MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 be86e9fd2d5913526b7cea3bec1ad8c84acea8cab73ea78414e6317565f3079b. 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 1 YARA 8 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: be86e9fd2d5913526b7cea3bec1ad8c84acea8cab73ea78414e6317565f3079b
SHA3-384 hash: 6953f23186102bc4c8751677e0459cbda4b40ceec2164f533eb4cd1618f35fee8ae2d39bc6d3cf7f23267eff767e6f76
SHA1 hash: c0e84d7e2335e282befebd3707bfcc87079033d4
MD5 hash: 4cda43c8b436c22fea2b66fad7f5bfe8
humanhash: bluebird-cardinal-four-romeo
File name:Purchase Order-877.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'010'176 bytes
First seen:2021-04-01 10:27:34 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'648 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 12288:I40F8fLcclBL/9thzJU1j+wKGQ/mT73uRffL0Zq:I4lccHM1iwXrT
Threatray 2'056 similar samples on MalwareBazaar
TLSH 5125AD1A3B646F8CC4AF17395458900C9FA77D59AE82C3C27E9A3FDB7072F1206A4653
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
185.191.231.252:38884

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
185.191.231.252:38884 https://threatfox.abuse.ch/ioc/6025/

Intelligence

File Origin
# of uploads :
1
# of downloads :
127
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Purchase Order-877.exe
Verdict:
Malicious activity
Analysis date:
2021-04-01 10:31:04 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/da57c1c5-4ca6-470e-8ef0-2d59383059d1

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/130565/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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/662070
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
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)
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
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 dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 379971 Sample: Purchase Order-877.exe Startdate: 01/04/2021 Architecture: WINDOWS Score: 100 49 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 Sigma detected: Scheduled temp file as task from temp location 2->53 55 9 other signatures 2->55 8 Purchase Order-877.exe 3 2->8         started        12 dhcpmon.exe 4 2->12         started        14 dhcpmon.exe 3 2->14         started        16 MSBuild.exe 2 2->16         started        process3 file4 43 C:\Users\user\...\Purchase Order-877.exe.log, ASCII 8->43 dropped 63 Writes to foreign memory regions 8->63 65 Allocates memory in foreign processes 8->65 67 Injects a PE file into a foreign processes 8->67 18 MSBuild.exe 1 14 8->18         started        23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        27 conhost.exe 16->27         started        signatures5 process6 dnsIp7 45 holyboys.ddns.net 185.191.231.252, 38884, 49712, 49713 UNREAL-SERVERSUS Netherlands 18->45 47 192.168.2.1 unknown unknown 18->47 37 C:\Users\user\AppData\Roaming\...\run.dat, data 18->37 dropped 39 C:\Users\user\AppData\Local\...\tmpE429.tmp, XML 18->39 dropped 41 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->41 dropped 57 Protects its processes via BreakOnTermination flag 18->57 59 Uses schtasks.exe or at.exe to add and modify task schedules 18->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->61 29 schtasks.exe 1 18->29         started        31 schtasks.exe 1 18->31         started        file8 signatures9 process10 process11 33 conhost.exe 29->33         started        35 conhost.exe 31->35         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/be86e9fd2d5913526b7cea3bec1ad8c84acea8cab73ea78414e6317565f3079b/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2021-04-01 10:24:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
12 of 48 (25.00%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=x2dot7jnlejve2345i56ygwyzbfm5kgkw47kpbau4yyxkzpta6nq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
+ 2'046 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/210401-p24hs8j6tj/
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:
holyboys.ddns.net:38884
185.191.231.252:38884
Unpacked files
SH256 hash:
276a1a0800999b80d42105000217a70fb36f6ec451518c0fc179498c6700f389
MD5 hash:
a596b0e8f6f938943653dfa448a03bb1
SHA1 hash:
12508a85cdd84419e7122be37547fef716f0c40e
Link:
https://www.unpac.me/results/42cb756e-8ae5-4aef-ab50-a5c5b416b054/
SH256 hash:
be86e9fd2d5913526b7cea3bec1ad8c84acea8cab73ea78414e6317565f3079b
MD5 hash:
4cda43c8b436c22fea2b66fad7f5bfe8
SHA1 hash:
c0e84d7e2335e282befebd3707bfcc87079033d4
Link:
https://www.unpac.me/results/42cb756e-8ae5-4aef-ab50-a5c5b416b054/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/be86e9fd2d5913526b7cea3bec1ad8c84acea8cab73ea78414e6317565f3079b

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:INDICATOR_SUSPICIOUS_EXE_RawGitHub_URL
Create hunting rule
Author:ditekSHen
Description:Detects executables containing URLs to raw contents of a Github gist
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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.

Cape
Cape
https://www.capesandbox.com/analysis/130565/

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