21h2_x64
  • resource
    win11-20241007-en
  • resource tags

    arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    22/12/2024, 19:36

General

  • Target

    crss.exe

  • Size

    45KB

  • MD5

    4a5d7d4186532aa21ac55b4e688450f4

  • SHA1

    2066ab4948c8a7a58bc9ae705d01858fb8c60b21

  • SHA256

    9184ff2cdd05fcaf111db23123479c845b2ece2fedccc2524b2de592f9980876

  • SHA512

    9f7ba044b8f6eb5508e37e527f1052109a56099214caf808d6153daf12db5c0550bbb25b08e77d99be121c34a9a7151479a85d517656d80f41e94a8e08446fda

  • SSDEEP

    768:GuskdTsQA/qWU8H+wmo2qsVVllVq6GcPIXzjbhgX3D1shypaOUaT6BDZSx:GuskdTsnb2lV/o6GhX3bOXzWhy1DTkdQ

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

jt8iyre.localto.net:2101

jt8iyre.localto.net:55644

Mutex

AbAUwI3PK3e3

Attributes
  • delay

    3

  • install

    false

  • install_file

    winserve.exe

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Asyncrat family
  • 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.

  • Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\crss.exe
    "C:\Users\Admin\AppData\Local\Temp\crss.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    PID:2424

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2424-0-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/2424-1-0x0000000000980000-0x0000000000992000-memory.dmp

    Filesize

    72KB

  • memory/2424-2-0x00000000744E0000-0x0000000074C91000-memory.dmp

    Filesize

    7.7MB

  • memory/2424-3-0x00000000744EE000-0x00000000744EF000-memory.dmp

    Filesize

    4KB

  • memory/2424-4-0x00000000744E0000-0x0000000074C91000-memory.dmp

    Filesize

    7.7MB

  • memory/2424-7-0x0000000005C60000-0x0000000005CFC000-memory.dmp

    Filesize

    624KB

  • memory/2424-8-0x00000000062B0000-0x0000000006856000-memory.dmp

    Filesize

    5.6MB

  • memory/2424-9-0x0000000005D70000-0x0000000005DD6000-memory.dmp

    Filesize

    408KB