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Sun, 03/26/2017 - 03:02

Trojan.GenericKD.4587730_c5cd7edfaa

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.GenericKD.4587730 (B) (Emsisoft), Trojan.GenericKD.4587730 (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
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

Summary

MD5: c5cd7edfaa76e5f481e1dcecbd0df4ee

SHA1: 39576565fdfa0c4834260b9b30798b67e80613e1

SHA256: c07febe15696e6289d1db8071f8a952811c511f52ef2875280e79b0aad63379e

SSDeep: 24576:qM/JGorGr8N0Z9eVqaOiWFECll8T5nkXYhZ20w6c8UWzRIMaA2hWfRpMTeHUxGnI:wSrVT5wEzxc8UqR92geGcU7uhv

Size: 2508288 bytes

File type: EXE

Platform: WIN32

Entropy: Not Packed

PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6

Company: no certificate found

Created at: 2017-03-13 11:24:59

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:2956
mTR6hbOp3O.exe:2696

Mutexes

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

File activity

The process %original file name%.exe:2956 makes changes in the file system.


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

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\mTR6hbOp3O.exe (115422 bytes)

The process mTR6hbOp3O.exe:2696 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:2956 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\CasterDate]
"date" = "25/03/2017"

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

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASAPI32]
"EnableConsoleTracing" = "0"
"ConsoleTracingMask" = "4294901760"
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASMANCS]
"EnableConsoleTracing" = "0"
"FileTracingMask" = "4294901760"
"MaxFileSize" = "1048576"
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASAPI32]
"EnableFileTracing" = "0"

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

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASMANCS]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASAPI32]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASMANCS]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\c5cd7edfaa76e5f481e1dcecbd0df4ee_RASAPI32]
"FileTracingMask" = "4294901760"

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 mTR6hbOp3O.exe:2696 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASMANCS]
"EnableFileTracing" = "0"
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASAPI32]
"EnableConsoleTracing" = "0"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASMANCS]
"FileDirectory" = "%windir%\tracing"
"ConsoleTracingMask" = "4294901760"
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASAPI32]
"MaxFileSize" = "1048576"
"EnableFileTracing" = "0"
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASMANCS]
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\mTR6hbOp3O_RASAPI32]
"FileDirectory" = "%windir%\tracing"

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]
"KNU8YI62O5" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\mTR6hbOp3O.exe"

Dropped PE files

MD5 File path
0ba28eb22e8e77f433aa9dcf48092580c:\Users\"%CurrentUserName%"\AppData\Local\Temp\mTR6hbOp3O.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):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\mTR6hbOp3O.exe (115422 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]
    "KNU8YI62O5" = "C:\Users\"%CurrentUserName%"\AppData\Local\Temp\mTR6hbOp3O.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: F9A
Product Name: F9AM69ES
Product Version: 0.1.1.3
Legal Copyright: Copyright (c) 9955
Legal Trademarks:
Original Filename: Palace22.exe
Internal Name: Palace22.exe
File Version: 0.1.1.3
File Description: F
Comments: F9AM69ESO
Language: English (United States)

Company Name: F9A Product Name: F9AM69ES Product Version: 0.1.1.3 Legal Copyright: Copyright (c) 9955 Legal Trademarks: Original Filename: Palace22.exe Internal Name: Palace22.exe File Version: 0.1.1.3 File Description: F Comments: F9AM69ESO Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text8192249684024970244.167482afda67ed7c302738ae18fb6a1e925a0
.rsrc25067529848102403.611b898600d2e96bb1e93de9bde5ad4e389
.reloc2523136125120.070639358cec7292662a02b50f706cdd027ad0

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL IP
hxxp://asiasoftwaretools.com/get/3/wizzcaster_v2.exe94.23.252.37
hxxp://wizzcaster.com/api/v5/config94.23.44.92
hxxp://wizzcaster.com/api/v5/link94.23.44.92
dns.msftncsi.com131.107.255.255

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps