File name:

85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe

Full analysis: https://app.any.run/tasks/e9725cad-f233-433b-a77d-7ed38deda19f
Verdict: Malicious activity
Analysis date: January 25, 2025, 10:41:07
OS: Windows 10 Professional (build: 19045, 64 bit)
Tags:
brontok
Indicators:
MIME: application/vnd.microsoft.portable-executable
File info: PE32 executable (GUI) Intel 80386, for MS Windows, 2 sections
MD5:

1598018E92980E7B5B66607A379CA918

SHA1:

F3D71DE85BF2DD5D5EF05B59CA64B7D168ADBA20

SHA256:

85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975

SSDEEP:

98304:jAzf0y62Iee/P8oJ0Uq8v7jeSGoYSrL4KcBfQx+60jLwMr97q9xbZT6FeQ0UHYlN:k+1JJ7F0QM60jrgZT6Fd0dFZuZGePDa1

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

    • Changes the autorun value in the registry

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)
      • winlogon.exe (PID: 2736)
      • lsass.exe (PID: 5572)
      • inetinfo.exe (PID: 5320)
      • services.exe (PID: 6068)

    • Create files in the Startup directory

      • smss.exe (PID: 2216)

    • BRONTOK has been detected (SURICATA)

      • inetinfo.exe (PID: 5320)

  • SUSPICIOUS

    • Executable content was dropped or overwritten

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)

    • Starts itself from another location

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)

    • The process creates files with name similar to system file names

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)

    • Reads security settings of Internet Explorer

      • inetinfo.exe (PID: 5320)

    • Drops a file with a rarely used extension (PIF)

      • smss.exe (PID: 2216)

    • Checks Windows Trust Settings

      • inetinfo.exe (PID: 5320)

  • INFO

    • Creates files or folders in the user directory

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)
      • inetinfo.exe (PID: 5320)

    • Checks supported languages

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)
      • winlogon.exe (PID: 2736)
      • lsass.exe (PID: 5572)
      • inetinfo.exe (PID: 5320)
      • services.exe (PID: 6068)

    • Failed to create an executable file in Windows directory

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)
      • winlogon.exe (PID: 2736)
      • services.exe (PID: 6068)
      • lsass.exe (PID: 5572)
      • inetinfo.exe (PID: 5320)

    • Create files in a temporary directory

      • 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe (PID: 3364)
      • smss.exe (PID: 2216)
      • winlogon.exe (PID: 2736)
      • services.exe (PID: 6068)
      • lsass.exe (PID: 5572)
      • inetinfo.exe (PID: 5320)

    • Reads the computer name

      • inetinfo.exe (PID: 5320)

    • Checks proxy server information

      • inetinfo.exe (PID: 5320)

    • Manual execution by a user

      • mspaint.exe (PID: 5256)

    • Reads the software policy settings

      • inetinfo.exe (PID: 5320)

    • Reads the machine GUID from the registry

      • inetinfo.exe (PID: 5320)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Mew compressed Win32 Executable (88.8)
.exe | Win32 Executable (generic) (5.9)
.exe | Generic Win/DOS Executable (2.6)
.exe | DOS Executable Generic (2.6)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 0000:00:00 00:00:00
ImageFileCharacteristics: No relocs, Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 5.12
CodeSize: 512
InitializedDataSize: -
UninitializedDataSize: -
EntryPoint: 0x2f47b
OSVersion: 4
ImageVersion: -
SubsystemVersion: 4
Subsystem: Windows GUI
No data.
screenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
134
Monitored processes
14
Malicious processes
3
Suspicious processes
3

Behavior graph

Click at the process to see the details
start 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe explorer.exe no specs smss.exe winlogon.exe at.exe no specs conhost.exe no specs at.exe no specs conhost.exe no specs services.exe lsass.exe #BRONTOK inetinfo.exe rundll32.exe no specs mspaint.exe no specs svchost.exe

Process information

PID
CMD
Path
Indicators
Parent process
628C:\WINDOWS\System32\rundll32.exe C:\WINDOWS\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -EmbeddingC:\Windows\System32\rundll32.exe—svchost.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows host process (Rundll32)
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\rundll32.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\shcore.dll
c:\windows\system32\imagehlp.dll
2192C:\WINDOWS\system32\svchost.exe -k NetworkService -p -s DnscacheC:\Windows\System32\svchost.exe
services.exe
User:
NETWORK SERVICE
Company:
Microsoft Corporation
Integrity Level:
SYSTEM
Description:
Host Process for Windows Services
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\svchost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\sechost.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\bcrypt.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\combase.dll
c:\windows\system32\kernel.appcore.dll
2216C:\Users\admin\AppData\Local\smss.exeC:\Users\admin\AppData\Local\smss.exe
85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\smss.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvbvm60.dll
2736C:\Users\admin\AppData\Local\winlogon.exeC:\Users\admin\AppData\Local\winlogon.exe
smss.exe
User:
admin
Integrity Level:
MEDIUM
Modules
Images
c:\users\admin\appdata\local\winlogon.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvbvm60.dll
3172\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—at.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
3364"C:\Users\admin\Desktop\85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe" C:\Users\admin\Desktop\85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\desktop\85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvbvm60.dll
3848at 17:08 /every:M,T,W,Th,F,S,Su "C:\Users\admin\AppData\Roaming\Microsoft\Windows\Templates\Brengkolang.com"C:\Windows\SysWOW64\at.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Schedule service command line interface
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\at.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
3984at /delete /yC:\Windows\SysWOW64\at.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Schedule service command line interface
Exit code:
1
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\at.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcrt.dll
3988explorer.exeC:\Windows\SysWOW64\explorer.exe—85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Windows Explorer
Exit code:
1
Version:
10.0.19041.3758 (WinBuild.160101.0800)
Modules
Images
c:\windows\syswow64\explorer.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\syswow64\kernel32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\apphelp.dll
c:\windows\syswow64\msvcp_win.dll
4160\??\C:\WINDOWS\system32\conhost.exe 0xffffffff -ForceV1C:\Windows\System32\conhost.exe—at.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Console Window Host
Exit code:
0
Version:
10.0.19041.1 (WinBuild.160101.0800)
Modules
Images
c:\windows\system32\conhost.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcp_win.dll
c:\windows\system32\ucrtbase.dll
c:\windows\system32\shcore.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\combase.dll
c:\windows\system32\rpcrt4.dll
Total events
5 504
Read events
5 495
Write events
9
Delete events
0

Modification events

(PID) Process:(3364) 85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(2216) smss.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(2736) winlogon.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(6068) services.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(5572) lsass.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(5320) inetinfo.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:Tok-Cirrhatus
Value:
"C:\Users\admin\AppData\Local\smss.exe"
(PID) Process:(5320) inetinfo.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content
Operation:writeName:CachePrefix
Value:
(PID) Process:(5320) inetinfo.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(5320) inetinfo.exeKey:HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
Executable files
8
Suspicious files
3
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\Temp\~DF27C3C24D70C01D74.TMPbinary
MD5:21AD241025D25AB23409AF09F08AE339
SHA256:9A5863E376429AFAFE8D06DAC4089C337EA263BDEE7395E2B7DEAF52A52F31CD
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\services.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
2216smss.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Empty.pifexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\smss.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\lsass.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\csrss.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
2216smss.exeC:\Users\admin\AppData\Local\winlogon.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
2216smss.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Templates\Brengkolang.comexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
336485606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exeC:\Users\admin\AppData\Local\inetinfo.exeexecutable
MD5:1598018E92980E7B5B66607A379CA918
SHA256:85606F2E1D2C281310193BC7FA1395FDC09A6035DE5AC4862DA4E58F0619A975
2216smss.exeC:\Users\admin\AppData\Local\Temp\~DFC542258C3F40A402.TMPbinary
MD5:21AD241025D25AB23409AF09F08AE339
SHA256:9A5863E376429AFAFE8D06DAC4089C337EA263BDEE7395E2B7DEAF52A52F31CD
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
22
DNS requests
10
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
4712
MoUsoCoreWorker.exe
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
1480
RUXIMICS.exe
GET
200
23.48.23.156:80
http://crl.microsoft.com/pki/crl/products/MicRooCerAut2011_2011_03_22.crl
unknown
—
—
whitelisted
5320
inetinfo.exe
GET
301
76.223.84.192:80
http://www.geocities.com/sblsji1/IN12SDSDWVLML.txt
unknown
—
—
whitelisted
1480
RUXIMICS.exe
GET
200
23.37.237.227:80
http://www.microsoft.com/pkiops/crl/MicSecSerCA2011_2011-10-18.crl
unknown
—
—
whitelisted
—
—
GET
200
87.248.119.251:443
https://www.yahoo.com/
unknown
text
4 b
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
5892
svchost.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
4712
MoUsoCoreWorker.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
1480
RUXIMICS.exe
51.124.78.146:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
NL
whitelisted
—
—
2.16.204.157:443
www.bing.com
Akamai International B.V.
DE
whitelisted
4
System
192.168.100.255:138
—
—
—
whitelisted
1480
RUXIMICS.exe
23.48.23.156:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
4712
MoUsoCoreWorker.exe
23.48.23.156:80
crl.microsoft.com
Akamai International B.V.
DE
whitelisted
1480
RUXIMICS.exe
23.37.237.227:80
www.microsoft.com
AKAMAI-AS
DE
whitelisted
4712
MoUsoCoreWorker.exe
4.231.128.59:443
settings-win.data.microsoft.com
MICROSOFT-CORP-MSN-AS-BLOCK
IE
whitelisted

DNS requests

Domain
IP
Reputation
settings-win.data.microsoft.com
  • 51.124.78.146
  • 4.231.128.59
whitelisted
www.bing.com
  • 2.16.204.157
  • 2.16.204.154
  • 2.16.204.143
  • 2.16.204.152
  • 2.16.204.137
  • 2.16.204.136
  • 2.16.204.146
  • 2.16.204.138
  • 2.16.204.135
whitelisted
google.com
  • 142.250.184.206
whitelisted
crl.microsoft.com
  • 23.48.23.156
  • 23.48.23.143
whitelisted
www.microsoft.com
  • 23.37.237.227
whitelisted
www.geocities.com
  • 76.223.84.192
  • 13.248.158.7
whitelisted
www.yahoo.com
  • 87.248.119.252
  • 87.248.119.251
whitelisted
self.events.data.microsoft.com
  • 20.189.173.5
whitelisted

Threats

PID
Process
Class
Message
5320
inetinfo.exe
A Network Trojan was detected
ET MALWARE Brontok User-Agent Detected (Brontok.A3 Browser)
No debug info
Interactive malware hunting service ANY.RUN
© 2017-2025 ANY.RUN ALL RIGHTS RESERVED
ANY.RUN
Reports
85606f2e1d2c281310193bc7fa1395fdc09a6035de5ac4862da4e58f0619a975.exe