URL:

http://fortrancalculus.info/download/curvfit-install.exe

Full analysis: https://app.any.run/tasks/e45fac89-2096-4783-a9a4-6803afd9e8d1
Verdict: Malicious activity
Threats:

A loader is malicious software that infiltrates devices to deliver malicious payloads. This malware is capable of infecting victims’ computers, analyzing their system information, and installing other types of threats, such as trojans or stealers. Criminals usually deliver loaders through phishing emails and links by relying on social engineering to trick users into downloading and running their executables. Loaders employ advanced evasion and persistence tactics to avoid detection.

Malware Trends Tracker     >>>
Analysis date: July 18, 2019, 12:40:18
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
loader
Indicators:
MD5:

F6918C3DB809F99CF1E78B7D646CE094

SHA1:

A792F5DE0E13F77F9D26744ED0302AC0A31498BE

SHA256:

D7A9791A22389DEF9217D16EEBD76675CEA5755266B5EC2387979B68388C7931

SSDEEP:

3:N1KY3UWGWKXm/firN:CY3UWTtY

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.

  • MALICIOUS

    • Application was dropped or rewritten from another process

      • curvfit-install.exe (PID: 3196)
      • curvfit-install.exe (PID: 3184)
      • CurvFit.exe (PID: 2708)
      • DOSBox.exe (PID: 2544)
      • CurvFit Class.exe (PID: 1704)
      • ODE-XYplots.exe (PID: 1648)

    • Downloads executable files from the Internet

      • chrome.exe (PID: 2948)

    • Registers / Runs the DLL via REGSVR32.EXE

      • curvfit-install.tmp (PID: 3820)

    • Loads dropped or rewritten executable

      • regsvr32.exe (PID: 3208)
      • regsvr32.exe (PID: 2364)
      • regsvr32.exe (PID: 2064)
      • regsvr32.exe (PID: 2192)
      • CurvFit.exe (PID: 2708)
      • DOSBox.exe (PID: 2544)
      • ODE-XYplots.exe (PID: 1648)

    • Changes settings of System certificates

      • certutil.exe (PID: 3512)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • chrome.exe (PID: 2948)
      • curvfit-install.exe (PID: 3196)
      • curvfit-install.tmp (PID: 3820)
      • chrome.exe (PID: 3860)
      • curvfit-install.exe (PID: 3184)
      • cmd.exe (PID: 3620)

    • Creates files in the Windows directory

      • curvfit-install.tmp (PID: 3820)
      • certutil.exe (PID: 3512)

    • Modifies the open verb of a shell class

      • curvfit-install.tmp (PID: 3820)

    • Removes files from Windows directory

      • certutil.exe (PID: 3512)

    • Starts Microsoft Office Application

      • curvfit-install.tmp (PID: 1336)

    • Starts CMD.EXE for commands execution

      • CurvFit.exe (PID: 2708)
      • cmd.exe (PID: 1236)
      • cmd.exe (PID: 3620)

    • Uses ATTRIB.EXE to modify file attributes

      • cmd.exe (PID: 3620)

    • Application launched itself

      • cmd.exe (PID: 1236)
      • cmd.exe (PID: 3620)

    • Uses REG.EXE to modify Windows registry

      • cmd.exe (PID: 1864)
      • cmd.exe (PID: 3620)
      • cmd.exe (PID: 2316)

    • Creates files in the user directory

      • notepad++.exe (PID: 2472)

  • INFO

    • Reads Internet Cache Settings

      • chrome.exe (PID: 3860)

    • Application launched itself

      • chrome.exe (PID: 3860)

    • Application was dropped or rewritten from another process

      • curvfit-install.tmp (PID: 1336)
      • curvfit-install.tmp (PID: 3820)

    • Creates files in the program directory

      • curvfit-install.tmp (PID: 3820)

    • Loads dropped or rewritten executable

      • curvfit-install.tmp (PID: 3820)

    • Reads Microsoft Office registry keys

      • WINWORD.EXE (PID: 2160)

    • Manual execution by user

      • CurvFit.exe (PID: 2708)

    • Creates files in the user directory

      • WINWORD.EXE (PID: 2160)

    • Creates a software uninstall entry

      • curvfit-install.tmp (PID: 3820)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
92
Monitored processes
48
Malicious processes
9
Suspicious processes
1

