General

  • Target

    8eb6236d11b0463ae82eb268ccc1f7e9.bin

  • Size

    460KB

  • Sample

    240904-bzmscatenf

  • MD5

    dead6848ad078b7fb5c1556b437bdc1f

  • SHA1

    61657991731bb4ded376abe9ac223ee7c721be2b

  • SHA256

    fa85009348923daee9acc7adef2f6926f6442aabffcf393abaae4ab17cc9795c

  • SHA512

    dc8e5f8de0c606b4f844ea6cb0de8772cfe3a685c6396aafa8d148f7a3e4bce38d45106a108dd749c66565690c4c1567f496621b44dadb0bab43d0c2dbe1a719

  • SSDEEP

    6144:spJ5n0J0bFlxjOMGCcnkuuTEZvUT2yyRudXQPDPVzae+EOW6G3BWPEEI:2J1O9knTmvUbyEQPWEjX48N

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

fresh01.ddns.net:2256

Mutex

waVkxgc3A4Ar

Attributes
  • delay

    3

  • install

    true

  • install_file

    logs.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      37d1af5c7af78a7bcb958b0b71440091bec44ec86f33cd7547b18eb748d0bc01.exe

    • Size

      579KB

    • MD5

      8eb6236d11b0463ae82eb268ccc1f7e9

    • SHA1

      08e1140bb7dd86231b8dbbc686e894cfe1d1c7b0

    • SHA256

      37d1af5c7af78a7bcb958b0b71440091bec44ec86f33cd7547b18eb748d0bc01

    • SHA512

      d07bf2ec8ca8a57475b1d03214dea1b5c2f300962618d8fde5d987d94c749a0282cb639d6162d79ba10010c05f3df22b7e5d1036cb91bfdd1475198f82fc1af5

    • SSDEEP

      12288:sCn4AyHnseftJpS/mErsKah4dNTTdAPCDbWhwP8wEV:/nEnseftbYmtX4pTywP8R

    • AsyncRat

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

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    • Target

      $PLUGINSDIR/BgImage.dll

    • Size

      7KB

    • MD5

      49998d066af103d06b56f5b4c76b1497

    • SHA1

      b7dce166147f40dfa17f5ca950c4e324a10d04be

    • SHA256

      95042dbe7428461ee7fd210acf37040eb921012c7b32f66cb54766f0a16bb5b6

    • SHA512

      61b0d75ef3a18c8c13ad8c614a012a71cbc4f6fd4bba0aa0c7b866e1a8fbf5f9fdb3e012a3566586d47fc8b456a7de36a06a0d70cdf27e504aac64eab37555d7

    • SSDEEP

      96:8eQMA6z4f7TI20Y1wircawlkX1b3+LDfbAJ8uLzqkDnLiEQjJ3KxkP:tChfHv08wocw3+e8uLmiLpmP

    Score
    3/10
    • Target

      $PLUGINSDIR/nsDialogs.dll

    • Size

      9KB

    • MD5

      19d3373e403a6e724cfa1563dfd1f463

    • SHA1

      4917547b355a91e9431879209f56925097bf4fb3

    • SHA256

      873fa0c52eae7cfbed56ea18b21fad0ca8f018ab7f305bd1db1a3ec454e353d1

    • SHA512

      b6f6db23376ade4bb864ea14244980612f42f322d3915540090bfe8edc80e9577b7aec3589bd587ca47a729371ed8ab8e6e23031bb3e3f524d48783637646193

    • SSDEEP

      96:oXF7lf7AR1VhrfzBik0cxM2DjDf3GEkniJnifvcx4I8qndYv0PLE:oXFl7wrLBn0REc0Jx3dO0PLE

    Score
    3/10
    • Target

      $PLUGINSDIR/nsExec.dll

    • Size

      6KB

    • MD5

      6c881f00ba860b17821d8813aa34dbc6

    • SHA1

      0e5a1e09b1ce1bc758d6977b913a8d9ccbe52a13

    • SHA256

      bcb93204bd1854d0c34fa30883bab51f6813ab32abf7fb7d4aeed21d71f6af87

    • SHA512

      c78d6f43aa9bb35260a7bd300392ce809282660283fa6cb3059bae50d6db229b0b853cab7c949d4bdf19309fb183257b1c9feb01a66347e1c0adeb21543315b6

    • SSDEEP

      96:DOBtYZKtPsrqBApt1JHpb9XWk7Qe06iE6mE6YNFyVOHd0+ugwEX:DtZKtrAJJJbP7iEHEbN8Ved0PM

    Score
    3/10

MITRE ATT&CK Enterprise v15

Tasks