MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513. 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: 8


Intelligence 8 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513
SHA3-384 hash: 1b73d63e2ae9ee373dd77f8f0f9b3a6893a60c325ea4184ccca3c00fa79eb5257c0468bf57a440eb4d87144966bc0b88
SHA1 hash: faca52ed321b32138883dfb7fe53aa42f06150b9
MD5 hash: e74426f4ab322e220a00be7558b892de
humanhash: december-fix-spaghetti-india
File name:e74426f4ab322e220a00be7558b892de.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:31'728 bytes
First seen:2020-12-15 07:58:24 UTC
Last seen:2020-12-15 09:47:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:ehjBU683UArcsdfO6bAT2GvQKuWkFgQlSUf2hc:mjBU683UArcsd26bAT2GvB1kXSUfp
Threatray 4 similar samples on MalwareBazaar
TLSH D4E2E895130CBF0AF5878731B603C1637B006AB6736B4BB1F432574DD982A946AABDC7
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore RAT C2:
rhbavzcmkopdhunbsgwtfcvzcxgjhyegvbcnmgte.ydns.eu:2486 (172.94.120.49)

Intelligence

File Origin
# of uploads :
2
# of downloads :
196
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
e74426f4ab322e220a00be7558b892de.exe
Verdict:
Malicious activity
Analysis date:
2020-12-15 08:01:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/819c638d-8d12-451d-b96b-2e5c158b5005

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/108100/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.45011673.20545.31231.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
Sending a UDP request
Launching the default Windows debugger (dwwin.exe)
Sending a TCP request to an infection source
Result
Verdict:
UNKNOWN
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/563075
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)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 330624 Sample: 6LrVLjE7hL.exe Startdate: 15/12/2020 Architecture: WINDOWS Score: 100 90 rhbavzcmkopdhunbsgwtfcvzcxgjhyegvbcnmgte.ydns.eu 2->90 92 cdn.onenote.net 2->92 104 Found malware configuration 2->104 106 Malicious sample detected (through community Yara rule) 2->106 108 Multi AV Scanner detection for dropped file 2->108 110 8 other signatures 2->110 11 6LrVLjE7hL.exe 15 3 2->11         started        15 6LrVLjE7hL.exe 3 2->15         started        17 dhcpmon.exe 2->17         started        signatures3 process4 dnsIp5 96 hastebin.com 104.24.126.89, 443, 49729, 49733 CLOUDFLARENETUS United States 11->96 114 Hides threads from debuggers 11->114 116 Injects a PE file into a foreign processes 11->116 19 6LrVLjE7hL.exe 1 12 11->19         started        24 WerFault.exe 23 9 11->24         started        26 cmd.exe 1 11->26         started        98 104.24.127.89, 443, 49732, 49737 CLOUDFLARENETUS United States 15->98 28 6LrVLjE7hL.exe 15->28         started        30 WerFault.exe 15->30         started        32 cmd.exe 15->32         started        34 cmd.exe 17->34         started        36 dhcpmon.exe 17->36         started        38 2 other processes 17->38 signatures6 process7 dnsIp8 94 rhbavzcmkopdhunbsgwtfcvzcxgjhyegvbcnmgte.ydns.eu 172.94.120.36, 2486 M247GB United States 19->94 76 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->76 dropped 78 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 19->78 dropped 80 C:\Users\user\AppData\Local\...\tmp6A23.tmp, XML 19->80 dropped 82 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 19->82 dropped 112 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->112 40 schtasks.exe 1 19->40         started        42 schtasks.exe 1 19->42         started        84 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 24->84 dropped 44 conhost.exe 26->44         started        46 timeout.exe 1 26->46         started        86 C:\Users\user\AppData\...\6LrVLjE7hL.exe.log, ASCII 28->86 dropped 88 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 30->88 dropped 48 conhost.exe 32->48         started        50 timeout.exe 32->50         started        52 timeout.exe 34->52         started        54 conhost.exe 34->54         started        file9 signatures10 process11 process12 56 conhost.exe 40->56         started        58 conhost.exe 42->58         started        60 dhcpmon.exe 52->60         started        dnsIp13 100 192.168.2.1 unknown unknown 60->100 102 hastebin.com 60->102 118 Hides threads from debuggers 60->118 120 Injects a PE file into a foreign processes 60->120 64 cmd.exe 60->64         started        66 dhcpmon.exe 60->66         started        68 dhcpmon.exe 60->68         started        70 WerFault.exe 60->70         started        signatures14 process15 process16 72 conhost.exe 64->72         started        74 timeout.exe 64->74         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-12-15 02:10:17 UTC
AV detection:
18 of 27 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tgxath4xhimslu763xz74ra35kytp6mdhpgyeweywer2p5x62ujq._file
Verdict:
unknown
Similar samples:
2919a5d96ade5e0f2967d98a7b49b1f612435ed6a6b3843424a8c1e99ea0e9ab
NanoCore
dc9b8828197d36f63999e8835193ef7bf23091fae5216c375059dc168432f3b9
NanoCore
de0b679c2ef7fca4486006bf6b96901a6cdd7ca42ae83498847735114a3bed17
NanoCore
e88c90bd34759e75f02ca1b3413916e7e3bab94daa1fbb540cf87cb79000164c
NanoCore
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/201215-kwn62mh1pj/
Behaviour
Delays execution with timeout.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513
MD5 hash:
e74426f4ab322e220a00be7558b892de
SHA1 hash:
faca52ed321b32138883dfb7fe53aa42f06150b9
Link:
https://www.unpac.me/results/9379be95-2c9f-4b89-a79e-57861f7c116e/
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/99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513

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.

Web download

NanoCore

Executable exe 99ae099f973a1925d3feddf3fe441beab137f9833bcd825898b123a7f6fed513

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/917854/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/108100/

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