Malware analysis tax.exe Malicious activity | ANY.RUN

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File name:	tax.exe
Full analysis:	https://app.any.run/tasks/40688616-d0ea-4a70-9dd3-ef771e63f79c
Verdict:	Malicious activity
Analysis date:	June 19, 2019, 00:43:00
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME:	application/x-dosexec
File info:	PE32 executable (console) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:	D62E024DA0DDB3FC47DBC92794CBDCC1
SHA1:	F0B6581957E55F365F337E8557EA96BD8143366A
SHA256:	16608B2D2955D0649773008E048A0029B47A188E91384824BD9E5F8328C0B342
SSDEEP:	192:wpaAKtUyNscmQaEIZnJ+6mFy5E1ZHBvvoC:wpaAKtocmQa1JPmFiEPZw

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

Launch configuration

Task duration:: 60 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: none
MITM proxy:: off
Privacy:: Public submission
Fakenet option:: off
Route via Tor:: off
Autoconfirmation of UAC:: on
Network:: on

Software preset

Internet Explorer 8.0.7601.17514 undefined
Adobe Acrobat Reader DC MUI (15.023.20070)
Adobe Flash Player 26 ActiveX (26.0.0.131)
Adobe Flash Player 26 NPAPI (26.0.0.131)
Adobe Flash Player 26 PPAPI (26.0.0.131)
Adobe Refresh Manager (1.8.0)
CCleaner (5.35)
FileZilla Client 3.36.0 (3.36.0)
Google Chrome (73.0.3683.75)
Google Update Helper (1.3.33.23)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.6.1 (4.6.01055)
Microsoft Office Access MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Access Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Excel MUI (English) 2010 (14.0.6029.1000)
Microsoft Office OneNote MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Outlook MUI (English) 2010 (14.0.6029.1000)
Microsoft Office PowerPoint MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Professional 2010 (14.0.6029.1000)
Microsoft Office Proof (English) 2010 (14.0.6029.1000)
Microsoft Office Proof (French) 2010 (14.0.6029.1000)
Microsoft Office Proof (Spanish) 2010 (14.0.6029.1000)
Microsoft Office Proofing (English) 2010 (14.0.6029.1000)
Microsoft Office Publisher MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Shared Setup Metadata MUI (English) 2010 (14.0.6029.1000)
Microsoft Office Single Image 2010 (14.0.6029.1000)
Microsoft Office Word MUI (English) 2010 (14.0.6029.1000)
Microsoft Visual C++ 2008 Redistributable - x86 9.0.30729.6161 (9.0.30729.6161)
Microsoft Visual C++ 2010 x86 Redistributable - 10.0.40219 (10.0.40219)
Microsoft Visual C++ 2013 Redistributable (x86) - 12.0.30501 (12.0.30501.0)
Microsoft Visual C++ 2013 x86 Additional Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2013 x86 Minimum Runtime - 12.0.21005 (12.0.21005)
Microsoft Visual C++ 2017 Redistributable (x86) - 14.15.26706 (14.15.26706.0)
Microsoft Visual C++ 2017 x86 Additional Runtime - 14.15.26706 (14.15.26706)
Microsoft Visual C++ 2017 x86 Minimum Runtime - 14.15.26706 (14.15.26706)
Mozilla Firefox 65.0.2 (x86 en-US) (65.0.2)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
VLC media player (2.2.6)
WinRAR 5.60 (32-bit) (5.60.0)

Hotfixes

Client LanguagePack Package
Client Refresh LanguagePack Package
CodecPack Basic Package
Foundation Package
IE Troubleshooters Package
InternetExplorer Optional Package
KB2534111
KB2999226
KB976902
LocalPack AU Package
LocalPack CA Package
LocalPack GB Package
LocalPack US Package
LocalPack ZA Package
ProfessionalEdition
UltimateEdition

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MALICIOUS
- Connects to CnC server
  - tax.exe (PID: 1708)
SUSPICIOUS
- Starts Internet Explorer
  - tax.exe (PID: 1708)
INFO
- Creates files in the user directory
  - iexplore.exe (PID: 3260)
- Application launched itself
  - iexplore.exe (PID: 2272)
- Changes internet zones settings
  - iexplore.exe (PID: 2272)
- Reads internet explorer settings
  - iexplore.exe (PID: 3260)
- Reads Internet Cache Settings
  - iexplore.exe (PID: 3260)

Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

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No Malware configuration.

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TRiD

.exe	\|	Generic CIL Executable (.NET, Mono, etc.) (82.9)
.dll	\|	Win32 Dynamic Link Library (generic) (7.4)
.exe	\|	Win32 Executable (generic) (5.1)
.exe	\|	Generic Win/DOS Executable (2.2)
.exe	\|	DOS Executable Generic (2.2)

EXIF

EXE

AssemblyVersion:	1.0.0.0
ProductVersion:	1.0.0.0
ProductName:	hello
OriginalFileName:	keyboardsecure.exe
LegalCopyright:
InternalName:	keyboardsecure.exe
FileVersion:	1.0.0.0
FileDescription:	hello
CharacterSet:	Unicode
LanguageCode:	Neutral
FileSubtype:	-
ObjectFileType:	Executable application
FileOS:	Win32
FileFlags:	(none)
FileFlagsMask:	0x003f
ProductVersionNumber:	1.0.0.0
FileVersionNumber:	1.0.0.0
Subsystem:	Windows command line
SubsystemVersion:	4
ImageVersion:	-
OSVersion:	4
EntryPoint:	0x2eee
UninitializedDataSize:	-
InitializedDataSize:	6144
CodeSize:	4096
LinkerVersion:	11
PEType:	PE32
TimeStamp:	2019:06:14 10:00:28+02:00
MachineType:	Intel 386 or later, and compatibles

Summary

Architecture:	IMAGE_FILE_MACHINE_I386
Subsystem:	IMAGE_SUBSYSTEM_WINDOWS_CUI
Compilation Date:	14-Jun-2019 08:00:28
Debug artifacts:	D:\피싱메일\2. 실행파일\hello\obj\Debug\keyboardsecure.pdb
FileDescription:	hello
FileVersion:	1.0.0.0
InternalName:	keyboardsecure.exe
LegalCopyright:	-
OriginalFilename:	keyboardsecure.exe
ProductName:	hello
ProductVersion:	1.0.0.0
Assembly Version:	1.0.0.0

DOS Header

Magic number:	MZ
Bytes on last page of file:	0x0090
Pages in file:	0x0003
Relocations:	0x0000
Size of header:	0x0004
Min extra paragraphs:	0x0000
Max extra paragraphs:	0xFFFF
Initial SS value:	0x0000
Initial SP value:	0x00B8
Checksum:	0x0000
Initial IP value:	0x0000
Initial CS value:	0x0000
Overlay number:	0x0000
OEM identifier:	0x0000
OEM information:	0x0000
Address of NE header:	0x00000080

PE Headers

Signature:	PE
Machine:	IMAGE_FILE_MACHINE_I386
Number of sections:	3
Time date stamp:	14-Jun-2019 08:00:28
Pointer to Symbol Table:	0x00000000
Number of symbols:	0
Size of Optional Header:	0x00E0
Characteristics:	IMAGE_FILE_32BIT_MACHINE IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name	Virtual Address	Virtual Size	Raw Size	Charateristics	Entropy
.text	0x00002000	0x00000EF4	0x00001000	IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ	5.07832
.rsrc	0x00004000	0x00001430	0x00001600	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ	4.65893
.reloc	0x00006000	0x0000000C	0x00000200	IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ	0.0815394

Resources

Title	Entropy	Size	Codepage	Language	Type
1	5.00112	490	UNKNOWN	UNKNOWN	RT_MANIFEST
2	4.33895	2488	UNKNOWN	UNKNOWN	RT_ICON
3	4.93679	1128	UNKNOWN	UNKNOWN	RT_ICON
32512	2.50471	34	UNKNOWN	UNKNOWN	RT_GROUP_ICON

Imports


mscoree.dll

No data.

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All screenshots are available in the full report

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Total processes

Monitored processes

Malicious processes

Suspicious processes

Behavior graph

Click at the process to see the details

Process information

PID	CMD	Path	Parent process
1708	"C:\Users\admin\AppData\Local\Temp\tax.exe"	C:\Users\admin\AppData\Local\Temp\tax.exe	explorer.exe
User: admin Integrity Level: MEDIUM Description: hello Exit code: 0 Version: 1.0.0.0
2272	"C:\Program Files\Internet Explorer\iexplore.exe" http://taxreduction.sytes.net/taxreduction_second.o?F351A3lZ	C:\Program Files\Internet Explorer\iexplore.exe	tax.exe
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Version: 8.00.7600.16385 (win7_rtm.090713-1255)
3260	"C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:2272 CREDAT:71937	C:\Program Files\Internet Explorer\iexplore.exe	iexplore.exe
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Version: 8.00.7600.16385 (win7_rtm.090713-1255)

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Total events

423

Read events

346

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

Unknown types

Dropped files

PID	Process	Filename		Type
2272	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\H6QNMHE9\favicon[1].ico		—
		MD5:—	SHA256:—
2272	iexplore.exe	C:\Users\admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico		—
		MD5:—	SHA256:—
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\S6JAC5L7\taxreduction_second[1].o		—
		MD5:—	SHA256:—
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\S6JAC5L7\taxreduction_second[1].htm		html
		MD5:4FC8A69DD95CCC6DDDF418D2BDD65E59	SHA256:EEA955FD8A51A52806FA025779A5AA3F9D088BD3673AE4367A2A387E8451C147
2272	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\History\History.IE5\MSHist012019061920190620\index.dat		dat
		MD5:252858372B34C63BB8A99F83A67690C3	SHA256:F372E8366CE387863B1275653F9FAB68D5FC5967C6906D4E43FE567506D9DABC
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\N01AD3U1\btn1_2[1].png		image
		MD5:5D5C799F4032985866757D142B979F7B	SHA256:EB82C501034F8F8181FA8C8192704AD54B674061618154130F888F4FBA377C74
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\History\Low\History.IE5\MSHist012019061920190620\index.dat		dat
		MD5:8A8B92972649951CE4D500FF870C0624	SHA256:4324AE075C71390EC86749B596563F4D2B69BCEB655E75BFE45CB278F95C3076
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\History\Low\History.IE5\index.dat		dat
		MD5:DA2A4AA6B770996477FEFA730C345FA6	SHA256:91A9DE890D6D3538EA7884232EF9776FC1C288B3C268D8D179A9C60147C28BAA
2272	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\H6QNMHE9\favicon[1].png		image
		MD5:9FB559A691078558E77D6848202F6541	SHA256:6D8A01DC7647BC218D003B58FE04049E24A9359900B7E0CEBAE76EDF85B8B914
3260	iexplore.exe	C:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat		dat
		MD5:0ED0B60F47ECDA39F1B46393571C6831	SHA256:9BEEB35332FFDDC3EA9A81BA28C4276EF01E3B860823E8265C6C2DAA65C924DA

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

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HTTP(S) requests

TCP/UDP connections

DNS requests

Threats

HTTP requests

PID	Process	Method	HTTP Code	IP	URL	CN	Type	Size	Reputation
1708	tax.exe	POST	—	211.250.174.126:80	http://taxreduction.sytes.net/taxreduction_second_post.o	KR	—	—	malicious
3260	iexplore.exe	GET	200	211.250.174.126:80	http://taxreduction.sytes.net/img/bg1_2.png	KR	image	7.73 Kb	malicious
3260	iexplore.exe	GET	200	211.250.174.126:80	http://taxreduction.sytes.net/img/btn1_2.png	KR	image	2.03 Kb	malicious
3260	iexplore.exe	GET	200	211.250.174.126:80	http://taxreduction.sytes.net/img/bu1.png	KR	image	959 b	malicious
3260	iexplore.exe	GET	200	211.250.174.126:80	http://taxreduction.sytes.net/taxreduction_second.o?F351A3lZ	KR	html	3.82 Kb	malicious
2272	iexplore.exe	GET	200	204.79.197.200:80	http://www.bing.com/favicon.ico	US	image	237 b	whitelisted
2272	iexplore.exe	GET	404	211.250.174.126:80	http://taxreduction.sytes.net/favicon.ico	KR	binary	1 b	malicious

Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID	Process	IP	Domain	ASN	CN	Reputation
—	—	204.79.197.200:80	www.bing.com	Microsoft Corporation	US	whitelisted
1708	tax.exe	211.250.174.126:80	taxreduction.sytes.net	Korea Telecom	KR	malicious
3260	iexplore.exe	211.250.174.126:80	taxreduction.sytes.net	Korea Telecom	KR	malicious
2272	iexplore.exe	211.250.174.126:80	taxreduction.sytes.net	Korea Telecom	KR	malicious

DNS requests

Domain	IP	Reputation
taxreduction.sytes.net	211.250.174.126	malicious
www.bing.com	204.79.197.200 13.107.21.200	whitelisted

Threats

PID	Process	Class	Message
1708	tax.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain
3260	iexplore.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain
3260	iexplore.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain
3260	iexplore.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain
3260	iexplore.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain
2272	iexplore.exe	Potentially Bad Traffic	ET INFO DYNAMIC_DNS HTTP Request to a *.sytes.net Domain

1 ETPRO signatures available at the full report

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No debug info

General Info

tax.exe

D62E024DA0DDB3FC47DBC92794CBDCC1

F0B6581957E55F365F337E8557EA96BD8143366A

16608B2D2955D0649773008E048A0029B47A188E91384824BD9E5F8328C0B342

192:wpaAKtUyNscmQaEIZnJ+6mFy5E1ZHBvvoC:wpaAKtocmQa1JPmFiEPZw

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Connects to CnC server

SUSPICIOUS

Starts Internet Explorer

INFO

Creates files in the user directory

Application launched itself

Changes internet zones settings

Reads internet explorer settings

Reads Internet Cache Settings

Malware configuration

Static information

TRiD

EXIF

EXE

Summary

DOS Header

PE Headers

Sections

Resources

Imports

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Information

Information

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings