Overview

overview

10

Static

static

8

e5eb334cd0...1f.exe

windows7-x64

8

e5eb334cd0...1f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    e5eb334cd06b77b445fd80a1d4e73f0137955ace8a2eebc3e59ed8b27a08cc1f

  • Size

    537KB

  • Sample

    221205-g5qn3sda96

  • MD5

    17b4433e4688d03b6908bb235b17371f

  • SHA1

    5571a95725c7b175013c269fcf167ff55008c8e3

  • SHA256

    e5eb334cd06b77b445fd80a1d4e73f0137955ace8a2eebc3e59ed8b27a08cc1f

  • SHA512

    6ec8f639fd78c41be9dcb1730ae74547147f4cf94bab30e5420ab0aa6796c57232e56d460589a13f591f5ed35591b615081bdfb7eddd267d509d5ce1d705d30e

  • SSDEEP

    12288:h4lThwQGIQilGzWTifG1g6eUmRP0xAt3hIPGk8T:ilTOFq7TifGG6+J0xAt3qel

Score
10/10
asyncratdefendersmartscrensystem guard runtimepersistenceratupx

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

System Guard Runtime

C2

85.105.88.221:2531

Mutex

System Guard Runtime

Attributes
  • delay

    3

  • install

    false

  • install_file

    System Guard Runtime

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DefenderSmartScren

C2

217.64.31.3:8437

Mutex

DefenderSmartScren

Attributes
  • delay

    3

  • install

    false

  • install_file

    SecurityHealtheurvice.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      e5eb334cd06b77b445fd80a1d4e73f0137955ace8a2eebc3e59ed8b27a08cc1f

    • Size

      537KB

    • MD5

      17b4433e4688d03b6908bb235b17371f

    • SHA1

      5571a95725c7b175013c269fcf167ff55008c8e3

    • SHA256

      e5eb334cd06b77b445fd80a1d4e73f0137955ace8a2eebc3e59ed8b27a08cc1f

    • SHA512

      6ec8f639fd78c41be9dcb1730ae74547147f4cf94bab30e5420ab0aa6796c57232e56d460589a13f591f5ed35591b615081bdfb7eddd267d509d5ce1d705d30e

    • SSDEEP

      12288:h4lThwQGIQilGzWTifG1g6eUmRP0xAt3hIPGk8T:ilTOFq7TifGG6+J0xAt3qel

    Score
    10/10
    upxasyncratdefendersmartscrensystem guard runtimepersistencerat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • Async RAT payload

      rat

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

      upx

    • Checks computer location settings

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

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks