MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 49cc6f25d16cf7c85d218bcd4ecbdedce0f5d4540bc5099436511291f48a3976. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.
Database Entry
NanoCore
Vendor detections: 18
| SHA256 hash: | 49cc6f25d16cf7c85d218bcd4ecbdedce0f5d4540bc5099436511291f48a3976 |
|---|---|
| SHA3-384 hash: | 39c96da0f385a2f049b9d07390bd58fa451a6ea699979abf4c259e091db57d4f16533bdb6c7a2d67ac789f69787eb2ce |
| SHA1 hash: | c2315cba4dc175554869cf1c7d7b4ddfdb65adea |
| MD5 hash: | 4c7df43e37814754ad1c8a97ab971af8 |
| humanhash: | fourteen-rugby-single-stream |
| File name: | 4c7df43e37814754ad1c8a97ab971af8.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 663'392 bytes |
| First seen: | 2023-02-06 13:00:53 UTC |
| Last seen: | 2023-02-06 14:48:27 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 12288:3YueB8OT4Q9HIbbir1vIm4KQH/HxCl9KOlOMyhiZq+zeRZA7Y1g9R:3YPT4Q9HHr1vIRCLShqq+FL |
| Threatray | 4'967 similar samples on MalwareBazaar |
| TLSH | T174E402247A10C56FCA905BB84EA5E3B457B0EE5D3E549F0B63E03FBFBDB91915908220 |
| TrID | 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10523/12/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | e0d0998dd8d8c8dc (1 x Formbook, 1 x NanoCore) |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore RAT |
Intelligence
File Origin
# of uploads :
2
# of downloads :
262
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
nanocore
ID:
1
File name:
4c7df43e37814754ad1c8a97ab971af8.exe
Verdict:
Malicious activity
Analysis date:
2023-02-06 13:03:17 UTC
Tags:
trojan nanocore rat
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Сreating synchronization primitives
Searching for synchronization primitives
DNS request
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Result
Malware family:
n/a
Score:
5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
nemesis overlay packed shell32.dll
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Verdict:
Malicious
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Snort IDS alert for network traffic
Uses dynamic DNS services
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Threat name:
Win32.Backdoor.NanoBot
Status:
Malicious
First seen:
2023-02-06 11:22:24 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
18 of 26 (69.23%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 4'957 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Executes dropped EXE
Loads dropped DLL
NanoCore
Malware Config
C2 Extraction:
alertt.duckdns.org:6445
Unpacked files
SH256 hash:
0dbe3c1b57287888e4eeea2a486e5adda95bb9fce97e2bdffad47802e4d9d92f
MD5 hash:
fd77fe6af66c627606ebde92325c4939
SHA1 hash:
6b5c3ad6b677a67cf151e7f7e95ece021fde56e0
Detections:
win_nanocore_w0
SH256 hash:
91e93ff76c34beb61a02f782558c8ff319558b63e008580eb567dd927663e19c
MD5 hash:
64517eec55e1f3c392b63b73d833e5f9
SHA1 hash:
463c45e1adc2269456e18b6bd47e521501d1f593
SH256 hash:
49cc6f25d16cf7c85d218bcd4ecbdedce0f5d4540bc5099436511291f48a3976
MD5 hash:
4c7df43e37814754ad1c8a97ab971af8
SHA1 hash:
c2315cba4dc175554869cf1c7d7b4ddfdb65adea
Malware family:
NanoCore
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
YARA Signatures
MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.
| Rule name: | ach_NanoCore |
|---|---|
| Author: | abuse.ch |
| Rule name: | cobalt_strike_tmp01925d3f |
|---|---|
| Author: | The DFIR Report |
| Description: | files - file ~tmp01925d3f.exe |
| Reference: | https://thedfirreport.com |
| Rule name: | malware_Nanocore_strings |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | MALWARE_Win_NanoCore |
|---|---|
| Author: | ditekSHen |
| Description: | Detects NanoCore |
| Rule name: | nanocore_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | Nanocore_RAT_Feb18_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Feb18_1_RID2DF1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Gen_2 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detetcs the Nanocore RAT |
| Reference: | https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/ |
| Rule name: | Nanocore_RAT_Gen_2_RID2D96 |
|---|---|
| Author: | Florian Roth |
| Description: | Detetcs the Nanocore RAT |
| Reference: | https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/ |
| Rule name: | pe_imphash |
|---|
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Windows_Trojan_Nanocore_d8c4e3c5 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_nanocore_w0 |
|---|---|
| Author: | Kevin Breen <kevin@techanarchy.net> |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
Comments
Login required
You need to login to in order to write a comment. Login with your abuse.ch account.