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Unknown infection (Encrypting, Damaging, Editing, Renaming Files) "STUMPF-PC"


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#1 Lobas

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Posted 30 October 2017 - 01:20 PM

Hello,

 

we are having an unknown infection on 7 of 8 computers in our company.

 

I couldn't find much using various AV Programs and Tools.

 

Looked nearer at approximately 50 infected files with Adlice RK PE Viewer, let me see that the most of them are having sandboxes, anti-debugging scanner / debugging blocker and stuff like that to protect itself and hide of AV.

 

At least since beginning of this infection (last Thursday) concrete objects found by AV: (all PC together)

 

G DATA found 6 PSW-Tools and 3 OCS-Tools

ESET found 3 PSW-Tools

RogueKiller found 14 PUM's and 2 Rootkit IAT:Addr(Hook.IEAT)

 

The 8th computer was off and not hanging in the local Intranet by the time of the infection, so he stayed clean. We won't put him back in the network until the other PC are cleaned.

 

Concrete symptoms are: Some files are encrypted (new extensions like .crypt, .crypto, .crypted, .encrypted and so on which aren't possible to open), some files are just renamed or the extension was changed to another normal file type. Some files are damaged, which causes programs to hang often and crash. Some files are just edited shortly ago, which has no visible effect.

 

At least, some programs are completely not working anymore and on 3 PC's there is until now no ability to connect to the Internet.

 

In the hope, someone here can help me, I did scans with Farbar Recovery Scan Tool at the 7 infected PC's.

 

All Logs are now in the same post, because of deletion of my other posts. The logs can be found in the second reply.

 

I hope someone here is able to help me with my problem! :)

 

Greetings Lobas


Edited by Lobas, 30 October 2017 - 06:09 PM.


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#2 Lobas

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Posted 30 October 2017 - 01:30 PM

Sorry for mistake, instead of "STUMPF-PC" it is named "STUMPF-HP", unlike in the title!



#3 Lobas

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Posted 30 October 2017 - 05:41 PM

It seems to be like 6 of my posts have been deleted.

 

Because the only thing variing between them, I will post the other Farbar Logs (of the other computers) here as well.

 

PCSRV: Main PC

Attached File  FRST PCSRV.txt   58.67KB   2 downloads

Attached File  Addition PCSRV.txt   38.36KB   0 downloads

 

PC01: Secondary PC

Attached File  FRST PC01.txt   44.67KB   0 downloads

Attached File  Addition PC01.txt   41.45KB   0 downloads

 

PC201701 ("DESKTOP-NO388OR"): Tertiary PC

Attached File  FRST PC201701.txt   90.37KB   0 downloads

Attached File  Addition PC201701.txt   36.12KB   0 downloads

 

PC05: Tertiary PC

Attached File  FRST PC05.txt   57.23KB   0 downloads

Attached File  Addition PC05.txt   833.22KB   0 downloads

 

STUMPF-HP: Notebook

Attached File  FRST STUMPF-HP.txt   17.57KB   0 downloads

Attached File  Addition STUMPF-HP.txt   7.78KB   0 downloads

 

NETBOOK: Notebook

Attached File  FRST NETBOOK.txt   17.78KB   0 downloads

Attached File  Addition NETBOOK.txt   45.37KB   0 downloads

 

TVW-TC-1671: Auxiliary PC

Attached File  FRST TVW-TC-1671.txt   16.77KB   0 downloads

Attached File  Addition TVW-TC-1671.txt   26.96KB   0 downloads

 

 



#4 HelpBot

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Posted 04 November 2017 - 01:25 PM

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#5 HelpBot

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