ALIASES:

Worm:Win32/Dorkbot.A (Microsoft); PWS-Zbot.gen.nz (McAfee); Trojan.Usuge!gen3 (Symantec); Worm.Win32.VB.dro (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Trojan.Agent.ATUZ (FSecure)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Spyware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This spyware 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: 151,552 bytes
File Type: EXE
Memory Resident: No
Initial Samples Received Date: 22 May 2012

Arrival Details

This spyware 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 spyware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\
protected\AVP11\settings

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\
protected\AVP12\settings

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Update\Settings

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Antivirus

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKProxy

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVStatus

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKWaechter

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile
SampleEnable = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile
StatisticsEnabled = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile
QuarantineUpdateScan = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile
CloudEnabled = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\ESET\
ESET Security\CurrentVersion\Plugins\
01000600\Profiles\@My profile
CloudFlags = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\
protected\AVP11\settings
UseKSN = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\
protected\AVP12\settings
UseKSN = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Update\Settings
AutomaticUpdates = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Antivirus
EnableFalsePositiveSendToVirusLab = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Antivirus
OnAccessEnabled = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\
BullGuard\Antivirus
BehaviourEnabled = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKProxy
AntiSpy = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVStatus
OnAccessEnabled = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKProxy
ReportInfections = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKProxy
HttpPhishingState = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKProxy
ProcessHTTP = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKWaechter
AccessDenyInfected = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKWaechter
Heuristic = "0"

HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\
AVKWaechter
ProcessIM_AIM = "0"

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine: 9.200

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

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\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles
    • @My profile
  • In HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\protected\AVP11
    • settings
  • In HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\protected\AVP12
    • settings
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard\Update
    • Settings
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard
    • Antivirus
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA
    • AVKProxy
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA
    • AVStatus
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA
    • AVKWaechter

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\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles\@My profile
    • SampleEnable = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles\@My profile
    • StatisticsEnabled = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles\@My profile
    • QuarantineUpdateScan = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles\@My profile
    • CloudEnabled = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\ESET\ESET Security\CurrentVersion\Plugins\01000600\Profiles\@My profile
    • CloudFlags = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\protected\AVP11\settings
    • UseKSN = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\KasperskyLab\protected\AVP12\settings
    • UseKSN = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard\Update\Settings
    • AutomaticUpdates = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard\Antivirus
    • EnableFalsePositiveSendToVirusLab = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard\Antivirus
    • OnAccessEnabled = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\BullGuard Ltd.\BullGuard\Antivirus
    • BehaviourEnabled = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKProxy
    • AntiSpy = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVStatus
    • OnAccessEnabled = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKProxy
    • ReportInfections = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKProxy
    • HttpPhishingState = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKProxy
    • ProcessHTTP = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKWaechter
    • AccessDenyInfected = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKWaechter
    • Heuristic = "0"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\G DATA\AVKWaechter
    • ProcessIM_AIM = "0"

Step 4

Scan your computer with your Trend Micro product to delete files detected as TSPY_AGENT.BBBZ. 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.


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