Trojan.Win32.Sasfis_cde52ca1f4 – Adaware

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.

Process activity

The Trojan creates the following process(es):

Xbox 360 1 Generator.exe:1868
Xbox 360 1 Generator.exe:884
%original file name%.exe:1816
%original file name%.exe:1916

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

svchost.exe:392

File activity

The process %original file name%.exe:1816 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\Xbox 360 1 Generator.exe (1690 bytes)

The process %original file name%.exe:1916 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\nta1.tmp (11010 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe (7726 bytes)

Registry activity

The process Xbox 360 1 Generator.exe:1868 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AB 48 05 9E 43 03 35 DE 2F 5E 50 5A CC 63 E5 6B"

The process Xbox 360 1 Generator.exe:884 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "78 9A 23 AA 34 97 51 06 71 B5 A9 A0 CD 32 F6 43"

The process %original file name%.exe:1816 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "35 9B 31 EE 67 E8 70 3C 56 C0 DA D3 DC BF 92 87"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"Xbox 360 1 Generator.exe" = "Xbox 360 1 Month Generator"

[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 %original file name%.exe:1916 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "53 FD 0A 6C 86 AD 7B 79 22 85 F1 43 8D F1 37 AC"

[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"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

[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 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"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\Microsoft]
"svchost.exe" = "svchost"

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"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"svchost.exe" = "%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe"

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"

Dropped PE files

MD5	File path
4fb928be9763d8ec07b5640b106004c8	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\Xbox 360 1 Generator.exe

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.

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):
Xbox 360 1 Generator.exe:1868
Xbox 360 1 Generator.exe:884
%original file name%.exe:1816
%original file name%.exe:1916
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\Xbox 360 1 Generator.exe (1690 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nta1.tmp (11010 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe (7726 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"svchost.exe" = "%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe"
Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
Reboot the computer.

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

Static Analysis

VersionInfo

Company Name: dGVpIc
Product Name: omgyvRnMRO
Product Version: 1.00
Legal Copyright:
Legal Trademarks:
Original Filename: dsNOY
Internal Name: dsNOY
File Version: 1.00
File Description:
Comments:
Language: English (United States)

Company Name: dGVpIcProduct Name: omgyvRnMROProduct Version: 1.00Legal Copyright: Legal Trademarks: Original Filename: dsNOYInternal Name: dsNOYFile Version: 1.00File Description: Comments: Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	192512	192512	3.56382	404f7cb1458da2877b335e50fde3fd71
.data	196608	12288	0	0	d41d8cd98f00b204e9800998ecf8427e
.rsrc	208896	724992	724992	5.53898	da0a9d8f6a4993ac0242ae746ac3667b
.UniPrt	933888	172032	172032	2.40193	92a584f41f8bdda9ff5eccb425f8490f
blvsehq	1105920	102400	99840	5.54396	643a0807920e57b939205eecf9ce7775

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

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

Xbox 360 1 Generator.exe_1868:

.text

`.data

.rsrc

MSVBVM60.DLL

(7),01444

'9=82<.342

jWwEb

E$l%U

3333333121111

111111111000

333353200

\=%u5

t&%u;

9_nj

Xbox.com

C:\DOCUME~1\COMPAQ~1\LOCALS~1\Temp\RarSFX1\AutoPlay\Docs\Portable.VB6\VB6.OLB

shell32.dll

ShellExecuteA

VBA6.DLL

C:\Documents a

www.xbox.com

X360 Generator.exe

Xbox 360 1 Generator.exe_884:

.text

`.data

.rsrc

MSVBVM60.DLL

(7),01444

'9=82<.342

jWwEb

E$l%U

3333333121111

111111111000

333353200

\=%u5

t&%u;

9_nj

Xbox.com

C:\DOCUME~1\COMPAQ~1\LOCALS~1\Temp\RarSFX1\AutoPlay\Docs\Portable.VB6\VB6.OLB

shell32.dll

ShellExecuteA

VBA6.DLL

C:\Documents a

www.xbox.com

X360 Generator.exe

svchost.exe_392:

