Analysis

  • max time kernel
    145s
  • max time network
    147s
  • platform
    windows11-21h2_x64
  • resource
    win11-20240709-en
  • resource tags

    arch:x64arch:x86image:win11-20240709-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    21-07-2024 06:48

General

  • Target

    9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe

  • Size

    1.2MB

  • MD5

    017fe34b7a5a976740fb655f2a6e626d

  • SHA1

    a389020efb59f92042306499b98de8d5c2951dda

  • SHA256

    9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090

  • SHA512

    8289dc576d5b4bbf11f69c98cbe337e9365e77add7965b7c1b1b2c8f1b77d1e897dcff023b5ce22376ecb83370c747753318cf68b9ff6c851733566e4b52edcf

  • SSDEEP

    24576:3P9blhVTV8VN3b5J3r0nMkOSMrcnNN9SyASIEtJlWB:ln7iN3NJ3r6M1MXtIE3l

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Mutex

Aakn1515knAakn1515kn

Attributes
  • c2_url_file

    http://update-checker-status.cc/OCB-Async.txt

  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Signatures

  • AsyncRat

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

  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe
    "C:\Users\Admin\AppData\Local\Temp\9108fcda60545f93af917e30af85c7b19d88158f1298ce32624d35a6e0251090.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3964
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:4592

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/3964-8-0x0000000031090000-0x00000000310F6000-memory.dmp

    Filesize

    408KB

  • memory/3964-4-0x00000000059F0000-0x0000000005A82000-memory.dmp

    Filesize

    584KB

  • memory/3964-0-0x0000000074D4E000-0x0000000074D4F000-memory.dmp

    Filesize

    4KB

  • memory/3964-3-0x0000000005750000-0x000000000575A000-memory.dmp

    Filesize

    40KB

  • memory/3964-9-0x0000000031530000-0x00000000315C2000-memory.dmp

    Filesize

    584KB

  • memory/3964-5-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB

  • memory/3964-6-0x0000000005AF0000-0x0000000005B12000-memory.dmp

    Filesize

    136KB

  • memory/3964-10-0x0000000031B80000-0x0000000032126000-memory.dmp

    Filesize

    5.6MB

  • memory/3964-2-0x00000000057E0000-0x00000000058CA000-memory.dmp

    Filesize

    936KB

  • memory/3964-1-0x0000000000C70000-0x0000000000DA8000-memory.dmp

    Filesize

    1.2MB

  • memory/3964-7-0x0000000005B20000-0x0000000005E77000-memory.dmp

    Filesize

    3.3MB

  • memory/3964-14-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB

  • memory/4592-12-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/4592-15-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB

  • memory/4592-16-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB

  • memory/4592-17-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB

  • memory/4592-18-0x0000000074D40000-0x00000000754F1000-memory.dmp

    Filesize

    7.7MB