Resubmissions

01-02-2022 09:10

220201-k4279scee5 10

15-01-2022 13:42

220115-qztyzsefhn 10

12-01-2022 12:30

220112-ppk3nacfbl 10

10-01-2022 10:49

220110-mwsd7sebe3 10

07-01-2022 20:35

220107-zc2jzsdaeq 10

07-01-2022 10:05

220107-l4rxzacba8 10

06-01-2022 22:46

220106-2qch5abff5 10

06-01-2022 19:07

220106-xsnxqabhfl 10

06-01-2022 15:26

220106-svedvabda5 10

06-01-2022 15:25

220106-st3p2sbgcq 10

General

  • Target

    4446186b0133b453f35a839b841ba453377c9a5638c1d81ee2313bb3adc22aaf

  • Size

    339KB

  • Sample

    220201-k4279scee5

  • MD5

    b75726b4b619811b4c50d917822a4083

  • SHA1

    ed8b418d7357609ce03c4f7123c0bb711b9d227d

  • SHA256

    4446186b0133b453f35a839b841ba453377c9a5638c1d81ee2313bb3adc22aaf

  • SHA512

    59516fdf6334f4005c7881322eb9a057939804e18ba8f13d0cb48fdc460aab19570c482e87700c6884807e1c885864ed422646f3150d9df731a10ecf5a7e05c9

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

rc4.i32
rc4.i32

Targets

    • Target

      4446186b0133b453f35a839b841ba453377c9a5638c1d81ee2313bb3adc22aaf

    • Size

      339KB

    • MD5

      b75726b4b619811b4c50d917822a4083

    • SHA1

      ed8b418d7357609ce03c4f7123c0bb711b9d227d

    • SHA256

      4446186b0133b453f35a839b841ba453377c9a5638c1d81ee2313bb3adc22aaf

    • SHA512

      59516fdf6334f4005c7881322eb9a057939804e18ba8f13d0cb48fdc460aab19570c482e87700c6884807e1c885864ed422646f3150d9df731a10ecf5a7e05c9

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Disables Task Manager via registry modification

    • Executes dropped EXE

    • Checks computer location settings

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

    • Deletes itself

    • Loads dropped DLL

    • Adds Run key to start application

    • Enumerates connected drives

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

    • Modifies WinLogon

    • Program crash

    • Sets desktop wallpaper using registry

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks