GenPack.Generic.Malware.SIBg.20A29979_3fe91d1493 – Adaware

Dynamic Analysis

Payload

Behaviour	Description
IRCBot	A bot can communicate with command and control servers via IRC channel.

Process activity

The GenPack creates the following process(es):

systec32.exe:1492
~z545158.tmp:496

The GenPack injects its code into the following process(es):

%original file name%.exe:644

Mutexes

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

File activity

The process ~z545158.tmp:496 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\HMNHLGIO\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
%System%\systec32.exe (33 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\PBX2QB5C\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\55UO2EVH\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CT48K6BI\desktop.ini (67 bytes)

The process %original file name%.exe:644 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\~z545158.tmp (33 bytes)

The GenPack deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nsv1.tmp (0 bytes)

Registry activity

The process systec32.exe:1492 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "30 96 FD DF E3 DC 40 1B E0 20 FD F4 3F 7C 8A 55"

[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 GenPack adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Runservices]
"systec32.exe" = "systec32.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"systec32.exe" = "systec32.exe"

The process ~z545158.tmp:496 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E6 FA 61 F1 E6 89 75 25 0F A5 42 E2 65 AD 32 80"

[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"

The process %original file name%.exe:644 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "78 EF 20 CE DE CB 04 F1 03 66 2E 88 91 AD 88 E8"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

Dropped PE files

MD5	File path
8d044d5c3cfda151f961eb26b8558ac2	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\~z545158.tmp
8d044d5c3cfda151f961eb26b8558ac2	c:\WINDOWS\system32\systec32.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

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*

Terminate malicious process(es) (How to End a Process With the Task Manager):
systec32.exe:1492
~z545158.tmp:496
Delete the original GenPack file.
Delete or disinfect the following files created/modified by the GenPack:
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\HMNHLGIO\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
%System%\systec32.exe (33 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\PBX2QB5C\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\55UO2EVH\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CT48K6BI\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\~z545158.tmp (33 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Runservices]
"systec32.exe" = "systec32.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"systec32.exe" = "systec32.exe"
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
Reboot the computer.

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

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
UPX0	4096	204800	0	0	d41d8cd98f00b204e9800998ecf8427e
UPX1	208896	20480	18432	5.44525	2b72c47a9deccd0c25eab5bbf438bba7
.entry	229376	28672	27648	4.00987	0b4972200c4e0642bbecbb7ee1ffc36b
	258048	33920	34304	4.35016	63a414472ccbf8aa9bf880fb19ddd256

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
irc.webchat.org	216.152.78.166

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

%original file name%.exe_644:

`.entry

t%SPV

tDSSh

.DEFAULT\Control Panel\International

Software\Microsoft\Windows\CurrentVersion

... %d%%

verifying installer: %d%%

unpacking data: %d%%

~nsu.tmp

%u.%u%s%s

RegDeleteKeyExA

%s=%s

*?|/":

c:\%original file name%.exe

%original file name%.exe

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsv1.tmp

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\

GetWindowsDirectoryA

RegEnumKeyA

RegOpenKeyExA

RegDeleteKeyA

RegCloseKey

RegCreateKeyExA

ShellExecuteA

SHFileOperationA

ExitWindowsEx

.text

`.rdata

@.data

.ndata

.rsrc

.wuepOp(oc$s4

NEL \*.*

umKey

11111111111111

@@@`777-

Nullsoft Install System v2.29

KERNEL32.DLL

ADVAPI32.dll

COMCTL32.dll

GDI32.dll

ole32.dll

SHELL32.dll

USER32.dll

VERSION.dll

~z545158.tmp

P`.data

.rdata

0@.bss

.idata

systec32.exe

0903176650

irc.webchat.org

[%d-%d-%d %d:%d:%d] %s

%d, %d : USERID : UNIX : %s

PRIVMSG

%s %s :%s

PONG %s

JOIN %s %s

[%s]: Users in %s: %s

[%s]: nick %s already in use.

JOIN

[%s]: %s has joined %s.

[%s]: %s has left %s.

wtf %s?

[%s]: %s has quit(%s).

NICK

[%s]: %s is now known as %s.

[%s]: %s sets mode: %s

[%s]: * %s %s

[%s]: %s

%s%s%s

PRIVMSG %s :error sending pings to %s.

PRIVMSG %s :finished sending pings to %s.

connection type: %s (%s). local IP address: %d.%d.%d.%d. connected from: %s

%s [%s]

cpu: %dMHz. ram: %dKB total, %dKB free. os: Windows %s (%d.%d, build %d). uptime: Ã %dh %dm

invalid URL.

url visited.

error visiting URL.

Software\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\RunServices

%s\r.bat

%%comspec%% /c %s %s

PRIVMSG %s :couldn't open %s.

file download (%s - %dkb transferred)

update (%s - %dkb transferred)

downloaded %.1f kb to %s @ %.1f kb/sec.

