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File name:

aras31.exe

Full analysis: https://app.any.run/tasks/e27ad0d7-4cf0-4ee6-9dc9-8792fea6027f
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: June 27, 2022, 11:42:42
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
rat
nanocore
trojan
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

4C206BB87E613597D9153EC9BCCA472D

SHA1:

5F784775CF0F0B806CBFAA916E1E1C741763E159

SHA256:

C2386814A88843A07711EE61A8121010A975757DF2C2EE0491D1A9F73AAE8F29

SSDEEP:

6144:QLV6Bta6dtJmakIM5ZofKz4RmV1PP92Stb45nR:QLV6Btpmk0oGE4Nd45R

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

    • NANOCORE detected by memory dumps

      • aras31.exe (PID: 2612)
    • NANOCORE was detected

      • aras31.exe (PID: 2612)
    • Connects to CnC server

      • aras31.exe (PID: 2612)
  • SUSPICIOUS

    • Checks supported languages

      • aras31.exe (PID: 2612)
    • Reads the computer name

      • aras31.exe (PID: 2612)
    • Creates files in the user directory

      • aras31.exe (PID: 2612)
    • Reads Environment values

      • aras31.exe (PID: 2612)
  • 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: 0x1e792
UninitializedDataSize: -
InitializedDataSize: 90112
CodeSize: 116736
LinkerVersion: 6
PEType: PE32
TimeStamp: 2015:02:22 01:49:37+01:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 22-Feb-2015 00:49:37

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: 22-Feb-2015 00:49:37
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE
  • IMAGE_FILE_LINE_NUMS_STRIPPED
  • IMAGE_FILE_LOCAL_SYMS_STRIPPED

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0001C798
0x0001C800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
6.59807
.reloc
0x00020000
0x0000000C
0x00000200
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ
0.10191
.rsrc
0x00022000
0x00015DC8
0x00015E00
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
7.99771

Resources

Title
Entropy
Size
Codepage
Language
Type
1
7.99788
89456
Latin 1 / Western European
UNKNOWN
RT_RCDATA

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
33
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #NANOCORE aras31.exe

Process information

PID
CMD
Path
Indicators
Parent process
2612"C:\Users\admin\AppData\Local\Temp\aras31.exe" C:\Users\admin\AppData\Local\Temp\aras31.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Total events
386
Read events
386
Write events
0
Delete events
0

Modification events

No data
Executable files
0
Suspicious files
0
Text files
1
Unknown types
0

Dropped files

PID
Process
Filename
Type
2612aras31.exeC:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.dattext
MD5:EFF7B67FE3D722ECAA4A3141EFCB2A80
SHA256:2711D016BA8989A6506DE6C48DE3CDAEE0AC4D80F4CC95A80DFBFF916DDAEC8C
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
1
DNS requests
1
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
2612
aras31.exe
167.71.56.116:22138
eu-central-7075.packetriot.net
US
malicious

DNS requests

Domain
IP
Reputation
eu-central-7075.packetriot.net
  • 167.71.56.116
malicious

Threats

PID
Process
Class
Message
2612
aras31.exe
A Network Trojan was detected
ET TROJAN Possible NanoCore C2 60B
11 ETPRO signatures available at the full report
No debug info