MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460. 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: 17
| SHA256 hash: | 62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460 |
|---|---|
| SHA3-384 hash: | dc888e09ece1df018d7551675e57fb5fd0a27f84444a1d4b449c58e11b561234501456445cfa1273428ee9919f10ec6b |
| SHA1 hash: | 2c298dfa121cf12fa95ea0af2fbb75f74a809f74 |
| MD5 hash: | c98de529cef3f418de14bccdff7503f9 |
| humanhash: | north-pip-pizza-mountain |
| File name: | Signed Proposal.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 344'896 bytes |
| First seen: | 2023-05-01 11:20:22 UTC |
| Last seen: | 2023-05-13 22:57:28 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader) |
| ssdeep | 6144:/Ya6jdFlXUcGuS1fgB8XagGObNYmxnHzCs9687k2oYgUhFaHh/yivF91qnM579DK:/YhNUcGuygCa22sqsD6haOTD1xNs |
| Threatray | 1'635 similar samples on MalwareBazaar |
| TLSH | T10874221433D5C0BFE8F6CFB01E75152ADCD2A413D8B88E5B8372590A7E12994D71E36A |
| 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 | b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla) |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore RAT |
Intelligence
File Origin
# of uploads :
3
# of downloads :
346
Origin country :
NLVendor Threat Intelligence
Malware family:
nanocore
ID:
1
File name:
Signed Proposal.exe
Verdict:
Malicious activity
Analysis date:
2023-05-01 11:20:56 UTC
Tags:
nanocore rat
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
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
Creating a file in the Program Files subdirectories
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:
comodo nemesis overlay packed remcos 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:
NanoCoreRAT
Verdict:
Malicious
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
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)
Found malware configuration
Machine Learning detection for sample
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.NanoCore
Status:
Malicious
First seen:
2023-05-01 11:21:08 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
16 of 37 (43.24%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 1'625 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
Drops file in Program Files directory
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:
arkseven7002.ddns.net:7727
arkseven702.ddns.net:7727
arkseven702.ddns.net:7727
Unpacked files
SH256 hash:
367cc2488c8581dd9c01f31c7e1c6bcfafe5442e6748f89da2968911fb577c6e
MD5 hash:
f52ec901e9bf7ce80da7edfbea52d93b
SHA1 hash:
0d63593501834e23d75490c0668ad806dffaabff
SH256 hash:
62ac819f738f75c7840ae6c91a53ecabb0c711b37ed6cf022f9d1a605a523460
MD5 hash:
c98de529cef3f418de14bccdff7503f9
SHA1 hash:
2c298dfa121cf12fa95ea0af2fbb75f74a809f74
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.
Malspam
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