General

  • Target

    r.msi

  • Size

    270.5MB

  • Sample

    230313-j1z33ahc62

  • MD5

    522c0b0d445c62cdeb0a80bcce645d57

  • SHA1

    5dad52c67d114f7a3a5a1e7ae5b15b581054d468

  • SHA256

    957639998125a31c998b0104dba7f463d0659716a0a5b62fcc82eb28a0c0477b

  • SHA512

    97da31389ca0986c5f63244573ad0edd6c83feb7e9c44557acfb51832db308c6165cdd390d1555ee8dec941cc0cb896fa1ccc59cbf7b9de9610003f0bd2e8a48

  • SSDEEP

    6291456:FTUNwNgD8hhlK4sCC90uWHgnNfTSeHRAod2da0Dmq75UpY21DYJ5HI:1UN5DqKnCULtnlnAM2kE5Gco

Malware Config

Extracted

Family

bumblebee

rc4.plain

Extracted

Family

bumblebee

Botnet

citr10803

C2

104.168.171.97:443

149.255.35.138:443

51.83.250.168:443

rc4.plain

Targets

    • Target

      r.msi

    • Size

      270.5MB

    • MD5

      522c0b0d445c62cdeb0a80bcce645d57

    • SHA1

      5dad52c67d114f7a3a5a1e7ae5b15b581054d468

    • SHA256

      957639998125a31c998b0104dba7f463d0659716a0a5b62fcc82eb28a0c0477b

    • SHA512

      97da31389ca0986c5f63244573ad0edd6c83feb7e9c44557acfb51832db308c6165cdd390d1555ee8dec941cc0cb896fa1ccc59cbf7b9de9610003f0bd2e8a48

    • SSDEEP

      6291456:FTUNwNgD8hhlK4sCC90uWHgnNfTSeHRAod2da0Dmq75UpY21DYJ5HI:1UN5DqKnCULtnlnAM2kE5Gco

    • BumbleBee

      BumbleBee is a webshell malware written in C++.

    • Blocklisted process makes network request

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    • Checks system information in the registry

      System information is often read in order to detect sandboxing environments.

    • Suspicious use of NtCreateThreadExHideFromDebugger

MITRE ATT&CK Enterprise v6

Tasks