General

  • Target

    1wwyaeeCYc.gz

  • Size

    44KB

  • Sample

    230601-gyf63ach64

  • MD5

    bc6149d6d86b23d6a275f8fd3a448b82

  • SHA1

    cc47e398e2effce6bb6beb4329ce5d372f22cc40

  • SHA256

    f5d3df7ed5a6a84b14c3200752e6a43b3d8f23ab08fb0c1f7f7e192bb48cb206

  • SHA512

    4d47965063df8d05c31474c2045a2088eb7a0101427c0bc17bb4e914d75bc892fd65eb552284ac5b04283eaea6c488ca900fd986d19f3c732b29f542255a0b4d

  • SSDEEP

    768:jKg+RI+KBAWz/PzGjez250gYjimQozkMUx9l3rE7ck7/OLG8IDp9L7QMN:jF+foj3zYvqYYPk9iwzG8IDv7

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

192.3.101.190:2015

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      1wwyaeeCYc.exe

    • Size

      96KB

    • MD5

      749fdef07e576ac40e42568780bd26bd

    • SHA1

      93d0094038126ec31a5f0a9251318cdfb163cade

    • SHA256

      a58ee92cdb05c92453c009c0792676ce815af1298cbbe9f36407d4933b8b942e

    • SHA512

      d7e97331ce90dffa4d3da967e35c5b03b8454e220d2104f54c0f476ae73d5de78917e8cb0fcdd2df1b251e584cab38fa5a339195e8dfc845201f8d19e5a2ffe2

    • SSDEEP

      1536:H0l3SSJshJixmFLZbIUfyVAEfUtweBXDMKrxWGHXKBJNfGtLF9pZO:9dhJVZbIUqVAbFDM0c7JNfAJ9pZO

    • AsyncRat

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

    • Async RAT payload

    • Checks computer location settings

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

    • Executes dropped EXE

    • Uses the VBS compiler for execution

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Scheduled Task

1
T1053

Persistence

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Scripting

1
T1064

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Tasks