Malware analysis http://ftp.yz.yamagata-u.ac.jp/pub/CTAN/systems/texlive/tlnet/install-tl-windows.exe Malicious activity

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URL:	http://ftp.yz.yamagata-u.ac.jp/pub/CTAN/systems/texlive/tlnet/install-tl-windows.exe
Full analysis:	https://app.any.run/tasks/06255610-02bf-4dbc-b516-862dd342a9ff
Verdict:	Malicious activity
Analysis date:	September 19, 2019, 12:00:43
OS:	Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:	opendir
Indicators:
MD5:	F8B1C6A6E9CBE76A156219C7E0F83EB0
SHA1:	671216CE0D944DC514BFEB057122C647219F4424
SHA256:	6C32F1B74911E6CA257C06260554EB7447E42D9FFFF93133871B4E9542AC8B79
SSDEEP:	3:N1KYnECEEIm/qGkrKW/o00KDgGRGSkrA:CYnnEET/qGkK0zkGRqrA

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:: 120 seconds
Heavy Evasion option:: off
Network geolocation:: off
Additional time used:: 60 seconds
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 (75.0.3770.100)
Google Update Helper (1.3.34.7)
Java 8 Update 92 (8.0.920.14)
Java Auto Updater (2.8.92.14)
Microsoft .NET Framework 4.7.2 (4.7.03062)
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++ 2015-2019 Redistributable (x86) - 14.21.27702 (14.21.27702.2)
Microsoft Visual C++ 2019 X86 Additional Runtime - 14.21.27702 (14.21.27702)
Microsoft Visual C++ 2019 X86 Minimum Runtime - 14.21.27702 (14.21.27702)
Mozilla Firefox 68.0.1 (x86 en-US) (68.0.1)
Notepad++ (32-bit x86) (7.5.1)
Opera 12.15 (12.15.1748)
Skype version 8.29 (8.29)
Update for Microsoft .NET Framework 4.7.2 (KB4087364) (1)
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
KB4019990
KB976902
LocalPack AU Package
LocalPack CA Package
LocalPack GB Package
LocalPack US Package
LocalPack ZA Package
ProfessionalEdition
UltimateEdition

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MALICIOUS
- Loads dropped or rewritten executable
  - perl.exe (PID: 2528)
  - install-tl-windows.exe (PID: 1856)
- Application was dropped or rewritten from another process
  - tar.exe (PID: 1512)
  - xz.exe (PID: 3192)
  - perl.exe (PID: 2528)
  - wget.exe (PID: 3652)
  - install-tl-windows.exe (PID: 1856)
  - tclkit.exe (PID: 3712)
  - wget.exe (PID: 3956)
  - xz.exe (PID: 2068)
  - wget.exe (PID: 2544)
  - ns5D75.tmp (PID: 2112)
SUSPICIOUS
- Starts CMD.EXE for commands execution
  - cmd.exe (PID: 2900)
  - ns5D75.tmp (PID: 2112)
  - perl.exe (PID: 2528)
- Executable content was dropped or overwritten
  - chrome.exe (PID: 2332)
  - chrome.exe (PID: 2792)
  - install-tl-windows.exe (PID: 1856)
- Starts application with an unusual extension
  - install-tl-windows.exe (PID: 1856)
INFO
- Reads the hosts file
  - chrome.exe (PID: 2332)
  - chrome.exe (PID: 2792)
- Dropped object may contain Bitcoin addresses
  - install-tl-windows.exe (PID: 1856)
- Application launched itself
  - chrome.exe (PID: 2792)
- Reads Internet Cache Settings
  - chrome.exe (PID: 2792)
- Creates files in the user directory
  - chrome.exe (PID: 2792)

