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WORM_ZOMBAQUE.AA

March 25, 2013
 Analysis by: Jaime Benigno Reyes
 ALIASES:

Worm:Win32/Zombaque.A (Microsoft), Trojan.Win32.Genome.acbxn (Kaspersky), W32.Spybot.Worm (Symantec), BackDoor-AWQ.b (McAfee)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Worm

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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

It opens certain ports to access shared networks.

  TECHNICAL DETAILS

File Size:

318,464 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

14 Sep 2012

Arrival Details

This worm may arrive via network shares.

It 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 worm drops the following files:

  • {malware location}\ipz-db.bin

Other System Modifications

This worm adds the following registry keys:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\IPZ

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Enum\Root\LEGACY_IPZ

Propagation

This worm opens the following ports to access shared networks:

  • 4899