Trojan.Delf.Inject.AK_96704b621f

Dynamic Analysis

Payload

Behaviour	Description
WormAutorun	A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.
IRCBot	A bot can communicate with command and control servers via IRC channel.
MSNWorm	A worm can spread its copies through the MSN Messanger.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:636
svhost.exe:1524

The Trojan injects its code into the following process(es):No processes have been created.

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:636 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\3ETRQ6AX\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\UAMN61ZC\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\ISIUYYK3\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\QPYBHCLC\desktop.ini (67 bytes)
%WinDir%\svhost.exe (55 bytes)

Registry activity

The process %original file name%.exe:636 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EB F7 FC 1B 4A 04 5D 4B 64 4D 19 FA 1C 80 39 B0"

[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\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"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[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\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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Windows Messanger Control Center" = "svhost.exe"

The process svhost.exe:1524 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0F 52 9D B7 27 81 E7 9C C8 FD D6 EB 6D EE 90 FA"

[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\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"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[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\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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

Dropped PE files

There are no dropped PE files.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.A worm can spread its copies through the MSN Messanger.

Removals

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:636
   svhost.exe:1524
   

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

   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\3ETRQ6AX\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\UAMN61ZC\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\ISIUYYK3\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\QPYBHCLC\desktop.ini (67 bytes)
   %WinDir%\svhost.exe (55 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Windows Messanger Control Center" = "svhost.exe"

5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   

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

Static Analysis

VersionInfo

No information is available.

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
CODE	4096	18280	18432	4.46099	fde03d7ebcbda002ca6538bec2c59cda
DATA	24576	280	512	1.96418	487bd4c3e1408b573ecc7c630f0a9405
BSS	28672	1785	0	0	d41d8cd98f00b204e9800998ecf8427e
.idata	32768	1158	1536	2.50712	0d295d29ad0c514539397dea5c1c3d7c
.edata	36864	70	512	0.426673	cb286ec0666b81e0e8059da933292ac2
.tls	40960	8	0	0	d41d8cd98f00b204e9800998ecf8427e
.rdata	45056	24	512	0.14174	44d7eea98589ca89f9a1dc09e347e00f
.reloc	49152	1236	1536	4.07757	feba9bee55af72035b5cb6c99508d010
.rsrc	53248	143360	19968	5.53008	8daace41e62de910125112e4a9e512e7

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 1
bbe4dc1b3c89e679000a6eb4bef8293c

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

svhost.exe_1524:

.text

.text

`.rdata

`.rdata

@.data

@.data

t1SSSSh

t1SSSSh

SSShl

SSShl

r.getfile

r.getfile

r.new

r.new

r.update

r.update

r.upd4te

r.upd4te

login

login

msn.msg

msn.msg

msn.stop

msn.stop

aim.msg

aim.msg

aim.stop

aim.stop

triton.msg

triton.msg

triton.stop

triton.stop

GetWindowsDirectoryA

GetWindowsDirectoryA

KERNEL32.dll

KERNEL32.dll

VkKeyScanA

VkKeyScanA

keybd_event

keybd_event

USER32.dll

USER32.dll

MSVCRT.dll

MSVCRT.dll

_acmdln

_acmdln

RegCloseKey

RegCloseKey

RegCreateKeyExA

RegCreateKeyExA

ADVAPI32.dll

ADVAPI32.dll

ole32.dll

ole32.dll

OLEAUT32.dll

OLEAUT32.dll

%s Welcome.

%s Welcome.

%s Fail.

%s Fail.

%s Spy: %s!%s@%s (PM: "%s")

%s Spy: %s!%s@%s (PM: "%s")

%s Fail by: %s!%s@%s (Pass Tried: %s)

%s Fail by: %s!%s@%s (Pass Tried: %s)

%s %s out.

%s %s out.

%s out.

%s out.

%s No user at:

%s No user at:

%s Invalid slot:

%s Invalid slot:

%s Kill: threads

%s Kill: threads

%s No threads

%s No threads

%s Killed thread:

%s Killed thread:

%s Failed kt:

%s Failed kt:

%s %s already running: .

%s %s already running: .

%s Fail start %s, err: .

%s Fail start %s, err: .

%s Status: %s. Box Uptime: %s, Bot Uptime: %s, Connected for: %s.

%s Status: %s. Box Uptime: %s, Bot Uptime: %s, Connected for: %s.

%s Bot installed on: %s.

%s Bot installed on: %s.

Go fuck yourself %s.

Go fuck yourself %s.

MSN// Message & Zipfile sent to: %d contacts.

MSN// Message & Zipfile sent to: %d contacts.

MSN// Message sent to: %d Contacts.

MSN// Message sent to: %d Contacts.

MSN// Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

MSN// Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

Infected USB Drive %s

Infected USB Drive %s

%s logged in.

%s logged in.

