URL:

https://github.com/microsoft/terminal/files/14065211/Nezur.zip

Full analysis: https://app.any.run/tasks/f91a237c-74bd-402c-9ca5-24ba22cdf53b
Verdict: Malicious activity
Analysis date: February 11, 2024, 03:32:25
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
evasion
Indicators:
MD5:

A449076F07D5B767F9CAF38D9CA5181D

SHA1:

35E2E135A380AA13FB21D6A20FA43543138A9222

SHA256:

D3553FF2EA0B9559F1F51F2B616FD120FAE58D5DEAF9B9019ADEC6CD23941E1A

SSDEEP:

3:N8tEd46WYsRAXxwEfU7GN:2uu6RsdQN

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

    • Drops the executable file immediately after the start

      • Nezur.exe (PID: 448)

  • SUSPICIOUS

    • Reads security settings of Internet Explorer

      • WinRAR.exe (PID: 3500)
      • Nezur.exe (PID: 448)

    • The process executes VB scripts

      • cmd.exe (PID: 2320)

    • Uses ICACLS.EXE to modify access control lists

      • cmd.exe (PID: 2320)
      • cmd.exe (PID: 3616)

    • Runs shell command (SCRIPT)

      • wscript.exe (PID: 3544)

    • Reads the Internet Settings

      • wscript.exe (PID: 3544)
      • cmd.exe (PID: 2320)
      • Nezur.exe (PID: 448)

    • Starts CMD.EXE for commands execution

      • wscript.exe (PID: 3544)

    • Executing commands from a ".bat" file

      • wscript.exe (PID: 3544)

    • Reads settings of System Certificates

      • Nezur.exe (PID: 448)

    • Checks for external IP

      • Nezur.exe (PID: 448)

    • Checks Windows Trust Settings

      • Nezur.exe (PID: 448)

    • Connects to the server without a host name

      • Nezur.exe (PID: 448)

    • Executable content was dropped or overwritten

      • Nezur.exe (PID: 448)

  • INFO

    • Drops the executable file immediately after the start

      • WinRAR.exe (PID: 3500)

    • The process uses the downloaded file

      • WinRAR.exe (PID: 3500)
      • iexplore.exe (PID: 2472)

    • Modifies the phishing filter of IE

      • iexplore.exe (PID: 2472)

    • Executable content was dropped or overwritten

      • WinRAR.exe (PID: 3500)

    • Manual execution by a user

      • Nezur.exe (PID: 2072)
      • Nezur.exe (PID: 2100)
      • cmd.exe (PID: 2320)
      • Nezur.exe (PID: 3260)
      • notepad.exe (PID: 2308)

    • Checks supported languages

      • Nezur.exe (PID: 2100)
      • Nezur.exe (PID: 2908)
      • Nezur.exe (PID: 2072)
      • Nezur.exe (PID: 448)
      • Nezur.exe (PID: 3260)

    • Creates files or folders in the user directory

      • Nezur.exe (PID: 448)

    • Reads the computer name

      • Nezur.exe (PID: 448)

    • Reads the machine GUID from the registry

      • Nezur.exe (PID: 448)

    • Reads the software policy settings

      • Nezur.exe (PID: 448)

    • Checks proxy server information

      • Nezur.exe (PID: 448)

    • Creates files in the program directory

      • Nezur.exe (PID: 448)

    • Application launched itself

      • iexplore.exe (PID: 2472)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
69
Monitored processes
15
Malicious processes
3
Suspicious processes
1

