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Suspicious Data On Hard Drive


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#1 Zomalaja

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Posted 18 March 2012 - 07:41 PM

I found this using WinHex, it is on Hard Disk 0, at offset 0x1400
nobody else that I have asked to look at their drive has found anything at that offset other than all 00.

D4 41 A0 F5 03 00 03 00 22 AF 26 90 DA EC A4 18 35 8D 53 40 9D 8C 4B B1 52 D1 39 5E AF 6B 85 B0
E5 F9 CA DA 7C 54 EA 03 82 49 16 AC 72 1C FF 65 09 4A F6 1C 6E F1 26 08 A8 CE A6 90 66 49 1D BF
59 02 5B A6 3E AE 87 A4 87 62 4F D8 04 97 EE 6C 5A 7E 0F 4A 84 A6 A4 6E D4 8C 51 63 F8 88 3B 1C
93 E6 1B D6 42 5E 17 59 EB 3A FE F5 D7 C6 0D 6B AF 7E A3 C8 86 93 48 05 56 C9 0E 3E 55 96 01 9E
48 C0 50 D4 D2 06 AC 12 EE 92 03 C6 D0 46 6A C1 32 6E 16 8B B0 D8 6F 45 C0 52 2E 9D 6D C3 E9 2E
72 8E E6 B6 BA 85 F9 A8 CA 81 3C 18 2C 07 40 0E 74 70 67 9D 7D 57 FD BE 1F 7B 44 4D C4 AF 08 67
49 9D F6 3D C4 41 71 C7 1E 17 1F E2 30 D6 DF A4 39 17 94 0D 4B CA BC C8 95 09 67 C5 A3 4E 64 0B
F2 A9 4B C6 C2 18 71 18 AC D6 78 EB 7C 74 73 41 C8 CC 21 59 B5 3B CF 8A 8C ED 83 B1 A1 4C D9 8E
29 08 76 A3 D9 23 05 87 DF 31 FE 6D FF CE 83 A4 0D 27 B7 2A 13 4D A1 73 C4 32 A1 91 CC BD 84 7D
F5 D2 B4 95 63 3C 87 E1 B3 6A 91 4A BB 02 2D 89 AA 14 BE 83 09 D4 0A 95 ED 8C 17 74 81 F4 4D 53
BE EF 36 26 20 7D EB 62 01 AD B5 05 6C 2A 15 8F 46 09 2E F4 7C 80 00 CF 7C 4B DA 58 EE 14 AF E7
07 D7 E4 11 02 D9 89 38 33 D6 B2 5B 22 2C 1F 31 55 1E 63 C5 03 42 56 D1 65 E0 09 7F 17 A6 12 59
41 49 4E 21 F2 33 D6 F7 77 9D 10 DE 79 E6 31 FE 24 23 A2 84 BE E0 5F 9F 01 6B 2E 12 46 2F 8A 94
26 0D 55 EE 01 36 86 E9 17 94 42 11 BB EB B1 9C A0 3A 16 0B 56 28 A1 C7 74 00 B9 D3 5B 5B 1B CD
65 3E B9 C2 5C 84 62 53 D5 34 E2 C0 D6 91 95 67 D2 44 99 2B 1C 77 CF 49 55 99 A8 D7 26 AF 8E 3F
24 9D F6 18 14 E1 9D 14 1D 32 73 FF 88 97 11 EE FC 10 59 FD 73 E6 ED 22 52 9C 5D C5 00 00 00 00

Is this something I should be concerned about ? It is in what I think is normally an unused part of the drive, between the MBR and the Partition Boot Sector, not part of any file. I wonder how the heck it got there and what the heck it is. The MBR is at offset 0 and the Partition Boot is at 0x2600.

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#2 jburd1800

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Posted 18 March 2012 - 09:11 PM

You might run it by their forum... http://www.winhex.net/

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#3 Zomalaja

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Posted 20 March 2012 - 06:18 PM

I don't think the WinHex support forum is the place - WinHex didn't put the data there. I have since erased that sector and rebooted, looked again and there were only zeros, then sometime between yesterday and today, there is data in the same place, only the first 8 bytes are the same, the rest is different. The system is Windows 7 so raw writing to the Hard Drive is no simple task. Something is going on but I sure as heck don't know what.

#4 Zomalaja

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Posted 25 March 2012 - 02:13 PM

Turns out it is "Flexnet" AKA "FlexLM" licensing software, used by Adobe Acrobat. If I kill the FlexLM Service, the data never reappears, but Acrobat stops working.

Not sure if it's still an issue but used to be that FlexLM could not be used on a PC that also uses TrueCrypt or some multi-boot Linux systems. Nice ........




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