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Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240709-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
  • submitted
    13/07/2024, 12:34

General

  • Target

    e16bcff77a3468fa10bf4d67fb5e6c7d8d19564320895acdff5e1aaef74b5cfc.exe

  • Size

    1.3MB

  • MD5

    4ecb15fe8939eacf799015f8419f407e

  • SHA1

    06231d45f5a38c4fcef3ebf3d42b363c52cf23e3

  • SHA256

    e16bcff77a3468fa10bf4d67fb5e6c7d8d19564320895acdff5e1aaef74b5cfc

  • SHA512

    da1e5edeaa85a71ec0097b28f8cf1a63aeea7b6864af647b9254e1bc50782fce0cb4e27f743cc4add43911cbd57852419047b2878cd440d0c51134fea158e9d7

  • SSDEEP

    12288:mvNXAe2V/HjYmnkUytIS+5KTXF81q2rfuEI4b9YWFyZ:02VsofyuS+5Kp8FrflI4hty

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 behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e16bcff77a3468fa10bf4d67fb5e6c7d8d19564320895acdff5e1aaef74b5cfc.exe
    "C:\Users\Admin\AppData\Local\Temp\e16bcff77a3468fa10bf4d67fb5e6c7d8d19564320895acdff5e1aaef74b5cfc.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2724
    • 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:4956

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2724-8-0x0000000006910000-0x000000000695C000-memory.dmp

    Filesize

    304KB

  • memory/2724-9-0x0000000038020000-0x0000000038086000-memory.dmp

    Filesize

    408KB

  • memory/2724-2-0x0000000005850000-0x0000000005DF4000-memory.dmp

    Filesize

    5.6MB

  • memory/2724-3-0x00000000052A0000-0x0000000005332000-memory.dmp

    Filesize

    584KB

  • memory/2724-5-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/2724-4-0x00000000053B0000-0x00000000053BA000-memory.dmp

    Filesize

    40KB

  • memory/2724-1-0x00000000006E0000-0x000000000082C000-memory.dmp

    Filesize

    1.3MB

  • memory/2724-6-0x00000000055A0000-0x00000000055F2000-memory.dmp

    Filesize

    328KB

  • memory/2724-0-0x000000007473E000-0x000000007473F000-memory.dmp

    Filesize

    4KB

  • memory/2724-7-0x0000000006870000-0x00000000068A0000-memory.dmp

    Filesize

    192KB

  • memory/2724-13-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4956-11-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/4956-14-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4956-15-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4956-16-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB

  • memory/4956-17-0x0000000074730000-0x0000000074EE0000-memory.dmp

    Filesize

    7.7MB