Behavior graph

Click at the process to see the details
drop and start start drop and start drop and start chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs chrome.exe chrome.exe no specs chrome.exe no specs chrome.exe no specs curvfit-install.exe curvfit-install.tmp no specs curvfit-install.exe curvfit-install.tmp chrome.exe no specs regsvr32.exe no specs regsvr32.exe no specs regsvr32.exe no specs regsvr32.exe no specs certutil.exe no specs winword.exe no specs notepad.exe no specs notepad.exe no specs curvfit class.exe no specs chrome.exe no specs chrome.exe no specs curvfit.exe no specs cmd.exe no specs cmd.exe no specs cmd.exe no specs timeout.exe no specs cmd.exe mode.com no specs cmd.exe no specs cmd.exe no specs attrib.exe no specs timeout.exe no specs dosbox.exe no specs attrib.exe no specs timeout.exe no specs cmd.exe no specs reg.exe no specs reg.exe no specs reg.exe no specs cmd.exe no specs reg.exe no specs ode-xyplots.exe no specs notepad++.exe gup.exe timeout.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
456"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=984,8956427466426825137,6367798834228197110,131072 --enable-features=PasswordImport --gpu-preferences=KAAAAAAAAADgAAAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=7242088427700047681 --mojo-platform-channel-handle=996 --ignored=" --type=renderer " /prefetch:2C:\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
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
920attrib -h DOSvcpi.bat C:\Windows\system32\attrib.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Attribute Utility
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\attrib.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ulib.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\advapi32.dll
1236"C:\Windows\System32\cmd.exe" /C C:\od-tools\CurvFit\run-FitW.bat ex6.1 demos exitC:\Windows\System32\cmd.exe—CurvFit.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
Modules
Images
c:\windows\system32\cmd.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
1336"C:\Users\admin\AppData\Local\Temp\is-2P0MT.tmp\curvfit-install.tmp" /SL5="$60138,7379946,52736,C:\Users\admin\Downloads\curvfit-install.exe" C:\Users\admin\AppData\Local\Temp\is-2P0MT.tmp\curvfit-install.tmp—curvfit-install.exe
User:
admin
Integrity Level:
MEDIUM
Description:
Setup/Uninstall
Exit code:
0
Version:
51.52.0.0
Modules
Images
c:\users\admin\appdata\local\temp\is-2p0mt.tmp\curvfit-install.tmp
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\oleaut32.dll
1372"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --field-trial-handle=984,8956427466426825137,6367798834228197110,131072 --enable-features=PasswordImport --disable-gpu-sandbox --use-gl=disabled --gpu-preferences=KAAAAAAAAADgAAAgAQAAAAAAAAAAAGAAAAAAAAAAAAAIAAAAAAAAACgAAAAEAAAAIAAAAAAAAAAoAAAAAAAAADAAAAAAAAAAOAAAAAAAAAAQAAAAAAAAAAAAAAAFAAAAEAAAAAAAAAAAAAAABgAAABAAAAAAAAAAAQAAAAUAAAAQAAAAAAAAAAEAAAAGAAAA --service-request-channel-token=7994778259268278063 --mojo-platform-channel-handle=3772 /prefetch:2C:\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
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
1376mode 80, 100C:\Windows\system32\mode.com—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
DOS Device MODE Utility
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\mode.com
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\ulib.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
1476C:\Windows\system32\cmd.exe /c verC:\Windows\system32\cmd.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Command Processor
Exit code:
0
Version:
6.1.7601.17514 (win7sp1_rtm.101119-1850)
Modules
Images
c:\windows\system32\cmd.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\winbrand.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
1648"C:\od-tools\ODE-XYplots.exe" ~4plots.plt ~CurvFit.outC:\od-tools\ODE-XYplots.exe—cmd.exe
User:
admin
Company:
Optimal Designs Enterprise
Integrity Level:
MEDIUM
Description:
XYplot files in Windows for printing. Also allows one to do zero in on just part of plot, change colors, etc.
Exit code:
0
Version:
3.01
Modules
Images
c:\od-tools\ode-xyplots.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvbvm60.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
1688"C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --field-trial-handle=984,8956427466426825137,6367798834228197110,131072 --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=3626623564183702473 --renderer-client-id=4 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=2320 /prefetch:1C:\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
Modules
Images
c:\program files\google\chrome\application\chrome.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\program files\google\chrome\application\75.0.3770.100\chrome_elf.dll
c:\windows\system32\version.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\shell32.dll
c:\windows\system32\shlwapi.dll
c:\windows\system32\gdi32.dll
1704"c:\od-tools\CurvFit\CurvFit Class.exe" /openLFc:\od-tools\CurvFit\CurvFit Class.exe—curvfit-install.tmp
User:
admin
Company:
Irfan Skiljan
Integrity Level:
MEDIUM
Description:
Slideshow PlugIn for IrfanView
Exit code:
0
Version:
4.52
Modules
Images
c:\od-tools\curvfit\curvfit class.exe
c:\systemroot\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\msvfw32.dll
Total events
3 149
Read events
2 424
Write events
697
Delete events
28

