Overview

overview

10

Static

static

10

PetSim99GUI.exe

windows7-x64

10

PetSim99GUI.exe

windows10-2004-x64

10

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General

  • Target

    PetSim99GUI.exe

  • Size

    48KB

  • Sample

    250120-j9nrdszpft

  • MD5

    f5fa1fb705307bd25ca0d0408b8d6684

  • SHA1

    31dffff48303612d94d4c10083ade7c6b3b777a3

  • SHA256

    1659db1c128cc72c1d5db8ec73a93cc89cc684f00a4c2b83b76fef32af45fe07

  • SHA512

    a2803bf7b0662893c1bbc5f2bf876690e57fbf611225cfd968cd04d9c3a005b3d71b27e2df8003ddfa2fcf353691957ea27b119dad88073f8adc9d5114abd246

  • SSDEEP

    768:OugvNTjgkH7F7WUHF9pmo2q7cJ/IP8Xjog1VPI0HgmP0i0bc64EU7XoEFmSwBqRb:OugvNTcIb2te3gE0H6dbcjE+z5vdzH

Score
10/10
asyncratdefaultdiscoveryevasionratspywarestealertrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

letsgetdigging.hopto.org:6606

Mutex

gwp6EO1O6Isj

Attributes
  • delay

    3

  • install

    true

  • install_file

    PS99.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      PetSim99GUI.exe

    • Size

      48KB

    • MD5

      f5fa1fb705307bd25ca0d0408b8d6684

    • SHA1

      31dffff48303612d94d4c10083ade7c6b3b777a3

    • SHA256

      1659db1c128cc72c1d5db8ec73a93cc89cc684f00a4c2b83b76fef32af45fe07

    • SHA512

      a2803bf7b0662893c1bbc5f2bf876690e57fbf611225cfd968cd04d9c3a005b3d71b27e2df8003ddfa2fcf353691957ea27b119dad88073f8adc9d5114abd246

    • SSDEEP

      768:OugvNTjgkH7F7WUHF9pmo2q7cJ/IP8Xjog1VPI0HgmP0i0bc64EU7XoEFmSwBqRb:OugvNTcIb2te3gE0H6dbcjE+z5vdzH

    Score
    10/10
    asyncratdefaultdiscoveryevasionratspywarestealertrojan

    • AsyncRat

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

      ratasyncrat

    • Asyncrat family

      asyncrat

    • Modifies Windows Defender Real-time Protection 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

      evasiontrojan

    • Drops desktop.ini file(s)

    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

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Modify Registry

2
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