Trojan.Win32.Sasfis_cde52ca1f4

by malwarelabrobot on May 9th, 2014 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Generic.2920075 (B) (Emsisoft), Trojan.Generic.2920075 (AdAware), Trojan.Win32.Sasfis.FD, VirTool.Win32.DelfInject.FD, GenericAutorunWorm.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, VirTool, WormAutorun


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

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Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: cde52ca1f419a886667f4ad93645ef57
SHA1: 75b59c5d193838c359170fcedeaac40e7e2bdcdc
SHA256: 1e37ded1228681cb33ada78370ed48e4eceb62288b091801bb8de2c1b9e5c0fe
SSDeep: 24576:2 xyXMK/7zMJ NnzwlcRMlvHrzLePhyfKPHgJbNCsj1dq:dSTzMJ4wlnlTz6PhyfK4J8e1M
Size: 1193472 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PEBundlev244, UPolyXv05_v6
Company: no certificate found
Created at: 1998-06-11 02:10:30
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

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.

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)

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:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

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

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


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):

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

  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\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)

  4. 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"

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

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

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