by malwarelabrobot on August 28th, 2014 in Malware Descriptions.

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.

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Dynamic Analysis
Static Analysis
Network Activity
Strings from Dumps

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


Trojan-Downloader. Trojan program, which downloads files from the Internet without user's notice and executes them.


No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:432

The Trojan injects its code into the following process(es):



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:

"Seed" = "57 BC 06 28 6E DD 9D BD 1C 1B 93 39 CD B3 CA 03"

"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:

"Seed" = "9D 0B BD 68 97 DE 6B 24 65 01 64 62 F7 3C 69 6C"

"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:

"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:

"Seed" = "C2 46 A5 4F ED 96 5A 4F 95 64 BC 8D 84 87 7C 19"

"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.



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:
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:



IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET TROJAN Hiloti/Mufanom Downloader Checkin
ET TROJAN Hiloti Style GET to PHP with invalid terse MSIE headers


The Trojan connects to the servers at the folowing location(s):


5.1.2600.5512 (xpsp.080413-2105)
Operating System
YThere is not enough memory to run the file %s.
Please close other windows and try again.
9The file %s or one of its components could not be opened.
0The file %s or one of its components cannot run.
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"
Error in %s
Missing entry:%s
Error loading %s









Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.

Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    %original file name%.exe:432

  2. Delete the original Trojan file.
  3. Delete or disinfect the following files created/modified by the Trojan:

    %WinDir%\TPavavan.dll (61 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    "Ihoragiqinicim" = "rundll32.exe %WinDir%\TPavavan.dll,Startup"

  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

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