Modification events

(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:failed_count
Value:
0
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
2
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\ThirdParty
Operation:writeName:StatusCodes
Value:
01000000
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BLBeacon
Operation:writeName:state
Value:
1
(PID) Process:(3308) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:writeName:3860-13207927233855125
Value:
259
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Update\ClientState\{8A69D345-D564-463c-AFF1-A69D9E530F96}
Operation:writeName:dr
Value:
1
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome
Operation:writeName:UsageStatsInSample
Value:
0
(PID) Process:(3860) chrome.exeKey:HKEY_CURRENT_USER\Software\Google\Chrome\BrowserExitCodes
Operation:delete valueName:1512-13197841398593750
Value:
0
(PID) Process:(3860) chrome.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Google\Update\ClientStateMedium\{8A69D345-D564-463C-AFF1-A69D9E530F96}
Operation:writeName:usagestats
Value:
0
Executable files
26
Suspicious files
30
Text files
207
Unknown types
11

Dropped files

PID
Process
Filename
Type
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\421e0645-d249-4f79-9e41-af0164c14353.tmp —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\000020.dbtmp —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\AvailabilityDB\LOG.old —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\AvailabilityDB\LOG.old~RFdf4d0.TMP —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\shared_proto_db\LOG.old —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.oldtext
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Site Characteristics Database\LOG.old~RFdf398.TMPtext
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\ShaderCache\GPUCache\data_1 —
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\data_reduction_proxy_leveldb\LOG.oldtext
MD5:—
SHA256:—
3860chrome.exeC:\Users\admin\AppData\Local\Google\Chrome\User Data\Default\Feature Engagement Tracker\EventDB\LOG.oldtext
MD5:—
SHA256:—
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
3
TCP/UDP connections
15
DNS requests
12
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2948
chrome.exe
GET
301
173.254.28.170:80
http://fortrancalculus.info/download/curvfit-install.exe
US
html
329 b
unknown
2948
chrome.exe
GET
200
192.249.121.20:80
http://goal-driven.net/download/curvfit-install.exe
US
executable
7.28 Mb
suspicious
—
—
GET
200
95.101.72.176:80
http://isrg.trustid.ocsp.identrust.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRv9GhNQxLSSGKBnMArPUcsHYovpgQUxKexpHsscfrb4UuQdf%2FEFWCFiRACEAoBQUIAAAFThXNqC4Xspwg%3D
unknown
der
1.36 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2948
chrome.exe
172.217.22.35:443
clientservices.googleapis.com
Google Inc.
US
whitelisted
2948
chrome.exe
216.58.207.78:443
sb-ssl.google.com
Google Inc.
US
whitelisted
—
—
172.217.22.78:443
clients1.google.com
Google Inc.
US
whitelisted
—
—
95.101.72.176:80
isrg.trustid.ocsp.identrust.com
Akamai International B.V.
—
whitelisted
2284
gup.exe
37.59.28.236:443
notepad-plus-plus.org
OVH SAS
FR
whitelisted
2948
chrome.exe
172.217.16.195:443
www.gstatic.com
Google Inc.
US
whitelisted
2948
chrome.exe
172.217.22.106:443
safebrowsing.googleapis.com
Google Inc.
US
whitelisted
2948
chrome.exe
173.254.28.170:80
fortrancalculus.info
Unified Layer
US
unknown
2948
chrome.exe
216.58.210.4:443
www.google.com
Google Inc.
US
whitelisted
2948
chrome.exe
192.249.121.20:80
goal-driven.net
InMotion Hosting, Inc.
US
suspicious

DNS requests

Domain
IP
Reputation
fortrancalculus.info
  • 173.254.28.170
unknown
clientservices.googleapis.com
  • 172.217.22.35
whitelisted
accounts.google.com
  • 216.58.207.45
shared
goal-driven.net
  • 192.249.121.20
suspicious
www.google.com
  • 216.58.210.4
malicious
sb-ssl.google.com
  • 216.58.207.78
whitelisted
ssl.gstatic.com
  • 172.217.22.35
whitelisted
www.gstatic.com
  • 172.217.16.195
whitelisted
safebrowsing.googleapis.com
  • 172.217.22.106
whitelisted
clients1.google.com
  • 172.217.22.78
whitelisted

Threats

PID
Process
Class
Message
2948
chrome.exe
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
Process
Message
notepad++.exe
VerifyLibrary: certificate revocation checking is disabled
notepad++.exe
VerifyLibrary: certificate revocation checking is disabled
notepad++.exe
42C4C5846BB675C74E2B2C90C69AB44366401093
Interactive malware hunting service ANY.RUN
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Reports
http://fortrancalculus.info/download/curvfit-install.exe