Overview

overview

10

Static

static

1

Social_Sec...41.exe

windows10-2004-x64

10

Social_Sec...41.exe

windows11-21h2-x64

10

Sharing

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General

  • Target
    sample.zip
  • Size 33.5MB
  • Sample250725-pm3vpazzbz
  • SHA256 56c80332c946c8585e38752b0eeacaee9fb330587d8b308e669a7be1b1e88722
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
asyncrataidefense_evasiondiscoveryexecutionpersistenceprivilege_escalationrat

Malware Config

Extracted

Family

  • asyncrat

Version

  • AWS | 3Losh

Botnet

  • AI

C2

  • private.dynuddns.net:56001

Mutex

  • AsyncMutex_alosh

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target
      Social_Security_Statement_852541.exe
    • Size 34.0MB
    • SHA256 45021e94e37d2f969ea06ebbb899e79c5c3a75e4ecdc3d3a65a419d580e036cc
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    asyncrataidefense_evasiondiscoveryexecutionpersistenceprivilege_escalationrat

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Async RAT payload

      rat

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Modifies file permissions

      discovery

    • Hide Artifacts: Hidden Window

      Windows that would typically be displayed when an application carries out an operation can be hidden.

      defense_evasion

    • Modifies Windows Firewall

      defense_evasion

    • Checks computer location settings

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

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Event Triggered Execution

1
T1546

Netsh Helper DLL

1
T1546.007

Defense Evasion

File and Directory Permissions Modification

1
T1222

Hide Artifacts

1
T1564

Hidden Window

1
T1564.003

Impair Defenses

1
T1562

Disable or Modify System Firewall

1
T1562.004

Credential Access

Discovery

Query Registry

4
T1012

System Information Discovery

3
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Tasks