General

  • Target

    2024-04-12_df1ce61fb4869963a1e95a917adef9d0_wannacry

  • Size

    111KB

  • Sample

    240412-xcvekaga3s

  • MD5

    df1ce61fb4869963a1e95a917adef9d0

  • SHA1

    bcf132651a5bd948e758441e4733519d1502c8bf

  • SHA256

    e58bf0a81866c21e25dbe8f85fd74304259be3e1b53019f857c2354e23f71b1e

  • SHA512

    d2867e1b00900098674f1a87653a9f016911649162c66f0eab67336f758a6611a497bc21a6cbe336bbc2464212bfec59e991b99aa92777ad2250e72b4e17888b

  • SSDEEP

    3072:CB7q9NKEXUrQlGRSAMHsEwGYMl9AYGywOjvOjJ:CB7q9CQ8hMs7GpKPOaj

Malware Config

Targets

    • Target

      2024-04-12_df1ce61fb4869963a1e95a917adef9d0_wannacry

    • Size

      111KB

    • MD5

      df1ce61fb4869963a1e95a917adef9d0

    • SHA1

      bcf132651a5bd948e758441e4733519d1502c8bf

    • SHA256

      e58bf0a81866c21e25dbe8f85fd74304259be3e1b53019f857c2354e23f71b1e

    • SHA512

      d2867e1b00900098674f1a87653a9f016911649162c66f0eab67336f758a6611a497bc21a6cbe336bbc2464212bfec59e991b99aa92777ad2250e72b4e17888b

    • SSDEEP

      3072:CB7q9NKEXUrQlGRSAMHsEwGYMl9AYGywOjvOjJ:CB7q9CQ8hMs7GpKPOaj

    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Detects command variations typically used by ransomware

    • Detects executables containing many references to VEEAM. Observed in ransomware

    • Modifies boot configuration data using bcdedit

    • Renames multiple (166) files with added filename extension

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

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Disables Task Manager via registry modification

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • 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

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks