[Vol-users] DPC procedure localization

Hi all, I'd like to ask you for your help with analysis. The timers module shows that there is a strange DPC at 0x8647e4e0. Timers module output: Offset(V) DueTime Period(ms) Signaled Routine Module ---------- ------------------------ ---------- ---------- ---------- ------ 0x873097d0 0x0000002f:0x2db9d0c3 0 - 0xa7386d8e arp1394.sys 0x85b9a2c8 0x8000002d:0x6d7d7c8e 0 - 0x80538a98 ntoskrnl.exe 0x8a332b20 0x0000002f:0x2ea5d991 0 - 0xb9ddef1a NDIS.sys 0x863ead10 0x00010014:0x863ead28 -205...072 Yes 0x8647e4e0 UNKNOWN 0x85e451e8 0x00010014:0x85e45200 -205...072 Yes 0x8647e4e0 UNKNOWN I am not able to identify where this procedure belongs to. I've been searching through Volatility documentation project for a hint, but with no luck so far. Volshell show me that: 0x8647e4e0 e0e4 LOOPNZ 0x8647e4c6 0x8647e4e2 47 INC EDI 0x8647e4e3 86e0 XCHG AL, AH 0x8647e4e5 e447 IN AL, 0x47 0x8647e4e7 86e8 XCHG AL, CH 0x8647e4e9 e447 IN AL, 0x47 0x8647e4eb 86e8 XCHG AL, CH 0x8647e4ed e447 IN AL, 0x47 0x8647e4ef 8600 XCHG [EAX], AL 0x8647e4f1 803b99 CMP BYTE [EBX], 0x99 0x8647e4f4 00403b ADD [EAX+0x3b], AL 0x8647e4f7 99 CDQ 0x8647e4f8 00b0fd7f0000 ADD [EAX+0x7ffd], DH 0x8647e4fe 0000 ADD [EAX], AL ... ... 0x8647e4c6 0000 ADD [EAX], AL 0x8647e4c8 d00a ROR BYTE [EDX], 0x1 0x8647e4ca 93 XCHG EBX, EAX 0x8647e4cb 8a00 MOV AL, [EAX] 0x8647e4cd 0000 ADD [EAX], AL 0x8647e4cf 20c8 AND AL, CL 0x8647e4d1 db12 FIST DWORD [EDX] 0x8647e4d3 8726 XCHG [ESI], ESP 0x8647e4d5 ad LODSD 0x8647e4d6 74e1 JZ 0x8647e4b9 0x8647e4d8 06 PUSH ES 0x8647e4d9 007000 ADD [EAX+0x0], DH 0x8647e4dc 0000 ADD [EAX], AL 0x8647e4de 0000 ADD [EAX], AL 0x8647e4e0 e0e4 LOOPNZ 0x8647e4c6 0x8647e4e2 47 INC EDI 0x8647e4e3 86e0 XCHG AL, AH 0x8647e4e5 e447 IN AL, 0x47 0x8647e4e7 86e8 XCHG AL, CH 0x8647e4e9 e447 IN AL, 0x47 0x8647e4eb 86e8 XCHG AL, CH 0x8647e4ed e447 IN AL, 0x47 0x8647e4ef 8600 XCHG [EAX], AL 0x8647e4f1 803b99 CMP BYTE [EBX], 0x99 0x8647e4f4 00403b ADD [EAX+0x3b], AL 0x8647e4f7 99 CDQ 0x8647e4f8 00b0fd7f0000 ADD [EAX+0x7ffd], DH 0x8647e4fe 0000 ADD [EAX], AL 0x8647e500 60 PUSHA 0x8647e501 793b JNS 0x8647e53e 0x8647e53e 3e869ec7130008 XCHG [ESI+0x80013c7], BL 0x8647e545 1000 ADC [EAX], AL 0x8647e547 0410 ADD AL, 0x10 0x8647e549 b268 MOV DL, 0x68 0x8647e54b 8a10 MOV DL, [EAX] 0x8647e54d b268 MOV DL, 0x68 0x8647e54f 8ad8 MOV BL, AL So I looked around and found that at offset 0x80013000 is a executable file 0x80013000 4d 5a 90 00 03 00 00 00 04 00 00 00 ff ff 00 00 MZ.............. 0x80013010 b8 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00 ........@....... 0x80013020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x80013030 00 00 00 00 00 00 00 00 00 00 00 00 e0 00 00 00 ................ 0x80013040 0e 1f ba 0e 00 b4 09 cd 21 b8 01 4c cd 21 54 68 ........!..L.!Th 0x80013050 69 73 20 70 72 6f 67 72 61 6d 20 63 61 6e 6e 6f is.program.canno 0x80013060 74 20 62 65 20 72 75 6e 20 69 6e 20 44 4f 53 20 t.be.run.in.DOS. 0x80013070 6d 6f 64 65 2e 0d 0d 0a 24 00 00 00 00 00 00 00 mode....$....... 0x80013080 5d ed 0b 95 19 8c 65 c6 19 8c 65 c6 19 8c 65 c6 ].....e...e...e. 0x80013090 19 8c 64 c6 30 8c 65 c6 da 83 38 c6 1e 8c 65 c6 ..d.0.e...8...e. 0x800130a0 da 83 6a c6 1b 8c 65 c6 da 83 3b c6 18 8c 65 c6 ..j...e...;...e. 0x800130b0 da 83 3a c6 1c 8c 65 c6 da 83 3f c6 18 8c 65 c6 ..:...e...?...e. 0x800130c0 52 69 63 68 19 8c 65 c6 00 00 00 00 00 00 00 00 Rich..e......... 0x800130d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x800130e0 50 45 00 00 4c 01 07 00 b4 52 02 48 00 00 00 00 PE..L....R.H.... 0x800130f0 00 00 00 00 e0 00 0e 01 0b 01 07 0a 00 1d 00 00 ................ 0x80013100 00 08 00 00 00 00 00 00 d3 1c 00 00 00 03 00 00 ................ 0x80013110 00 0e 00 00 00 30 01 80 80 00 00 00 80 00 00 00 .....0.......... 0x80013120 05 00 01 00 05 00 01 00 01 00 0a 00 00 00 00 00 ................ 0x80013130 00 28 00 00 00 03 00 00 e6 f1 00 00 01 00 00 24 .(.............$ 0x80013140 00 00 04 00 00 10 00 00 00 00 10 00 00 10 00 00 ................ 0x80013150 00 00 00 00 10 00 00 00 00 00 00 00 00 00 00 00 ................ 0x80013160 1c 1d 00 00 50 00 00 00 00 22 00 00 f8 03 00 00 ....P...."...... 0x80013170 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x80013180 00 26 00 00 1c 01 00 00 b0 0e 00 00 1c 00 00 00 .&.............. 0x80013190 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x800131a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x800131b0 00 00 00 00 00 00 00 00 00 0e 00 00 ac 00 00 00 ................ 0x800131c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 0x800131d0 00 00 00 00 00 00 00 00 2e 74 65 78 74 00 00 00 .........text... 0x800131e0 84 0a 00 00 00 03 00 00 00 0b 00 00 00 03 00 00 ................ 0x800131f0 00 00 00 00 00 00 00 00 00 00 00 00 20 00 00 68 ...............h , but this one seems to be battc.sys driver (how can I dump this using the offset 0x80013000?) 0x80015180 7a 65 44 65 76 69 63 65 00 00 42 41 54 54 43 2e zeDevice..BATTC. 0x80015190 53 59 53 00 46 ec 25 ff 00 3d 00 00 74 03 e9 03 SYS.F.%..=..t... I also tried to look around the offset 0x8647e4e0 for some strings 0x864716a0 00 00 00 00 00 00 00 00 00 00 00 00 43 3a 5c 50 ............C:\P 0x864716b0 72 6f 67 72 61 6d 20 46 69 6c 65 73 5c 57 61 76 rogram.Files\Wav 0x864716c0 65 20 53 79 73 74 65 6d 73 20 43 6f 72 70 5c 53 e.Systems.Corp\S 0x864716d0 65 72 76 69 63 65 73 20 4d 61 6e 61 67 65 72 5c ervices.Manager\ 0x864716e0 44 6f 63 4d 67 72 5c 62 69 6e 5c 64 6f 63 6d 67 DocMgr\bin\docmg 0x864716f0 72 2e 65 78 65 00 00 00 00 00 00 00 00 00 00 00 r.exe........... google: DocMgr from Wave Systems Corp. 0x86471890 00 00 00 00 43 3a 5c 57 49 4e 44 4f 57 53 5c 73 ....C:\WINDOWS\s 0x864718a0 74 73 79 73 74 72 61 2e 65 78 65 00 00 00 00 00 tsystra.exe..... google: Sigmatel Audio system tray application 0x86474ce0 00 00 00 00 00 00 00 00 00 f0 c1 9c 53 62 54 72 ............SbTr 0x86474cf0 61 79 4d 61 6e 61 67 65 72 2e 65 00 00 00 00 00 ayManager.e..... google: known as the Safe Boot Tray Manager software 0x8647db30 0d 00 04 0a 56 69 47 63 65 00 78 00 70 00 6c 00 ....ViGce.x.p.l. 0x8647db40 6f 00 72 00 65 00 72 00 2e 00 65 00 78 00 65 00 o.r.e.r...e.x.e. Could it be that the unknown timer was registered by the battc.sys? If anybody can push me the right direction, I'll be more than thankful. Thank you Jaro The information in this message may be proprietary and/or confidential, and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify First Data immediately by replying to this message and deleting it from your computer.