PRIVMSG %s :opened %s.

downloaded %.1f kb to %s @ %.1f kb/sec. updating...

update failed: error executing file.

bad url, or dns error.

USERHOST %s

user %s logged out.

NOTICE %s :%s

screw you %s!

joined channel %s.

NOTICE %s :

VERSION %s

login

password accepted.

user %s(%s) logged in.

$rndnick

rndnick

QUIT :%s

sdbot 0.5b ready. Up Ã %dh %dm.

sdbot 0.5b by [sd] (sdbot@mail.ru). homepage: hXXp://sdbot.n3.net/

%d. %s

%d. %s = %s

nick

NICK %s

join

PART %s

c_rndnick

%s -> %s

privmsg

ACTION %s

MODE %s

%s %s %s :%s

c_nick

c_join

%s\%s.exe

update (%s)

downloading update from %s...

couldn't execute file.

clone (%s)

clone created on %s:%d, in channel %s.

download (%s)

downloading %s...

redirect (%d->%s:%d)

redirect created on port %d to %s:%d.

c_privmsg

[%s] %s

[%s] * %s %s

ping (%s)

sending %d pings to %s. packet size: %d, timeout: %d[ms]

icmp.dll not available

spy (%s)

spy created on %s:%d, in channel %s.

USER %s 0 0 :%s

connected to %s.

ICMP.DLL

kernel32.dll

Mozilla/4.0 (compatible)

WININET.DLL

udp $1 100 2048 50

raw PRIVMSG $1 :$chr(1)$2-$chr(1)

ctcp

VirtualQuery failed for %d bytes at address %p

Unknown pseudo relocation protocol version %d.

Unknown pseudo relocation bit size %d.

../../gcc-3.4.5/gcc/config/i386/w32-shared-ptr.c

HttpOpenRequestA

HttpSendRequestA

InternetCrackUrlA

InternetOpenUrlA

ADVAPI32.DLL

KERNEL32.dll

msvcrt.dll

SHELL32.DLL

WSOCK32.DLL

%original file name%.exe_644_rwx_00401000_00036000:

t%SPV

tDSSh

.DEFAULT\Control Panel\International

Software\Microsoft\Windows\CurrentVersion

... %d%%

verifying installer: %d%%

unpacking data: %d%%

~nsu.tmp

%u.%u%s%s

RegDeleteKeyExA

%s=%s

*?|/":

c:\%original file name%.exe

%original file name%.exe

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\nsv1.tmp

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\

GetWindowsDirectoryA

RegEnumKeyA

RegOpenKeyExA

RegDeleteKeyA

RegCloseKey

RegCreateKeyExA

ShellExecuteA

SHFileOperationA

ExitWindowsEx

.text

`.rdata

@.data

.ndata

.rsrc

.wuepOp(oc$s4

NEL \*.*

%original file name%.exe_644_rwx_0043F000_00009000:

~z545158.tmp

.text

P`.data

.rdata

0@.bss

.idata

systec32.exe

0903176650

irc.webchat.org

[%d-%d-%d %d:%d:%d] %s

%d, %d : USERID : UNIX : %s

PRIVMSG

%s %s :%s

PONG %s

JOIN %s %s

[%s]: Users in %s: %s

[%s]: nick %s already in use.

JOIN

[%s]: %s has joined %s.

[%s]: %s has left %s.

wtf %s?

[%s]: %s has quit(%s).

NICK

[%s]: %s is now known as %s.

[%s]: %s sets mode: %s

[%s]: * %s %s

[%s]: %s

%s%s%s

PRIVMSG %s :error sending pings to %s.

PRIVMSG %s :finished sending pings to %s.

connection type: %s (%s). local IP address: %d.%d.%d.%d. connected from: %s

%s [%s]

cpu: %dMHz. ram: %dKB total, %dKB free. os: Windows %s (%d.%d, build %d). uptime: Ã %dh %dm

invalid URL.

url visited.

error visiting URL.

Software\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\RunServices

%s\r.bat

%%comspec%% /c %s %s

PRIVMSG %s :couldn't open %s.

file download (%s - %dkb transferred)

update (%s - %dkb transferred)

downloaded %.1f kb to %s @ %.1f kb/sec.

PRIVMSG %s :opened %s.

downloaded %.1f kb to %s @ %.1f kb/sec. updating...

update failed: error executing file.

bad url, or dns error.

USERHOST %s

user %s logged out.

NOTICE %s :%s

screw you %s!

joined channel %s.

NOTICE %s :

VERSION %s

login

password accepted.

user %s(%s) logged in.

