MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a667821600a7aeac44680d1b2a1d4ee7590915e4e538f110a1a216aaff769a4. 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: 11


Intelligence 11 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a667821600a7aeac44680d1b2a1d4ee7590915e4e538f110a1a216aaff769a4
SHA3-384 hash: 5817319774b02c4637ebce9e51fb40fb682e35e0509888583485ce7dbc6f311d594dd08b0192cfb9118affa4ad3e71ae
SHA1 hash: 56e2f5566de74b239eca0efa1be1576163402b93
MD5 hash: e845e57e78b9e057dbcb964c73a2299a
humanhash: mobile-wyoming-oven-solar
File name:MYU.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:103'936 bytes
First seen:2022-03-08 14:57:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 1536:cRNWpxhw9/DMz97RmQU+iopiA+bHq0R4Co0s7yj7c0q1V:q8poM57QYzCo8/c0q1V
Threatray 26 similar samples on MalwareBazaar
TLSH T18AA306857F88F225C268AC75C692C9F4C2B27D67D921E607BDC43F1E79336A29102B17
File icon (PE):PE icon
dhash icon 3d7de4e1e1610d15 (7 x NanoCore, 5 x AgentTesla, 4 x SnakeKeylogger)
Reporter madjack_red
Tags:exe NanoCore

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
2.58.149.236:6932 https://threatfox.abuse.ch/ioc/391245/

Intelligence

File Origin
# of uploads :
1
# of downloads :
225
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
scanfile.xlsx
Verdict:
Malicious activity
Analysis date:
2022-03-08 14:55:53 UTC
Tags:
exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/84f0c5f1-168d-443f-8d1f-30006f26fa44

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/248305/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.48538165.14471.22653.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a window
Sending an HTTP GET request to an infection source
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/62279a25b94fb38cb43fc050/reports/f7448e28-d4d0-4d1b-be79-51dd191828bd/overview
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:
Generic Malware
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/32c91a36-7abe-4e0b-bce0-ec931230c866
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/952652
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus detection for URL or domain
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)
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Sigma detected: Suspicius Schtasks From Env Var Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Costura Assembly Loader
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 585133 Sample: MYU.exe Startdate: 08/03/2022 Architecture: WINDOWS Score: 100 46 kingsley2022.bounceme.net 2->46 54 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->54 56 Multi AV Scanner detection for domain / URL 2->56 58 Found malware configuration 2->58 60 14 other signatures 2->60 9 MYU.exe 15 3 2->9         started        13 dhcpmon.exe 4 2->13         started        15 dhcpmon.exe 3 2->15         started        17 MSBuild.exe 2 2->17         started        signatures3 process4 dnsIp5 52 136.144.41.109, 49752, 80 WORLDSTREAMNL Netherlands 9->52 44 C:\Users\user\AppData\Local\...\MYU.exe.log, ASCII 9->44 dropped 19 MSBuild.exe 1 14 9->19         started        24 conhost.exe 13->24         started        26 conhost.exe 15->26         started        28 conhost.exe 17->28         started        file6 process7 dnsIp8 48 kingsley2022.bounceme.net 2.58.149.236, 49768, 49769, 49770 GBTCLOUDUS Netherlands 19->48 50 192.168.2.1 unknown unknown 19->50 38 C:\Users\user\AppData\Roaming\...\run.dat, data 19->38 dropped 40 C:\Users\user\AppData\Local\...\tmp623A.tmp, XML 19->40 dropped 42 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->42 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 19->62 64 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->64 30 schtasks.exe 1 19->30         started        32 schtasks.exe 1 19->32         started        file9 signatures10 process11 process12 34 conhost.exe 30->34         started        36 conhost.exe 32->36         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a667821600a7aeac44680d1b2a1d4ee7590915e4e538f110a1a216aaff769a4/
Threat name:
ByteCode-MSIL.Backdoor.Androm
Create hunting rule
Status:
Malicious
First seen:
2022-03-08 13:56:20 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjthqilabj5ovrcgqdi3fiou5z2zbek6jzjy6eikdiqwvl7xngsa._file
Verdict:
malicious
Similar samples:
30e1c4392250769863fd70b3585461d469295cd9d320cd407a406d58f7f03298
NanoCore
415cef68482c74fcfff231fafc63bf9835c72da00e826e753aac86f704db7ac8
NanoCore
c2145acbab68ac8a0c33194cbab2f3a48dcff7d7804842f80620191fee0c2fb6
NanoCore
cc15573c85379c9dd96f926c62a62f402a95052ed65b616daf881e0dae9ee674
NanoCore
cd35b1f235dbd57884099a1ddd383dddad71c4af5e4286e154f11fd189744d48
NanoCore
d99f9a48e77080eafea3b4e1173a3bd1f556664faa04b7d7ad6a09f9feddf300
NanoCore
e08f66dabf1ae4079d88a17a1747556516770410c82e806a07e806909efed0b8
NanoCore
ea930b3655ed7afd7121e9ed20477a2b1849a7bb2a3f51d5b67697dc1614202c
NanoCore
+ 16 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220308-sb7ahsgbb5/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
NanoCore
Malware Config
C2 Extraction:
kingsley2022.bounceme.net:6932
212.192.246.6:6932
Unpacked files
SH256 hash:
4a667821600a7aeac44680d1b2a1d4ee7590915e4e538f110a1a216aaff769a4
MD5 hash:
e845e57e78b9e057dbcb964c73a2299a
SHA1 hash:
56e2f5566de74b239eca0efa1be1576163402b93
Link:
https://www.unpac.me/results/4fa10d3b-3d34-4700-bf3d-b2da8fb46289/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/4a667821600a7aeac44680d1b2a1d4ee7590915e4e538f110a1a216aaff769a4

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/248305/

Comments