analyze malware
  • Huge database of samples and IOCs
  • Custom VM setup
  • Unlimited submissions
  • Interactive approach
Sign up, it’s free
download:

nass.exe

Full analysis: https://app.any.run/tasks/80d4ddce-e6e5-4cdd-a994-17d22e9ccfcd
Verdict: Malicious activity
Threats:

NanoCore is a Remote Access Trojan or RAT. This malware is highly customizable with plugins which allow attackers to tailor its functionality to their needs. Nanocore is created with the .NET framework and it’s available for purchase for just $25 from its “official” website.

Analysis date: September 11, 2019, 04:50:17
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
nanocore
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

DA609EB2E4FF25C05DB64C9A53A96C97

SHA1:

99997F99D2A0250FE1E185AB0C157B5311A2C6C6

SHA256:

3C094942E47DDFC79C9FFA196AD2537DBCE8B97841FB01E1D62FBC803E3317DE

SSDEEP:

12288:zGZR0P0kJhlin91Mkj+5R75b77kq/jd3g6CWBCHcCm4icyoMMjT98EWL8c2h:SZcrhlin9HsNLJw2UuoWbLTE

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

      • RegAsm.exe (PID: 2260)
      • RegAsm.exe (PID: 2508)
    • Changes the autorun value in the registry

      • RegAsm.exe (PID: 2508)
    • Writes to a start menu file

      • nass.exe (PID: 3132)
    • NANOCORE was detected

      • RegAsm.exe (PID: 2508)
  • SUSPICIOUS

    • Creates files in the user directory

      • RegAsm.exe (PID: 2508)
      • nass.exe (PID: 3132)
    • Executable content was dropped or overwritten

      • RegAsm.exe (PID: 2508)
    • Application launched itself

      • nass.exe (PID: 3132)
  • INFO

    No info indicators.
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.) (63.1)
.exe | Win64 Executable (generic) (23.8)
.dll | Win32 Dynamic Link Library (generic) (5.6)
.exe | Win32 Executable (generic) (3.8)
.exe | Generic Win/DOS Executable (1.7)

EXIF

EXE

Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0xac6e
UninitializedDataSize: -
InitializedDataSize: 756224
CodeSize: 36352
LinkerVersion: 8
PEType: PE32
TimeStamp: 2019:07:26 22:35:57+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 26-Jul-2019 20:35:57
Detected languages:
  • English - United States
  • German - Germany

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: 26-Jul-2019 20:35:57
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
0x00008C74
0x00008E00
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.43748
.rsrc
0x0000C000
0x000B8618
0x000B8800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.68025
.reloc
0x000C6000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.0815394

Resources

Title
Entropy
Size
Codepage
Language
Type
0
3.11665
188
Latin 1 / Western European
English - United States
RT_GROUP_ICON
1
2.66021
744
Latin 1 / Western European
English - United States
RT_ICON
2
2.63427
296
Latin 1 / Western European
English - United States
RT_ICON
3
3.87259
3752
Latin 1 / Western European
English - United States
RT_ICON
4
4.59789
2216
Latin 1 / Western European
English - United States
RT_ICON
5
4.98127
1384
Latin 1 / Western European
English - United States
RT_ICON
6
7.91128
13794
Latin 1 / Western European
English - United States
RT_ICON
7
2.60646
16936
Latin 1 / Western European
English - United States
RT_ICON
8
2.81183
9640
Latin 1 / Western European
English - United States
RT_ICON
9
2.76409
6760
Latin 1 / Western European
English - United States
RT_ICON

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
35
Monitored processes
4
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start nass.exe #NANOCORE regasm.exe nass.exe no specs regasm.exe no specs

Process information

PID
CMD
Path
Indicators
Parent process
3132"C:\Users\admin\AppData\Local\Temp\nass.exe" C:\Users\admin\AppData\Local\Temp\nass.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
2508"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
nass.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft .NET Assembly Registration Utility
Version:
2.0.50727.5420 (Win7SP1.050727-5400)
3096"C:\Users\admin\AppData\Local\Temp\nass.exe" C:\Users\admin\AppData\Local\Temp\nass.exenass.exe
User:
admin
Integrity Level:
MEDIUM
2260"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exenass.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft .NET Assembly Registration Utility
Exit code:
0
Version:
2.0.50727.5420 (Win7SP1.050727-5400)
Total events
420
Read events
415
Write events
5
Delete events
0

Modification events

(PID) Process:(2508) RegAsm.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
Operation:writeName:TCP Monitor
Value:
C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe
(PID) Process:(3132) nass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
0
(PID) Process:(3132) nass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
1
Executable files
1
Suspicious files
1
Text files
0
Unknown types
0

Dropped files

PID
Process
Filename
Type
2508RegAsm.exeC:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.datbinary
MD5:218F6CC129E12014E2B8CD7E94F537A1
SHA256:96A6D9BFC98BD5E779D258320C717302A4A43FC7F51FFB287BDFED4A55A0DB97
2508RegAsm.exeC:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exeexecutable
MD5:278EDBD499374BF73621F8C1F969D894
SHA256:C6999B9F79932C3B4F1C461A69D9DC8DC301D6A155ABC33EFE1B6E9E4A038391
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
16
DNS requests
6
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
2508
RegAsm.exe
8.8.8.8:53
Google Inc.
US
whitelisted
2508
RegAsm.exe
173.254.223.125:1144
meeti.ddns.net
QuadraNet, Inc
US
malicious

DNS requests

Domain
IP
Reputation
meeti.ddns.net
  • 173.254.223.125
unknown

Threats

No threats detected
No debug info