MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a1fba3b877a576f41850e0696a9ae45e4419de786d1fb2ed164b2c3c0aa97917. 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 YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a1fba3b877a576f41850e0696a9ae45e4419de786d1fb2ed164b2c3c0aa97917
SHA3-384 hash: e4f5e4165afafdff25b89d30b30b6ee7aa21208969d3519fcb327f198b498ab545d768f57f7e6a665234b6605d0e04f6
SHA1 hash: 28f5073bd547a34de2d3439e869442cf44237672
MD5 hash: 9cfca42d00e604499884cf66bfb4626c
humanhash: bakerloo-minnesota-summer-magnesium
File name:PO-13916.jpeg.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:474'112 bytes
First seen:2021-05-27 12:02:07 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'601 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:SRtkAc8DlJr/xyWcuZpXU6UTK1Vj4dklmVsg:Ctk5UJ7DZ9U6U6VLisg
Threatray 1'966 similar samples on MalwareBazaar
TLSH BAA4122D135DBA9FCB7F05F990904205673AD22EAD67EFC5ACC8B42428A73D742067D2
Reporter James_inthe_box
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
149
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO-13916.jpeg.exe
Verdict:
Malicious activity
Analysis date:
2021-05-27 12:05:58 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/1e331bcf-1c5a-44f7-91f1-d1e1018d9ca6

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/162689/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Connection attempt
Forced shutdown of a system process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Unauthorized injection to a system process
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/793158
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 425554 Sample: PO-13916.jpeg.exe Startdate: 27/05/2021 Architecture: WINDOWS Score: 100 51 annapro.linkpc.net 2->51 55 Found malware configuration 2->55 57 Malicious sample detected (through community Yara rule) 2->57 59 Multi AV Scanner detection for dropped file 2->59 61 12 other signatures 2->61 9 PO-13916.jpeg.exe 6 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 file5 45 C:\Users\user\AppData\...\lldhSOiNYRgdpd.exe, PE32 9->45 dropped 47 C:\Users\user\AppData\Local\...\tmp26E9.tmp, XML 9->47 dropped 49 C:\Users\user\...\PO-13916.jpeg.exe.log, ASCII 9->49 dropped 63 Uses schtasks.exe or at.exe to add and modify task schedules 9->63 19 MSBuild.exe 1 11 9->19         started        23 schtasks.exe 1 9->23         started        25 conhost.exe 13->25         started        27 conhost.exe 15->27         started        29 conhost.exe 17->29         started        signatures6 process7 dnsIp8 53 annapro.linkpc.net 217.138.212.59, 54984 M247GB United Kingdom 19->53 41 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 19->41 dropped 43 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->43 dropped 31 schtasks.exe 1 19->31         started        33 schtasks.exe 1 19->33         started        35 conhost.exe 23->35         started        file9 process10 process11 37 conhost.exe 31->37         started        39 conhost.exe 33->39         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a1fba3b877a576f41850e0696a9ae45e4419de786d1fb2ed164b2c3c0aa97917/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-05-27 11:26:34 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
30 of 47 (63.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uh52hodxuv3pigcq4buwvgxelzcbtxtynup3f3iwjmwdycvjpelq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
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NanoCore
140902e2a23240a35b3e72be9c0878d18c2a7b4780feab213cbcc03156804c05
NanoCore
4b603d683f975207871344aa9790ac649bd15c98cceecf626b92a1d3d8fd85f4
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5184caaa51f3f661060731ef43e83f7d1978779ef224a83e819558f925eee73e
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6163f1bf34c821d55a7e532009adc95ba921b28578a58336e5b01f6c09d4dad4
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70a3e3040e47398629957e35100380def41b1ab5b4ac73e777051b6e85c60b19
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af7b5b39405065f105a0bf0f53578061adcd58a5861bb38827dd0f62df4f57ed
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ca2e54b05185ed7f76ba5ccf9f24a2e607a6322fdbd1acbc37902e4dac015697
NanoCore
e847719a98762bcf7422064186c2cdbb2f58000622448c3adcb6769b7cfbea68
NanoCore
ec89b2b660ea42254a90f3b045dc98bfe6d1733878bd39a2a7030d68de169859
NanoCore
+ 1'956 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/210527-ngbts714sa/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Contains code to disable Windows Defender
NanoCore
Malware Config
C2 Extraction:
217.138.212.59:54984
annapro.linkpc.net:54984
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a1fba3b877a576f41850e0696a9ae45e4419de786d1fb2ed164b2c3c0aa97917

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
Create hunting rule
Author:jeFF0Falltrades
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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/162689/

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