MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5be9580e694c462cf0259c7a4220b1efe737fb7f85241668288b3c7293eb0c4. 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: 11


Intelligence 11 IOCs 1 YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5be9580e694c462cf0259c7a4220b1efe737fb7f85241668288b3c7293eb0c4
SHA3-384 hash: c22e7ce619766b5f7309e66d6b2b6b012bebbe8c7f64ff22996ed959268705c98981d1ef7d3a76763503c331121c58d5
SHA1 hash: fb8fe993d3d55c8d5831301a06142b63fed90e97
MD5 hash: 6d4d21e4560eb6c721fb52689fc3ab84
humanhash: skylark-saturn-six-butter
File name:6d4d21e4560eb6c721fb52689fc3ab84.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:684'544 bytes
First seen:2022-04-04 08:31:32 UTC
Last seen:2022-04-04 09:41:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:BpRpBZ8hFFJ2e++MOarJDGgI6OTV0bQmmLI9kUtQVQRtRWV:rj8MrOarJSh6Y3mmLI+uQuR
Threatray 3'920 similar samples on MalwareBazaar
TLSH T1E6E4E115F2A2CC21DE980337C4E2D4780336BE82653BCB1F39DA2E677A5379B5940B56
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
79.134.225.76:1515

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
79.134.225.76:1515 https://threatfox.abuse.ch/ioc/488463/

Intelligence

File Origin
# of uploads :
2
# of downloads :
914
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/260406/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.39391053.3906.17361.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
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
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
control.exe greyware obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/624aad03db9ca5cf8419f710/reports/571f4e36-f38b-4b82-a090-2e50c75bcc14/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/ae14ce02-3ace-41b6-9d6d-d65df77c8aad
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/969817
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
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)
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: Suspicious Add Scheduled Task From User AppData Temp
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 AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 602304 Sample: Oj6XvJ81mM.exe Startdate: 04/04/2022 Architecture: WINDOWS Score: 100 48 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 14 other signatures 2->54 7 Oj6XvJ81mM.exe 7 2->7         started        11 dhcpmon.exe 5 2->11         started        process3 file4 32 C:\Users\user\AppData\...\PQUfxrJEgkU.exe, PE32 7->32 dropped 34 C:\Users\...\PQUfxrJEgkU.exe:Zone.Identifier, ASCII 7->34 dropped 36 C:\Users\user\AppData\Local\...\tmp1147.tmp, XML 7->36 dropped 38 C:\Users\user\AppData\...\Oj6XvJ81mM.exe.log, ASCII 7->38 dropped 56 Uses schtasks.exe or at.exe to add and modify task schedules 7->56 58 Adds a directory exclusion to Windows Defender 7->58 60 Injects a PE file into a foreign processes 7->60 13 Oj6XvJ81mM.exe 1 10 7->13         started        18 powershell.exe 25 7->18         started        20 schtasks.exe 1 7->20         started        22 schtasks.exe 11->22         started        24 dhcpmon.exe 11->24         started        signatures5 process6 dnsIp7 46 boboz.ddns.net 79.134.225.76, 1515, 49750, 49754 FINK-TELECOM-SERVICESCH Switzerland 13->46 40 C:\Program Files (x86)\...\dhcpmon.exe, PE32 13->40 dropped 42 C:\Users\user\AppData\Roaming\...\run.dat, data 13->42 dropped 44 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 13->44 dropped 62 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->62 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        30 conhost.exe 22->30         started        file8 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5be9580e694c462cf0259c7a4220b1efe737fb7f85241668288b3c7293eb0c4/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-31 00:45:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
23 of 42 (54.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ww7jlahgstcgftyclhd2iiqld37hg75x7bjeczucrcz4okj6wdca._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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NanoCore
114ab70a1c3b950b73a44506928eb27616aea58f68cd1eaf0cbe0e44a7aea3f4
NanoCore
1bc8d97f5be4fd72080fbec129ecb6ab776fd894993a7ffb7ab84ceaf26e2099
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573b1dd9da735c7ca71132db9e6e8cb9fb5c8293b2f185d10b877ed33a203e2f
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646e7dd2bba008392792aa442f895d5747a1bdc0fa4531fb405e28518b9f9e8b
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8f4007f0c6f570327d5026756b4a48c8a776a6a9516b28a83913307d3db760f7
NanoCore
+ 3'910 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/220404-ke9wtaghar/
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
Unexpected DNS network traffic destination
NanoCore
suricata: ET MALWARE Possible NanoCore C2 60B
Malware Config
C2 Extraction:
boboz.ddns.net:1515
127.0.0.1:1515
Unpacked files
SH256 hash:
b5be9580e694c462cf0259c7a4220b1efe737fb7f85241668288b3c7293eb0c4
MD5 hash:
6d4d21e4560eb6c721fb52689fc3ab84
SHA1 hash:
fb8fe993d3d55c8d5831301a06142b63fed90e97
Link:
https://www.unpac.me/results/0b59674a-b0d0-438f-a902-8392e8e042f7/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b5be9580e694/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/b5be9580e694c462cf0259c7a4220b1efe737fb7f85241668288b3c7293eb0c4

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: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
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
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: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/260406/

Comments