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RANSOM_HAKUNA.A

January 27, 2017
 Analysis by: RonJay Kristoffer Caragay
 ALIASES:

Ransom:Win32/FileCryptor (Microsoft); Trojan.Win32.Deshacop.ddy (Kaspersky); Trojan.Win32.Filecoder (Ikarus)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

It deletes itself after execution.

  TECHNICAL DETAILS

File Size:

1,748,992 bytes

File Type:

EXE

Initial Samples Received Date:

16 Jan 2017

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other System Modifications

This Trojan adds the following registry entries:

HKEY_CLASSES_ROOT\.HakunaMatata
(Default) = "Crypted!"

HKEY_CLASSES_ROOT\.HakunaMatata\DefaultIcon
(Default) = "%System%\shell32.dll,47"

HKEY_CLASSES_ROOT\.HakunaMatata\shell\
open\command
(Default) = "cmd /s/c\"(ECHO {random note})|MSG *\""

Dropping Routine

This Trojan drops the following files:

  • {folders containing encrypted files}\Recovers files yako.html

Other Details

This Trojan renames encrypted files using the following names:

  • {original path and filename}.HakunaMatata

It deletes itself after execution.