General

  • Target

    scarey.exe

  • Size

    15.3MB

  • Sample

    250328-v5wrzsyzc1

  • MD5

    29805ee1be108e4c41b300c90f0c645c

  • SHA1

    8d369ce4e631d79a92a0774ccc8ca1083fce84e5

  • SHA256

    d924926446eff5ea2f185c29a92b2e1e62bdacd630dd33137e6e35df6fd4735e

  • SHA512

    5dc878ea99be940cfe1bc057def3a61e0486b26905fb9660d50d76144a48a5adb239e8b21fc937670be0e49f2353257ba08f485bb6c969d74a2b50b84a055d99

  • SSDEEP

    393216:HHW8Uwq3Obs2CltXMCHWUjZVg74w/ADF5ILf5kvsWP:nW8Uwq3ObRqtXMb8rDw/KLILf5kvLP

Malware Config

Targets

    • Target

      scarey.exe

    • Size

      15.3MB

    • MD5

      29805ee1be108e4c41b300c90f0c645c

    • SHA1

      8d369ce4e631d79a92a0774ccc8ca1083fce84e5

    • SHA256

      d924926446eff5ea2f185c29a92b2e1e62bdacd630dd33137e6e35df6fd4735e

    • SHA512

      5dc878ea99be940cfe1bc057def3a61e0486b26905fb9660d50d76144a48a5adb239e8b21fc937670be0e49f2353257ba08f485bb6c969d74a2b50b84a055d99

    • SSDEEP

      393216:HHW8Uwq3Obs2CltXMCHWUjZVg74w/ADF5ILf5kvsWP:nW8Uwq3ObRqtXMb8rDw/KLILf5kvLP

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (250) files with added filename extension

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

    • Disables Task Manager via registry modification

    • Downloads MZ/PE file

    • Credentials from Password Stores: Windows Credential Manager

      Suspicious access to Credentials History.

    • 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.

    • Checks installed software on the system

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

    • Checks whether UAC is enabled

    • Enumerates connected drives

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

    • Legitimate hosting services abused for malware hosting/C2

    • Remote Services: SMB/Windows Admin Shares

      Adversaries may use Valid Accounts to interact with a remote network share using Server Message Block (SMB).

    • 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

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks