[Jaxryley]

This one is hit by MBAM as Rootkit.MBR and seems to auto-delete in a VM?

Someone else might like a play?

cry.exe - Nod32 - Win32/Rootkit.Agent.NRD - MD5: 284d34faac9d07213e2867a9c29d8edf
http://virusscan.jotti.org/en/scanresul ... c497d25f90

cry.rar

(61.78 KiB) Downloaded 106 times

[EP_X0FF]

Yes, it contains some antidebug code :)
If something detected it writes simple self-deletion bat file and exits. Otherwise it drops and loads driver.

http://virscan.org/report/255c20d776515 ... d4306.html

c:\eclipse\botnet\drivers\Bin\i386\kernel.pdb

Driver contains detection of SoftIce and Wireshark by their drivers object names.

More fun strings from driver.

opera.exe thebat.exe thunderbird.exe msimn.exe telnet.exe
IofCompleteRequest МIofCallDriver IOFUNCS:
Мcs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x efl=%08x
Мeip=%08x esp=%08x ebp=%08x
Мeax=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x
CONTEXT: %08x
CALLSTACK:
МEIP: %x
FILE: unknown+0x%x (%08x:%08x) М
М (%08x:%08x) М+0x%x FILE: %ws
Kernel ver %u, OS: %s %u.%u-%u.%u
BugCheck %X, {%08x, %08x, %08x, %08x}

Made test machine unbootable because of BSOD infinite loop :)

[Jaxryley]

Grabbed the dropper, thanks EP_X0FF.

[EP_X0FF]

Googled for driver PDB string and found this :)
Seems to be slightly updated variant of the same.

http://blog.novirusthanks.org/2010/07/p ... part-four/

[Jaxryley]

Malwarebytes hits this as Rootkit MBR. Auto deletes via VM here.

5ec09rrag.exe - 20/43 - NOD32 - a variant of Win32/Rootkit.Agent.NRD - MD5 : 4a07bfcab0a7993a79d3c8733f5e0312
http://www.virustotal.com/file-scan/rep ... 1292554495

5ec09rrag.rar

Pass:
infected
(50.22 KiB) Downloaded 67 times

[EP_X0FF]

Hello,

Sample contains simple antidebug code.

М%08x М%08x %ws+0x%x (%08x:%08x) %08x unknown+0x%x (%08x:%08x) (0x%08X-->0x%08X) М%02X М%s: Мh w b c r IofCompleteRequest МIofCallDriver IOFUNCS:
Мcs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x efl=%08x
Мeip=%08x esp=%08x ebp=%08x
Мeax=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x
CONTEXT: %08x
CALLSTACK:
МEIP: %x
FILE: unknown+0x%x (%08x:%08x) М
М (%08x:%08x) М+0x%x FILE: %ws
Kernel ver %u, OS: %s %u.%u-%u.%u
\ S y s t e m R o o t \ s y s t e m 3 2 \ d r i v e r s \ . s y s \SystemRoot\system32\ . s y s s y s t e m 3 2 \ d r i v e r s \ F i l t e r E r r o r C o n t r o l G r o u p S t a r t T y p e D i s p l a y N a m e I m a g e P a t h \ D e v i c e \ H a r d d i s k 0 \ D R 0 \SystemRoot\Temp\ .tmp ZwDeleteFile ZwClose ZwCreateKey ZwOpenKey ZwDeleteKey ZwQueryValueKey ZwSetValueKey ZwDeleteValueKey ZwFlushKey ZwEnumerateKey ZwEnumerateValueKey ZwQueryInformationFile ZwReadFile ZwWriteFile ZwLoadDriver KdDebuggerEnabled M i c r o s o f t W i n d o w s W i n d o w s C S D V e r s i o n P r o d u c t N a m e \ R E G I S T R Y \ M A C H I N E \ S y s t e m \ C u r r e n t C o n t r o l S e t \ S e r v i c e s \ T c p i p \ P a r a m e t e r s \ I n t e r f a c e s N a m e S e r v e r D h c p N a m e S e r v e r \ R E G I S T R Y \ M A C H I N E \ S Y S T E M \ C u r r e n t C o n t r o l S e t \ S e r v i c e s \ S h a r e d A c c e s s \ P a r a m e t e r s \ F i r e w a l l P o l i c y \ S t a n d a r d P r o f i l e \ G l o b a l l y O p e n P o r t s \ L i s t % u : T C P % u : T C P : * : E n a b l e d : S y s t e m % 0 2 u % u : U D P % u : U D P : * : E n a b l e d : S y s t e m % 0 2 u HTTP/1.1 200 Content-Type application/octet-stream Transfer-Encoding chunked \ D e v i c e \ T c p \ D e v i c e \ U d p \ D r i v e r \ t d x \ D r i v e r \ T c p i p \ R E G I S T R Y \ M A C H I N E \ S Y S T E M \ C u r r e n t C o n t r o l S e t \ S e r v i c e s \ \ S y s t e m R o o t \ s y s t e m 3 2 \ d r i v e r s \ . s y s gotolalaland.ru trokokok.ru POST /update.php HTTP/1.1
Accept: */*
Accept-Language: en
Content-Type: application/octet-stream
User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)
Content-Length:
Pragma: no-cache

Extracted driver attached
https://www.virustotal.com/file-scan/re ... 1292557375

edit:

thread renamed to actual malware name

[cjbi]

Information(s)
Festi: http://www.m86security.com/labs/spambot ... ticle=1359
Dropper: https://www.microsoft.com/security/port ... %2FFesti.C
Rootkit: https://www.microsoft.com/security/port ... %2fFesti.C

String(s)

Driver\\NTICE
Driver\\npf
SystemRoot
sys
.cdata
hwbls
hwldi
hwsht
TransportAddress
ConnectionContext
\r\n\r\n
hwbcr
init
page
opera.exe
thebat.exe
thunderbird.exe
msimn.exe
telnet.exe
c:\eclipse\botnet\drivers\Bin\i386\kernel.pdb
%08x %ws+0x%x (%08x:%08x)
%08x unknown+0x%x (%08x:%08x)
(0x%08X-->0x%08X)
hwbcr
IofCompleteRequest
IofCallDriver
IOFUNCS:\r\n
cs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x
eip=%08x esp=%08x ebp=%08x\r\n
eax=%08x ebx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x\r\n
CONTEXT: %08x\r\n
CALLSTACK:\r\n
FILE: unknown+0x%x (%08x:%08x)
\r\nKernel ver %u, OS: %s %u.%u-%u.%u\r\n\r\n
BugCheck %X, {%08x, %08x, %08x, %08x}
.cdata
.com
CreateModule
DeleteModule
fDereferenceObject
ReferenceObjectByName
IoDriverObjectType
lInitUnicodeString
ExAllocatePoolWithTag
KeUnstackDetachProcess
StackAttachProcess
fCompleteRequest
PoCallDriver
PoStartNextPowerIrp
IoAttachDeviceToDeviceStack
ObfReferenceObject
GetRelatedDeviceObject
ReferenceObjectByHandle
IoGetCurrentProcess
ExFreePoolWithTag
_stricmp
KeGetCurrentThread
WaitForSingleObject
AllocateIrp
ClearEvent
FileObjectType
rcmp
strncat
QuerySystemInformation
KeServiceDescriptorTable
MmIsAddressValid
sprintf
BugCheckEx
GetVersion
BuildDeviceIoControlRequest
InitializeEvent
RtlFreeUnicodeString
RtlCompareUnicodeString
lCopyUnicodeString
GetSystemRoutineAddress
lFreeAnsiString
tlUnicodeStringToAnsiString
lQueryRegistryValues
IoRegisterShutdownNotification
SetPriorityThread
PsCreateSystemThread
RtlUnicodeStringToInteger
RtlTimeToTimeFields
RtlWriteRegistryValue
RtlCreateRegistryKey
swprintf
RtlDeleteRegistryValue
QueryNameString
SeSetAccessStateGenericMapping
lMapGenericMask
CreateAccessState
ObCreateObject
MmProbeAndLockPages
AllocateMdl
WaitForMultipleObjects
ResetEvent
NumberProcessors
_aulldiv
RtlAnsiStringToUnicodeString
RtlInitAnsiString
KeTickCount
ntoskrnl.exe
KeGetCurrentIrql
KfRaiseIrql
KfLowerIrql
KfReleaseSpinLock
KfAcquireSpinLock
HAL.dll
strncpy
csncpy
strlen
lCompareMemory
ReadFile
ZwWriteFile
QuerySystemTime

VirusTotal result(s)
Dropper: http://www.virustotal.com/file-scan/rep ... 1306232349
Rootkit: http://www.virustotal.com/file-scan/rep ... 1306232847

[axl]

King of Spam: Festi botnet analysis [Win32/Rootkit.Festi]
http://blog.eset.com/wp-content/media_f ... alysis.pdf

[EP_X0FF]

That's really old one. Posts moved.

[ynvb]

I`m reviving this thread due to a recent malware that hit our sensors:
https://research.checkpoint.com/return-festi-rootkit/

It seems like Festi is back, years after it stopped and the author was arrested. why and how? still remains a mystery...