General

  • Target

    WEXTRACT.exe

  • Size

    1.5MB

  • Sample

    231228-fwbm5aegem

  • MD5

    12382062c6abc23ebdf6aec25f383fa4

  • SHA1

    9834dc9a4fd1f037c574c27a932c96d68409c882

  • SHA256

    24b66c0d6f26f5de09b4cb7a2496bf87ad0ed9d45e846870dee70941b565bc3c

  • SHA512

    6cd21a5803f7a90d3ea2b1c6a05def58e337773378c0aced7ac9d3538fa1f9a539b4c992bbe7655aa052abd88cde1bc8475a3a780187ac25edba89ba5806f55c

  • SSDEEP

    49152:/I4a/fuUWyY2dhl3pmcmVFSD2TDi+SyEU/6QB4:wx/GUxmVoJvyR/6R

Malware Config

Extracted

Family

smokeloader

Version

2022

C2

http://77.91.68.29/fks/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

grome

C2

77.91.124.86:19084

Targets

    • Target

      WEXTRACT.exe

    • Size

      1.5MB

    • MD5

      12382062c6abc23ebdf6aec25f383fa4

    • SHA1

      9834dc9a4fd1f037c574c27a932c96d68409c882

    • SHA256

      24b66c0d6f26f5de09b4cb7a2496bf87ad0ed9d45e846870dee70941b565bc3c

    • SHA512

      6cd21a5803f7a90d3ea2b1c6a05def58e337773378c0aced7ac9d3538fa1f9a539b4c992bbe7655aa052abd88cde1bc8475a3a780187ac25edba89ba5806f55c

    • SSDEEP

      49152:/I4a/fuUWyY2dhl3pmcmVFSD2TDi+SyEU/6QB4:wx/GUxmVoJvyR/6R

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Detect Mystic stealer payload

    • Modifies Windows Defender Real-time Protection settings

    • Mystic

      Mystic is an infostealer written in C++.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks