General

  • Target

    47a46de105177d826cbda74051f7f9d7bb95ed079c2e636743f9f04ad8c6c4a7

  • Size

    45KB

  • Sample

    240806-rxzl5a1gpl

  • MD5

    3b86abe4c79286ed06965c268968c03d

  • SHA1

    64afe64ee719aa3526023a5f7edacd44db21bde4

  • SHA256

    47a46de105177d826cbda74051f7f9d7bb95ed079c2e636743f9f04ad8c6c4a7

  • SHA512

    68f108646437fd72622cd1f719b2092b095e67500502981c4b605c64acaa38c12f46a82e47318b405137e5112ff82ccb51bfbb953b67fd3d1e9a5de1c2874483

  • SSDEEP

    768:juAKNTR4ydbWUnrGJmo2q7zL5P02FUFdxYkk8PIWzjbAgX3ih8QNd4sqyVUbGKZ9:juAKNTRZ22oLDmWBW3bnXSh8QN6sqEWh

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

C2

blue.o7lab.me:7777

server.underground-cheat.xyz:7777

Mutex

dtDtRWyW1m1g

Attributes
  • delay

    3

  • install

    false

  • install_file

    $77WinUpdate.exe

  • install_folder

    %AppData%

aes.plain

Extracted

Family

asyncrat

Version

5.0.5

Botnet

underground-cheat.com

C2

server.underground-cheat.xyz:4449

bluedns.o7lab.me:4449

Mutex

underground-cheat.comunderground-cheat.com

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      47a46de105177d826cbda74051f7f9d7bb95ed079c2e636743f9f04ad8c6c4a7

    • Size

      45KB

    • MD5

      3b86abe4c79286ed06965c268968c03d

    • SHA1

      64afe64ee719aa3526023a5f7edacd44db21bde4

    • SHA256

      47a46de105177d826cbda74051f7f9d7bb95ed079c2e636743f9f04ad8c6c4a7

    • SHA512

      68f108646437fd72622cd1f719b2092b095e67500502981c4b605c64acaa38c12f46a82e47318b405137e5112ff82ccb51bfbb953b67fd3d1e9a5de1c2874483

    • SSDEEP

      768:juAKNTR4ydbWUnrGJmo2q7zL5P02FUFdxYkk8PIWzjbAgX3ih8QNd4sqyVUbGKZ9:juAKNTRZ22oLDmWBW3bnXSh8QN6sqEWh

    • AsyncRat

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

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Command and Scripting Interpreter: PowerShell

      Start PowerShell.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks