Trojan-Dropper.Win32.Dapato.diin (Kaspersky), Trojan.GenericKD.1433539 (B) (Emsisoft), Gen:Variant.Kazy.303727 (AdAware), Worm.Win32.Cridex.FD, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan-Dropper, Trojan, Worm
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 029173387d9218d9a6260f5fe48a6237
SHA1: 85c9be75497e0a8b2ade83481f5b5dcd4aed29f0
SHA256: e0ed2a54db150527f1f4b1faa25b1e3c02b041f44c4cce1fd0a84f6f7b5b13f2
SSDeep: 3072:A3ILkQxlSxIu0E0IWAcWQNGoK6BkXSfXe1EAH:jlSxxwIHGvqOe1/
Size: 134656 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2013-11-05 01:29:58
Analyzed on: WindowsXPESX SP3 32-bit
Summary: Trojan-Dropper. Trojan program, intended for stealth installation of other malware into user's system.
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan creates the following process(es):
%original file name%.exe:2508
KB00904859.exe:2784
The Trojan injects its code into the following process(es):
Explorer.EXE:1948
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:2508 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\KB00904859.exe (673 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\expB2.tmp.bat (190 bytes)
Registry activity
The process %original file name%.exe:2508 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
The process KB00904859.exe:2784 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
Dropped PE files
There are no dropped PE files.
HOSTS file anomalies
No changes have been detected.
Rootkit activity
The Trojan installs the following user-mode hooks in Secur32.dll:
InitializeSecurityContextA
UnsealMessage
SealMessage
InitializeSecurityContextW
DeleteSecurityContext
The Trojan installs the following user-mode hooks in WS2_32.dll:
WSASend
recv
WSARecv
send
connect
closesocket
The Trojan installs the following user-mode hooks in ntdll.dll:
LdrLoadDll
NtResumeThread
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):
%original file name%.exe:2508
KB00904859.exe:2784 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Application Data\KB00904859.exe (673 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\expB2.tmp.bat (190 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
Company Name: Bikmd Vlrip
Product Name: Frwcrzo Anvy Dhmvu
Product Version: 7.18.6938.33642
Legal Copyright: Copyright (c) Bikmd Vlrip
Legal Trademarks:
Original Filename: Frwcrzo.exe
Internal Name: Frwcrzo
File Version: 7.18.6938.33642
File Description: Frwcrzo Zdmuiy Ixryhga Mmgyx
Comments:
Language: English (United States)
Company Name: Bikmd VlripProduct Name: Frwcrzo Anvy DhmvuProduct Version: 7.18.6938.33642Legal Copyright: Copyright (c) Bikmd VlripLegal Trademarks: Original Filename: Frwcrzo.exeInternal Name: FrwcrzoFile Version: 7.18.6938.33642File Description: Frwcrzo Zdmuiy Ixryhga MmgyxComments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 4096 | 6977 | 7168 | 3.81754 | 3191a7afbe60661d936939dee4f5a89f |
.data | 12288 | 3980 | 4096 | 1.71621 | 2d439ced00b2635c75ac19a3582b1656 |
.reloc | 16384 | 1980 | 2048 | 4.60219 | 008f6c7ef86370b0b50896b80f83290c |
.rsrc | 20480 | 19954 | 19968 | 4.10747 | fb9cefe9c359d77528cc26a0265a68f6 |
.rdata | 40960 | 99953 | 100352 | 3.38058 | 833aff0323be49e359bf036749d2a711 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
URL | IP |
---|---|
hxxp://31.31.204.59/bgb8LDA/pPyyx/yLrJeD/ | |
hxxp://masterupdate.ru/bgb8LDA/pPyyx/yLrJeD/ | 31.31.204.59 |
hxxp://updatecheck.co.ua/bgb8LDA/pPyyx/yLrJeD/ |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
POST /bgb8LDA/pPyyx/yLrJeD/ HTTP/1.1
Accept: */*
User-Agent: Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)
Host: masterupdate.ru
Content-Length: 335
Connection: Keep-Alive
Cache-Control: no-cache
..>u*.T.........D.....3..kiW.(s..V.:n..8(R."-Z..J..F../..]..@[|.. ..W1.U...?y..F}..|...*D&..[.....BX.k.,
lo......9p..C...z.T....(.w.D.t....z...$...f.dM.#....0b.Al|.h..b..;CC.e"..p#...!......Ex.d...5..!.2y.1..^&O.I..:.D..<A,... V.*..p....D./..R..d V./K.Nk.J... ...3cf}
..7^p....VT....:-.._7..q.....{... ...#.....i..x..y..PQ..?....j
HTTP/1.1 404 Not Found
Server: nginx
Date: Wed, 29 Oct 2014 15:41:12 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
234..<html>..<head><title>404 Not Found</title></head>..<body bgcolor="white">..<center><h1>404 Not Found</h1></center>..<hr><center>nginx</center>..</body>..</html>..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..0..
POST /bgb8LDA/pPyyx/yLrJeD/ HTTP/1.1
Accept: */*
User-Agent: Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)
Host: updatecheck.co.ua
Content-Length: 335
Connection: Keep-Alive
Cache-Control: no-cache
yS.D.....PC..;.*...L.?...0q......C.j..hq.>r........_wPds..?u.^.....L.H.*..1..?..0.1..*.X....V...RT...E..te....@....~y...........(.w.D.t....z...$..G..l:...Y..O.D...,QO.a.g.U...gk...O...iA.....gIU/!%M.=z.|/.W.~.-X..I.......^.y... U%Q.....u...p\n...K.. .'...5......g(...h:...U@hs...:.H..r...E. k..j..ZM....L.......-Y.}o.S....@......c0
HTTP/1.1 404 Not Found
Server: nginx
Date: Wed, 29 Oct 2014 15:41:12 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
234..<html>..<head><title>404 Not Found</title></head>..<body bgcolor="white">..<center><h1>404 Not Found</h1></center>..<hr><center>nginx</center>..</body>..</html>..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..<!-- a padding to disable MSIE and Chrome friendly error page -->..0..
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
Explorer.EXE_1948_rwx_01100000_00019000:
.text
.text
`.rdata
`.rdata
@.data
@.data
.reloc
.reloc
SSSShTP
SSSShTP
application/x-www-form-urlencoded
application/x-www-form-urlencoded
]]>
]]>
]]>
]]>
]]>
]]>
]]>
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%u
%u
]]>
]]>
]]>
]]>
%%.%us%%u%%u%%u %%.%us%%u%%u%%uhttpshots
httpshots
httpinjects
httpinjects
%u.%u.%u.%u:%u
%u.%u.%u.%u:%u
crypt32.dll
crypt32.dll
del /F /Q /A "%S"
del /F /Q /A "%S"
if exist "%S" goto R
if exist "%S" goto R
HTTP/1.0
HTTP/1.0
HTTP/1.1
HTTP/1.1
https
https
httpinject
httpinject
HTTP/1.1 200 OK
HTTP/1.1 200 OK
Content-Disposition: attachment; filename=%S
Content-Disposition: attachment; filename=%S
cabinet.dll
cabinet.dll
nss3.dll
nss3.dll
ssl3.dll
ssl3.dll
nspr4.dll
nspr4.dll
wininet.dll
wininet.dll
ws2_32.dll
ws2_32.dll
secur32.dll
secur32.dll
kernel32.dll
kernel32.dll
ntdll.dll
ntdll.dll
SSL_ImportFD
SSL_ImportFD
InternetCrackUrlW
InternetCrackUrlW
HttpSendRequestExW
HttpSendRequestExW
HttpQueryInfoA
HttpQueryInfoA
HttpOpenRequestW
HttpOpenRequestW
HttpEndRequestW
HttpEndRequestW
CryptImportPublicKeyInfo
CryptImportPublicKeyInfo
CertDeleteCertificateFromStore
CertDeleteCertificateFromStore
CertDuplicateCertificateContext
CertDuplicateCertificateContext
CertEnumCertificatesInStore
CertEnumCertificatesInStore
CertCloseStore
CertCloseStore
PFXExportCertStoreEx
PFXExportCertStoreEx
