TROJ_HIOLES.RR

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.

File Size: 208,896 bytes

File Type: EXE

Memory Resident: No

Initial Samples Received Date: 25 Jan 2013

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 keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UacDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
AntiVirusOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
AntiVirusDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
FirewallDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
FirewallOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
UpdatesDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center\Svc
UacDisableNotify = "1"

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
GlobalUserOffline = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\policies\
system
EnableLUA = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
{malware path and file name} = "{malware path and file name}:*:enabled:ipsec"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
EnableFirewall = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DoNotAllowExceptions = "0"

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile
DisableNotifications = "1"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
1651272023 = "b3"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
-992423250 = "0"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
658848773 = "0"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
-1984846500 = "23"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
-333574477 = "14f"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
1317697546 = "{random characters}"

HKEY_CURRENT_USER\Software\Afqteuv\
1926745233
-1325997727 = "{random characters}"

HKEY_CURRENT_USER\Software\Afqteuv
W1_0 = "f323654f"

HKEY_CURRENT_USER\Software\Afqteuv
W2_0 = "1f9c"

HKEY_CURRENT_USER\Software\Afqteuv
W3_0 = "136a29"

HKEY_CURRENT_USER\Software\Afqteuv
W4_0 = "0"

HKEY_CURRENT_USER\Software\Afqteuv
W1_1 = "67ba98eb"

HKEY_CURRENT_USER\Software\Afqteuv
W2_1 = "626c49"

HKEY_CURRENT_USER\Software\Afqteuv
W3_1 = "636f37e"

HKEY_CURRENT_USER\Software\Afqteuv
W4_1 = "626c6957"

HKEY_CURRENT_USER\Software\Afqteuv
W1_2 = "51d6512"

HKEY_CURRENT_USER\Software\Afqteuv
W2_2 = "c4d8c8d9"

HKEY_CURRENT_USER\Software\Afqteuv
W3_2 = "c5dbb887"

It modifies the following registry entries:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\SecurityProviders
SecurityProviders = "msapsspc.dll, schannel.dll, digest.dll, msnsspc.dll, AgkoflucVutd.dll"

(Note: The default value data of the said registry entry is msapsspc.dll, schannel.dll, digest.dll, msnsspc.dll.)

HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
Hidden = "2"

(Note: The default value data of the said registry entry is 2.)

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
AntiVirusDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallDisableNotify = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
FirewallOverride = "1"

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Security Center
UpdatesDisableNotify = "1"

It deletes the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Control\SafeBoot\Minimal\
AppMgmt

Dropping Routine

This Trojan drops the following files:

%System%\AgkoflucVutd.dll

(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)

This report is generated via an automated analysis system.

Minimum Scan Engine: 9.300

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

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\Microsoft\Security Center
- Svc

In HKEY_CURRENT_USER\Software\Afqteuv
- 1926745233

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\Microsoft\Security Center
- UacDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- AntiVirusOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- AntiVirusDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- FirewallDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- FirewallOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- UpdatesDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center\Svc
- UacDisableNotify = "1"

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- GlobalUserOffline = "0"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\system
- EnableLUA = "0"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- {malware path and file name} = "{malware path and file name}:*:enabled:ipsec"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- EnableFirewall = "0"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DoNotAllowExceptions = "0"

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile
- DisableNotifications = "1"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- 1651272023 = "b3"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- -992423250 = "0"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- 658848773 = "0"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- -1984846500 = "23"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- -333574477 = "14f"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- 1317697546 = "{random characters}"

In HKEY_CURRENT_USER\Software\Afqteuv\1926745233
- -1325997727 = "{random characters}"

In HKEY_CURRENT_USER\Software\Afqteuv
- W1_0 = "f323654f"

In HKEY_CURRENT_USER\Software\Afqteuv
- W2_0 = "1f9c"

In HKEY_CURRENT_USER\Software\Afqteuv
- W3_0 = "136a29"

In HKEY_CURRENT_USER\Software\Afqteuv
- W4_0 = "0"

In HKEY_CURRENT_USER\Software\Afqteuv
- W1_1 = "67ba98eb"

In HKEY_CURRENT_USER\Software\Afqteuv
- W2_1 = "626c49"

In HKEY_CURRENT_USER\Software\Afqteuv
- W3_1 = "636f37e"

In HKEY_CURRENT_USER\Software\Afqteuv
- W4_1 = "626c6957"

In HKEY_CURRENT_USER\Software\Afqteuv
- W1_2 = "51d6512"

