MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd. 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 YARA 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd
SHA3-384 hash: e1b0a3697faa70a3cc9e41e607b56425e189a63c74b1e7ac227505f15e0d989b347f67e0c0cc155da95a31d9591eee11
SHA1 hash: 9b24f649e2213bcb3d3153bde48439ee21798630
MD5 hash: dee80f55d6bfd6645d9835d9fac1f59c
humanhash: mexico-twenty-september-california
File name:DEE80F55D6BFD6645D9835D9FAC1F59C.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:1'106'118 bytes
First seen:2024-02-17 16:05:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 12e12319f1029ec4f8fcbed7e82df162 (389 x DCRat, 52 x RedLineStealer, 51 x Formbook)
ssdeep 24576:YTbBv5rUinwAb7RJVx0y7QiRiMTGtR8B/hIdNCXYzJk:aB7nV/T/0kiMTGoB/hWm
TLSH T16A351202BED154B2D4A309325A756B10A9BDBD300FA68ECF53D08D9EDE216C1D7367B2
TrID 89.0% (.EXE) WinRAR Self Extracting archive (4.x-5.x) (265042/9/39)
3.5% (.EXE) Win64 Executable (generic) (10523/12/4)
2.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
1.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
1.5% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 746c6c6c6c6c6c60 (1 x NanoCore)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
192.169.69.26:64418

Intelligence

File Origin
# of uploads :
1
# of downloads :
558
Origin country :
NL NL
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/476600/
Detection(s):
Win.Dropper.Nanocore-10020728-0
Create hunting rule

