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File name:

C:\Users\admin\AppData\Roaming\smss.exe

Full analysis: https://app.any.run/tasks/c66ede15-2cef-4fcd-8f03-dae2393825bf
Verdict: Malicious activity
Analysis date: May 21, 2022, 06:53:47
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

1140A72BA70A901753D21507D78CE372

SHA1:

BDD606738E607A0A63B76EDFE9DB3CB11EAAA332

SHA256:

DD90CDC8B50BCE72055C1E49F49D3A48FAE39E7E031807A797F0EDFD7F52103B

SSDEEP:

1536:qI+GQ2irzyDpNS5wpOk3JCK6pFoFXG6fOpd/9nEh9TGeJ+R:PQOQwpOk5CK62O/9ESeJ+

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

    • Loads the Task Scheduler COM API

      • schtasks.exe (PID: 1532)
      • schtasks.exe (PID: 2756)
      • schtasks.exe (PID: 2732)
      • schtasks.exe (PID: 3252)
      • schtasks.exe (PID: 2108)
      • schtasks.exe (PID: 1204)

    • Uses Task Scheduler to run other applications

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)
      • smss.exe (PID: 3408)

    • Drops executable file immediately after starts

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)

    • Writes to a start menu file

      • smss.exe (PID: 1900)

    • Changes the autorun value in the registry

      • smss.exe (PID: 1900)

  • SUSPICIOUS

    • Checks supported languages

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)
      • smss.exe (PID: 3408)

    • Reads the computer name

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)
      • smss.exe (PID: 3408)

    • Uses TASKKILL.EXE to kill process

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)
      • smss.exe (PID: 3408)

    • Executable content was dropped or overwritten

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)

    • Creates files in the user directory

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)

    • Starts itself from another location

      • smss.exe (PID: 628)

    • Drops a file with a compile date too recent

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)

    • Executed via Task Scheduler

      • smss.exe (PID: 3408)

    • Reads Environment values

      • smss.exe (PID: 1900)

  • INFO

    • Checks supported languages

      • TASKKILL.exe (PID: 2108)
      • TASKKILL.exe (PID: 3204)
      • schtasks.exe (PID: 1532)
      • schtasks.exe (PID: 2756)
      • TASKKILL.exe (PID: 3000)
      • TASKKILL.exe (PID: 3052)
      • schtasks.exe (PID: 3252)
      • schtasks.exe (PID: 2732)
      • TASKKILL.exe (PID: 2388)
      • schtasks.exe (PID: 2108)
      • TASKKILL.exe (PID: 2368)
      • schtasks.exe (PID: 1204)

    • Reads the computer name

      • TASKKILL.exe (PID: 2108)
      • TASKKILL.exe (PID: 3204)
      • schtasks.exe (PID: 1532)
      • schtasks.exe (PID: 2756)
      • TASKKILL.exe (PID: 3000)
      • TASKKILL.exe (PID: 3052)
      • schtasks.exe (PID: 3252)
      • schtasks.exe (PID: 2732)
      • TASKKILL.exe (PID: 2388)
      • TASKKILL.exe (PID: 2368)
      • schtasks.exe (PID: 2108)
      • schtasks.exe (PID: 1204)

    • Dropped object may contain Bitcoin addresses

      • smss.exe (PID: 628)
      • smss.exe (PID: 1900)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Generic CIL Executable (.NET, Mono, etc.) (56.7)
.exe | Win64 Executable (generic) (21.3)
.scr | Windows screen saver (10.1)
.dll | Win32 Dynamic Link Library (generic) (5)
.exe | Win32 Executable (generic) (3.4)

EXIF

EXE

Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0x14e8e
UninitializedDataSize: -
InitializedDataSize: 1536
CodeSize: 77824
LinkerVersion: 8
PEType: PE32
TimeStamp: 2022:01:14 20:59:59+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 14-Jan-2022 19:59:59

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-Jan-2022 19:59:59
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
0x00012E94
0x00013000
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.75857
.rsrc
0x00016000
0x00000240
0x00000400
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.97233
.reloc
0x00018000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.10191

Resources

Title
Entropy
Size
Codepage
Language
Type
1
4.96801
487
Latin 1 / Western European
UNKNOWN
RT_MANIFEST

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
60
Monitored processes
15
Malicious processes
3
Suspicious processes
0

