General

  • Target

    uPh2C

  • Size

    58KB

  • Sample

    241120-sz5ftstkeq

  • MD5

    705e54950f28c565dbe4818eb2be7423

  • SHA1

    19ff36dbb676a64197e0a645adf317d2b9cc17d3

  • SHA256

    0844465dfa8bb241f452c320bc6caf6cec645b461dbcd468a2afc9dc900e595c

  • SHA512

    cc9b21272ba9a2fa038a82c8206303575ce9374f1275b9c394407828c475789616e914befecf58e25c94d451fa92d5a313a611188516b4120015846dac56288f

  • SSDEEP

    1536:a0vDHXpEjO9Xwq2Sk6e2Nhxdd5pdLv+l/4QmuWOMP3HXpEjO9Xwq2Sk6e2Nhxddi:aoDHXp+q62Nhxdd5pdq61HXp+q62Nhx6

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

exe.dropper

https://1017.filemail.com/api/file/get?filekey=2Aa_bWo9Reu45t7BU1kVgsd9pT9pgSSlvStGrnTICfFhmTKj3LC6SQtIcOc_T35w&pk_vid=fd4f614bb209c62c1730945176a0904f

Extracted

Family

asyncrat

Version

1.0.7

Botnet

1

C2

148.113.165.11:3236

Mutex

asassassas

Attributes
  • delay

    1

  • install

    false

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      uPh2C

    • Size

      58KB

    • MD5

      705e54950f28c565dbe4818eb2be7423

    • SHA1

      19ff36dbb676a64197e0a645adf317d2b9cc17d3

    • SHA256

      0844465dfa8bb241f452c320bc6caf6cec645b461dbcd468a2afc9dc900e595c

    • SHA512

      cc9b21272ba9a2fa038a82c8206303575ce9374f1275b9c394407828c475789616e914befecf58e25c94d451fa92d5a313a611188516b4120015846dac56288f

    • SSDEEP

      1536:a0vDHXpEjO9Xwq2Sk6e2Nhxdd5pdLv+l/4QmuWOMP3HXpEjO9Xwq2Sk6e2Nhxddi:aoDHXp+q62Nhxdd5pdq61HXp+q62Nhx6

    • AsyncRat

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

    • Asyncrat family

    • Blocklisted process makes network request

    • 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.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks