Extracted

• • Target

    Trojan-Ransom.Win32.Zerber.gdcx-4a8031fc97753e95eb440a1f0f100ddcfbca0bca0bb2271dbc775e129282f304.exe

  • Size

    148KB

  • MD5

    3ce563e899291b59fa8c57c98cad9b4e

  • SHA1

    7157cc9cf910735727b6601ad4d532cdd0fedc7e

  • SHA256

    4a8031fc97753e95eb440a1f0f100ddcfbca0bca0bb2271dbc775e129282f304

  • SHA512

    827dc0e9f9212ec0d4c1e8c7180c33d387548f7de6d0b45a2eef01f22f69ee571d3f2f8b610b8f671f4b25abaa578431ce758a5e41740e7b8c63ca85ef953469

  • SSDEEP

    3072:/UuL1hDewdkuaLYO/IBK2btFVL1xTevRUyZDDdnN5:/Ue1hyioVgBhnNPK5FZD5n

  Score

  10^/10

  badrabbitcerbermimikatztroldeshwannacrybootkitdiscoveryevasionpersistenceransomwaretrojanupxworm

  • BadRabbit

    Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    ransomwarebadrabbit

  • Cerber

    Cerber is a widely used ransomware-as-a-service (RaaS), first seen in 2017.

    ransomwarecerber

  • Mimikatz

    mimikatz is an open source tool to dump credentials on Windows.

    mimikatz

  • Modifies WinLogon for persistence

    persistence

  • Troldesh, Shade, Encoder.858

    Troldesh is a ransomware spread by malspam.

    ransomwaretrojantroldesh

  • Wannacry

    WannaCry is a ransomware cryptoworm.

    ransomwarewormwannacry

  • mimikatz is an open source tool to dump credentials on Windows

  • Contacts a large (1116) amount of remote hosts

    This may indicate a network scan to discover remotely running services.

    discovery

  • Disables RegEdit via registry modification

    evasion

  • Disables Task Manager via registry modification

    evasion

  • Executes dropped EXE

  • Modifies Windows Firewall

    evasion

  • Modifies extensions of user files

    Ransomware generally changes the extension on encrypted files.

    ransomware

  • UPX packed file

    Detects executables packed with UPX/modified UPX open source packer.

    upx

  • Checks computer location settings

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

  • Drops startup file

  • Loads dropped DLL

  • Modifies file permissions

    discovery

  • Adds Run key to start application

    persistence

  • 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

  • Modifies WinLogon

    persistence

  • Writes to the Master Boot Record (MBR)

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

    bootkitpersistence
  behavioral1behavioral2