Overview

overview

10

Static

static

3

Bygay Ultimatum.exe

windows7-x64

10

Bygay Ultimatum.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    Bygay Ultimatum.exe

  • Size

    111KB

  • Sample

    240522-yv23sseg95

  • MD5

    69a08abd99af2c0de3ddae4f041579e2

  • SHA1

    de04d6d17aea96d673f0ded3cb5731d4b62b97bc

  • SHA256

    34ddc970cca5e3a8646c6355d21d74c3c6405871f14306740b420395c3df65a7

  • SHA512

    bd1244e34d6fa7fa080e272fe5371e6f1318a90b864da18aff14b999496fc64d1bb9a4573d6ce749f20cda631a05f64bdbdb86c100840cb1171eedaa29947b25

  • SSDEEP

    3072:p1HXoZq4xFSz8BIVJ91frkQIi/URe8642ZCUeFQ:fXSq4HSz8BIwBi/UM86xleF

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

polaris1314-38723.portmap.host:38723

Attributes
  • delay

    1

  • install

    true

  • install_file

    svchost.exe

  • install_folder

    %Temp%

aes.plain

Targets

    • Target

      Bygay Ultimatum.exe

    • Size

      111KB

    • MD5

      69a08abd99af2c0de3ddae4f041579e2

    • SHA1

      de04d6d17aea96d673f0ded3cb5731d4b62b97bc

    • SHA256

      34ddc970cca5e3a8646c6355d21d74c3c6405871f14306740b420395c3df65a7

    • SHA512

      bd1244e34d6fa7fa080e272fe5371e6f1318a90b864da18aff14b999496fc64d1bb9a4573d6ce749f20cda631a05f64bdbdb86c100840cb1171eedaa29947b25

    • SSDEEP

      3072:p1HXoZq4xFSz8BIVJ91frkQIi/URe8642ZCUeFQ:fXSq4HSz8BIwBi/UM86xleF

    Score
    10/10
    asyncratdefaultrat

    • AsyncRat

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

      ratasyncrat

    • Async RAT payload

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

1
T1053

Persistence

Scheduled Task/Job

1
T1053

Privilege Escalation

Scheduled Task/Job

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks