MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0
SHA3-384 hash: d5cdee46474434373cd129fc5075c1de63d71b1bf609a8612bf532304facde0c6e79de4c28d9792081ce8546fc509541
SHA1 hash: b820e910e9797aeffdf6920e8e560448a7be6318
MD5 hash: 06c388314f745fb85a559f038ce16e48
humanhash: oxygen-twelve-washington-lithium
File name:06c388314f745fb85a559f038ce16e48.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:25'608 bytes
First seen:2020-12-17 07:24:03 UTC
Last seen:2020-12-17 08:32:45 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 768:A+mLaSPTU7LbIb2Tpx1V7F+zQXXLMUf2h:A+mLaSPgbIb2TlrFXXLMUf
Threatray 1'397 similar samples on MalwareBazaar
TLSH 89B2082E23087E12E6AB93317643C1633B10567332B78E96E566530CC5937E469DADCF
Reporter abuse_ch
Tags:exe NanoCore RAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
06c388314f745fb85a559f038ce16e48.exe
Verdict:
Malicious activity
Analysis date:
2020-12-17 07:26:28 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/9ebaa29a-e891-4c95-b9bd-75aebe2d02be

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.DownloaderNET.105.14628.8991.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
DNS request
Unauthorized injection to a recently created process
Adding an access-denied ACE
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Creating a file in the %temp% directory
Deleting a recently created file
Connection attempt
Sending a UDP request
Sending a TCP request to an infection source
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/565033
Signature
.NET source code contains potential unpacker
Connects to a pastebin service (likely for C&C)
Detected Nanocore Rat
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Hides threads from debuggers
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 331603 Sample: 5F3Gel7gY8.exe Startdate: 17/12/2020 Architecture: WINDOWS Score: 100 75 Found malware configuration 2->75 77 Malicious sample detected (through community Yara rule) 2->77 79 Sigma detected: Scheduled temp file as task from temp location 2->79 81 6 other signatures 2->81 8 5F3Gel7gY8.exe 15 3 2->8         started        12 dhcpmon.exe 2->12         started        14 dhcpmon.exe 2->14         started        16 5F3Gel7gY8.exe 3 2->16         started        process3 dnsIp4 69 hastebin.com 104.24.126.89, 443, 49719, 49724 CLOUDFLARENETUS United States 8->69 85 Hides threads from debuggers 8->85 87 Injects a PE file into a foreign processes 8->87 18 5F3Gel7gY8.exe 1 12 8->18         started        23 cmd.exe 1 8->23         started        25 WerFault.exe 23 9 8->25         started        89 Writes to foreign memory regions 12->89 27 cmd.exe 12->27         started        71 104.24.127.89, 443, 49725 CLOUDFLARENETUS United States 14->71 29 cmd.exe 14->29         started        31 dhcpmon.exe 14->31         started        73 192.168.2.1 unknown unknown 16->73 33 cmd.exe 16->33         started        35 5F3Gel7gY8.exe 16->35         started        signatures5 process6 dnsIp7 67 gsyagvxnzmkoplbhduisbagtevcnxmzlopljdgye.ydns.eu 188.72.85.45, 2177 M247GB Netherlands 18->67 59 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->59 dropped 61 C:\Users\user\AppData\Roaming\...\run.dat, data 18->61 dropped 63 C:\Users\user\AppData\Local\...\tmpE903.tmp, XML 18->63 dropped 65 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->65 dropped 83 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->83 37 schtasks.exe 1 18->37         started        39 schtasks.exe 1 18->39         started        41 conhost.exe 23->41         started        43 timeout.exe 1 23->43         started        53 2 other processes 27->53 45 conhost.exe 29->45         started        47 timeout.exe 29->47         started        49 conhost.exe 33->49         started        51 timeout.exe 33->51         started        file8 signatures9 process10 process11 55 conhost.exe 37->55         started        57 conhost.exe 39->57         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2020-12-17 07:25:05 UTC
AV detection:
12 of 27 (44.44%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=uzxnz3bsgctpnrqspl3m7ca74ixx35mddjgvbuxbbsl43saj5xqa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
483338a656b2a7bf095d9bf3ca950419f217acdb9812b3d0013ccc13785f305e
NanoCore
56e710ea1f70626aee844269cb7197e2142908b70082908436a77e1ee4d9fce7
NanoCore
5adb192079fbc16f4631d3e5c894d9bec1ed384e7be85742c4f076760eb64a0f
NanoCore
5b38a4755a8300052443ad21fe01717fe6b94ccc1a6747f9a8d8c878a8513df5
NanoCore
5e3140ed7841e6893114a0d4d9c5ee239736449aaba20d2c8939a051e5ef21c5
NanoCore
74e0eb3b39810ae2847ba2238bcf8fc178c187d7b783f865c262117d933f6d4c
NanoCore
adfe2c7e157726a346f6682a7d7ccf6fbe6aa884fafe24522f9616c4f8db19e6
NanoCore
cff3d5fedc8fdab09a7b27524a02503b53f4f7378ab0a09219701d3b9c3e68f4
NanoCore
f1eee793a63b26c3b031faad22f15c106caeda0b91800efab5d3c10791806293
NanoCore
f35d8e262610048cbea02367418cd7d7fbef4a9ebfa37f68d544bb16524f6264
NanoCore
+ 1'387 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/201217-3cf7wm3ax2/
Behaviour
Creates scheduled task(s)
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
gsyagvxnzmkoplbhduisbagtevcnxmzlopljdgye.ydns.eu:2177
Unpacked files
SH256 hash:
a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0
MD5 hash:
06c388314f745fb85a559f038ce16e48
SHA1 hash:
b820e910e9797aeffdf6920e8e560448a7be6318
Link:
https://www.unpac.me/results/5a66ff8e-6f15-4539-a88a-2fb181da1eee/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0

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
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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: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 a66edcec3230a6f6c6127af6cf881fe22f7df5831a4d50d2e10c97cdc809ede0

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/923307/
  
Delivery method
Distributed via web download

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