Overview

overview

10

Static

static

3

zinst86235862001.exe

windows10-2004-x64

10

zinst86235862001.exe

windows11-21h2-x64

1

Sharing

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General

  • Target
    zinst86235862001.exe
  • Size 71.8MB
  • Sample260605-1k6pcad161
  • SHA256 8ba88a141222949ba584059305164640eb7b4858bb70088200af58251605bbbf
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
plusdropapt41aptbackdoordefense_evasiondiscoveryexecutionpersistence

Malware Config

Targets

    • Target
      zinst86235862001.exe
    • Size 71.8MB
    • SHA256 8ba88a141222949ba584059305164640eb7b4858bb70088200af58251605bbbf
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    apt41aptbackdoordefense_evasiondiscoveryexecutionplusdroppersistence

    • Detects Plusdrop Payload

      backdooraptapt41

    • Family: Plusdrop, toughprogress

      Plusdrop is a backdoor used by APT41 in Toughprogress campaign that abuses Google Calendar events as its C2.

      backdoorplusdrop

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Modifies file permissions

      discovery

    • Adds Run key to start application

      persistence

    • Indicator Removal: Clear Persistence

      Clear artifacts associated with previously established persistence like scheduletasks on a host.

      defense_evasion

    • Drops file in System32 directory

    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks