MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fca8e004262426185cff710c3f904ffe5fd13dbe8de480cbf1320fe565e5513d. 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 15 File information Comments

SHA256 hash: fca8e004262426185cff710c3f904ffe5fd13dbe8de480cbf1320fe565e5513d
SHA3-384 hash: 6ba8f5c9151fd9f0cd87599a9f672ab2afc27cd235d3f31f7d40149e6ec7e70fb258e2ab193cdbd5fecdde83f1e9e9a9
SHA1 hash: 168dce3f46ebc157f1ba2df60be774f294e5dfd9
MD5 hash: a12e34d671d1d18044109d7c972f582d
humanhash: mirror-saturn-dakota-sierra
File name:Outstanding Payment.exe
Download: download sample
Signature NanoCore
File size:1'202'176 bytes
First seen:2020-10-18 17:14:35 UTC
Last seen:2020-10-18 17:47:14 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:J4YC1Iz0ikIdQuYKDnTLjEw3XPAAHq7F51dvqA+mH:J4O0LIdsI/53XbK7Fpq
Threatray 1'545 similar samples on MalwareBazaar
TLSH E9457DB23C92587ECA6B077550A985C1FABA16C73FA48B0D71AF430C0F11A1BEB57257
Reporter abuse_ch
Tags:exe NanoCore RAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
150
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% subdirectories
Creating a window
Unauthorized injection to a recently created process
Launching a process
Result
Threat name:
Nanocore MailPassView Quasar
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus detection for dropped file
Binary contains a suspicious time stamp
Detected Nanocore Rat
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sample uses process hollowing technique
Sigma detected: NanoCore
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Tries to steal Mail credentials (via file registry)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected MailPassView
Yara detected Nanocore RAT
Yara detected Quasar RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 299797 Sample: Outstanding Payment.exe Startdate: 18/10/2020 Architecture: WINDOWS Score: 100 61 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for dropped file 2->65 67 18 other signatures 2->67 9 Outstanding Payment.exe 7 2->9         started        13 dhcpmon.exe 2->13         started        15 Client-built.exe 2->15         started        process3 file4 45 C:\Users\user\...\Outstanding Payment.exe.log, ASCII 9->45 dropped 47 C:\Users\user\AppData\Local\Temp\...\Xxl.dll, PE32 9->47 dropped 49 C:\Users\user\AppData\...\AgileDotNetRT.dll, PE32 9->49 dropped 83 Injects a PE file into a foreign processes 9->83 17 Outstanding Payment.exe 5 9->17         started        51 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 13->51 dropped signatures5 process6 file7 37 C:\Users\user\AppData\...\Client-built.exe, PE32 17->37 dropped 39 C:\Users\user\AppData\Local\Temp\Bin.exe, PE32 17->39 dropped 20 Bin.exe 2 13 17->20         started        25 Client-built.exe 15 4 17->25         started        process8 dnsIp9 55 3.131.207.170, 20027, 49773 AMAZON-02US United States 20->55 57 3.tcp.ngrok.io 18.220.222.33, 20027, 22918, 49770 AMAZON-02US United States 20->57 41 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->41 dropped 43 C:\Users\user\AppData\Roaming\...\run.dat, International 20->43 dropped 69 Antivirus detection for dropped file 20->69 71 Multi AV Scanner detection for dropped file 20->71 73 Machine Learning detection for dropped file 20->73 81 4 other signatures 20->81 27 vbc.exe 20->27         started        30 vbc.exe 20->30         started        59 ip-api.com 208.95.112.1, 49771, 80 TUT-ASUS United States 25->59 75 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 25->75 77 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->77 79 Installs a global keyboard hook 25->79 32 schtasks.exe 25->32         started        file10 signatures11 process12 dnsIp13 85 Tries to steal Mail credentials (via file registry) 27->85 87 Tries to steal Instant Messenger accounts or passwords 27->87 89 Tries to steal Mail credentials (via file access) 27->89 91 Tries to harvest and steal browser information (history, passwords, etc) 30->91 53 1.2.3.4 CLOUDFLARENETUS Australia 32->53 35 conhost.exe 32->35         started        signatures14 process15
Threat name:
ByteCode-MSIL.Trojan.Quasar
Status:
Malicious
First seen:
2020-10-18 10:33:10 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
evasion trojan keylogger stealer spyware family:nanocore persistence family:quasar
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Looks up external IP address via web service
Loads dropped DLL
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Executes dropped EXE
NanoCore
Quasar RAT
Malware Config
C2 Extraction:
3.tcp.ngrok.io:20027
Unpacked files
SH256 hash:
e0becb3532bd89ede90dc881735c824e66df23a639a21ecebdddc20b93e69da3
MD5 hash:
407ec810e825f2dfb808723bd5aaa372
SHA1 hash:
5497c6a174100ded672ddb76013d97bb806fe455
SH256 hash:
0e06308c84812b25e9d996a1aeade5af7516a47d786aebc2b85ee35612bfcb3e
MD5 hash:
0c02a760100d4fe435f2a1f04a982fba
SHA1 hash:
58a952d4f5debd6e92584c779a6127b263df5bca
SH256 hash:
c80bd60f5366ea9786742fc07216090c58e7a7194891c4eb04d7b71242a1a5f5
MD5 hash:
3b9bf02d84442e457b9e8f8804d8aab2
SHA1 hash:
a770b30f73cf8d306fa0e884937ffbaecf3c8ff7
SH256 hash:
c6847dd3e7b51ba63378e430441ce519a96bd35a1e37b5070b7a125f9b89af9d
MD5 hash:
b8268614109951c32f0a2c107b3c36f4
SHA1 hash:
cb3e4a013d82d1b85ef77f65d5671b6397162766
Detections:
win_nanocore_w0
SH256 hash:
f8bee4108a324df32ad5a2ebafa6b7f411402a21e2598cf9db66486970f80fdd
MD5 hash:
a92da98ff6f5ae608503d074617bcc2a
SHA1 hash:
d3eafcccca011bb3a7a5ae52dd9704ceafcde472
SH256 hash:
fca8e004262426185cff710c3f904ffe5fd13dbe8de480cbf1320fe565e5513d
MD5 hash:
a12e34d671d1d18044109d7c972f582d
SHA1 hash:
168dce3f46ebc157f1ba2df60be774f294e5dfd9
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:abuse.ch
Rule name:Chrome_stealer_bin_mem
Author:James_inthe_box
Description:Chrome in files like avemaria
Rule name:CN_disclosed_20180208_KeyLogger_1
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:Keylog_bin_mem
Author:James_inthe_box
Description:Contains Keylog
Rule name:MAL_QuasarRAT_May19_1
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MSILStealer
Author:https://github.com/hwvs
Description:Detects strings from C#/VB Stealers and QuasarRat
Reference:https://github.com/quasar/QuasarRAT
Rule name:Nanocore
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:Nanocore_RAT_Gen_2
Author:Florian Roth
Description:Detetcs the Nanocore RAT
Reference:https://www.sentinelone.com/blogs/teaching-an-old-rat-new-tricks/
Rule name:Quasar
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:Quasar_RAT_1
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Select_from_enumeration
Author:James_inthe_box
Description:IP and port combo
Rule name:Vermin_Keylogger_Jan18_1
Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:win_nanocore_w0
Author: Kevin Breen <kevin@techanarchy.net>
Rule name:xRAT_1
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W

File information


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

Malspam

NanoCore

Executable exe fca8e004262426185cff710c3f904ffe5fd13dbe8de480cbf1320fe565e5513d

(this sample)

  
Delivery method
Distributed via e-mail attachment

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