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Sat, 03/25/2017 - 03:00

Trojan.NSIS.StartPage_e71addb812

not-a-virus:AdWare.NSIS.Xpyn.j (Kaspersky), Trojan.NSIS.StartPage.FD (Lavasoft MAS) Behaviour: Trojan, Adware

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

Summary

MD5: e71addb81200eda8d727ff771dd477cd

SHA1: f43f92cb4fe77e8a333fe584c042beae1ee0bb83

SHA256: 73a81fc097e149ef47cf1319f532ed9d3584c020e7bbc03e3c5c583c6e5311cd

SSDeep: 196608:etYexgDxAlU/fSKHb peJsJsc5DCO4F1lUlPj9zNeHd9jpsN0D3dfryxIUBJgP8:OjlufSKHW22exUl9SektVuJgk

Size: 13708672 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2015-01-02 05:45:54

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): No processes have been created. The Trojan injects its code into the following process(es):

%original file name%.exe:1908

Mutexes

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

File activity

The process %original file name%.exe:1908 makes changes in the file system.


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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\System.dll (23 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\delete.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\input.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Unicode.dll (13 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bg.png (2 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check-box.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\config.ini (591 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk2.png (8 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp.txt (715 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4ZZNMJGQ\kuao34conf2[1].ini (715 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\jindutiao.png (3 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\DialogEx.dll (808 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk3.png (9 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check1.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk.png (5 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\uncheck1.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\RC4dll.dll (1601 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\finish.png (7 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\uncheck.png (966 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Banner.dll (8 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\yes.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk_bak.png (3616 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\change.png (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Inetc.dll (804 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsx7DA8.tmp (11739 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\jieyabutton.png (10 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp2.txt (715 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\no.png (1 bytes)

The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\config.ini (0 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nss7D88.tmp (0 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp2.txt (0 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp (0 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp.txt (0 bytes)

Registry activity

The process %original file name%.exe:1908 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASMANCS]
"MaxFileSize" = "1048576"
"ConsoleTracingMask" = "4294901760"
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASAPI32]
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASMANCS]
"FileTracingMask" = "4294901760"

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

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASAPI32]
"FileDirectory" = "%windir%\tracing"
"FileTracingMask" = "4294901760"

"ConsoleTracingMask" = "4294901760"
"EnableConsoleTracing" = "0"

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

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASMANCS]
"FileDirectory" = "%windir%\tracing"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "46 00 00 00 3C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASMANCS]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\e71addb81200eda8d727ff771dd477cd_RASAPI32]
"EnableFileTracing" = "0"

Proxy settings are disabled:

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

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

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
"AutoConfigURL"

Dropped PE files

MD5 File path
91c9ee5005ac6cb4ec79a3b039b4c8dfc:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Banner.dll
ec138e15734e89232ed5a0e5ee5944ecc:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\DialogEx.dll
50fdadda3e993688401f6f1108fabdb4c:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Inetc.dll
c13bf5eead03e5989d157d5ed66e20f4c:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\RC4dll.dll
00a0194c20ee912257df53bfe258ee4ac:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\System.dll
acbb8be17d02aa83713d58c8d216f15ec:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Unicode.dll

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):No processes have been created.
  2. Delete the original Trojan file.
  3. Delete or disinfect the following files created/modified by the Trojan:

    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\System.dll (23 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\delete.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\input.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Unicode.dll (13 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bg.png (2 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check-box.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\config.ini (591 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk2.png (8 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp.txt (715 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\4ZZNMJGQ\kuao34conf2[1].ini (715 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\jindutiao.png (3 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\DialogEx.dll (808 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk3.png (9 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check1.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk.png (5 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\uncheck1.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\RC4dll.dll (1601 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\finish.png (7 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\uncheck.png (966 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Banner.dll (8 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\yes.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\check.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\bk_bak.png (3616 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\change.png (1 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\Inetc.dll (804 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsx7DA8.tmp (11739 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\jieyabutton.png (10 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\tmp2.txt (715 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\nsn7DB9.tmp\no.png (1 bytes)

  4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  5. Reboot the computer.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name:
Product Name: Su Lang
Product Version: 1.0.0.1
Legal Copyright: (C)??????
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 1.0.0.1
File Description: Su Lang
Comments:
Language: English (United States)

Company Name: Product Name: Su Lang Product Version: 1.0.0.1 Legal Copyright: (C)?????? Legal Trademarks: Original Filename: Internal Name: File Version: 1.0.0.1 File Description: Su Lang Comments: Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text409625084250884.4977323ca7817859f8050e8f75236183e7de8
.rdata32768740476803.70288c3a1d271092e8086c1565dfde839ab8a
.data409602562205121.01614b37070216945156d234628d13558e720
.ndata29900870451200d41d8cd98f00b204e9800998ecf8427e
.rsrc100352027040271362.7869e95429fb56f8fe7db1e5ba758bb01e5b

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:


Total found: 1
790a558d6457087d6844ea1abcf46913

Network Activity

URLs

URL IP
hxxp://srfcount.sulang.com/conf.php122.225.107.91
hxxp://srfcount.sulang.com/tmp/conf/kuao34conf2.ini122.225.107.91
hxxp://srfcount.SuLang.com/tmp/conf/kuao34conf2.ini
hxxp://srfcount.SuLang.com/conf.php

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps