MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5e92e39b866d490cdeb534eb04a5cb2ffc34231c29881af7921aad42965afd10. 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 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 5e92e39b866d490cdeb534eb04a5cb2ffc34231c29881af7921aad42965afd10
SHA3-384 hash: 05f4dfa0988f530d570db5a2663ac8f2c42c26ff5e4614dc7c3b543e49461d10dc61dc7ea13a915ede0558e07bbef39b
SHA1 hash: 973ba80c1c7f386721cc27db81eebbee7a64ac43
MD5 hash: b2fdf1f0e2245c9ba9f0f5ea2dea1b71
humanhash: bravo-washington-robin-fish
File name:RFQEMFA.Elektrik.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:255'644 bytes
First seen:2021-05-11 15:10:26 UTC
Last seen:2021-05-11 15:51:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ced282d9b261d1462772017fe2f6972b (127 x Formbook, 113 x GuLoader, 70 x RemcosRAT)
ssdeep 6144:L9X0GgVt/ShZYBT+hGIRBMRE7+Xh/AmFDtOWcRRxPFZ:l0VDahOBqhZy1oaDtOLXdZ
Threatray 1'909 similar samples on MalwareBazaar
TLSH 1F4412271332DDB7E06A0F715CB283CAAFE6604451A5138F8B947F393D32B93A12E941
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
79.134.225.17:2050

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
79.134.225.17:2050 https://threatfox.abuse.ch/ioc/8772/

Intelligence

File Origin
# of uploads :
2
# of downloads :
220
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/155153/
Detection(s):
SecuriteInfo.com.Gen.Variant.Androm.29.20883.4196.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Launching a process
Creating a file in the Program Files subdirectories
Sending a UDP request
Using the Windows Management Instrumentation requests
Deleting a recently created file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Unauthorized injection to a system process
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.
Gathering data
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/778770
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Found malware configuration
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)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 411172 Sample: RFQEMFA.Elektrik.exe Startdate: 11/05/2021 Architecture: WINDOWS Score: 100 39 Found malware configuration 2->39 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 7 other signatures 2->45 6 RFQEMFA.Elektrik.exe 1 20 2->6         started        10 aapt.exe 16 2->10         started        12 aapt.exe 16 2->12         started        process3 file4 23 C:\Users\user\AppData\Roaming\bakm\aapt.exe, PE32 6->23 dropped 25 C:\Users\user\AppData\Local\Temp\...\fuld.dll, PE32 6->25 dropped 47 Writes to foreign memory regions 6->47 49 Maps a DLL or memory area into another process 6->49 14 MSBuild.exe 1 11 6->14         started        27 C:\Users\user\AppData\Local\Temp\...\fuld.dll, PE32 10->27 dropped 51 Multi AV Scanner detection for dropped file 10->51 53 Machine Learning detection for dropped file 10->53 19 MSBuild.exe 3 10->19         started        29 C:\Users\user\AppData\Local\Temp\...\fuld.dll, PE32 12->29 dropped 21 MSBuild.exe 2 12->21         started        signatures5 process6 dnsIp7 35 79.134.225.17, 2050, 49721, 49728 FINK-TELECOM-SERVICESCH Switzerland 14->35 31 C:\Users\user\AppData\Roaming\...\run.dat, data 14->31 dropped 33 C:\Program Files (x86)\...\dhcpmon.exe, PE32 14->33 dropped 37 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->37 file8 signatures9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/5e92e39b866d490cdeb534eb04a5cb2ffc34231c29881af7921aad42965afd10/
Threat name:
Win32.Trojan.SpyNoon
Create hunting rule
Status:
Malicious
First seen:
2021-05-11 15:11:13 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
28 of 47 (59.57%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=l2johg4gnveqzxvvgtvqjjolf76diiy4fgebv54sdkwuffs27uia._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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cce5d9e4fd5ca9142510f3b21d0a73906171e90a815520985687dde13b6e643d
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e11f59ce9dae9fcff7ff4c8d3d119dd663a1918d084f8cda7b30c474cd141642
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e29e9d9beb5ce8187decf038cdc0b1d3102b4cfe43715a3b4f934098a943ebed
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f29b0b35d584de9410f3ffe75e8e4dbc6d90ecbc6f2c4d9382d8faf33e88d80b
NanoCore
+ 1'899 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/210511-f41j3y7dle/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
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
Loads dropped DLL
NanoCore
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/5e92e39b866d490cdeb534eb04a5cb2ffc34231c29881af7921aad42965afd10

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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/155153/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-05-11 16:01:10 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [B0001.032] Anti-Behavioral Analysis::Timing/Delay Check GetTickCount
1) [C0032.001] Data Micro-objective::CRC32::Checksum
2) [C0026.002] Data Micro-objective::XOR::Encode Data
5) [C0045] File System Micro-objective::Copy File
6) [C0046] File System Micro-objective::Create Directory
7) [C0048] File System Micro-objective::Delete Directory
8) [C0047] File System Micro-objective::Delete File
9) [C0049] File System Micro-objective::Get File Attributes
10) [C0051] File System Micro-objective::Read File
11) [C0050] File System Micro-objective::Set File Attributes
12) [C0052] File System Micro-objective::Writes File
13) [E1510] Impact::Clipboard Modification
14) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
15) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
16) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
17) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
18) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
19) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
20) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
21) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
22) [C0017] Process Micro-objective::Create Process
23) [C0038] Process Micro-objective::Create Thread
24) [C0018] Process Micro-objective::Terminate Process