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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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	Indicators	Parent process
2792	"C:\Program Files\Google\Chrome\Application\chrome.exe" "http://ftp.yz.yamagata-u.ac.jp/pub/CTAN/systems/texlive/tlnet/install-tl-windows.exe"	C:\Program Files\Google\Chrome\Application\chrome.exe		explorer.exe
User: admin Company: Google LLC Integrity Level: MEDIUM Description: Google Chrome Version: 75.0.3770.100
3592	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win32 --annotation=prod=Chrome --annotation=ver=75.0.3770.100 --initial-client-data=0x7c,0x80,0x84,0x78,0x88,0x6fd9a9d0,0x6fd9a9e0,0x6fd9a9ec	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: MEDIUM Description: Google Chrome Version: 75.0.3770.100
2820	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=watcher --main-thread-id=2796 --on-initialized-event-handle=312 --parent-handle=316 /prefetch:6	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: MEDIUM Description: Google Chrome Version: 75.0.3770.100
4008	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --gpu-preferences=KAAAAAAAAADgAAAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=6166223317441539846 --mojo-platform-channel-handle=1032 --ignored=" --type=renderer " /prefetch:2	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: LOW Description: Google Chrome Version: 75.0.3770.100
2332	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --lang=en-US --service-sandbox-type=network --service-request-channel-token=14266949305079669338 --mojo-platform-channel-handle=1552 /prefetch:8	C:\Program Files\Google\Chrome\Application\chrome.exe		chrome.exe
User: admin Company: Google LLC Integrity Level: MEDIUM Description: Google Chrome Version: 75.0.3770.100
3816	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --lang=en-US --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=1977201894380131286 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2236 /prefetch:1	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: LOW Description: Google Chrome Version: 75.0.3770.100
2672	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --lang=en-US --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=13502136594449709140 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2252 /prefetch:1	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: LOW Description: Google Chrome Version: 75.0.3770.100
3320	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --lang=en-US --extension-process --enable-offline-auto-reload --enable-offline-auto-reload-visible-only --device-scale-factor=1 --num-raster-threads=2 --enable-main-frame-before-activation --service-request-channel-token=14033215345836831485 --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2540 /prefetch:1	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: LOW Description: Google Chrome Exit code: 0 Version: 75.0.3770.100
3300	"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=1020,5678156902663964700,1986047999899398892,131072 --enable-features=PasswordImport --disable-gpu-sandbox --use-gl=disabled --gpu-preferences=KAAAAAAAAADgAAAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=4632728342083323797 --mojo-platform-channel-handle=3472 /prefetch:2	C:\Program Files\Google\Chrome\Application\chrome.exe	—	chrome.exe
User: admin Company: Google LLC Integrity Level: MEDIUM Description: Google Chrome Exit code: 0 Version: 75.0.3770.100
1856	"C:\Users\admin\Downloads\install-tl-windows.exe"	C:\Users\admin\Downloads\install-tl-windows.exe		chrome.exe
User: admin Integrity Level: MEDIUM

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Total events

1 347

Read events

1 296

Write events

Delete events

Modification events

No data

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Executable files

Suspicious files

Text files

1 736

Unknown types

Dropped files

PID	Process	Filename		Type
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\fd2962d3-5e19-4a0d-b15e-d4afb559dafe.tmp		—
		MD5:—	SHA256:—
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\000020.dbtmp		—
		MD5:—	SHA256:—
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\BudgetDatabase\LOG.old		text
		MD5:A519780ED0A2F4336DB4F5651D79C369	SHA256:DA5B71BD0075B55757BF757BF5F4D4A1DCBCF0762CDA5B31B28680963E068C75
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\EventDB\LOG.old		text
		MD5:3D551B6E929CF62F7AA66091E718704B	SHA256:1698A1B1BC3E86676392FB8BD4C712438302A5A2220503C08F290ED4B1790404
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.old~RF168bf9.TMP		text
		MD5:C4D6CBB269C626168A5D6D0D8CCE6C30	SHA256:B62CDBB758278A0C2E50593357390119441D8DE09428EB29027F3DFD1332E348
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\EventDB\LOG.old~RF168c47.TMP		text
		MD5:3D551B6E929CF62F7AA66091E718704B	SHA256:1698A1B1BC3E86676392FB8BD4C712438302A5A2220503C08F290ED4B1790404
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\LOG.old		text
		MD5:213AE3DA120D7862D60B5763B6C9D466	SHA256:5736534D6EE654C1BF1A8E79E73330AF58F622E8657285330D2C7189A55604F4
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Sync Data\LevelDB\LOG.old		text
		MD5:DC32343F45B01764B6267AD36548102A	SHA256:A250F5AD57D4BD58AAE92810D50278E3BE2DBF869F126A3A3519691BCDFC2075
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\LOG.old~RF168bf9.TMP		text
		MD5:213AE3DA120D7862D60B5763B6C9D466	SHA256:5736534D6EE654C1BF1A8E79E73330AF58F622E8657285330D2C7189A55604F4
2792	chrome.exe	C:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.old		text
		MD5:C4D6CBB269C626168A5D6D0D8CCE6C30	SHA256:B62CDBB758278A0C2E50593357390119441D8DE09428EB29027F3DFD1332E348

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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
2544	wget.exe	GET	—	192.17.3.223:80	http://ctan.math.illinois.edu/	US	—	—	unknown
2544	wget.exe	GET	302	5.35.249.60:80	http://mirror.ctan.org/	DE	html	295 b	whitelisted
3956	wget.exe	GET	200	192.17.3.223:80	http://ctan.math.illinois.edu/systems/texlive/tlnet/tlpkg/texlive.tlpdb.xz	US	xz	2.02 Mb	unknown
2544	wget.exe	GET	200	192.17.3.223:80	http://ctan.math.illinois.edu/	US	html	8.97 Kb	unknown

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Connections

PID	Process	IP	Domain	ASN	CN	Reputation
2332	chrome.exe	172.217.18.99:443	clientservices.googleapis.com	Google Inc.	US	whitelisted
2332	chrome.exe	172.217.23.131:443	ssl.gstatic.com	Google Inc.	US	whitelisted
2332	chrome.exe	172.217.16.195:443	www.gstatic.com	Google Inc.	US	whitelisted
2332	chrome.exe	172.217.16.206:443	sb-ssl.google.com	Google Inc.	US	whitelisted
2332	chrome.exe	172.217.23.141:443	accounts.google.com	Google Inc.	US	whitelisted
2332	chrome.exe	216.58.207.36:443	www.google.com	Google Inc.	US	whitelisted
2544	wget.exe	5.35.249.60:80	mirror.ctan.org	Host Europe GmbH	DE	unknown
2332	chrome.exe	216.58.205.238:443	clients1.google.com	Google Inc.	US	whitelisted
3956	wget.exe	192.17.3.223:80	ctan.math.illinois.edu	University of Illinois	US	unknown
2332	chrome.exe	133.24.248.17:80	ftp.yz.yamagata-u.ac.jp	Yamagata University	JP	suspicious

DNS requests

Domain	IP	Reputation
clientservices.googleapis.com	172.217.18.99	whitelisted
ftp.yz.yamagata-u.ac.jp	133.24.248.17 133.24.248.19 133.24.248.16 133.24.248.18	suspicious
accounts.google.com	172.217.23.141	shared
www.google.com	216.58.207.36	whitelisted
ssl.gstatic.com	172.217.23.131	whitelisted
sb-ssl.google.com	172.217.16.206	whitelisted
mirror.ctan.org	5.35.249.60	unknown
ctan.math.illinois.edu	192.17.3.223	unknown
www.gstatic.com	172.217.16.195	whitelisted
clients1.google.com	216.58.205.238	whitelisted

Threats

PID	Process	Class	Message
2332	chrome.exe	Potential Corporate Privacy Violation	ET POLICY PE EXE or DLL Windows file download HTTP

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No debug info

General Info

http://ftp.yz.yamagata-u.ac.jp/pub/CTAN/systems/texlive/tlnet/install-tl-windows.exe

F8B1C6A6E9CBE76A156219C7E0F83EB0

671216CE0D944DC514BFEB057122C647219F4424

6C32F1B74911E6CA257C06260554EB7447E42D9FFFF93133871B4E9542AC8B79

3:N1KYnECEEIm/qGkrKW/o00KDgGRGSkrA:CYnnEET/qGkK0zkGRqrA

Software environment set and analysis options

Launch configuration

Software preset

Hotfixes

Behavior activities

MALICIOUS

Loads dropped or rewritten executable

Application was dropped or rewritten from another process

SUSPICIOUS

Starts CMD.EXE for commands execution

Executable content was dropped or overwritten

Starts application with an unusual extension

INFO

Reads the hosts file

Dropped object may contain Bitcoin addresses

Application launched itself

Reads Internet Cache Settings

Creates files in the user directory

Malware configuration

Static information

Video and screenshots

Processes

Behavior graph

Specs description

Process information

Information

Information

Information

Information

Information

Information

Information

Information

Information

Information

Registry activity

Modification events

Files activity

Dropped files

Network activity

HTTP requests

Connections

DNS requests

Threats

Debug output strings