MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ac81ad425d5c181006b6cce9ebdd5ab5fcca808df15736d9bcbf561d216e447. 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 8 File information Comments

SHA256 hash: 6ac81ad425d5c181006b6cce9ebdd5ab5fcca808df15736d9bcbf561d216e447
SHA3-384 hash: adab70d5ed57dda2e3c4c7aa92e50977a1e3899e331200860a7fa6219a460fce3c7ef2bcbcc814e7570f22142467393c
SHA1 hash: 41b0c23b3dddc5eb9d7fc74a02a61e32cc7567de
MD5 hash: adfaa77d969b7b8bcc990f3580d47558
humanhash: tennis-mountain-uniform-oklahoma
File name:ADFAA77D969B7B8BCC990F3580D47558.exe
Download: download sample
Signature NanoCore
File size:208'384 bytes
First seen:2021-07-16 13:15:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'452 x Formbook, 12'201 x SnakeKeylogger)
ssdeep 6144:WLV6Bta6dtJmakIM5Blsop1i6ZZEfEPxfQPO:WLV6Btpmk2so/FZZlxQPO
Threatray 2'255 similar samples on MalwareBazaar
TLSH T11914C0263BA98A2FE2DE86BD701202138379C2E399C3F3DE58D454B65F667E506071D3
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
188.213.25.188:54984

Indicators Of Compromise (IOCs)


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

IOCThreatFox Reference
188.213.25.188:54984 https://threatfox.abuse.ch/ioc/160776/

Intelligence


File Origin
# of uploads :
1
# of downloads :
177
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ADFAA77D969B7B8BCC990F3580D47558.exe
Verdict:
Malicious activity
Analysis date:
2021-07-16 13:25:54 UTC
Tags:
trojan nanocore rat

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
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.
Result
Threat name:
Nanocore
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Detected unpacking (overwrites its own PE header)
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sigma detected: NanoCore
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 449893 Sample: z3iswzhX1N.exe Startdate: 16/07/2021 Architecture: WINDOWS Score: 100 39 hackedbyplouk.ddns.net 2->39 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 13 other signatures 2->51 8 z3iswzhX1N.exe 1 17 2->8         started        13 dhcpmon.exe 3 2->13         started        15 z3iswzhX1N.exe 3 2->15         started        17 dhcpmon.exe 2 2->17         started        signatures3 process4 dnsIp5 41 hackedbyplouk.ddns.net 188.213.25.188, 49715, 49718, 49724 FIRSTHEBERGFR France 8->41 43 192.168.2.1 unknown unknown 8->43 27 C:\Program Files\DHCP Monitor\dhcpmon.exe, PE32 8->27 dropped 29 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 8->29 dropped 31 C:\Users\user\AppData\Local\...\tmp4845.tmp, XML 8->31 dropped 33 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 8->33 dropped 53 Detected unpacking (overwrites its own PE header) 8->53 55 Protects its processes via BreakOnTermination flag 8->55 57 Uses schtasks.exe or at.exe to add and modify task schedules 8->57 59 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->59 19 schtasks.exe 1 8->19         started        21 schtasks.exe 1 8->21         started        35 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 13->35 dropped 37 C:\Users\user\AppData\...\z3iswzhX1N.exe.log, ASCII 15->37 dropped file6 signatures7 process8 process9 23 conhost.exe 19->23         started        25 conhost.exe 21->25         started       
Threat name:
ByteCode-MSIL.Backdoor.NanoCore
Status:
Malicious
First seen:
2021-07-14 10:23:52 UTC
AV detection:
44 of 46 (95.65%)
Threat level:
  5/5
Result
Malware family:
nanocore
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan upx
Behaviour
Creates scheduled task(s)
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
Adds Run key to start application
Checks whether UAC is enabled
Reads user/profile data of web browsers
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
UPX packed file
NirSoft WebBrowserPassView
Nirsoft
NanoCore
Malware Config
C2 Extraction:
hackedbyplouk.ddns.net:54984
hackedbyplouk2.ddns.net:54984
Unpacked files
SH256 hash:
6ac81ad425d5c181006b6cce9ebdd5ab5fcca808df15736d9bcbf561d216e447
MD5 hash:
adfaa77d969b7b8bcc990f3580d47558
SHA1 hash:
41b0c23b3dddc5eb9d7fc74a02a61e32cc7567de
Detections:
win_nanocore_w0
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:Nanocore
Author:JPCERT/CC Incident Response Group
Description:detect Nanocore in memory
Reference:internal research
Rule name:nanocore_rat
Author:jeFF0Falltrades
Rule name:Nanocore_RAT_Feb18_1
Author:Florian Roth
Description:Detects Nanocore RAT
Reference:Internal Research - T2T
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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:win_nanocore_w0
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.

Comments