MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1778a255b790b18f042384c6ebb3176d3f3f0fd172d313b07242ac42b000132e. 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: 9


Intelligence 9 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1778a255b790b18f042384c6ebb3176d3f3f0fd172d313b07242ac42b000132e
SHA3-384 hash: 47bc45baf247a4ddb17eb3bab5f1ed4466e7c34834082ebb7e70f4cb6256ce40d27dafc1e0da6de8def0172a41dec470
SHA1 hash: 4623be14eeb5a3d625f3bd8d76644133bba21925
MD5 hash: 549e7f845117790309446949d7eaae7c
humanhash: maine-five-tennis-georgia
File name:SUR BL 00957WE .exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:557'568 bytes
First seen:2020-09-18 13:38:32 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:oUGBb2U1v2zv1gVJAMugu0bU8xCiJSKIKSg:Wrc2zrU8xCUXSg
Threatray 1'072 similar samples on MalwareBazaar
TLSH FEC4E0304E491A5BDDBDE07805C141B0E2F297625222FFAD7DA460EEB6C27D1437EB89
Reporter James_inthe_box
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
175
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.VFR-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
DNS request
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Connection attempt to an infection source
Enabling autorun by creating a file
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/469985
Signature
.NET source code contains potential unpacker
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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
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
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 287421 Sample: SUR BL 00957WE .exe Startdate: 18/09/2020 Architecture: WINDOWS Score: 100 68 cdn.onenote.net 2->68 72 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 Multi AV Scanner detection for dropped file 2->76 78 12 other signatures 2->78 9 SUR BL 00957WE .exe 7 2->9         started        13 dhcpmon.exe 5 2->13         started        15 SUR BL 00957WE .exe 4 2->15         started        17 dhcpmon.exe 2->17         started        signatures3 process4 file5 60 C:\Users\user\AppData\...\XRgItgAeBZGif.exe, PE32 9->60 dropped 62 C:\...\XRgItgAeBZGif.exe:Zone.Identifier, ASCII 9->62 dropped 64 C:\Users\user\AppData\Local\...\tmp86E7.tmp, XML 9->64 dropped 66 C:\Users\user\...\SUR BL 00957WE .exe.log, ASCII 9->66 dropped 82 Injects a PE file into a foreign processes 9->82 19 SUR BL 00957WE .exe 1 15 9->19         started        24 schtasks.exe 1 9->24         started        26 schtasks.exe 13->26         started        28 dhcpmon.exe 13->28         started        30 schtasks.exe 15->30         started        32 SUR BL 00957WE .exe 15->32         started        34 schtasks.exe 17->34         started        36 dhcpmon.exe 17->36         started        signatures6 process7 dnsIp8 70 ruffella.ddns.net 79.134.225.106, 1122, 49725 FINK-TELECOM-SERVICESCH Switzerland 19->70 54 C:\Program Files (x86)\...\dhcpmon.exe, PE32 19->54 dropped 56 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 19->56 dropped 58 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 19->58 dropped 80 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->80 38 schtasks.exe 1 19->38         started        40 schtasks.exe 1 19->40         started        42 conhost.exe 24->42         started        44 conhost.exe 26->44         started        46 conhost.exe 30->46         started        48 conhost.exe 34->48         started        file9 signatures10 process11 process12 50 conhost.exe 38->50         started        52 conhost.exe 40->52         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/1778a255b790b18f042384c6ebb3176d3f3f0fd172d313b07242ac42b000132e/
Threat name:
ByteCode-MSIL.Trojan.Agentesla
Create hunting rule
Status:
Malicious
First seen:
2020-09-18 13:38:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=c54kevnxscyy6bbdqtdoxmyxnu7t6d6roljrhmdsikwefmaacmxa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
24683ff5c436b2b56e96268ba4c591e8f80e9995623a0a1f6e6c7adf5bd2a62c
NanoCore
2a9cf930b5e11dee35842ff73179a0467f820a95e23560d774f7ea05111de351
NanoCore
38701fe4b63d1436ba2e26cc7e268327299b58bcccbf074bfb2cbbcf57ceb2ea
NanoCore
38814f6587d098be00d461dae2dfeb01b50e2a697d86bfc02e334024133bfed8
NanoCore
4d13350ebf3d38475a0a4a8c223fe6c06e00af3585eb499f60e29639b3944d3f
NanoCore
6eb10ca3e8026756f417b8e04510f768c28175817c73be8f21514dfb186d687f
NanoCore
756fde810887452ab2533283973f2e582df198988bcafde9f20dc85e35f4d5c4
NanoCore
9de706b1203364aae5f475621ec5855b8163adc972693b40446fb6ba82b19209
NanoCore
b3fd83d19a65a806d17f9c5245b94d7499e711f56814a2d1fe4ae62474315781
NanoCore
d0a9cde7ebed2daf4306e0e76a341e6c4293bf9904ed464f5bfcb462dc0999d0
NanoCore
+ 1'062 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore persistence
Link:
https://tria.ge/reports/200918-9blqqb76mj/
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
Checks whether UAC is enabled
NanoCore
Malware Config
C2 Extraction:
ruffella.ddns.net:1122
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/1778a255b790b18f042384c6ebb3176d3f3f0fd172d313b07242ac42b000132e

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_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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/63430/

Comments