Overview

overview

10

Static

static

871f23d521...c5.exe

windows7-x64

8

871f23d521...c5.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    871f23d521f271b63ea5d3041e097cc5.exe

  • Size

    5KB

  • Sample

    221113-vwzghsfb7x

  • MD5

    871f23d521f271b63ea5d3041e097cc5

  • SHA1

    33c118c290f67790a188d523c8afc5c3159de978

  • SHA256

    697e12598f923f1b5dcf2d81dc8db9cd944977cfcb9687575307118181f7c43e

  • SHA512

    a39a6521e1e6db0c8facce2d773a15c6520bfe12f694273d30b187cb534a89c65e776341431ef15ab7fb7a63cbade578caeb2e718821aba82cc4c6cc4e0de271

  • SSDEEP

    96:jf79xkCFvY5c/bUquGm5tlNtUqrGueGCd3oj8Erl:n9xPFg5AUquxXNtUqrlCdG

Score
10/10
asyncratsystem guard runtimepersistencerat

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

Targets

    • Target

      871f23d521f271b63ea5d3041e097cc5.exe

    • Size

      5KB

    • MD5

      871f23d521f271b63ea5d3041e097cc5

    • SHA1

      33c118c290f67790a188d523c8afc5c3159de978

    • SHA256

      697e12598f923f1b5dcf2d81dc8db9cd944977cfcb9687575307118181f7c43e

    • SHA512

      a39a6521e1e6db0c8facce2d773a15c6520bfe12f694273d30b187cb534a89c65e776341431ef15ab7fb7a63cbade578caeb2e718821aba82cc4c6cc4e0de271

    • SSDEEP

      96:jf79xkCFvY5c/bUquGm5tlNtUqrGueGCd3oj8Erl:n9xPFg5AUquxXNtUqrlCdG

    Score
    10/10
    asyncratsystem 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

    • 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