MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7ea977d9f961ac08042e890508150c65655800e27be730debca6a5f30ee357f6. 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 1 YARA 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7ea977d9f961ac08042e890508150c65655800e27be730debca6a5f30ee357f6
SHA3-384 hash: 4b14029f8aa8355372a305e3ba659bfda7e6bfbb24c0f26864ca8805f98763d04f0024035e1f541c0509b09759481872
SHA1 hash: 13abf14f51a146390967b64db02ac569fe818d23
MD5 hash: 81b2ffaa2138b73f40db5f9b7b73cb3b
humanhash: finch-spring-pasta-ack
File name:DOC090321-0903201154919,pdf.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:472'503 bytes
First seen:2021-04-21 09:27:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash ea4e67a31ace1a72683a99b80cf37830 (70 x Formbook, 64 x GuLoader, 54 x Loki)
ssdeep 12288:RejsXKSq6UtuaranSvglcPf/v5nDu2gEU:Resq/9nPf9DKT
Threatray 371 similar samples on MalwareBazaar
TLSH FEA4ADA1E5D268D2C90E53B58F73BB21419BBCBC88F45E5E7E9E322057331A2613650F
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
79.134.225.7:9634

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
79.134.225.7:9634 https://threatfox.abuse.ch/ioc/9374/

Intelligence

File Origin
# of uploads :
1
# of downloads :
117
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
DOC090321-0903201154919,pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-04-21 09:35:20 UTC
Tags:
rat nanocore trojan stealer
Link:
https://app.any.run/tasks/fe188570-da78-426b-93c2-ebe6c5927dbf

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/141972/
Detection(s):
SecuriteInfo.com.Troj.Kryptik-VJ-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:
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/690644
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Contains functionality to prevent local Windows debugging
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)
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses dynamic DNS services
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 394265 Sample: DOC090321-0903201154919,pdf.exe Startdate: 21/04/2021 Architecture: WINDOWS Score: 100 34 marstonstyl247.ddns.net 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Found malware configuration 2->40 42 Malicious sample detected (through community Yara rule) 2->42 44 14 other signatures 2->44 7 DOC090321-0903201154919,pdf.exe 1 21 2->7         started        11 dhcpmon.exe 18 2->11         started        signatures3 process4 file5 20 abcdefghijklmnopqr...lmnopqrstuvwxyz.exe, PE32 7->20 dropped 22 C:\Users\user\AppData\...\5asyop15gvitdes.dll, PE32 7->22 dropped 46 Maps a DLL or memory area into another process 7->46 48 Contains functionality to prevent local Windows debugging 7->48 13 DOC090321-0903201154919,pdf.exe 1 12 7->13         started        24 C:\Users\user\AppData\...\5asyop15gvitdes.dll, PE32 11->24 dropped 18 dhcpmon.exe 3 11->18         started        signatures6 process7 dnsIp8 36 marstonstyl247.ddns.net 79.134.225.7, 49735, 49736, 49740 FINK-TELECOM-SERVICESCH Switzerland 13->36 26 C:\Program Files (x86)\...\dhcpmon.exe, PE32 13->26 dropped 28 C:\Users\user\AppData\Roaming\...\run.dat, data 13->28 dropped 30 C:\...\dhcpmon.exe:Zone.Identifier, ASCII 13->30 dropped 50 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->50 32 C:\Users\user\AppData\...\dhcpmon.exe.log, ASCII 18->32 dropped file9 signatures10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7ea977d9f961ac08042e890508150c65655800e27be730debca6a5f30ee357f6/
Threat name:
Win32.Backdoor.NanoCore
Create hunting rule
Status:
Malicious
First seen:
2021-04-21 09:33:01 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=p2uxpwpzmgwaqbborecqqfimmvsvqahcppttbxv4u2s7gdxdk73a._file
Verdict:
malicious
Similar samples:
60b6d55beee9f47ef1e04a854c5e985ad5475b84a92e048432ceae4650a9e3e1
NanoCore
6f4fbab85c58d588450bc856ceff3894645e0033b4c4d2684184a8430c01daa4
NanoCore
7d235a36d469dc104409fa44edb77a3d5a3d7217580f3350a10fb226d9f9ba3b
NanoCore
89a173beec574576632b98017aee8549e88ec2673fd5c3028a74f5ba2d9613b0
NanoCore
8bcad4190aba21baa205b47acb1c22c1d473605036b5e32156dccc5d4ae52bc5
NanoCore
b03f6bc5eec0f24076b3ef2c761b21d75c489ad34c5f94dcffab6d2b4d65263f
NanoCore
b8db7c77bddbcd34653bfcb9f74eaef50a4557e2bde18214798a5c2baadedc51
NanoCore
d273cc0da43feffe12b225bd5a7e5942d376296f74cae9fb942240a035e06c6a
NanoCore
dd44eb26a328f1e86823339666e1b1237ad7b1d880694c1b8fb8164b931aa512
NanoCore
e100812a13dcc0b92ee42371dd7b03f674581c41dc3a2c70109acff79333cf30
NanoCore
+ 361 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/210421-m5zf1gefxx/
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
Checks whether UAC is enabled
Loads dropped DLL
NanoCore
Malware Config
C2 Extraction:
marstonstyl247.ddns.net:9634
79.134.225.7:9634
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Nanocore
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/7ea977d9f961ac08042e890508150c65655800e27be730debca6a5f30ee357f6

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.

Cape
Cape
https://www.capesandbox.com/analysis/141972/

Comments


Avatar
a̵c̵c̸i̵d̷e̵n̷t̴a̷l̴r̵e̷b̸e̴l̸ commented on 2021-04-21 10:19:36 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) [C0045] File System Micro-objective::Copy File
5) [C0046] File System Micro-objective::Create Directory
6) [C0048] File System Micro-objective::Delete Directory
7) [C0047] File System Micro-objective::Delete File
8) [C0049] File System Micro-objective::Get File Attributes
9) [C0051] File System Micro-objective::Read File
10) [C0050] File System Micro-objective::Set File Attributes
11) [C0052] File System Micro-objective::Writes File
12) [E1510] Impact::Clipboard Modification
13) [C0034.001] Operating System Micro-objective::Set Variable::Environment Variable
14) [C0036.004] Operating System Micro-objective::Create Registry Key::Registry
15) [C0036.002] Operating System Micro-objective::Delete Registry Key::Registry
16) [C0036.007] Operating System Micro-objective::Delete Registry Value::Registry
17) [C0036.003] Operating System Micro-objective::Open Registry Key::Registry
18) [C0036.005] Operating System Micro-objective::Query Registry Key::Registry
19) [C0036.006] Operating System Micro-objective::Query Registry Value::Registry
20) [C0036.001] Operating System Micro-objective::Set Registry Key::Registry
21) [C0017] Process Micro-objective::Create Process
22) [C0038] Process Micro-objective::Create Thread
23) [C0018] Process Micro-objective::Terminate Process