General

  • Target

    DAU7WuTeQv0

  • Size

    556KB

  • Sample

    240915-lewjvswgkh

  • MD5

    f47e21a0299dabb78628cf46c0da933a

  • SHA1

    14db13fe94f516ee3564eae9c14ea5cbeb3fd3dc

  • SHA256

    1237150b71ef2f5791c6aeb162c3e3c7d4b41ccbc7b208053bc6419b83ceb0a5

  • SHA512

    46f1da929ec03dbc173bd69642fa085f9f396726be77ef3e3f985c31e4238a8769ad66c077552bec0d2dc07e2178930b7acdb7f5a72d55d3f7562120649f7d92

  • SSDEEP

    6144:dgKGyVGyRGywGyfGyWGyyGySGylGyLGyXP+nw:dVGcG2GnGeGpGhGvGQGcGOPn

Malware Config

Targets

    • Target

      DAU7WuTeQv0

    • Size

      556KB

    • MD5

      f47e21a0299dabb78628cf46c0da933a

    • SHA1

      14db13fe94f516ee3564eae9c14ea5cbeb3fd3dc

    • SHA256

      1237150b71ef2f5791c6aeb162c3e3c7d4b41ccbc7b208053bc6419b83ceb0a5

    • SHA512

      46f1da929ec03dbc173bd69642fa085f9f396726be77ef3e3f985c31e4238a8769ad66c077552bec0d2dc07e2178930b7acdb7f5a72d55d3f7562120649f7d92

    • SSDEEP

      6144:dgKGyVGyRGywGyfGyWGyyGySGylGyLGyXP+nw:dVGcG2GnGeGpGhGvGQGcGOPn

    • CryptoLocker

      Ransomware family with multiple variants.

    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Credentials from Password Stores: Credentials from Web Browsers

      Malicious Access or copy of Web Browser Credential store.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (565) files with added filename extension

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

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    • Downloads MZ/PE file

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops desktop.ini file(s)

    • Legitimate hosting services abused for malware hosting/C2

    • Writes to the Master Boot Record (MBR)

      Bootkits write to the MBR to gain persistence at a level below the operating system.

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks