ALIASES:

Ransom:Win32/Shade.PA!MTB (Microsoft); Trojan-FRKJ!81947164B878 (McAfee); Trojan.Win32.Zenpak.nsw (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Ransomware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

  TECHNICAL DETAILS

File Size: 416,256 bytes
File Type: EXE
Memory Resident: Yes
Initial Samples Received Date: 14 Nov 2019

Arrival Details

This Ransomware 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 Ransomware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\GitForWindows

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
73g = "\x9c\xe3\x12\xfa\xf0\x17\xeb\xbd\x1a;;\xcd\xdbi\x00\xcd\x03\xfdEa\x96\x831\xf3\xf2\xb7{R&B"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
vTGj = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
Q7PZe = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
BuCrIp = "{random characters}"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
lcZd7OY = ".zne4j6"

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\
GitForWindows
sLF86MWC = "{random characters}"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Delete this registry key

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE
    • GitForWindows

Step 3

Delete this registry value

[ Learn More ]

Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.

  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • 73g = "\x9c\xe3\x12\xfa\xf0\x17\xeb\xbd\x1a;;\xcd\xdbi\x00\xcd\x03\xfdEa\x96\x831\xf3\xf2\xb7{R&B"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • vTGj = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • Q7PZe = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • BuCrIp = "{random characters}"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • lcZd7OY = ".zne4j6"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\GitForWindows
    • sLF86MWC = "{random characters}"

Step 4

Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.SHADE.THJBEAI. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:

Step 5

Restore encrypted files from backup.


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