SecuriteInfo.com.Trojan.GenericKD.38920448.13962.7593.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Searching for the window
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a UDP request
Creating a file
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Connection attempt to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
89%
Tags:
anti-vm fingerprint installer keylogger lolbin nanocore overlay packed scar setupapi sfx shdocvw shell32
Link:
https://www.filescan.io/uploads/65d0d96b26f1ddc5799ccc1f/reports/f58871de-6716-431a-a6d4-7ff9359be32f/overview
Verdict:
Malicious
Labled as:
Trojan.Uztuby
Link:
https://www.hybrid-analysis.com/sample/a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/17f5eb4a-41e9-4072-8c3c-ed9aa88ec3b7
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1393928
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found API chain indicative of sandbox detection
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Invoke-Obfuscation CLIP+ Launcher
Sigma detected: Invoke-Obfuscation VAR+ Launcher
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Double Extension Files
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses ipconfig to lookup or modify the Windows network settings
Uses schtasks.exe or at.exe to add and modify task schedules
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM autoit script
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1393928 Sample: 4MknBqpM97.exe Startdate: 17/02/2024 Architecture: WINDOWS Score: 100 91 december2nd.ddns.net 2->91 93 december2n.duckdns.org 2->93 99 Multi AV Scanner detection for domain / URL 2->99 101 Found malware configuration 2->101 103 Malicious sample detected (through community Yara rule) 2->103 107 18 other signatures 2->107 12 4MknBqpM97.exe 3 42 2->12         started        15 bgdkvivi.pdf.exe 2->15         started        18 bgdkvivi.pdf.exe 2->18         started        20 4 other processes 2->20 signatures3 105 Uses dynamic DNS services 93->105 process4 file5 79 C:\Users\user\AppData\Local\...\bgdkvivi.pdf, PE32 12->79 dropped 81 C:\Users\user\AppData\Local\Temp\...\njbs.vbe, Unicode 12->81 dropped 22 wscript.exe 1 12->22         started        129 Multi AV Scanner detection for dropped file 15->129 131 Detected Nanocore Rat 15->131 133 Found API chain indicative of sandbox detection 15->133 25 RegSvcs.exe 15->25         started        135 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 18->135 137 Writes to foreign memory regions 18->137 139 Allocates memory in foreign processes 18->139 27 RegSvcs.exe 18->27         started        141 Injects a PE file into a foreign processes 20->141 29 conhost.exe 20->29         started        31 conhost.exe 20->31         started        33 conhost.exe 20->33         started        35 RegSvcs.exe 20->35         started        signatures6 process7 signatures8 109 Windows Scripting host queries suspicious COM object (likely to drop second stage) 22->109 37 cmd.exe 1 22->37         started        39 cmd.exe 1 22->39         started        42 cmd.exe 1 22->42         started        111 Detected Nanocore Rat 25->111 process9 signatures10 44 bgdkvivi.pdf 1 40 37->44         started        48 conhost.exe 37->48         started        113 Uses ipconfig to lookup or modify the Windows network settings 39->113 50 conhost.exe 39->50         started        52 ipconfig.exe 1 39->52         started        54 conhost.exe 42->54         started        56 ipconfig.exe 1 42->56         started        process11 file12 83 C:\Users\user\xwwd\bgdkvivi.pdf.exe, PE32 44->83 dropped 85 C:\Users\user\xwwd\bgdkvivi.pdf, PE32 44->85 dropped 87 C:\Users\user\AppData\...\bgdkvivi.pdf.exe, PE32 44->87 dropped 89 C:\Users\user\AppData\Local\...\RegSvcs.exe, PE32 44->89 dropped 121 Multi AV Scanner detection for dropped file 44->121 123 Detected Nanocore Rat 44->123 125 Found API chain indicative of sandbox detection 44->125 127 4 other signatures 44->127 58 RegSvcs.exe 1 11 44->58         started        signatures13 process14 dnsIp15 95 december2n.duckdns.org 192.169.69.26, 49733, 49735, 49736 WOWUS United States 58->95 97 december2nd.ddns.net 197.210.79.33, 64418 VCG-ASNG Nigeria 58->97 73 C:\Users\user\AppData\Roaming\...\run.dat, OpenPGP 58->73 dropped 75 C:\Users\user\AppData\Local\...\tmp4693.tmp, XML 58->75 dropped 77 C:\Program Files (x86)\DNS Host\dnshost.exe, PE32 58->77 dropped 115 Detected Nanocore Rat 58->115 117 Uses schtasks.exe or at.exe to add and modify task schedules 58->117 119 Hides that the sample has been downloaded from the Internet (zone.identifier) 58->119 63 schtasks.exe 1 58->63         started        65 schtasks.exe 1 58->65         started        67 WerFault.exe 58->67         started        file16 signatures17 process18 process19 69 conhost.exe 63->69         started        71 conhost.exe 65->71         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd/
Threat name:
Win32.Trojan.Uztuby
Create hunting rule
Status:
Malicious
First seen:
2024-02-13 13:33:00 UTC
File Type:
PE (Exe)
Extracted files:
59
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vfhp2l6uuopfievooetckbjsdj3kzth35xjltkqec5zboqf6np6q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240217-tj267sha79/
Behaviour
Creates scheduled task(s)
Gathers network information
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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
Executes dropped EXE
Loads dropped DLL
NanoCore
Malware Config
C2 Extraction:
december2n.duckdns.org:64418
december2nd.ddns.net:64418
Unpacked files
SH256 hash:
7bf426c11ea43614ef02e5373de0e53f54e785342d56c13182daa2849e9e3776
MD5 hash:
92516c99ab73f54438bbed424a2f165f
SHA1 hash:
31d49d7d8424ac308a4c1d6b1e176f355a86d4e7
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/d64ff8fe-1f30-4554-95da-3966ac8dc89a/
Parent samples :
22b87205ec9b3ad2d29c4d48e8c895d72318a497b327ff7cab3ea0da5034e055
64f7f22452241592c6dc0e2c8e0f2cf44b52da13f9330e8c73211eb8e2d27906
7f24051d8ea086ac0d78f5cb8e0f127140aee0ec0ca7a9e3137dbae04b76dd70
a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd
da7842d0d6c33bc7faa51b5a0cb5cbb1d794091b79c4aa020166c2a7bd524b55
0ff02d4a400853d0569a43b93c05fcce01438ae71978eed25fd011e328a00a4f
SH256 hash:
a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd
MD5 hash:
dee80f55d6bfd6645d9835d9fac1f59c
SHA1 hash:
9b24f649e2213bcb3d3153bde48439ee21798630
Link:
https://www.unpac.me/results/d64ff8fe-1f30-4554-95da-3966ac8dc89a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a94efd2fd4a3/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/a94efd2fd4a39e5412ae71262505321a76acccfbedd2b9aa0417721740be6bfd

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_Nanocore_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:MALWARE_Win_NanoCore
Create hunting rule
Author:ditekSHen
Description:Detects NanoCore
Rule name:nanocore_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
Rule name:Nanocore_RAT_Feb18_1_RID2DF1
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 (Nextron Systems)
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Nanocore_RAT_Gen_2_RID2D96
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:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SelfExtractingRAR
Create hunting rule
Author:Xavier Mertens
Description:Detects an SFX archive with automatic script execution
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Trojan_Nanocore_d8c4e3c5
Create hunting rule
Author:Elastic Security
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/476600/

Comments