.idata

.rdata

P.reloc

P.rsrc

P.yvs

kernel32.dll

$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)

oleaut32.dll

EVariantBadIndexError

SQL error or missing database

An internal logic error in SQLite

Operation terminated by sqlite3_interrupt()

Uses OS features not supported on host

2nd parameter to sqlite3_bind out of range

sqlite3_step() has another row ready

sqlite3_step() has finished executing

Unknown SQLite Error Code "

ESQLiteException

TSQLiteDatabase

TSQLiteTable

sqlite3_open

sqlite3_errmsg

sqlite3_free

sqlite3_close

sqlite3_last_insert_rowid

sqlite3_total_changes

sqlite3_errcode

sqlite3_bind_text

sqlite3_bind_int

sqlite3_bind_int64

sqlite3_bind_double

sqlite3_bind_null

sqlite3_bind_blob

sqlite3_prepare_v2

sqlite3_step

sqlite3_reset

sqlite3_finalize

sqlite3_prepare

sqlite3_busy_timeout

sqlite3_libversion

sqlite3_create_collation

sqlite3_bind_parameter_index

sqlite3_changes

sqlite3_column_count

sqlite3_column_name

sqlite3_column_decltype

sqlite3_column_type

sqlite3_column_int64

sqlite3_column_double

sqlite3_column_bytes

sqlite3_column_blob

sqlite3_column_text

Failed to open database "%s" : %s

Failed to open database "%s" : unknown error

Error [%d]: %s.

"%s": %s

Error executing SQL

Could not prepare SQL statement

Error executing SQL statement

SQLite is Busy

udprec

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

:\autorun.inf

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

\Mozilla Firefox\

nss3.dll

mozcrt19.dll

sqlite3.dll

nspr4.dll

plc4.dll

plds4.dll

nssutil3.dll

softokn3.dll

PK11_GetInternalKeySlot

userenv.dll

\Mozilla\Firefox\

profiles.ini

\signons3.txt

\Mozilla\Firefox\profiles.ini

signons.sqlite

SELECT * FROM moz_logins

encryptedPassword

Urlmon.dll

Shell32.dll

URLDownloadToFileA

ShellExecuteA

Future Windows version (unknown)

Windows

UDPPROG1|

UDPStart|

SOFTWARE\Mozilla\Mozilla Firefox\

WEBDL

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

svchost.exe

user32.dll

GetKeyboardType

advapi32.dll

RegOpenKeyExA

RegCloseKey

RegFlushKey

RegCreateKeyExA

GetCPInfo

MsgWaitForMultipleObjects

wsock32.dll

shell32.dll

5 5$5(5,5054585

>">*>2>:>

: :$:(:,:0:4:8:<:@:`:

SQLite3

KWindows

UrlMon

SQLiteTable3

Kernel32.dll

ADVAPI32.dll

Software\Microsoft\Windows\CurrentVersion\Explorer

Cannot open file "%s". %s

Invalid data type for '%s' List capacity out of bounds (%d)

List count out of bounds (%d)

List index out of bounds (%d) Out of memory while expanding memory stream

Failed to get data for '%s'

Failed to set data for '%s'

%s.Seek not implemented$Operation not allowed on sorted list

Thread creation error: %s

Thread Error: %s (%d)

Cannot assign a %s to a %sECheckSynchronize called from thread $%x, which is NOT the main thread%String list does not allow duplicates

Cannot create file "%s". %s

%s (%s, line %d)

Abstract Error?Access violation at address %p in module '%s'. %s of address %p

System Error. Code: %d.

Invalid variant operation%Invalid variant operation (%s%.8x)

%s5Could not convert variant of type (%s) into type (%s)=Overflow while converting variant of type (%s) into type (%s)

Operation not supported

External exception %x

Interface not supported

Invalid pointer operation

Invalid class typecast0Access violation at address %p. %s of address %p

Privileged instruction(Exception %s in module %s at %p.

Application Error1Format '%s' invalid or incompatible with argument

No argument for format '%s'"Variant method calls not supported

!'%s' is not a valid integer value('%s' is not a valid floating point value

I/O error %d

Integer overflow Invalid floating point operation

svchost.exe_392_rwx_00400000_00028000:

.idata

.rdata

P.reloc

P.rsrc

P.yvs

kernel32.dll

$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)

oleaut32.dll

EVariantBadIndexError

SQL error or missing database

An internal logic error in SQLite

Operation terminated by sqlite3_interrupt()

Uses OS features not supported on host

2nd parameter to sqlite3_bind out of range

sqlite3_step() has another row ready

sqlite3_step() has finished executing

Unknown SQLite Error Code "

ESQLiteException

TSQLiteDatabase

TSQLiteTable

sqlite3_open

sqlite3_errmsg

sqlite3_free

sqlite3_close

sqlite3_last_insert_rowid

sqlite3_total_changes

sqlite3_errcode

sqlite3_bind_text

sqlite3_bind_int

sqlite3_bind_int64

sqlite3_bind_double

sqlite3_bind_null

sqlite3_bind_blob

sqlite3_prepare_v2

sqlite3_step

sqlite3_reset

sqlite3_finalize

sqlite3_prepare

sqlite3_busy_timeout

sqlite3_libversion

sqlite3_create_collation

sqlite3_bind_parameter_index

sqlite3_changes

sqlite3_column_count

sqlite3_column_name

sqlite3_column_decltype

sqlite3_column_type

sqlite3_column_int64

sqlite3_column_double

sqlite3_column_bytes

sqlite3_column_blob

sqlite3_column_text

Failed to open database "%s" : %s

Failed to open database "%s" : unknown error

Error [%d]: %s.

"%s": %s

Error executing SQL

Could not prepare SQL statement

Error executing SQL statement

SQLite is Busy

udprec

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

:\autorun.inf

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

\Mozilla Firefox\

nss3.dll

mozcrt19.dll

sqlite3.dll

nspr4.dll

plc4.dll

plds4.dll

nssutil3.dll

softokn3.dll

PK11_GetInternalKeySlot

userenv.dll

\Mozilla\Firefox\

profiles.ini

\signons3.txt

\Mozilla\Firefox\profiles.ini

signons.sqlite

SELECT * FROM moz_logins

encryptedPassword

Urlmon.dll

Shell32.dll

URLDownloadToFileA

ShellExecuteA

Future Windows version (unknown)

Windows

UDPPROG1|

UDPStart|

SOFTWARE\Mozilla\Mozilla Firefox\

WEBDL

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

svchost.exe

user32.dll

GetKeyboardType

advapi32.dll

RegOpenKeyExA

RegCloseKey

RegFlushKey

RegCreateKeyExA

GetCPInfo

MsgWaitForMultipleObjects

wsock32.dll

shell32.dll

5 5$5(5,5054585

>">*>2>:>

: :$:(:,:0:4:8:<:@:`:

SQLite3

KWindows

UrlMon

SQLiteTable3

Kernel32.dll

ADVAPI32.dll

Software\Microsoft\Windows\CurrentVersion\Explorer

Cannot open file "%s". %s

Invalid data type for '%s' List capacity out of bounds (%d)

List count out of bounds (%d)

List index out of bounds (%d) Out of memory while expanding memory stream

Failed to get data for '%s'

Failed to set data for '%s'

%s.Seek not implemented$Operation not allowed on sorted list

Thread creation error: %s

Thread Error: %s (%d)

Cannot assign a %s to a %sECheckSynchronize called from thread $%x, which is NOT the main thread%String list does not allow duplicates

Cannot create file "%s". %s

%s (%s, line %d)

Abstract Error?Access violation at address %p in module '%s'. %s of address %p

System Error. Code: %d.

Invalid variant operation%Invalid variant operation (%s%.8x)

%s5Could not convert variant of type (%s) into type (%s)=Overflow while converting variant of type (%s) into type (%s)

Operation not supported

External exception %x

Interface not supported

Invalid pointer operation

Invalid class typecast0Access violation at address %p. %s of address %p

Privileged instruction(Exception %s in module %s at %p.

Application Error1Format '%s' invalid or incompatible with argument

No argument for format '%s'"Variant method calls not supported

!'%s' is not a valid integer value('%s' is not a valid floating point value

I/O error %d

Integer overflow Invalid floating point operation

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps