Resubmissions

12-05-2022 21:08

220512-zzbl3sabg3 10

10-05-2022 12:31

220510-pp1hcabehk 10

04-05-2022 21:07

220504-zynv1shdfj 10

General

  • Target

    15.dll

  • Size

    3.7MB

  • Sample

    220504-zynv1shdfj

  • MD5

    8c85cc84e654fa7d4222e8c68dff334f

  • SHA1

    9d8a1d0e1854d2f39e012b39df4651cb11663ca4

  • SHA256

    897bf7aaeee44df44e04fb6b0a276d0be76298569252fe157a39d6071a17631c

  • SHA512

    d0e57b9617c9decab2542b4eec79da7191c4e381d4915b2ce5aa6ab71f1e7b7b8597869563a9219ca1b6fe177e50e392e2d44cf835f9f012d5b129b736f18d7e

Malware Config

Extracted

Family

bumblebee

C2

23.82.128.149:443

108.62.12.203:443

Attributes
  • group_id

    mc405

    BLACK

Targets

    • Target

      15.dll

    • Size

      3.7MB

    • MD5

      8c85cc84e654fa7d4222e8c68dff334f

    • SHA1

      9d8a1d0e1854d2f39e012b39df4651cb11663ca4

    • SHA256

      897bf7aaeee44df44e04fb6b0a276d0be76298569252fe157a39d6071a17631c

    • SHA512

      d0e57b9617c9decab2542b4eec79da7191c4e381d4915b2ce5aa6ab71f1e7b7b8597869563a9219ca1b6fe177e50e392e2d44cf835f9f012d5b129b736f18d7e

    • BumbleBee

      BumbleBee is a webshell malware written in C++.

    • Enumerates VirtualBox registry keys

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Looks for VirtualBox Guest Additions in registry

    • Checks BIOS information in registry

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

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Virtualization/Sandbox Evasion

4
T1497

Discovery

Query Registry

5
T1012

Virtualization/Sandbox Evasion

4
T1497

System Information Discovery

1
T1082

Tasks