MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767
SHA3-384 hash: 49852a98bcff0d9e897c5af8919d05167025fe07e0b5683af545a2556b6601ac3771d2dd4eaab1a18d36f65b14023336
SHA1 hash: c5f2e80f53a312bd1b8dd3bba438af27a4ba44e3
MD5 hash: 26b17b353c8950ca0a55e1ea21678d9e
humanhash: jupiter-nineteen-blue-pennsylvania
File name:PO#4018-308875.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:716'800 bytes
First seen:2021-01-21 06:16:35 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 12288:jJ050jwcEc6t4HpTkJ23d9ZSn9Vt6DuUx:ji08cEc6t4HpAIZSnb
Threatray 232 similar samples on MalwareBazaar
TLSH 42E4E016638DCAB2D05D353B01AF09280393EDD7BAA1E24B676D3F7257372C53A1E489
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
Malspam distributing NanoCore:

HELO: bornsun.com
Sending IP: 104.129.26.159
From: 业务部（外）-罗秀兰 <sales312@bornsun.com>
Subject: Carlos Valdez Mato PO#4018-308875
Attachment: PO4018-308875.rar (contains "PO#4018-308875.exe")

NanoCore RAT C2:
fenixalec.ddns.net:20911 (185.162.88.26)

Intelligence

File Origin
# of uploads :
1
# of downloads :
168
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO#4018-308875.exe
Verdict:
Malicious activity
Analysis date:
2021-01-21 06:22:10 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/b8008563-c57d-4c24-a6cd-8f104aaa7b15

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/113211/
Detection(s):
SecuriteInfo.com.ArtemisTrojan.26755.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Running batch commands
Launching a process
Sending a UDP request
Creating a file in the %temp% directory
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created 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/586912
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-01-21 06:17:12 UTC
AV detection:
10 of 46 (21.74%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=io666u7y74gsmlbaq2sgyzwxn6gf4k456cczlhdquwr4m6khi5tq._file
Verdict:
suspicious
Similar samples:
761e77be2bbf6089f04b1901c44548bd4ff5ac873a74b1ca0e0604bb902eff22
NanoCore
83ee84084d628a921bd29b547f6767e17d8cd89a6132f9d717d5ccab7da72fbd
NanoCore
8b066067df73a77d2b21f65084a3d87868e11d4ae2ba3e039a7aa819b6245964
NanoCore
a3106e981a3c90e2512b5f67afdb8e8430fa3bc75cc11eab5541a7200ecd0fba
NanoCore
ae33318e53652eda0917a4f856ecf0041d8f57b73bf82bc6322921ea16654a04
NanoCore
b18e1e1ca2d4f97f568e87e71ae9f0791821c2c4e2bb3385fa81b5829c1122b1
NanoCore
b1c89b167239238aea8a718d40751a1233ab4b9479b19e6feb86ed5a4c9aec20
NanoCore
b22aed0458247b059e32aa4ffd4fcaf3ba7c097432fcbcbea9db7482899addbf
NanoCore
b303d3f820da914a39a9a859de14c201515377f31f6631c7e0384dbe44fca53c
NanoCore
fbc1e4ec22cd7339eb5fbc8d64320bb825f411e3c6ade350705586bfab4e1808
NanoCore
+ 222 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210121-4vqbbb89se/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Loads dropped DLL
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
185.162.88.26:20911
fenixalec.ddns.net:20911
Unpacked files
SH256 hash:
a60900adc31e8e28ff541b91a55de5d9719c0d1ddc3022eb6f6fb5ac19cc9e4f
MD5 hash:
831fb0609b3509b4fb31ac662ac69217
SHA1 hash:
985c33fa2b01e305995e2ea166b961b01f0f6335
Link:
https://www.unpac.me/results/b5eee3d7-a96b-40fc-80b2-3f068f421c13/
SH256 hash:
4f81e273da20c5b9835ce6ca57cc061d77764f9e3927bdb1505cb791bf50b046
MD5 hash:
29e19b5dce96140a8b90152b16bd44af
SHA1 hash:
4f3dc6eb876bb58f53966980a9c451a04ec17d8a
Link:
https://www.unpac.me/results/b5eee3d7-a96b-40fc-80b2-3f068f421c13/
SH256 hash:
4fbb56f5dc4e483df10bcd44d45bac4db5577be7ddf20a4e6c7957a5b271f0af
MD5 hash:
7f0eaa932643cecaa67e3cc6ed800ed6
SHA1 hash:
123360e62fb1d1e9e9f64b742cc2240041294752
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/b5eee3d7-a96b-40fc-80b2-3f068f421c13/
Parent samples :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 hash:
43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767
MD5 hash:
26b17b353c8950ca0a55e1ea21678d9e
SHA1 hash:
c5f2e80f53a312bd1b8dd3bba438af27a4ba44e3
Link:
https://www.unpac.me/results/b5eee3d7-a96b-40fc-80b2-3f068f421c13/
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/43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767

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: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.

Malspam

NanoCore

rar 79cfffb4d6f556083fe9b8057490a9cbc22c2aef4c1deb591ccd54e19846a0c0

NanoCore

Executable exe 43bdef53f8ff0d262c2086a46c66d76f8c5e2b9df085959c70a5a3c679474767

(this sample)

  
Dropped by
MD5 40b531df68a461f51f88e2d1ec674e4d
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 79cfffb4d6f556083fe9b8057490a9cbc22c2aef4c1deb591ccd54e19846a0c0
Cape
Cape
https://www.capesandbox.com/analysis/113211/

Comments