Overview

overview

10

Static

static

StolenImag...e.xlsm

windows7_x64

10

StolenImag...e.xlsm

windows10_x64

10

Sharing

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General

  • Target
    StolenImagesEvidence.xlsm
  • Size 2.7MB
  • Sample200630-rdvmpwkhrx
  • SHA256 d3e6f290c2bb3453ca9c6eca018c3256d5a4e0e8bf3ab26316d904f3dfa82c23
  • MD5 SHA1 SHA512
Score
10/10
buerloaderpersistence

Malware Config

Targets

    • Target
      StolenImagesEvidence.xlsm
    • Size 2.7MB
    • SHA256 d3e6f290c2bb3453ca9c6eca018c3256d5a4e0e8bf3ab26316d904f3dfa82c23
    • MD5 SHA1 SHA512
    Score
    10/10
    buerloaderpersistence

    • Buer

      Buer is a new modular loader first seen in August 2019.

      loaderbuer

    • Modifies WinLogon for persistence

      persistence

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Enumerates connected drives

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

    behavioral1behavioral2

MITRE ATT&CK Enterprise v6

Tasks