Behavior graph

Click at the process to see the details
start iexplore.exe iexplore.exe winrar.exe nezur.exe no specs nezur.exe no specs nezur.exe cmd.exe no specs cacls.exe no specs wscript.exe no specs cmd.exe cacls.exe no specs nezur.exe notepad.exe no specs nezur.exe no specs schtasks.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
448Nezur.exe auto_load.txtC:\Users\admin\Desktop\Nezur\Nezur.exe
cmd.exe
User:
admin
Integrity Level:
HIGH
Exit code:
0
Modules
Images
c:\users\admin\desktop\nezur\nezur.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\users\admin\desktop\nezur\lua51.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
480"C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"C:\Windows\System32\cacls.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
HIGH
Description:
Control ACLs Program
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\cacls.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2072"C:\Users\admin\Desktop\Nezur\Nezur.exe" C:\Users\admin\Desktop\Nezur\Nezur.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221225786
Modules
Images
c:\users\admin\desktop\nezur\nezur.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\users\admin\desktop\nezur\lua51.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
2100"C:\Users\admin\Desktop\Nezur\Nezur.exe" C:\Users\admin\Desktop\Nezur\Nezur.exe
explorer.exe
User:
admin
Integrity Level:
HIGH
Exit code:
3221225786
Modules
Images
c:\users\admin\desktop\nezur\nezur.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\users\admin\desktop\nezur\lua51.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
2308"C:\Windows\system32\NOTEPAD.EXE" C:\Users\admin\Desktop\Nezur\README.txtC:\Windows\System32\notepad.exe—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Notepad
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\notepad.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
2320C:\Windows\system32\cmd.exe /c ""C:\Users\admin\Desktop\Nezur\start.bat" "C:\Windows\System32\cmd.exe—explorer.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:\windows\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
2472"C:\Program Files\Internet Explorer\iexplore.exe" "https://github.com/microsoft/terminal/files/14065211/Nezur.zip"C:\Program Files\Internet Explorer\iexplore.exe
explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Internet Explorer
Exit code:
1
Version:
11.00.9600.16428 (winblue_gdr.131013-1700)
Modules
Images
c:\program files\internet explorer\iexplore.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\api-ms-win-downlevel-advapi32-l1-1-0.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\iertutil.dll
2804"C:\Windows\system32\cacls.exe" "C:\Windows\system32\config\system"C:\Windows\System32\cacls.exe—cmd.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Control ACLs Program
Exit code:
5
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\cacls.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
2908"C:\Users\admin\AppData\Local\Temp\Rar$EXa3500.37771\Nezur.exe" C:\Users\admin\AppData\Local\Temp\Rar$EXa3500.37771\Nezur.exe—WinRAR.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221225786
Modules
Images
c:\users\admin\appdata\local\temp\rar$exa3500.37771\nezur.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\users\admin\appdata\local\temp\rar$exa3500.37771\lua51.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
3260"C:\Users\admin\Desktop\Nezur\Nezur.exe" C:\Users\admin\Desktop\Nezur\Nezur.exe—explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
3221225786
Modules
Images
c:\users\admin\desktop\nezur\nezur.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\users\admin\desktop\nezur\lua51.dll
c:\windows\system32\api-ms-win-core-synch-l1-2-0.dll
Total events
36 832
Read events
36 603
Write events
184
Delete events
45

Modification events

(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing
Operation:writeName:NTPDaysSinceLastAutoMigration
Value:
1
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing
Operation:writeName:NTPLastLaunchLowDateTime
Value:
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\TabbedBrowsing
Operation:writeName:NTPLastLaunchHighDateTime
Value:
31087770
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\UrlBlockManager
Operation:writeName:NextCheckForUpdateLowDateTime
Value:
76469034
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\UrlBlockManager
Operation:writeName:NextCheckForUpdateHighDateTime
Value:
31087771
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main
Operation:writeName:CompatibilityFlags
Value:
0
(PID) Process:(2472) iexplore.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
Executable files
6
Suspicious files
13
Text files
12
Unknown types
13

Dropped files

PID
Process
Filename
Type
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\50CD3D75D026C82E2E718570BD6F44D0_D222662A57BAA60D2F5EA0D2CC7B2F1Cbinary
MD5:0DBAACC5AF6AD66E35F0B7BEDD34F6C1
SHA256:FB449D4371F8713F9E9D18CC35F9FFEA9A5EE7C01F75FA66CC9B1CE51C6FEAAA
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\50CD3D75D026C82E2E718570BD6F44D0_D222662A57BAA60D2F5EA0D2CC7B2F1Cbinary
MD5:916E19D9AC0239ECE9B698F16D3A512B
SHA256:5358E8B739FC68BA08A7EBC642717B8DBAA2C02ACC08131DCB46C9CDD6806006
3348iexplore.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Cookies\Low\TF0JWWFH.txttext
MD5:C5418FE1555CC51CCF48FD2D182E6AE0
SHA256:F30846C4B4925DDFC65103DB48E4A08F807EC006251E94E489216B0984B153D0
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04binary
MD5:7F8FB4BE75362F6F39E793B29E4EE620
SHA256:C53D726C8513E331389BAD46CB7663FDC6283B747FBCD7AF19424F2825B2EC1E
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B398B80134F72209547439DB21AB308D_ADE4E4D3A3BCBCA5C39C54D362D88565binary
MD5:8FE65314F791E619C6227963093FF22B
SHA256:7785F1B9FB31B0C8E2EA64C29EB617C9BA97557111BC3668F53F35EE839050EA
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B398B80134F72209547439DB21AB308D_A4CF52CCA82D7458083F7280801A3A04binary
MD5:47484F8667C44200E4DA0F0E9C0D4659
SHA256:38C6BD6BC1E8EB32E777D4F64A883801BE16B469407A9D0C377B4436024EAE0A
3348iexplore.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157binary
MD5:016A1E848DA622BB6F5AEE9D7B1E97A4
SHA256:18078DB9EE8B069A87CAB3EFAF912463A2C48C233D29A479318DCD24CB3F30DE
3348iexplore.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\MFAQUS6V\Nezur[1].zipcompressed
MD5:2F5833175EAFC89DD0C23BFDD27A1D23
SHA256:62253C05DD989444FFCA0674969DF1E6553550441909CA3B602E90648842081D
3348iexplore.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Cookies\Low\5C0TP2RD.txttext
MD5:14D287F0D8FF701B367E13E38A1132D0
SHA256:224FA2EC3280656DD6EBFABB51586A93A7BFB4C550C6E2F89D5FADB1D57AA70B
3348iexplore.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\B6QGX7LP\Nezur.zip.f888hpp.partialcompressed
MD5:AF97DDA652B878779309C854DBB05475
SHA256:9B022527C62A75E4646DF18D77ACCEA72E30BBE6E35BE379F14DFF5E2951C922
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
16
TCP/UDP connections
24
DNS requests
9
Threats
2

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
3348
iexplore.exe
GET
304
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?c9f2b763ba05a2db
unknown
—
—
unknown
3348
iexplore.exe
GET
304
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?14266dff8470122f
unknown
—
—
unknown
3348
iexplore.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAfy81yHqHeveu%2FpR5k1Jb0%3D
unknown
binary
471 b
unknown
3348
iexplore.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBQrHR6YzPN2BNbByL0VoiTIBBMAOAQUCrwIKReMpTlteg7OM8cus%2B37w3oCEAzQqL7GMs%2FmReygqbCE%2Bxw%3D
unknown
binary
313 b
unknown
3348
iexplore.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAbY2QTVWENG9oovp1QifsQ%3D
unknown
binary
471 b
unknown
1080
svchost.exe
GET
200
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?c503292d7802e201
unknown
compressed
65.2 Kb
unknown
1080
svchost.exe
GET
304
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?1b8fee253118cbef
unknown
compressed
65.2 Kb
unknown
2472
iexplore.exe
GET
304
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?49cb245571b3d6d6
unknown
—
—
unknown
2472
iexplore.exe
GET
304
93.184.221.240:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?9aee5c2adfb08fdb
unknown
—
—
unknown
2472
iexplore.exe
GET
200
192.229.221.95:80
http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAJ0LqoXyo4hxxe7H%2Fz9DKA%3D
unknown
binary
471 b
unknown
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:137
—
—
—
whitelisted
3348
iexplore.exe
140.82.121.3:443
github.com
GITHUB
US
unknown
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown
4
System
192.168.100.255:138
—
—
—
whitelisted
3348
iexplore.exe
93.184.221.240:80
ctldl.windowsupdate.com
EDGECAST
GB
whitelisted
3348
iexplore.exe
192.229.221.95:80
ocsp.digicert.com
EDGECAST
US
whitelisted
3348
iexplore.exe
185.199.110.133:443
objects.githubusercontent.com
FASTLY
US
unknown
1080
svchost.exe
93.184.221.240:80
ctldl.windowsupdate.com
EDGECAST
GB
whitelisted
2472
iexplore.exe
152.199.19.161:443
iecvlist.microsoft.com
EDGECAST
US
whitelisted
2472
iexplore.exe
93.184.221.240:80
ctldl.windowsupdate.com
EDGECAST
GB
whitelisted

DNS requests

Domain
IP
Reputation
github.com
  • 140.82.121.3
shared
ctldl.windowsupdate.com
  • 93.184.221.240
whitelisted
ocsp.digicert.com
  • 192.229.221.95
whitelisted
objects.githubusercontent.com
  • 185.199.110.133
  • 185.199.111.133
  • 185.199.109.133
  • 185.199.108.133
shared
iecvlist.microsoft.com
  • 152.199.19.161
whitelisted
r20swj13mr.microsoft.com
  • 152.199.19.161
whitelisted
ip-api.com
  • 208.95.112.1
shared
www.microsoft.com
  • 88.221.125.143
whitelisted

Threats

PID
Process
Class
Message
448
Nezur.exe
Potential Corporate Privacy Violation
AV POLICY Internal Host Retrieving External IP Address (ip-api. com)
448
Nezur.exe
Device Retrieving External IP Address Detected
ET POLICY External IP Lookup ip-api.com
No debug info
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Reports
https://github.com/microsoft/terminal/files/14065211/Nezur.zip