Trojan-Downloader.Win32.Mufanom.aqda (Kaspersky), Gen:Variant.Hiloti.2 (B) (Emsisoft), Gen:Variant.Hiloti.2 (AdAware), Backdoor.Win32.PcClient.FD (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan, Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 625334336a3e76847cc128b36ce55ea3
SHA1: 20c1d36981ada39e0710a801aeb45b2143b943cd
SHA256: 45501b21d4e079d3a2e8488d0c5b306e3236815b7522884eb57a7fe09b42bfea
SSDeep: 1536:9P/SUYRI4Qd7MDXKpTLTaFVs/GoMcxQXoDd LG6:tU d78Xi3T0caoD96
Size: 61952 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualCv71EXE, UPolyXv05_v6
Company: no certificate found
Created at: 2010-03-11 18:04:05
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-Downloader. Trojan program, which downloads files from the Internet without user's notice and executes them.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan creates the following process(es):
%original file name%.exe:432
rundll32.exe:1196
The Trojan injects its code into the following process(es):
rundll32.exe:652
Explorer.EXE:532
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:432 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%WinDir%\TPavavan.dll (61 bytes)
Registry activity
The process %original file name%.exe:432 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "57 BC 06 28 6E DD 9D BD 1C 1B 93 39 CD B3 CA 03"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Wtube]
"Bveqayeweci" = "43 01 38 03 58 05 51 07 41 09 44 0B 48 0D 41 0F"
"Ydapup" = "44 01 47 03 33 05 3F 07 38 09 32 0B 49 0D 4C 0F"
The process rundll32.exe:652 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9D 0B BD 68 97 DE 6B 24 65 01 64 62 F7 3C 69 6C"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Wtube]
"Eqegaqojoqoka" = "154"
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Ihoragiqinicim" = "rundll32.exe %WinDir%\TPavavan.dll,Startup"
The process rundll32.exe:1196 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C2 46 A5 4F ED 96 5A 4F 95 64 BC 8D 84 87 7C 19"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Wtube]
"Bveqayeweci" = "43 01 38 03 58 05 51 07 41 09 44 0B 48 0D 41 0F"
Dropped PE files
MD5 | File path |
---|---|
f4dabd942d80f899523dab5e8cd09014 | c:\WINDOWS\TPavavan.dll |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
No anomalies have been detected.
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*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:432
rundll32.exe:1196 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%WinDir%\TPavavan.dll (61 bytes)
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Ihoragiqinicim" = "rundll32.exe %WinDir%\TPavavan.dll,Startup" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.
Static Analysis
VersionInfo
Company Name: Open Source Software community project
Product Name:
Product Version: 2, 1, 0, 0
Legal Copyright: Copyright (C) Project contributors 1998-2004
Legal Trademarks:
Original Filename: pthreadVC
Internal Name: pthreadVC
File Version: 2, 1, 0, 0
File Description:
Comments:
Language: Language Neutral
Company Name: Open Source Software community projectProduct Name: Product Version: 2, 1, 0, 0Legal Copyright: Copyright (C) Project contributors 1998-2004Legal Trademarks: Original Filename: pthreadVCInternal Name: pthreadVCFile Version: 2, 1, 0, 0File Description: Comments: Language: Language Neutral
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 49152 | 46080 | 5.01084 | 655081d1b20c94cc7e1b665b6126999e |
.data | 53248 | 12288 | 11264 | 3.92629 | 76ed43f39daf698eb20471c9f7de9ab4 |
.rsrc | 65536 | 4096 | 2048 | 1.44159 | 646d25b6cb337dc273113143e94883c2 |
.reloc | 69632 | 4096 | 1536 | 3.71805 | 84b330a79439c4c707d829461ef3329a |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
URL | IP |
---|---|
hxxp://102107de0805.gerborn.com/get2.php?c=HUXKCMMH&d=26606B67393436333A2F676268307D3F222022232225223177757E4469747A2219151A4210121F150E5C434F11696B1809010A767673050E090D0B0C7A040A7D76777A74727002027E700B790A6B2C263E273721696463637E383E36616C783013170711595048564E1D030807505E5F40414A45434647455E0908141F403B07F0EDEDF1E1F7A8C2D0CCACE7E8FFD1EAADA0B4F0F8FBE2C8FDA4AABDEBABAAA29087C49E9583D49A998FC9C5C8C193F7E08694F6FBE7 | 208.73.211.83 |
0000831609.948a4792.01.de7908ebf391417f94b668765de69a2f.n.empty.1042.empty.5_1._t_i.ffffffff.sandbox_svc_exe.154.rc2.a4h9uploading.com | 50.116.35.251 |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
rundll32.exe_652:
.text
.text
`.data
`.data
.rsrc
.rsrc
msvcrt.dll
msvcrt.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
GDI32.dll
GDI32.dll
USER32.dll
USER32.dll
IMAGEHLP.dll
IMAGEHLP.dll
rundll32.pdb
rundll32.pdb
.....eZXnnnnnnnnnnnn3
.....eZXnnnnnnnnnnnn3
....eDXnnnnnnnnnnnn3
....eDXnnnnnnnnnnnn3
...eDXnnnnnnnnnnnn,
...eDXnnnnnnnnnnnn,
.eDXnnnnnnnnnnnn,
.eDXnnnnnnnnnnnn,
%Xnnnnnnnnnnnnnnn1
%Xnnnnnnnnnnnnnnn1
O3$dS7"%U9
O3$dS7"%U9
.manifest
.manifest
5.1.2600.5512 (xpsp.080413-2105)
5.1.2600.5512 (xpsp.080413-2105)
RUNDLL.EXE
RUNDLL.EXE
Windows
Windows
Operating System
Operating System
5.1.2600.5512
5.1.2600.5512
YThere is not enough memory to run the file %s.
YThere is not enough memory to run the file %s.
Please close other windows and try again.
Please close other windows and try again.
9The file %s or one of its components could not be opened.
9The file %s or one of its components could not be opened.
0The file %s or one of its components cannot run.
0The file %s or one of its components cannot run.
MThe file %s or one of its components requires a different version of Windows.
MThe file %s or one of its components requires a different version of Windows.
UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"
UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"
Error in %s
Error in %s
Missing entry:%s
Missing entry:%s
Error loading %s
Error loading %s
rundll32.exe_652_rwx_00930000_00010000:
%SjOh
%SjOh
rundll32.exe_652_rwx_10000000_00001000:
.text
.text
`.data
`.data
.reloc
.reloc
Explorer.EXE_532_rwx_00ED0000_00001000:
.text
.text
`.data
`.data
.reloc
.reloc
Explorer.EXE_532_rwx_01FF0000_00010000:
%SjOh
%SjOh