TROJ_NEOJIT.SMX
TrojanDownloader:Win32/Neojit.A (Microsoft), Trojan-Downloader.Win32.Neojit (Ikarus)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
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.
It deletes the initially executed copy of itself.
TECHNICAL DETAILS
256,512 bytes
, EXE
No
24 Feb 2014
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.
Installation
This Trojan drops and executes the following files:
- %All Users Profile%\{random folder name}\{random file name}.exe - also detected as TROJ_NEOJIT.SMX
(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It creates the following folders:
- %All Users Profile%\{random folder name}
(Note: %All Users Profile% is the All Users folder, where it usually is C:\Documents and Settings\All Users on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\ProgramData on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
{random characters} = %All Users Profile%\{random folder name}\{random file name}.exe
Other System Modifications
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\SOFTWARE\08e646bd85cae68e96c119698aab08a2
It adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\SOFTWARE\08e646bd85cae68e96c119698aab08a2
c25659e1304291778a29fc7ea46e145a = "47,49,46,38,87,75,cc,90,4f,35,77,ab,b1,af,b2,5d,2c,bb,aa,f7,e2,65,b6,44,a7,31,b3,50,29,28,e7,bf,2e,f1,21,f5,5c,f6,1f,a8,1d,a7,57,bd,a5,c6,a6,85,73,02,20,37,69,12,ec,1a,d5,82,2f,c2,39,ae,20,4d,3a,33,04,04,cc,9e,29,4b,a8,c7,82,4b,36,c7,90,a6,17,c2,70,d1,39,13,98,2e,b3,87,9c,e7,b9,db,45,be,fb,43,9d,97,11,fb,18,3d,fc,91,62,6f,07,71,75,13,82,94,00,37,69,83,ed,e8,96,40,fa,70,5c,9b,c6,3c,8e,c5,41,87,7c,d9,8b,ab,19,d7,05,3b,c5,71,e1,e5,c7,e4,33,d6,69,12,3d,3d,00,e0,59,21,fe,7e,65,5c,09,e5,01,61,18,da,1d,0b,1d,81,c4,6f,30,92,54,c2,d2,72,56,a7,48,90,af,fb,13,d6,af,e4,8d,de,74,3c,cc,65,d1,e0,5f,fb,7a,7b,cc,04,e7,fe,80,26,d6,b5,d0,b4,f5,e1,eb,32,bb,2f,43,22,fa,02,6f,6e,75,e9,7a,a6,63,87,a9,3b,18,0b,cd,c6,37,9f,35,94,42,b5,76,82,01,96,89,62,fc,3d,c3,f3,bd,31,6e,fc,f7,98,09,a0,01,80,7c,09,7c,fb,c8,82,07,b9,b0,36,63,14,7c,d5,51,f6,7f,c3,6d,2b,f2,43,3c,12,8c,48,45,4c,11,c2,26,73,19,7a,89,5a,db,d6,82,99,f0,43,14,b6,67,51,56,95,29,62,0d,7a,23,d3,3f,e4,4f,ef,c5,2c,5e,04,92,61,d4,bb,e9,0e,c3,36,52,ef,15,5d,e1,bd,dd,d4,e3,23,5f,be,bb,"
Other Details
This Trojan connects to the following possibly malicious URL:
- http://c.{BLOCKED}g.com.br
- http://w.{BLOCKED}x.com
- http://db.{BLOCKED}ech.com
It deletes the initially executed copy of itself
SOLUTION
9.700
10.627.00
24 Feb 2014
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
Restart in Safe Mode
Step 4
Delete this registry value
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\Windows\CurrentVersion\Run
- {random characters} = "%All Users Profile%\{random folder name}\{random file name}.exe"
- {random characters} = "%All Users Profile%\{random folder name}\{random file name}.exe"
Step 5
Delete this registry key
=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.
- HKEY_CURRENT_USER\SOFTWARE\08e646bd85cae68e96c119698aab08a2
Step 6
Search and delete these folders
- %All Users Profile%\{random folder name}
Step 7
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_NEOJIT.SMX. 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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