Ransom.Win32.HAPERLOCK.SMI
Ransom:Win32/Haperlock.A (Microsoft); Trojan-FMYW!5C246D7B4AFB (McAfee); Trojan-Dropper.Win32.Sysn.cdqh (Kaspersky); Troj/AutoG-BL (Sophos); Trojan.Win32.Generic.pak!cobra (Sunbelt)
Windows
Threat Type: Ransomware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
It connects to certain websites to send and receive information. However, as of this writing, the said sites are inaccessible. It deletes itself after execution.
TECHNICAL DETAILS
605,820 bytes
EXE
Yes
20 Sep 2019
Connects to URLs/IPs, Drops files
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.
Installation
This Ransomware drops the following copies of itself into the affected system and executes them:
- %User Temp%\{random characters}.exe
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following processes:
- %User Temp%\{random characters}.exe :*{Malware Name} *
- a ZZZZZZXZYTG
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- Global\giojheiowrghtiovhjwiojrugzyb
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
System Health Monitoring Service Pro = "%User Temp%\{random characters}.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
*System Health Monitoring Service Pro = "%User Temp%\{random characters}.exe"
Dropping Routine
This Ransomware drops the following files:
- %User Temp%\dlog.log
- %User Temp%\dlogn.log
- %User Temp%\dlogw.log
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Other Details
This Ransomware connects to the following URL(s) to check for an Internet connection:
- http://microsoft.com
It connects to the following website to send and receive information:
- http://youhappenes.{BLOCKED}t.org
- http://readion.{BLOCKED}ne.com
However, as of this writing, the said sites are inaccessible.
It deletes itself after execution.
It accepts the following parameters:
- ANOTHERDAY
- nocrypt
SOLUTION
9.850
15.310.08
20 Aug 2019
15.311.00
21 Aug 2019
Step 1
Trend Micro products with the XGen technology detect this malware as
- Troj.Win32.TRX.XXPE50FFF03
Step 2
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 3
Restart in Safe Mode
Step 4
Identify and terminate files detected as Ransom.Win32.HAPERLOCK.SMI
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 5
Delete this registry value
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- System Health Monitoring Service Pro = %User Temp%\{random characters}.exe
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
- *System Health Monitoring Service Pro = %User Temp%\{random characters}.exe
Step 6
Search and delete these files
- %User Temp%\dlog.log
- %User Temp%\dlogn.log
- %User Temp%\dlogw.log
- %User Temp%\{random characters}.exe
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Ransom.Win32.HAPERLOCK.SMI. 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 this Knowledge Base page for more information.
Step 8
Scan your computer with your Trend Micro product to delete files detected as Ransom.Win32.HAPERLOCK.SMI. 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 9
Restore encrypted files from backup.
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