General

  • Target

    70984b87_by_Libranalysis

  • Size

    22KB

  • Sample

    210514-424r5jrx9n

  • MD5

    70984b874999940634832f629fadc7e2

  • SHA1

    a904157e2027e98f651f8186998c8c9a4d5981d5

  • SHA256

    2ab0259da85215561573043bdec94b68e0e2cf391de21ef69f5f03b16020fe62

  • SHA512

    b23415a9c623a8d28759ad740a39fa2f57d41e8a0577da6015c9ad1a4dc002bd2e41b015915200f1ac1629c4829ab5a192a0a3eaed856648df657e1f84a06213

Score
10/10

Malware Config

Extracted

Family

buer

C2

https://162.244.81.87/

http://162.244.81.87:8080/

Targets

    • Target

      214053f.bin

    • Size

      38KB

    • MD5

      1f4ce9581d372c6297794233cbeca1ea

    • SHA1

      c9661c46db129433e350d1ca3fd0ebd79b190f88

    • SHA256

      f23db00ee052d07bf66ce6aa644ead488e182dfb21c4c5c42bb9677db839a310

    • SHA512

      571c4a811586bf26b3de8cbcc59be0b27f4fb58826844e8ef73dcf8c61af8c918dd8c06f42339867b4877f00ab11e8ec8d1901afbde57e967748ccd23425447f

    Score
    10/10
    • Buer

      Buer is a new modular loader first seen in August 2019.

    • Modifies WinLogon for persistence

    • Buer Loader

      Detects Buer loader in memory or disk.

    • Executes dropped EXE

    • Deletes itself

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

MITRE ATT&CK Enterprise v6

Tasks