CertOpenSystemStoreW
CertOpenSystemStoreW
PFXImportCertStore
PFXImportCertStore
SHLWAPI.dll
SHLWAPI.dll
CreatePipe
CreatePipe
GetProcessHeap
GetProcessHeap
KERNEL32.dll
KERNEL32.dll
CryptExportKey
CryptExportKey
CryptGenKey
CryptGenKey
CryptDestroyKey
CryptDestroyKey
RegCreateKeyExW
RegCreateKeyExW
RegOpenKeyExW
RegOpenKeyExW
RegNotifyChangeKeyValue
RegNotifyChangeKeyValue
RegCloseKey
RegCloseKey
ADVAPI32.dll
ADVAPI32.dll
SHELL32.dll
SHELL32.dll
|.^$* ?()[\
|.^$* ?()[\
4H4d4y4
4H4d4y4
2"2D2U2
2"2D2U2
8094989
8094989
Software\Microsoft\Windows NT\CX
Software\Microsoft\Windows NT\CX
Mozilla\Firefox\Profiles
Mozilla\Firefox\Profiles
chrome.exe
chrome.exe
firefox.exe
firefox.exe
explorer.exe
explorer.exe
Local\XMEX
Local\XMEX
Local\XMMX
Local\XMMX
Local\XMIX
Local\XMIX
NSoftware\Microsoft\Windows\CurrentVersion\Run
NSoftware\Microsoft\Windows\CurrentVersion\Run
ShXXp://renataltd.ru
ShXXp://renataltd.ru
hXXp://montierco.ru
hXXp://montierco.ru
hXXp://pianiykrolik.ru
hXXp://pianiykrolik.ru
hXXp://masterupdate.ru
hXXp://masterupdate.ru
hXXp://updatecheck.co.ua
hXXp://updatecheck.co.ua
Local\XMSX
Local\XMSX
Local\XMFX
Local\XMFX
Local\XMRX
Local\XMRX
Software\Microsoft\Windows NT\SX
Software\Microsoft\Windows NT\SX
sKBd.exe
sKBd.exe
Local\XMQX
Local\XMQX
Local\XMBX
Local\XMBX
"%s" /c "%s"
"%s" /c "%s"
/c "%s"
/c "%s"
Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)
Mozilla/5.0 (Windows; U; MSIE 7.0; Windows NT 6.0; en-US)
Software\Microsoft\Windows NT\CECEA88B2
Software\Microsoft\Windows NT\CECEA88B2
%WinDir%\Explorer.EXE
%WinDir%\Explorer.EXE
%Documents and Settings%\%current user%\Application Data\EA8B7786\EA8B7786.srv
%Documents and Settings%\%current user%\Application Data\EA8B7786\EA8B7786.srv
%Documents and Settings%\%current user%\Application Data\EA8B7786\EA8B7786
%Documents and Settings%\%current user%\Application Data\EA8B7786\EA8B7786
%Documents and Settings%\%current user%\Application Data\EA8B7786
%Documents and Settings%\%current user%\Application Data\EA8B7786
Software\Microsoft\Windows NT\SEA8B7786
Software\Microsoft\Windows NT\SEA8B7786
%Documents and Settings%\%current user%\Application Data\KB00904859.exe
%Documents and Settings%\%current user%\Application Data\KB00904859.exe
%Documents and Settings%\%current user%\Application Data
%Documents and Settings%\%current user%\Application Data
KB00904859.exe
KB00904859.exe