Overview

overview

10

Static

static

10

58bfb9fa88...1f.exe

windows7-x64

58bfb9fa88...1f.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f

  • Size

    82KB

  • Sample

    231215-ae8nmsafd5

  • MD5

    e01e11dca5e8b08fc8231b1cb6e2048c

  • SHA1

    4983d07f004436caa3f10b38adacbba6a4ede01a

  • SHA256

    58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f

  • SHA512

    298bfb9fe55ddd80f1c6671622d7e9e865899a855b5bb8e0d85d8520160cedca6fd8bc72c9881925477bcab883bf6e6f4c69f997b774b74fe992e023a81269de

  • SSDEEP

    1536:PcW4lAJGGnzjoih/NDh/NDuk+XkGAK/hztXcag+PlbBfkWIyvZrw281r5XsmCZEe:UWNGszjoih/NDh/NDuk+XkGAK/hztXcQ

Score
10/10
thanosevasionpersistenceransomwaretrojan

Malware Config

Targets

    • Target

      58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f

    • Size

      82KB

    • MD5

      e01e11dca5e8b08fc8231b1cb6e2048c

    • SHA1

      4983d07f004436caa3f10b38adacbba6a4ede01a

    • SHA256

      58bfb9fa8889550d13f42473956dc2a7ec4f3abb18fd3faeaa38089d513c171f

    • SHA512

      298bfb9fe55ddd80f1c6671622d7e9e865899a855b5bb8e0d85d8520160cedca6fd8bc72c9881925477bcab883bf6e6f4c69f997b774b74fe992e023a81269de

    • SSDEEP

      1536:PcW4lAJGGnzjoih/NDh/NDuk+XkGAK/hztXcag+PlbBfkWIyvZrw281r5XsmCZEe:UWNGszjoih/NDh/NDuk+XkGAK/hztXcQ

    Score
    10/10
    evasionpersistenceransomwaretrojan

    • Contains code to disable Windows Defender

      A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.

    • Modifies Windows Defender Real-time Protection settings

      evasiontrojan

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Renames multiple (59) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

      ransomware

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Windows security modification

      evasiontrojan

    • Legitimate hosting services abused for malware hosting/C2

    • Modifies WinLogon

      persistence
    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks