MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef35e9ee19b48afad15e3a49ba0df682604fe2412830b6f4ac06f2119d57b953. 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 YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef35e9ee19b48afad15e3a49ba0df682604fe2412830b6f4ac06f2119d57b953
SHA3-384 hash: cc781bd70d9227297ca9b5cb5a87eb43566d896e6e36fe3bbdf592f76d5f6c334a9ea995fda3d0956c2dd4cfe74fa696
SHA1 hash: e4f0dc0ace301b49f3f4d7ca62b46e0a732cfe93
MD5 hash: 229ea14cb263a8de17a81aa6aecc8a39
humanhash: ack-enemy-summer-jersey
File name:PROFORMA INVOICE - 20 - 195.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:539'741 bytes
First seen:2021-04-27 12:55:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ea4e67a31ace1a72683a99b80cf37830 (70 x Formbook, 63 x GuLoader, 54 x Loki)
ssdeep 6144:2PXYC1VmdyOHOcp1D+0RhKm/TeToW6gGFXB4X0VCQcYLkCwO3anknnQ8NJAPw4nV:XC70ZD9RhrTestFGEV/LkCwGklsJADV
Threatray 2'544 similar samples on MalwareBazaar
TLSH 6CB4CED7E55184E8FC2A43B1543B6C3F0663B5BD85BC094E52AD72312BA3E9E8037A17
Reporter James_inthe_box
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
1
# of downloads :
121
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PROFORMA INVOICE - 20 - 195.exe
Verdict:
Malicious activity
Analysis date:
2021-04-27 13:06:05 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/eacda37d-e62a-40d6-ac09-83ca6474e919

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/144582/
Detection(s):
Win.Malware.Filerepmetagen-9855920-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Unauthorized injection to a recently created process
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the Program Files subdirectories
Launching a process
Deleting a recently created file
DNS request
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Sending a TCP request to an infection source
Enabling autorun by creating a file
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/699038
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
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
Sigma detected: Scheduled temp file as task from temp location
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:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 398437 Sample: PROFORMA INVOICE - 20 - 195.exe Startdate: 27/04/2021 Architecture: WINDOWS Score: 100 61 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 17 other signatures 2->67 8 PROFORMA INVOICE - 20 - 195.exe 19 2->8         started        12 PROFORMA INVOICE - 20 - 195.exe 17 2->12         started        14 dhcpmon.exe 17 2->14         started        16 dhcpmon.exe 17 2->16         started        process3 file4 49 C:\Users\user\AppData\...\jj8qnf70ty.dll, PE32 8->49 dropped 71 Maps a DLL or memory area into another process 8->71 18 PROFORMA INVOICE - 20 - 195.exe 1 13 8->18         started        51 C:\Users\user\AppData\...\jj8qnf70ty.dll, PE32 12->51 dropped 23 PROFORMA INVOICE - 20 - 195.exe 3 12->23         started        53 C:\Users\user\AppData\...\jj8qnf70ty.dll, PE32 14->53 dropped 25 dhcpmon.exe 3 14->25         started        55 C:\Users\user\AppData\...\jj8qnf70ty.dll, PE32 16->55 dropped 27 dhcpmon.exe 2 16->27         started        signatures5 process6 dnsIp7 57 haash.duckdns.org 185.244.30.174, 49706, 49709, 49716 DAVID_CRAIGGG Netherlands 18->57 59 192.168.2.1 unknown unknown 18->59 37 C:\Program Files (x86)\...\dhcpmon.exe, PE32 18->37 dropped 39 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 18->39 dropped 41 C:\Users\user\AppData\Local\...\tmpB0FB.tmp, XML 18->41 dropped 43 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 18->43 dropped 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->69 29 schtasks.exe 1 18->29         started        31 schtasks.exe 1 18->31         started        45 C:\...\PROFORMA INVOICE - 20 - 195.exe.log, ASCII 23->45 dropped 47 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 25->47 dropped file8 signatures9 process10 process11 33 conhost.exe 29->33         started        35 conhost.exe 31->35         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ef35e9ee19b48afad15e3a49ba0df682604fe2412830b6f4ac06f2119d57b953/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2021-04-27 11:13:45 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=5426t3qzwsfpvuk6hje3udpwqjqe7ysbfayln5fma3zbdhkxxfjq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
00343ef156007c41a76abebe2b0304aacc7e2b12e0d30ea476ecf8c847a54dfc
NanoCore
0559b801a2f46ef7c8566900b2b8c3e1b01a162069e543aff364f4904db8926b
NanoCore
18ca07a540dbd6da66851f88c11ad7683486e33f5c2512fe5c4837c44f8f4bc3
NanoCore
3f6f1635ca9660f24bf4e9527ec6136ed50ad9a8a88e442768143d55eb73a6af
NanoCore
41617ac4431c229ba27bf94617b465309e7f502ae5088cd12ee571a0428ea120
NanoCore
52b5f2f95b1200b20a6f3adfcb93c6f87713155f83176dede353ee158c7c1b63
NanoCore
5b474ca6fc8158bd6f14d53bca8962f25db3392dfe324f49ddf376610bd785e4
NanoCore
c9b860013650a0c0e6f33841fd050d6af538f94fafce33c33ec65a05ba7ba3dd
NanoCore
de0fa842d520e025262cbd93a9523bee414f8ceb7d79a73da2b2f133fc01346f
NanoCore
fb01157b437b00f34999faa320bb55c8e44bdbb415e9a15503035bfe0e1d40d6
NanoCore
+ 2'534 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210427-awwy35rnxj/
Behaviour
Creates scheduled task(s)
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
Checks whether UAC is enabled
Loads dropped DLL
NanoCore
Malware Config
C2 Extraction:
haash.duckdns.org:7899
Unpacked files
SH256 hash:
0e31415336ad940febe566ac12364dbd041a8ff45405bd3aab5492a1c3800bff
MD5 hash:
1de697d9df695545ad0a28fdac06d866
SHA1 hash:
7150443cee4aae161ce2282f1bfc419b70ad6f8e
Link:
https://www.unpac.me/results/ee0f0bd5-2c6c-4de6-8e3f-c1ade103d35a/
SH256 hash:
061894ced88db97141cdaf824d15380778c5866d6a444bd35f79628039760dbd
MD5 hash:
73e79a2afddc1a61421eec3da34a9f89
SHA1 hash:
0ddb7bb2210dfea8ea348fed733bdfeabd3d4aac
Link:
https://www.unpac.me/results/ee0f0bd5-2c6c-4de6-8e3f-c1ade103d35a/
SH256 hash:
ef35e9ee19b48afad15e3a49ba0df682604fe2412830b6f4ac06f2119d57b953
MD5 hash:
229ea14cb263a8de17a81aa6aecc8a39
SHA1 hash:
e4f0dc0ace301b49f3f4d7ca62b46e0a732cfe93
Link:
https://www.unpac.me/results/ee0f0bd5-2c6c-4de6-8e3f-c1ade103d35a/
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/ef35e9ee19b48afad15e3a49ba0df682604fe2412830b6f4ac06f2119d57b953

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/144582/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-27 13:00:05 UTC

============================================================
MBC behaviors list (github.com/accidentalrebel/mbcscan):
============================================================
0) [C0032.001] Data Micro-objective::CRC32::Checksum
1) [C0026.002] Data Micro-objective::XOR::Encode Data
4) [C0046] File System Micro-objective::Create Directory
5) [C0048] File System Micro-objective::Delete Directory
6) [C0047] File System Micro-objective::Delete File
7) [C0049] File System Micro-objective::Get File Attributes
8) [C0051] File System Micro-objective::Read File
9) [C0050] File System Micro-objective::Set File Attributes
10) [C0052] File System Micro-objective::Writes File
11) [E1510] Impact::Clipboard Modification
12) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
13) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
14) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
15) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
16) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
17) [C0017] Process Micro-objective::Create Process
18) [C0038] Process Micro-objective::Create Thread