In HKEY_CURRENT_USER\Software\Afqteuv
- W2_2 = "c4d8c8d9"

In HKEY_CURRENT_USER\Software\Afqteuv
- W3_2 = "c5dbb887"

To delete the registry value this malware/grayware created:

Open Registry Editor. Click Start>Run, type REGEDIT, then press Enter.
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Security Center
In the right panel, locate and delete the entry:
UacDisableNotify = "1"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Security Center>Svc
In the right panel, locate and delete the entry:
AntiVirusOverride = "1"
Again In the right panel, locate and delete the entry:
AntiVirusDisableNotify = "1"
Again In the right panel, locate and delete the entry:
FirewallDisableNotify = "1"
Again In the right panel, locate and delete the entry:
FirewallOverride = "1"
Again In the right panel, locate and delete the entry:
UpdatesDisableNotify = "1"
Again In the right panel, locate and delete the entry:
UacDisableNotify = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Microsoft>Windows>CurrentVersion>Internet Settings
In the right panel, locate and delete the entry:
GlobalUserOffline = "0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SOFTWARE>Microsoft>Windows>CurrentVersion>policies>system
In the right panel, locate and delete the entry:
EnableLUA = "0"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile>AuthorizedApplications>List
In the right panel, locate and delete the entry:
{malware path and file name} = "{malware path and file name}:*:enabled:ipsec"
In the left panel, double-click the following:
HKEY_LOCAL_MACHINE>SYSTEM>ControlSet001>Services>SharedAccess>Parameters>FirewallPolicy>StandardProfile
In the right panel, locate and delete the entry:
EnableFirewall = "0"
Again In the right panel, locate and delete the entry:
DoNotAllowExceptions = "0"
Again In the right panel, locate and delete the entry:
DisableNotifications = "1"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Afqteuv>1926745233
In the right panel, locate and delete the entry:
1651272023 = "b3"
Again In the right panel, locate and delete the entry:
-992423250 = "0"
Again In the right panel, locate and delete the entry:
658848773 = "0"
Again In the right panel, locate and delete the entry:
-1984846500 = "23"
Again In the right panel, locate and delete the entry:
-333574477 = "14f"
Again In the right panel, locate and delete the entry:
1317697546 = "{random characters}"
Again In the right panel, locate and delete the entry:
-1325997727 = "{random characters}"
In the left panel, double-click the following:
HKEY_CURRENT_USER>Software>Afqteuv
In the right panel, locate and delete the entry:
W1_0 = "f323654f"
Again In the right panel, locate and delete the entry:
W2_0 = "1f9c"
Again In the right panel, locate and delete the entry:
W3_0 = "136a29"
Again In the right panel, locate and delete the entry:
W4_0 = "0"
Again In the right panel, locate and delete the entry:
W1_1 = "67ba98eb"
Again In the right panel, locate and delete the entry:
W2_1 = "626c49"
Again In the right panel, locate and delete the entry:
W3_1 = "636f37e"
Again In the right panel, locate and delete the entry:
W4_1 = "626c6957"
Again In the right panel, locate and delete the entry:
W1_2 = "51d6512"
Again In the right panel, locate and delete the entry:
W2_2 = "c4d8c8d9"
Again In the right panel, locate and delete the entry:
W3_2 = "c5dbb887"
Close Registry Editor.

Step 4

Restore these modified registry values

[ Learn More ]

Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SecurityProviders
- From: SecurityProviders = "msapsspc.dll, schannel.dll, digest.dll, msnsspc.dll, AgkoflucVutd.dll"
  To: SecurityProviders = ""msapsspc.dll, schannel.dll, digest.dll, msnsspc.dll""

In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- From: Hidden = "2"
  To: Hidden = ""2""

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- AntiVirusOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- AntiVirusDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- FirewallDisableNotify = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- FirewallOverride = "1"

In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Security Center
- UpdatesDisableNotify = "1"

Step 5

Search and delete this file

[ Learn More ]

There may be some files that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.

%System%\AgkoflucVutd.dll

Step 6

Scan your computer with your Trend Micro product to delete files detected as TROJ_HIOLES.RR. 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 7

Restore these deleted registry keys/values from backup

*Note: Only Microsoft-related keys/values will be restored. If the malware/grayware also deleted registry keys/values related to programs that are not from Microsoft, please reinstall those programs on your computer.

In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\SafeBoot\Minimal
- AppMgmt

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