General

  • Target

    dc4961228ae1158818c242e7e9d5e90e4412996dda31d132f96f010b0be4594b

  • Size

    2.0MB

  • Sample

    221123-s6qw1sgc2s

  • MD5

    225a276aa4260b794e111fb89aaa484d

  • SHA1

    67c88b2d40d78c8e60e2d898db0676da9d8a829f

  • SHA256

    dc4961228ae1158818c242e7e9d5e90e4412996dda31d132f96f010b0be4594b

  • SHA512

    f8efc5f8b278f38a3e2b134e06372282b6457d661b446837fb34849530ed452fd1a492b2b03c475ab6051abcf702dfb8fbad95e527dcaf749fa4c956ea4a1dfd

  • SSDEEP

    49152:WrwMVlyQxvf7kly1IGy3nxf5mlr7IjZ/JEdZ/ZvR0O84yVuGBB:gfyQxvYsWunvnAuGBB

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

173.254.223.124 :2556

Mutex

DC_MUTEX-4RW38P4

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    GRBqclq1WLRg

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • reg_key

    MicroUpdate

Targets

    • Target

      PO#234323.exe

    • Size

      2.1MB

    • MD5

      23985d8d800a7b82901526105f9c69bc

    • SHA1

      41fb548fddd05c635321c380bf4440688477f9eb

    • SHA256

      6a670d879fe45e275fcead9a363535b899873835231cfbb051c55671b9f9753a

    • SHA512

      49df2f83485f0d15c8717b804d19e5fd79e2f76f02e0ea7c839d4363b89de9eb9968392b3459dd1c17409291d69fe91d5426ab74b0fd71155684e2315823d165

    • SSDEEP

      49152:taxIVry0xxf/AlgRKGY3ZXfxwlPs7IJVDVmLRzZj90w84aLuGv:ta2Fy0xxQI3oXjvouGv

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • ISR Stealer

      ISR Stealer is a modified version of Hackhound Stealer written in visual basic.

    • ISR Stealer payload

    • Modifies WinLogon for persistence

    • Windows security bypass

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Windows security modification

    • Adds Run key to start application

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v6

Tasks