Gen:Variant.Symmi.39175 (BitDefender), PWS:Win32/Zbot (Microsoft), Trojan-Spy.Win32.Zbot.roln (Kaspersky), Trojan.Win32.Generic!SB.0 (VIPRE), Gen:Variant.Symmi.39175 (B) (Emsisoft), Artemis!34E70334F3F6 (McAfee), WS.Reputation.1 (Symantec), Gen:Variant.Symmi.39175 (FSecure), Zbot.FUK (AVG), Win32:Dropper-gen [Drp] (Avast), TROJ_GEN.R0CBC0DBM14 (TrendMicro), Trojan-PSW.Win32.Zbot.6.FD, Sinowal.YR, GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR (Lavasoft MAS)Behaviour: Trojan-Spy, Trojan-PSW, Trojan, Backdoor
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 34e70334f3f611de4bdf74c5b009434b
SHA1: 8c58a242dda08439318f1e103108410188a3d0ad
SHA256: 58a78ea0c2bdfea755ace65c9fca8075f5e2f151bea97f5507066dc5087ce587
SSDeep: 3072:M IL1a5z5I6C0xvjM5qez5FtKkxvomzh6EorwzoaS0CFjKvqNBglLDpfPMe:M T5zuv0NozUmv9zh6Eorwzof67ZBEe
Size: 185344 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualCv71EXE, UPolyXv05_v6
Company: no certificate found
Created at: 2003-03-22 00:17:59
Analyzed on: WindowsXP SP3 32-bit
Summary: Trojan-PSW. Trojan program intended for stealing users passwords.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan-PSW creates the following process(es):
leyrd.exe:2716
%original file name%.exe:1268
The Trojan-PSW injects its code into the following process(es):
ctfmon.exe:252
File activity
The process %original file name%.exe:1268 makes changes in the file system.
The Trojan-PSW creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\Pehi\leyrd.exe (185 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp5c85c6c5.bat (177 bytes)
Registry activity
The process leyrd.exe:2716 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F5 16 8D 18 EC B9 8F 01 BF B7 DA 01 4B CB B8 51"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process %original file name%.exe:1268 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1A 26 E9 BE 98 E2 1D DE 54 AB 7F 56 2D 69 A6 95"
[HKCU\Software\Microsoft\Bairga]
"Iddy" = "AE B8 62 C0 C6 E5 13 A5 5F 2A 88 2B 1E E0 C0 6C"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process ctfmon.exe:252 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "34 FE 0E 89 C3 19 FF DA 4B 60 BF 44 81 A5 C3 96"
[HKCU\Software\Microsoft\Bairga]
"Iddy" = "AE B8 62 C0 C6 E5 13 A5 5F 2A 88 2B 1E E0 C0 6C"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"
The Trojan-PSW deletes the following value(s) in system registry:
The Trojan-PSW disables automatic startup of the application by deleting the following autorun value:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"
Network activity (URLs)
| URL | IP |
|---|---|
| hxxp://5.254.101.143/res/file.php |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
The Trojan-PSW installs the following user-mode hooks in WINMM.dll:
PlaySoundW
The Trojan-PSW installs the following user-mode hooks in WININET.dll:
HttpEndRequestW
HttpEndRequestA
HttpSendRequestExW
HttpSendRequestExA
InternetSetFilePointer
InternetReadFileExA
HttpSendRequestA
HttpOpenRequestW
HttpSendRequestW
HttpOpenRequestA
InternetQueryDataAvailable
InternetCloseHandle
HttpQueryInfoA
InternetReadFile
The Trojan-PSW installs the following user-mode hooks in CRYPT32.dll:
PFXImportCertStore
The Trojan-PSW installs the following user-mode hooks in USER32.dll:
SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC
The Trojan-PSW installs the following user-mode hooks in ADVAPI32.dll:
CreateProcessAsUserA
CreateProcessAsUserW
The Trojan-PSW installs the following user-mode hooks in WS2_32.dll:
WSASend
gethostbyname
send
closesocket
getaddrinfo
The Trojan-PSW installs the following user-mode hooks in kernel32.dll:
ExitProcess
GetFileAttributesExW
The Trojan-PSW installs the following user-mode hooks in ntdll.dll:
NtCreateThread
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):
leyrd.exe:2716
%original file name%.exe:1268 - Delete the original Trojan-PSW file.
- Delete or disinfect the following files created/modified by the Trojan-PSW:
%Documents and Settings%\%current user%\Application Data\Pehi\leyrd.exe (185 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp5c85c6c5.bat (177 bytes) - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.