Removed by: %s!%s@%s

Removed by: %s!%s@%s

%s Advapi.dll Failed

%s Advapi.dll Failed

%s PStore.dll Failed.

%s PStore.dll Failed.

%s Naim thd.

%s Naim thd.

%s RuC.

%s RuC.

%s mis param.

%s mis param.

%s Failed to parse command.

%s Failed to parse command.

%s Downloading URL: %s to: %s.

%s Downloading URL: %s to: %s.

%s Downloading update from: %s to: %s.

%s Downloading update from: %s to: %s.

%seraseme_%d%d%d%d%d.exe

%seraseme_%d%d%d%d%d.exe

%s Thread Disabled.

%s Thread Disabled.

%s Thread Activated: Sending Message.

%s Thread Activated: Sending Message.

%s Bad URL or DNS Error, error:

%s Bad URL or DNS Error, error:

%s Update failed: Error executing file: %s.

%s Update failed: Error executing file: %s.

%s Process Finished: "%s", Total Running Time: %s.

%s Process Finished: "%s", Total Running Time: %s.

%s Created process: "%s", PID:

%s Created process: "%s", PID:

%s Failed to create process: "%s", error:

%s Failed to create process: "%s", error:

%s Couldn't parse path, error:

%s Couldn't parse path, error:

%s File download: %.1fKB to: %s @ %.1fKB/sec.

%s File download: %.1fKB to: %s @ %.1fKB/sec.

%s Couldn't open file for writing: %s.

%s Couldn't open file for writing: %s.

Ping Timeout? (%d-%d)%d/%d

Ping Timeout? (%d-%d)%d/%d

USER %s * 0 :%s

USER %s * 0 :%s

NICK %s

NICK %s

PASS %s

PASS %s

QUIT %s

QUIT %s

PONG %s

PONG %s

NICK

NICK

PRIVMSG

PRIVMSG

JOIN

JOIN

PRIVMSG %s :%s

PRIVMSG %s :%s

JOIN %s

JOIN %s

JOIN %s %s

JOIN %s %s

MODE %s %s %s

MODE %s %s %s

MODE %s %s

MODE %s %s

__oxFrame.class__

__oxFrame.class__

shlwapi.dll

shlwapi.dll

psapi.dll

psapi.dll

SQLDisconnect

SQLDisconnect

SQLFreeHandle

SQLFreeHandle

SQLAllocHandle

SQLAllocHandle

SQLExecDirect

SQLExecDirect

SQLSetEnvAttr

SQLSetEnvAttr

SQLDriverConnect

SQLDriverConnect

odbc32.dll

odbc32.dll

ShellExecuteA

ShellExecuteA

shell32.dll

shell32.dll

mpr.dll

mpr.dll

GetUdpTable

GetUdpTable

GetTcpTable

GetTcpTable

iphlpapi.dll

iphlpapi.dll

dnsapi.dll

dnsapi.dll

netapi32.dll

netapi32.dll

Mozilla/4.0 (compatible)

Mozilla/4.0 (compatible)

InternetCrackUrlA

InternetCrackUrlA

InternetOpenUrlA

InternetOpenUrlA

FtpPutFileA

FtpPutFileA

FtpGetFileA

FtpGetFileA

HttpSendRequestA

HttpSendRequestA

HttpOpenRequestA

HttpOpenRequestA

wininet.dll

wininet.dll

ws2_32.dll

ws2_32.dll

RegEnumKeyExA

RegEnumKeyExA

advapi32.dll

advapi32.dll

user32.dll

user32.dll

kernel32.dll

kernel32.dll

%s!%s@%s

%s!%s@%s

svhost.exe

svhost.exe

X!asd@staff.m00p.org

X!asd@staff.m00p.org

Windows Messanger Control Center

Windows Messanger Control Center

love.mydyn.net

love.mydyn.net

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

%s\%s

%s\%s

%s No %s thread found.

%s No %s thread found.

%s %s thread stopped. (%d thread(s) stopped.)

%s %s thread stopped. (%d thread(s) stopped.)

\autorun.inf

\autorun.inf

icon=%SystemRoot%\system32\SHELL32.dll,4

icon=%SystemRoot%\system32\SHELL32.dll,4

autorunme.exe

autorunme.exe

[.ShellClassInfo]

[.ShellClassInfo]

CLSID={645FF040-5081-101B-9F08-00AA002F954E}

CLSID={645FF040-5081-101B-9F08-00AA002F954E}

\Desktop.ini

\Desktop.ini

del "%s">nul

del "%s">nul

if exist "%s" goto Repeat

if exist "%s" goto Repeat

ping 0.0.0.0>nul

ping 0.0.0.0>nul

%s\removeMe%i%i%i%i.bat

%s\removeMe%i%i%i%i.bat

192.168.1.125

192.168.1.125