Overview

overview

10

Static

static

10

AsyncClient2.exe

windows7-x64

10

AsyncClient2.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    AsyncClient2.exe

  • Size

    47KB

  • Sample

    250228-s11t2a1r16

  • MD5

    a9ae63224c966474187616630f021223

  • SHA1

    bdc84d7b53a5efa08370018612015fe3acf5b623

  • SHA256

    93fff1de1a8e1d6adc48423aa83dd7b7ade28afa1165ee52a9a265d963bdca33

  • SHA512

    5c1afb9cf12190d28a6f764002441b060e30bd2dd12451d2c8023b9c2e78d908ed1116d5a69aa40ea12d0c5b6a40806610947c548081ec58bce24d1366b48564

  • SSDEEP

    768:QuyxNTAoZjRWUJd9bmo2qLZk3+Zn0BB4PIXLB8H6n0bvEOuSsP7rnmVj6ewb7BDM:QuyxNTAGL2ns0BB9XLBq60bvEAs/n6jR

Score
10/10
asyncratdefaultdefense_evasiondiscoveryevasionratspywarestealertrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

tagol51982-62186.portmap.host:62186

Mutex

auh8YpVUAiXR

Attributes
  • delay

    3

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      AsyncClient2.exe

    • Size

      47KB

    • MD5

      a9ae63224c966474187616630f021223

    • SHA1

      bdc84d7b53a5efa08370018612015fe3acf5b623

    • SHA256

      93fff1de1a8e1d6adc48423aa83dd7b7ade28afa1165ee52a9a265d963bdca33

    • SHA512

      5c1afb9cf12190d28a6f764002441b060e30bd2dd12451d2c8023b9c2e78d908ed1116d5a69aa40ea12d0c5b6a40806610947c548081ec58bce24d1366b48564

    • SSDEEP

      768:QuyxNTAoZjRWUJd9bmo2qLZk3+Zn0BB4PIXLB8H6n0bvEOuSsP7rnmVj6ewb7BDM:QuyxNTAGL2ns0BB9XLBq60bvEAs/n6jR

    Score
    10/10
    asyncratdefaultdefense_evasiondiscoveryevasionratspywarestealertrojan

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Modifies Windows Defender DisableAntiSpyware settings

      evasiontrojan

    • Modifies Windows Defender Real-time Protection settings

      defense_evasiontrojan

    • Modifies Windows Defender TamperProtection settings

      evasiontrojan

    • Async RAT payload

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

      spywarestealer

    • Windows security modification

      defense_evasiontrojan
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Create or Modify System Process

3
T1543

Windows Service

3
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

4
T1562

Disable or Modify Tools

4
T1562.001

Modify Registry

4
T1112

Credential Access

Credentials from Password Stores

1
T1555

Credentials from Web Browsers

1
T1555.003

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Tasks