$rndnick

rndnick

QUIT :%s

sdbot 0.5b ready. Up Ã %dh %dm.

sdbot 0.5b by [sd] (sdbot@mail.ru). homepage: hXXp://sdbot.n3.net/

%d. %s

%d. %s = %s

nick

NICK %s

join

PART %s

c_rndnick

%s -> %s

privmsg

ACTION %s

MODE %s

%s %s %s :%s

c_nick

c_join

%s\%s.exe

update (%s)

downloading update from %s...

couldn't execute file.

clone (%s)

clone created on %s:%d, in channel %s.

download (%s)

downloading %s...

redirect (%d->%s:%d)

redirect created on port %d to %s:%d.

c_privmsg

[%s] %s

[%s] * %s %s

ping (%s)

sending %d pings to %s. packet size: %d, timeout: %d[ms]

icmp.dll not available

spy (%s)

spy created on %s:%d, in channel %s.

USER %s 0 0 :%s

connected to %s.

ICMP.DLL

kernel32.dll

Mozilla/4.0 (compatible)

WININET.DLL

udp $1 100 2048 50

raw PRIVMSG $1 :$chr(1)$2-$chr(1)

ctcp

VirtualQuery failed for %d bytes at address %p

Unknown pseudo relocation protocol version %d.

Unknown pseudo relocation bit size %d.

../../gcc-3.4.5/gcc/config/i386/w32-shared-ptr.c

RegCloseKey

RegCreateKeyExA

ShellExecuteA

HttpOpenRequestA

HttpSendRequestA

InternetCrackUrlA

InternetOpenUrlA

ADVAPI32.DLL

KERNEL32.dll

msvcrt.dll

SHELL32.DLL

WSOCK32.DLL

systec32.exe_1492:

.text

P`.data

.rdata

0@.bss

.idata

systec32.exe

0903176650

irc.webchat.org

[%d-%d-%d %d:%d:%d] %s

%d, %d : USERID : UNIX : %s

PRIVMSG

%s %s :%s

PONG %s

JOIN %s %s

[%s]: Users in %s: %s

[%s]: nick %s already in use.

JOIN

[%s]: %s has joined %s.

[%s]: %s has left %s.

wtf %s?

[%s]: %s has quit(%s).

NICK

[%s]: %s is now known as %s.

[%s]: %s sets mode: %s

[%s]: * %s %s

[%s]: %s

%s%s%s

PRIVMSG %s :error sending pings to %s.

PRIVMSG %s :finished sending pings to %s.

connection type: %s (%s). local IP address: %d.%d.%d.%d. connected from: %s

%s [%s]

cpu: %dMHz. ram: %dKB total, %dKB free. os: Windows %s (%d.%d, build %d). uptime: Ã %dh %dm

invalid URL.

url visited.

error visiting URL.

Software\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\RunServices

%s\r.bat

%%comspec%% /c %s %s

PRIVMSG %s :couldn't open %s.

file download (%s - %dkb transferred)

update (%s - %dkb transferred)

downloaded %.1f kb to %s @ %.1f kb/sec.

PRIVMSG %s :opened %s.

downloaded %.1f kb to %s @ %.1f kb/sec. updating...

update failed: error executing file.

bad url, or dns error.

USERHOST %s

user %s logged out.

NOTICE %s :%s

screw you %s!

joined channel %s.

NOTICE %s :

VERSION %s

login

password accepted.

user %s(%s) logged in.

$rndnick

rndnick

QUIT :%s

sdbot 0.5b ready. Up Ã %dh %dm.

sdbot 0.5b by [sd] (sdbot@mail.ru). homepage: hXXp://sdbot.n3.net/

%d. %s

%d. %s = %s

nick

NICK %s

join

PART %s

c_rndnick

%s -> %s

privmsg

ACTION %s

MODE %s

%s %s %s :%s

c_nick

c_join

%s\%s.exe

update (%s)

downloading update from %s...

couldn't execute file.

clone (%s)

clone created on %s:%d, in channel %s.

download (%s)

downloading %s...

redirect (%d->%s:%d)

redirect created on port %d to %s:%d.

c_privmsg

[%s] %s

[%s] * %s %s

ping (%s)

sending %d pings to %s. packet size: %d, timeout: %d[ms]

icmp.dll not available

spy (%s)

spy created on %s:%d, in channel %s.

USER %s 0 0 :%s

connected to %s.

ICMP.DLL

kernel32.dll

Mozilla/4.0 (compatible)

WININET.DLL

udp $1 100 2048 50

raw PRIVMSG $1 :$chr(1)$2-$chr(1)

ctcp

VirtualQuery failed for %d bytes at address %p

Unknown pseudo relocation protocol version %d.

Unknown pseudo relocation bit size %d.

../../gcc-3.4.5/gcc/config/i386/w32-shared-ptr.c

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\

[9-14-2016 14:50:15] joined channel #pnp0807.

[9-14-2016 14:50:14] connected to irc.webchat.org.

RegCloseKey

RegCreateKeyExA

ShellExecuteA

HttpOpenRequestA

HttpSendRequestA

InternetCrackUrlA

InternetOpenUrlA

ADVAPI32.DLL

KERNEL32.dll

msvcrt.dll

SHELL32.DLL

WSOCK32.DLL

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps