MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 645a6049e233daf9c05944e1644eb7ba86ec8368ebab70862e926eef9117dcbd. 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: 10
| SHA256 hash: | 645a6049e233daf9c05944e1644eb7ba86ec8368ebab70862e926eef9117dcbd |
|---|---|
| SHA3-384 hash: | 294ce45a5ad1dc0353c28e3d4607a62f3a9f4e6cd5de74a87d52cd175bc4178c8318f422f01b3b6b4936f21bf1f9c954 |
| SHA1 hash: | 79855a0e2d4378d91f987f0046a2d2f470ca3193 |
| MD5 hash: | ab02d19370377ebefa832e38e4f9531a |
| humanhash: | uncle-bulldog-earth-ten |
| File name: | remittance slip.pdf.exe |
| Download: | download sample |
| Signature | NanoCore |
| File size: | 1'139'346 bytes |
| First seen: | 2021-05-11 10:36:26 UTC |
| Last seen: | 2021-05-11 11:04:56 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | fcf1390e9ce472c7270447fc5c61a0c1 (863 x DCRat, 118 x NanoCore, 94 x njrat) |
| ssdeep | 24576:BAOcZpJ3SCUY30ga/GLRJAXu1p4JJj1eLQy3gM2soAY5aRcKX+C:bcSG++1J8uP4Aky3D2xA2aaC |
| Threatray | 2'408 similar samples on MalwareBazaar |
| TLSH | F4351241B3C288B2D9330D3159297B12ADBD3D205F689B1FA7D509ADEE356816630FE3 |
| Reporter |  abuse_ch |
| Tags: | exe NanoCore |
Intelligence
File Origin
# of uploads :
2
# of downloads :
157
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Sending a UDP request
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Creating a file in the %temp% directory
Adding an access-denied ACE
Launching a process
Deleting a recently created file
DNS 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
Unauthorized injection to a recently created process by context flags manipulation
Sending a TCP request to an infection source
Enabling autorun by creating a file
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.
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Drops PE files with a suspicious file extension
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Detection:
nanocore
Threat name:
Win32.Trojan.Predator
Status:
Malicious
First seen:
2021-05-11 10:36:35 UTC
File Type:
PE (Exe)
Extracted files:
46
AV detection:
26 of 47 (55.32%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
nanocorerat
Similar samples:
+ 2'398 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Score:
10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Loads dropped DLL
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
shahzad73.ddns.net:9036
shahzad73.casacam.net:9036
shahzad73.casacam.net:9036
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) [C0029.002] Cryptography Micro-objective::SHA1::Cryptographic Hash
1) [C0029.003] Cryptography Micro-objective::SHA256::Cryptographic Hash
2) [C0031.001] Cryptography Micro-objective::AES::Decrypt Data
3) [C0032.001] Data Micro-objective::CRC32::Checksum
4) [C0026.002] Data Micro-objective::XOR::Encode Data
5) [C0030.001] Data Micro-objective::MurmurHash::Non-Cryptographic Hash
6) [F0004.007] Defense Evasion::Bypass Windows File Protection
8) [C0046] File System Micro-objective::Create Directory
9) [C0048] File System Micro-objective::Delete Directory
10) [C0047] File System Micro-objective::Delete File
11) [C0049] File System Micro-objective::Get File Attributes
12) [C0051] File System Micro-objective::Read File
13) [C0050] File System Micro-objective::Set File Attributes
14) [C0052] File System Micro-objective::Writes File
15) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
16) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
17) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
18) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
19) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
20) [C0040] Process Micro-objective::Allocate Thread Local Storage
21) [C0017] Process Micro-objective::Create Process
22) [C0038] Process Micro-objective::Create Thread
23) [C0041] Process Micro-objective::Set Thread Local Storage Value
24) [C0018] Process Micro-objective::Terminate Process