MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1d41e76da681ad17d46ff9a1fb6f59afb00a8e96df9f2adf42634f05849e6fd2. 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


Intelligence 10 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1d41e76da681ad17d46ff9a1fb6f59afb00a8e96df9f2adf42634f05849e6fd2
SHA3-384 hash: 3b2acc3f9217496357b4eb526629a4b8ebceafc15c82e9abf836cd34cc7c1d488eaa7d616e57d8552db8d7a799d5fe8b
SHA1 hash: cd14770d70290ca4b5df67b864be97c94e71f606
MD5 hash: 8cf74500bb24624b63930bf263aafcb0
humanhash: football-maine-blossom-social
File name:8cf74500bb24624b63930bf263aafcb0.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:2'444'288 bytes
First seen:2020-10-31 06:48:36 UTC
Last seen:2020-11-06 16:12:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'612 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:pN1JFETRuG26ChSRa9WyNDVuB01Y+OxeiO6XjTF6lu6UtPAiIiVZkvHyYJBPXTjO:
Threatray 1'212 similar samples on MalwareBazaar
TLSH F0B5373D6E9826E36173E676A0F60187FAE865C673781C4B42C33B58294AF063D9734D
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore RAT C2:
atacoinc8897.hopto.org:2008

Intelligence

File Origin
# of uploads :
4
# of downloads :
188
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/81418/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.44271907.24145.6262.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Creating a file
Creating a window
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Launching a process
Deleting a recently created file
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
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/517470
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
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 dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
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 Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 307838 Sample: OGKH8KZq2Z.exe Startdate: 31/10/2020 Architecture: WINDOWS Score: 100 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 Multi AV Scanner detection for dropped file 2->67 69 11 other signatures 2->69 8 OGKH8KZq2Z.exe 1 4 2->8         started        12 dhcpmon.exe 3 2->12         started        14 vlc.exe 1 2->14         started        16 3 other processes 2->16 process3 file4 55 C:\Users\user\AppData\Roaming\...\vlc.exe, PE32 8->55 dropped 57 C:\Users\user\...\vlc.exe:Zone.Identifier, ASCII 8->57 dropped 59 C:\Users\user\AppData\...\OGKH8KZq2Z.exe.log, ASCII 8->59 dropped 73 Injects a PE file into a foreign processes 8->73 18 OGKH8KZq2Z.exe 1 15 8->18         started        23 OGKH8KZq2Z.exe 8->23         started        25 dhcpmon.exe 12->25         started        27 dhcpmon.exe 12->27         started        29 vlc.exe 14->29         started        31 vlc.exe 14->31         started        33 OGKH8KZq2Z.exe 16->33         started        35 dhcpmon.exe 16->35         started        37 vlc.exe 16->37         started        signatures5 process6 dnsIp7 61 atacoinc8897.hopto.org 23.105.131.174, 2008, 49732 LEASEWEB-USA-NYC-11US United States 18->61 47 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->47 dropped 49 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->49 dropped 51 C:\Users\user\AppData\Local\...\tmpF6F3.tmp, XML 18->51 dropped 53 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->53 dropped 71 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->71 39 schtasks.exe 1 18->39         started        41 schtasks.exe 1 18->41         started        file8 signatures9 process10 process11 43 conhost.exe 39->43         started        45 conhost.exe 41->45         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1d41e76da681ad17d46ff9a1fb6f59afb00a8e96df9f2adf42634f05849e6fd2/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-10-30 14:28:20 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=dva6o3ngqgwrpvdp7gq7w32zv6yavduw36psvx2cmnhqlbe6n7ja._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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22221b72f894bb076ead64d8e6c09daf40692586a2b9f3409d91ae72c0a001ee
NanoCore
2f7fe8478a3b7e654cdacc53ed9a4ee0bc607aa75f302618ba8ed713bac399be
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602b19f259171ac577fb9d67952442c71809b4b3977484115883d7ed6be067a3
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7795d2106023220b5e106b1e05815e7818d66189c01d4bc927767008fccdc6d2
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a9352a90a15c864ae05d1d1138aff00094883dc44afffc471e837e46fe3eb24e
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bd969441be871b85681f3e4e9b933c311ab6d9a9360822f6411c1d2edbae4f26
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cb5eb4758a41046a2f3fc084731d756aedf8ea212dc08c9bb2e6cd7f5eff6cae
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ef5b4a828d4322e2ca5681423488e03e9991191809fc068d80ce0bbeba792984
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f86a114e73dd0f15bc888e3db1477aa4c92d333bb236c4d3d1f49e72858bb80d
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fe7d67f2ca207d604740c8e66d22638049ca8a0c40818ad9f1d8515d6912f16d
NanoCore
+ 1'202 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/201031-c9chhb1436/
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
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
atacoinc8897.hopto.org:2008
23.105.131.174:2008
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/1d41e76da681ad17d46ff9a1fb6f59afb00a8e96df9f2adf42634f05849e6fd2

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
Create hunting rule
Author:abuse.ch
Rule name:Nanocore
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Gen_2
Create hunting rule
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:win_nanocore_w0
Create hunting rule
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.

Web download

NanoCore

Executable exe 1d41e76da681ad17d46ff9a1fb6f59afb00a8e96df9f2adf42634f05849e6fd2

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/768506/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/81418/

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