Overview

overview

10

Static

static

10

AsyncClientnownow.exe

windows7-x64

10

AsyncClientnownow.exe

windows10-2004-x64

10

Sharing

Copy URL
Twitter E-mail

General

  • Target

    AsyncClientnownow.exe

  • Size

    45KB

  • Sample

    230129-b34j9shd74

  • MD5

    e9d6d1ed7007d55c6a9ec576ff1f0172

  • SHA1

    7289b1f566e382cb9a797111a178db1c726372c3

  • SHA256

    7ba8bdf289bdd5250fa389e294162b97701554b42dbd8757b96c7780f8286cdb

  • SHA512

    86feb2e1d310fc0594bda26079568d772b77d3b381968b8f4d8d9a8415b452e23d3d33ca370b75621058caf0e36b806a9f252cc8be3864fa9945f93f02b980ce

  • SSDEEP

    768:ZrfRmg7oB6ZXW7fzTyyk7MeVNZwcxwduOfzjbIOgX3ieukFDYT4DBzZbx:ZrfRmi3y7eOhvf3bWXSeZDYotbx

Score
10/10
asyncratmodiloaderremcosdefaultjan2023persistencerattrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

154.12.234.207:6606

154.12.234.207:7707

154.12.234.207:8808
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Extracted

Family

remcos

Botnet

Jan2023

C2

retsuportm.ddnsfree.com:2404

spreadrem1.ddnsfree.com:2404
Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    jkjhuy

  • mouse_option

    false

  • mutex

    winwin-BXOY7N

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Targets

    • Target

      AsyncClientnownow.exe

    • Size

      45KB

    • MD5

      e9d6d1ed7007d55c6a9ec576ff1f0172

    • SHA1

      7289b1f566e382cb9a797111a178db1c726372c3

    • SHA256

      7ba8bdf289bdd5250fa389e294162b97701554b42dbd8757b96c7780f8286cdb

    • SHA512

      86feb2e1d310fc0594bda26079568d772b77d3b381968b8f4d8d9a8415b452e23d3d33ca370b75621058caf0e36b806a9f252cc8be3864fa9945f93f02b980ce

    • SSDEEP

      768:ZrfRmg7oB6ZXW7fzTyyk7MeVNZwcxwduOfzjbIOgX3ieukFDYT4DBzZbx:ZrfRmi3y7eOhvf3bWXSeZDYotbx

    Score
    10/10
    asyncratmodiloaderdefaultrattrojanremcosjan2023persistence

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • ModiLoader, DBatLoader

      ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.

      trojanmodiloader

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Async RAT payload

      rat

    • ModiLoader Second Stage

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Remote System Discovery

1
T1018

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks