MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab. 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: 13


Intelligence 13 IOCs 1 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab
SHA3-384 hash: 1446cd0a8046153f1929b960c27dc51d5cf662440dac9e40037fc5a192fa768566fea9a5fd8a47745cee95575b7940ad
SHA1 hash: 2c40a86b6175e145bf037cbd935118f644baef2f
MD5 hash: 75f4f841771087f020b4b8ff04717773
humanhash: alanine-potato-april-alabama
File name:75f4f841771087f020b4b8ff04717773.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:902'656 bytes
First seen:2022-07-12 07:30:09 UTC
Last seen:2022-07-15 04:18:24 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:2PLK41m1geHGPUqxlMKtiNuVSR/WuDPdJqmdIne7dF2qIojjm9kGwYjtGNy/7p:xrFbqxltUcAeuzdYm+e7n2AssNa
Threatray 6'119 similar samples on MalwareBazaar
TLSH T19A15F126FE66CF65C25C0B36C4F70B58137496B2C202EF8F2BE516652C133A66D83AD5
TrID 64.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.5% (.SCR) Windows screen saver (13101/52/3)
9.2% (.EXE) Win64 Executable (generic) (10523/12/4)
5.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.9% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 18a219d4d4198a10 (20 x AgentTesla, 12 x Formbook, 10 x SnakeKeylogger)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
172.245.163.161:2049

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
172.245.163.161:2049 https://threatfox.abuse.ch/ioc/824577/

Intelligence

File Origin
# of uploads :
4
# of downloads :
336
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
75f4f841771087f020b4b8ff04717773.exe
Verdict:
Malicious activity
Analysis date:
2022-07-12 07:32:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e6a0d5ac-b085-430a-9db9-4fe35dec1754

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/286460/
Detection(s):
SecuriteInfo.com.Trojan.Olock.1.7523.29587.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
anti-vm packed
Link:
https://www.filescan.io/uploads/62cd233881790e51fe5a948d/reports/e7dc28fd-0357-40b0-8a0a-671ea962de88/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/97fc6ca1-7fa2-4e28-b6f7-5152fc019b40
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1029197
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 661692 Sample: utJdUxEuD3.exe Startdate: 12/07/2022 Architecture: WINDOWS Score: 100 79 Snort IDS alert for network traffic 2->79 81 Malicious sample detected (through community Yara rule) 2->81 83 Multi AV Scanner detection for dropped file 2->83 85 11 other signatures 2->85 8 utJdUxEuD3.exe 22 2->8         started        12 utJdUxEuD3.exe 2->12         started        14 dhcpmon.exe 2->14         started        16 dhcpmon.exe 2->16         started        process3 file4 59 C:\Users\user\AppData\Roaming\sRCSQK.exe, PE32 8->59 dropped 61 C:\Users\user\...\sRCSQK.exe:Zone.Identifier, ASCII 8->61 dropped 63 C:\Users\user\AppData\...\zfxk0im3.newcfg, XML 8->63 dropped 71 7 other malicious files 8->71 dropped 89 Uses schtasks.exe or at.exe to add and modify task schedules 8->89 91 Adds a directory exclusion to Windows Defender 8->91 18 utJdUxEuD3.exe 1 16 8->18         started        23 powershell.exe 25 8->23         started        25 schtasks.exe 1 8->25         started        65 C:\Users\user\AppData\...\user.config (copy), XML 12->65 dropped 67 C:\Users\user\AppData\...\rk5132u1.newcfg, XML 12->67 dropped 69 C:\Users\user\AppData\...\oibojnv2.newcfg, XML 12->69 dropped 73 4 other malicious files 12->73 dropped 27 WerFault.exe 12->27         started        29 powershell.exe 12->29         started        31 schtasks.exe 12->31         started        33 utJdUxEuD3.exe 12->33         started        signatures5 process6 dnsIp7 75 172.245.163.161, 2049, 49741, 49756 SERVER-MANIACA United States 18->75 77 192.168.2.1 unknown unknown 18->77 51 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->51 dropped 53 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->53 dropped 55 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->55 dropped 87 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->87 35 schtasks.exe 18->35         started        37 schtasks.exe 18->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        57 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 27->57 dropped 43 conhost.exe 29->43         started        45 conhost.exe 31->45         started        file8 signatures9 process10 process11 47 conhost.exe 35->47         started        49 conhost.exe 37->49         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab/
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2022-07-12 07:31:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
20 of 26 (76.92%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sbn25hlsohjsvegph46w2tvtp76r6hosapspun654mqlbrf7p6vq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
0289b5c2829170ad4bb04daedbd3db5e56474415aee109a91a66ba9fa8a7a179
NanoCore
05bc56cb159caab754c2731681c216692778a76a375742856512190728e24921
NanoCore
1fc4a0644a7d34526e2686b205e4d599d90e31c62f702468f26afffbadaff7c3
NanoCore
28a6aa59b2f5be44746d1faa1eb9ff8adf8f3cf14fa6c62ef166cdbe15d2434c
NanoCore
4969554ae58dff0a9d4dfa099c32f7ec0ed3af397bdacebe472aee8f0831898a
NanoCore
63f1b10c759ba99da98645bdc82e508012b7a6602945c991e42285d1e2ce7bf9
NanoCore
c8fb2b38dee96b9bf7b199c9ac198238826b00b48d00048e64f54656a814535c
NanoCore
e2910ca7a9cbd14fad956c01b59c56e941cff44b26aa12a786b5bd7d59cda533
NanoCore
+ 6'109 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer suricata trojan
Link:
https://tria.ge/reports/220712-jcc9dsahe2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks whether UAC is enabled
Checks computer location settings
NanoCore
suricata: ET MALWARE Possible NanoCore C2 60B
Malware Config
C2 Extraction:
172.245.163.161:2049
99light.ddns.net:2049
Unpacked files
SH256 hash:
6f4cda18157722edcd242e0c10cc18deea5aa3a349680aa8b157720dc8829993
MD5 hash:
c5a6bba1ea2cadec4cdf5477e62ea64b
SHA1 hash:
f4376d51073613df4951bf087c7af89997f59edc
Link:
https://www.unpac.me/results/237dd6a1-a6ae-4ff9-89fa-88bb64b6decb/
SH256 hash:
3e3638e33f67898e9bbacc217838a5db467f11a54fb59ec9c2e152506588bc29
MD5 hash:
a110b246aa98b642a1745a48c067a685
SHA1 hash:
ce1ba82570d931cae186575cc29a9ea7e0a6d8e5
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/237dd6a1-a6ae-4ff9-89fa-88bb64b6decb/
SH256 hash:
905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab
MD5 hash:
75f4f841771087f020b4b8ff04717773
SHA1 hash:
2c40a86b6175e145bf037cbd935118f644baef2f
Link:
https://www.unpac.me/results/237dd6a1-a6ae-4ff9-89fa-88bb64b6decb/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/905bae9d7271/report/overview.html
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/905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

NanoCore

Executable exe 905bae9d7271d32a90cf3f3d6d4eb37ffd1f1dd203e4fa37dde320b0c4bf7fab

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2256261/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/286460/

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