MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4cbbbc26d5d4172144238f1433ae068188e4b78f293859c81f6552823b35001e. 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: 9
| SHA256 hash: | 4cbbbc26d5d4172144238f1433ae068188e4b78f293859c81f6552823b35001e |
|---|---|
| SHA3-384 hash: | d18ce8d008634f526ee5ac7e5c11b344418d95a178ddafdfa7cbc8c7cb74b1d6a0e2fa1c2927c6d91cc0544c193d6b20 |
| SHA1 hash: | 22ae132ad4a68cf4a8805d72efb229f486a6836c |
| MD5 hash: | 451c03f99e0e7f38474140dd30a5020f |
| humanhash: | harry-undress-steak-robert |
| File name: | Transfer form payu.scr.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 3'212'800 bytes |
| First seen: | 2021-05-17 08:36:01 UTC |
| Last seen: | 2021-05-17 09:45:52 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 24576:61br+/9LKmBb5UAI8GoI2msIaqvbMBggBCjDaffzk5EfWyqLVcxYtejMLUSOuMn:gQzBVzIytgHefOQOtes |
| Threatray | 85 similar samples on MalwareBazaar |
| TLSH | 6DE54A2439EA501AF173AFB69FE874A6996FBF733B06501D109123460733A41EDD293E |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore RAT |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| 45.154.4.187:7416 | https://threatfox.abuse.ch/ioc/29985/ |
Intelligence
File Origin
# of uploads :
3
# of downloads :
145
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Transfer form payu.scr
Verdict:
Suspicious activity
Analysis date:
2021-05-17 08:09:15 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Result
Verdict:
Malware
Maliciousness:
Behaviour
Unauthorized injection to a recently created process
Creating a file
Creating a window
Creating a file in the %AppData% subdirectories
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Sending a UDP request
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Detection:
nanocore
Detection(s):
Malicious file
Verdict:
unknown
Similar samples:
+ 75 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore evasion keylogger spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
45.154.4.187:7416
alexwill.ddns.net:7416
alexwill.ddns.net:7416
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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: | Nanocore |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect Nanocore in memory |
| Reference: | internal research |
| Rule name: | nanocore_rat |
|---|---|
| Author: | jeFF0Falltrades |
| Rule name: | Nanocore_RAT_Feb18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Nanocore RAT |
| Reference: | Internal Research - T2T |
| Rule name: | Nanocore_RAT_Gen_2 |
|---|---|
| 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: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| 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.
Comments
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MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0009] Anti-Behavioral Analysis::Virtual Machine Detection
1) [C0027.001] Cryptography Micro-objective::AES::Encrypt Data