BKDR_INJECT.CHY

November 19, 2012
 Modified by: Nikko Tamana
 ALIASES:

Backdoor.Win32.Inject (Ikarus), Backdoor:Win32/Zegost.AD (Microsoft), a variant of Win32/Farfli.PZ trojan (NOD32)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

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

  • Threat Type: Backdoor

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

This backdoor 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:

47,616 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

13 Nov 2012

Arrival Details

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

Other Details

This backdoor connects to the following possibly malicious URL:

  • http://{BLOCKED}n.{BLOCKED}s.tv/web/banner.dat
  • http://{BLOCKED}t.{BLOCKED}s.org/web/banner.dat
  • http://{BLOCKED}t.{BLOCKED}s.org/web/banner.dat
  • http://{BLOCKED}0.{BLOCKED}7.235.238/web/GStatus.asp?id=code&ver=TXXrAC1AXEpNUFJKTU5X
  • http://{BLOCKED}e.{BLOCKED}ft.com/web/GStatus.asp?id=ProxyFlag&ver=TXXrAC1AXEpNUFJKTU5X
  • http://{BLOCKED}x.{BLOCKED}oft.com/objects/ocget.dll

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

9.524.06

FIRST VSAPI PATTERN DATE:

13 Nov 2012

VSAPI OPR PATTERN File:

9.525.00

VSAPI OPR PATTERN Date:

14 Nov 2012

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

Scan your computer with your Trend Micro product to delete files detected as BKDR_INJECT.CHY. 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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