RANSOM_GANDCRAB.TIAOBHG
TrojanRansom.GandCrypt (VBA32), Mal/GandCrab-B (Sophos_lite)
Windows
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Threat Type: Ransomware
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
3,120,128 bytes
EXE
Yes
13 Jun 2018
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_CURRENT_USER\Software\Microsoft\
TestApp
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
Name = {random}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
Defender = {string}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
Servers = https://{BLOCKED}rgnew.com , https://{BLOCKED}dcoolest.com , https://{BLOCKED}4500.com
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
UUID = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
Command = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
FirstInstallDate = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
CloudnetSource = {string}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
ServiceVersion = {string}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
SC = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
PGDSE = {value]
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
VC = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
OSCaption = {Operating System of affected machine}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
OSArchitecture = {32 or 64}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
IsAdmin = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
AV = {strings}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
PatchTime = {value}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
CPU = {CPU details of affected machine}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
GPU = {GPU details of affected machine}
HKEY_CURRENT_USER\Software\Microsoft\
TestApp
Firewall = {string}
SOLUTION
9.850
14.322.03
18 Jun 2018
14.323.00
19 Jun 2018
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Identify and terminate files detected as RANSOM_GANDCRAB.TIAOBHG
- 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 4
Delete this registry key
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
- TestApp
- TestApp
Step 5
Scan your computer with your Trend Micro product to delete files detected as RANSOM_GANDCRAB.TIAOBHG. 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:
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