Trojan.Win32.MicroFake.rz (Kaspersky), Trojan.Win32.Nitol.b (v) (VIPRE), Trojan.Win32.Nitol!IK (Emsisoft), DDoSNitol.YR (Lavasoft MAS)Behaviour: Trojan
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: b4d0188120077315f02173a7d3dbc379
SHA1: 2699969c24e56d7de4cc4fe913a3edd39d2d586a
SHA256: 4bd0a3a005a868d2f3989da4a40955f603b084527936c90c8c65f148b4f1bc01
SSDeep: 3072:7GswnzyfwsCVqVXyHGG8HcOclpEZjgX8cRSv:6yfwsCVqVXyHWklMgXbRSv
Size: 120320 bytes
File type: DLL
Platform: WIN32
Entropy: Not Packed
PEID: BorlandDelphi30, UPolyXv05_v6
Company: no certificate found
Created at: 2010-09-14 11:27:39
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan creates the following process(es):
regsvr32.exe:1696
hrl1.tmp:1348
The Trojan injects its code into the following process(es):
aakqaw.exe:1808
File activity
The process regsvr32.exe:1696 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\hrl1.tmp (108 bytes)
The process aakqaw.exe:1808 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
C:\RCX2.tmp (8759 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\lpk.dll (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\lpk.dll (601 bytes)
%Documents and Settings%\All Users\Application Data\Adobe\Reader\9.3\ARM\lpk.dll (601 bytes)
%System%\hra33.dll (12 bytes)
The Trojan deletes the following file(s):
%System%\hra33.dll (0 bytes)
The process hrl1.tmp:1348 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%System%\aakqaw.exe (601 bytes)
%System%\taskkill.exe (1556 bytes)
Registry activity
The process regsvr32.exe:1696 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F1 99 3D 63 78 3F 61 47 18 DC 1F A4 74 6C BA 4B"
Network activity (URLs)
URL | IP |
---|---|
jxaode.com | 210.209.80.222 |
hsfloy.com | Unresolvable |
mmnopo.com | Unresolvable |
HOSTS file anomalies
The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 734 bytes in size. The following strings are added to the hosts file listed below:
127.0.0.1 | www.Brenz.pl |
Rootkit activity
The Trojan installs the following user-mode hooks in ntdll.dll:
NtQueryInformationProcess
ZwOpenFile
NtDeviceIoControlFile
NtCreateProcessEx
NtCreateProcess
NtCreateFile
Propagation
Removals
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Scan a system with an anti-rootkit tool.
- Terminate malicious process(es) (How to End a Process With the Task Manager):
regsvr32.exe:1696
hrl1.tmp:1348 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\hrl1.tmp (108 bytes)
C:\RCX2.tmp (8759 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\lpk.dll (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\lpk.dll (601 bytes)
%Documents and Settings%\All Users\Application Data\Adobe\Reader\9.3\ARM\lpk.dll (601 bytes)
%System%\hra33.dll (12 bytes)
%System%\aakqaw.exe (601 bytes)
%System%\taskkill.exe (1556 bytes) - Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
- Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.