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SHA256: 9f99d95bc1c0a47282450f2efee15abe7b56393560185a6ac42e74be8874cbb0
File name: 2421c81b8850a8035d9da79b5d0
Detection ratio: 19 / 24
Analysis date: 2012-11-28 14:30:50 UTC ( 1 year, 4 months ago )
Antivirus Result Update
Agnitum Trojan.DL.Agent!CXLfcipPxe8 20121128
BitDefender Trojan.Generic.219671 20121128
CAT-QuickHeal TrojanDownloader.Agent.aul 20121128
Emsisoft Trojan.Generic.219671 (B) 20121128
Fortinet W32/Agent.AUL!tr.dldr 20121128
Ikarus Trojan-Downloader.Win32.Small 20121128
Jiangmin TrojanDownloader.Agent.aro 20121127
Kingsoft Win32.TrojDownloader.Agent.(kcloud) 20121119
MicroWorld-eScan Trojan.Generic.219671 20121128
Norman W32/Agent.AKFEA 20121127
PCTools Backdoor.Ginwui 20121128
Panda Trj/Downloader.KAS 20121128
Rising Trojan.DL.Delf.cuv 20121128
TheHacker Posible_Worm32 20121127
TotalDefense Win32/SillyDl.CTA 20121128
VBA32 SScope.Trojan.Prosti.2 20121127
VIPRE RiskTool.Win32.ProcessPatcher.Sml!cobra (v) (not malicious) 20121128
ViRobot Trojan.Win32.A.Downloader.13824.GC[UPX] 20121128
nProtect Trojan.Generic.219671 20121128
Antiy-AVL 20121127
ByteHero 20121128
ClamAV 20121128
Comodo 20121128
SUPERAntiSpyware 20121128
The file being studied is a Portable Executable file! More specifically, it is a Win32 EXE file for the Windows GUI subsystem.
Packers identified
PEiD UPX 2.90 [LZMA] -> Markus Oberhumer, Laszlo Molnar & John Reiser
PE header basic information
Target machine Intel 386 or later processors and compatible processors
Compilation timestamp 1992-06-19 22:22:17
Entry Point 0x0000FBE0
Number of sections 3
PE sections
PE imports
LoadLibraryA
ExitProcess
GetProcAddress
RegCloseKey
MessageBoxA
InternetGetConnectedState
Number of PE resources by type
RT_RCDATA 2
DATA 1
Number of PE resources by language
NEUTRAL 3
ExifTool file metadata
MIMEType
application/octet-stream

Subsystem
Windows GUI

MachineType
Intel 386 or later, and compatibles

TimeStamp
1992:06:19 23:22:17+01:00

FileType
Win32 EXE

PEType
PE32

CodeSize
12288

LinkerVersion
2.25

EntryPoint
0xfbe0

InitializedDataSize
4096

SubsystemVersion
4.0

ImageVersion
0.0

OSVersion
4.0

UninitializedDataSize
49152

File identification
MD5 2421c81b8850a8035d9da79b5d02a800
SHA1 521449c8ccf02c3f241b6ab5fc86761b7e7d28d8
SHA256 9f99d95bc1c0a47282450f2efee15abe7b56393560185a6ac42e74be8874cbb0
ssdeep
384:ILAOOLB2TY3HOWbR+VB9adaaS6xzn105s+GkH:ILApB2M3Ht1iMdaaS01y4

File size 13.5 KB ( 13824 bytes )
File type Win32 EXE
Magic literal
MS-DOS executable PE for MS Windows (GUI) Intel 80386 32-bit, UPX compressed

TrID UPX compressed Win32 Executable (38.5%)
Win32 EXE Yoda's Crypter (33.4%)
Win32 Executable Generic (10.7%)
Win32 Dynamic Link Library (generic) (9.5%)
Win16/32 Executable Delphi generic (2.6%)
Tags
peexe upx

VirusTotal metadata
First submission 2012-11-28 14:30:50 UTC ( 1 year, 4 months ago )
Last submission 2012-11-28 14:30:50 UTC ( 1 year, 4 months ago )
File names 2421c81b8850a8035d9da79b5d0
Advanced heuristic and reputation engines
ClamAV PUA
Possibly Unwanted Application. While not necessarily malicious, the scanned file presents certain characteristics which depending on the user policies and environment may or may not represent a threat. For full details see: http://www.clamav.net/index.php?s=pua&lang=en .

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Condensed report! The following is a condensed report of the behaviour of the file when executed in a controlled environment. The actions and events described were either performed by the file itself or by any other process launched by the executed file or subjected to code injection by the executed file.
Opened files
Read files
Written files
Copied files
Deleted files
Set keys
Deleted keys
Created processes
Created mutexes
Opened mutexes
Searched windows
Opened service managers
Opened services
Hooking activity
Runtime DLLs
Additional details
The file uses the IsDebuggerPresent Windows API function in order to see whether it is being debugged.
The file sends control codes directly to certain device drivers making use of the DeviceIoControl Windows API function.
The file installs an application-defined hook procedure into a hook chain. You would install a hook procedure to monitor the system for certain types of events. These events are associated either with a specific thread or with all threads in the same desktop as the calling thread. This is done making use of the SetWindowsHook Windows API function.
HTTP requests
DNS requests
TCP connections
UDP communications