Behavior graph

Click at the process to see the details
drop and start start smss.exe taskkill.exe no specs taskkill.exe no specs schtasks.exe no specs schtasks.exe no specs smss.exe taskkill.exe no specs taskkill.exe no specs schtasks.exe no specs schtasks.exe no specs smss.exe no specs taskkill.exe no specs taskkill.exe no specs schtasks.exe no specs schtasks.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
628"C:\Users\admin\AppData\Local\Temp\smss.exe" C:\Users\admin\AppData\Local\Temp\smss.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\smss.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.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\microsoft.net\framework\v4.0.30319\mscoreei.dll
2108TASKKILL /F /IM wscript.exeC:\Windows\system32\TASKKILL.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\version.dll
c:\windows\system32\user32.dll
3204TASKKILL /F /IM cmd.exeC:\Windows\system32\TASKKILL.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\sechost.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\version.dll
c:\windows\system32\user32.dll
1532schtasks /Delete /tn NYAN /FC:\Windows\system32\schtasks.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\schtasks.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\usp10.dll
2756schtasks /create /tn NYAN /tr "C:\Users\admin\AppData\Local\Temp\smss.exe" /sc minute /mo 1C:\Windows\system32\schtasks.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Exit code:
0
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\schtasks.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\user32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\ole32.dll
1900"C:\Users\admin\AppData\Roaming\smss.exe" C:\Users\admin\AppData\Roaming\smss.exe
smss.exe
User:
admin
Integrity Level:
MEDIUM
Modules
Images
c:\users\admin\appdata\roaming\smss.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\mscoree.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\shlwapi.dll
c:\windows\system32\rpcrt4.dll
3000TASKKILL /F /IM wscript.exeC:\Windows\system32\TASKKILL.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\taskkill.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\version.dll
c:\windows\system32\user32.dll
3052TASKKILL /F /IM cmd.exeC:\Windows\system32\TASKKILL.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Terminates Processes
Exit code:
128
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\taskkill.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\advapi32.dll
c:\windows\system32\rpcrt4.dll
c:\windows\system32\version.dll
c:\windows\system32\user32.dll
3252schtasks /Delete /tn NYAN /FC:\Windows\system32\schtasks.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Exit code:
1
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\schtasks.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\user32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\ole32.dll
c:\windows\system32\usp10.dll
2732schtasks /create /tn NYAN /tr "C:\Users\admin\AppData\Roaming\smss.exe" /sc minute /mo 1C:\Windows\system32\schtasks.exe—smss.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Manages scheduled tasks
Version:
6.1.7600.16385 (win7_rtm.090713-1255)
Modules
Images
c:\windows\system32\schtasks.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.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
c:\windows\system32\ole32.dll
Total events
1 823
Read events
1 762
Write events
61
Delete events
0

Modification events

(PID) Process:(628) smss.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(628) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
(PID) Process:(628) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:IntranetName
Value:
1
(PID) Process:(628) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
1
(PID) Process:(628) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
0
(PID) Process:(1900) smss.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(3408) smss.exeKey:HKEY_CURRENT_USER
Operation:writeName:di
Value:
!
(PID) Process:(1900) smss.exeKey:HKEY_CURRENT_USER\Environment
Operation:writeName:SEE_MASK_NOZONECHECKS
Value:
1
(PID) Process:(1900) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:smss.exe
Value:
"C:\Users\admin\AppData\Roaming\smss.exe" ..
(PID) Process:(1900) smss.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Operation:writeName:Hidden
Value:
0
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
1900smss.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\smss.exeexecutable
MD5:1140A72BA70A901753D21507D78CE372
SHA256:DD90CDC8B50BCE72055C1E49F49D3A48FAE39E7E031807A797F0EDFD7F52103B
628smss.exeC:\Users\admin\AppData\Roaming\smss.exeexecutable
MD5:1140A72BA70A901753D21507D78CE372
SHA256:DD90CDC8B50BCE72055C1E49F49D3A48FAE39E7E031807A797F0EDFD7F52103B
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
33
DNS requests
0
Threats
0

HTTP requests

No HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
1900
smss.exe
82.202.167.67:2544
—
JSC ISPsystem
RU
malicious
—
—
82.202.167.67:2544
—
JSC ISPsystem
RU
malicious

DNS requests

No data

Threats

No threats detected
No debug info
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Reports
C:\Users\admin\AppData\Roaming\smss.exe