MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0. 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: 12


Intelligence 12 IOCs 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0
SHA3-384 hash: b85ca0649d81e98dcc81bf2d50c34932d2f513918a9230c9c6f120f6ed15f583c27fef7e21fe7ffe0a5f14d875521b87
SHA1 hash: 6e9e1ef76f636920c5a31875c098ab8797ec98ef
MD5 hash: 2b9b02ab2afd2a2a65aae91b603f66dd
humanhash: cup-fanta-august-arizona
File name:WORKEASY.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:322'048 bytes
First seen:2025-07-01 17:00:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:8zuC6f8OrmL5IyGMpaUMy+NSdhVa4tRS:RCbOrmLQLVIT
TLSH T1D664A6117FB14F63D21B477ADAD3414887F7D0023762F7096A6A92A41C933BE4DC2BA6
TrID 44.4% (.EXE) Win64 Executable (generic) (10522/11/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
192.169.69.26:1985

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
192.169.69.26:1985 https://threatfox.abuse.ch/ioc/1552122/

Intelligence

File Origin
# of uploads :
1
# of downloads :
45
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/11844/
Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6864143237c3436779487b5a
Tags:
nanocore backdoor extens remo
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Connection attempt to an infection source
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 net_reactor obfuscated obfuscated packed
Link:
https://www.filescan.io/uploads/68641432ee5b1c8f3d231bb6/reports/bb7ec86b-503a-4820-a7be-5c422316f5b2/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0
Malware family:
NanoCoreRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6f0c41fa-2654-4bf0-9e3b-528b0a63ca03
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
64 / 100
Link:
https://www.joesandbox.com/analysis/1726578
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Antivirus / Scanner detection for submitted sample
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Behaviour
Behavior Graph:
Download SVG
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) Win 64 Exe x64
Link:
https://app.malva.re/file/2b9b02ab2afd2a2a65aae91b603f66dd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0/
Threat name:
Win64.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-07-01 17:00:33 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kjzpyactr53vtig62nzycm4xxgcy7soqkcn3czh2u6a7kthxjlia._file
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore defense_evasion discovery keylogger spyware stealer trojan
Link:
https://tria.ge/reports/250701-vh8g9scr6v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Checks whether UAC is enabled
Checks computer location settings
Executes dropped EXE
Downloads MZ/PE file
NanoCore
Nanocore family
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/9d4d1499-675b-46ff-8c8e-b49a7fcd8a86
Unpacked files
SH256 hash:
5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0
MD5 hash:
2b9b02ab2afd2a2a65aae91b603f66dd
SHA1 hash:
6e9e1ef76f636920c5a31875c098ab8797ec98ef
Link:
https://www.unpac.me/results/03449e98-fa0f-41a3-9e6f-30bce781dd4e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.91
Link:
https://yomi.yoroi.company/submissions/5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0

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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:win32_dotnet_obfuscate
Create hunting rule
Author:Reedus0
Description:Rule for detecting .NET obfuscated malware

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

NanoCore

Executable exe 5272fc00538f7759a0ded373813397b9858fc9d0509bb164faa781f54cf74ad0

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/11844/
  
URLhaus
https://urlhaus.abuse.ch/url/3573105/
  
Delivery method
Distributed via web download

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments