MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8. 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 YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8
SHA3-384 hash: 60a9463efd6fd264f542bc2e87ff0570ef74785e0b5d115752d69cced8b9eb01b6125ba9297cb8827c144dc45e5ae8fe
SHA1 hash: e1d3a437893304ca0dac6ba29441d502b1c7124c
MD5 hash: 5a0d7e684d78475d0c5388e4102dbce7
humanhash: north-sweet-uniform-connecticut
File name:4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8
Download: download sample
Signature NanoCore
Create hunting rule
File size:760'832 bytes
First seen:2021-02-28 07:21:35 UTC
Last seen:2021-02-28 09:00:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:5BUUlcpfM9iEV8ErwsS6Y9baIfjfj/eeml4Blpw2U/6s8U0iDUrse:7NS6wuIffmeml4BlGNxH5e
Threatray 1'615 similar samples on MalwareBazaar
TLSH 33F4E02030B95B21D9BC87F80496624413F6712E755EFB2D0DD672EF2A72B824B52F27
Reporter JAMESWT_WT
Tags:NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
383
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8
Verdict:
Malicious activity
Analysis date:
2021-02-28 08:32:55 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/b4901a86-bd0e-4da6-b064-3357b8bcd01b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/119917/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.45793220.23815.11396.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Using the Windows Management Instrumentation requests
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/620916
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Binary contains a suspicious time stamp
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
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
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
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 359451 Sample: rb86llCYzA Startdate: 28/02/2021 Architecture: WINDOWS Score: 100 53 strongodss.ddns.net 2->53 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for dropped file 2->63 65 13 other signatures 2->65 10 rb86llCYzA.exe 6 2->10         started        14 RegSvcs.exe 4 2->14         started        16 dhcpmon.exe 3 2->16         started        18 dhcpmon.exe 4 2->18         started        signatures3 process4 file5 47 C:\Users\user\AppData\...\SOcoFBoTWwiTkn.exe, PE32 10->47 dropped 49 C:\Users\user\AppData\Local\...\tmpE63F.tmp, XML 10->49 dropped 51 C:\Users\user\AppData\...\rb86llCYzA.exe.log, ASCII 10->51 dropped 71 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 10->71 73 Writes to foreign memory regions 10->73 75 Allocates memory in foreign processes 10->75 77 Injects a PE file into a foreign processes 10->77 20 RegSvcs.exe 1 13 10->20         started        25 schtasks.exe 1 10->25         started        27 conhost.exe 14->27         started        29 conhost.exe 16->29         started        signatures6 process7 dnsIp8 55 strongodss.ddns.net 87.237.165.78, 49720, 49721, 49724 MTVHGB Russian Federation 20->55 57 79.134.225.43, 49725, 49729, 49730 FINK-TELECOM-SERVICESCH Switzerland 20->57 43 C:\Users\user\AppData\Roaming\...\run.dat, data 20->43 dropped 45 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->45 dropped 67 Protects its processes via BreakOnTermination flag 20->67 69 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->69 31 schtasks.exe 1 20->31         started        33 schtasks.exe 1 20->33         started        35 conhost.exe 25->35         started        file9 signatures10 process11 process12 37 conhost.exe 31->37         started        39 conhost.exe 33->39         started        process13 41 conhost.exe 37->41         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-26 13:16:39 UTC
AV detection:
21 of 28 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkyfqp75khxubr2tdkj7ffgbnx547kq5v4jygw4l2iy4e2nhqdea._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
258856f05819789b47e0bed58b1df479976a355cd30b953b23f9e2f5d286578a
NanoCore
2acf6c2398a12dc97ff2ceec4f348ed6338c4aafb2dcfeb24856cf8526d12a9d
NanoCore
4f0035201ba7a3a536727862b8ac8dbf389038c5af1674ff7a982190fed1e30b
NanoCore
644a0403a3c8254a3846b8c07aa7fdeb2cfe21aa5630ca3100949869f60ae407
NanoCore
88ff1e98dcbd97e019e62abc039b84689c902b602f6b2f6ca2b1094b2643280d
NanoCore
db591a08743176655e567ddffcbbd79b9e2e31feadc1feb54a0200296a93d53d
NanoCore
de8da0607d432138fac74f2a90369cb59bbac0116358c3d95046fe21172a717a
NanoCore
e26e07749118e8284c28e50553c62bdbe327234b801ffdf2eedb8663444aa459
NanoCore
f3ac633354efc183e1705dd9e042d39b62208735f6f9e83534fb21c9f32b5d70
NanoCore
f4bf592fde78af7ed0b06166ac8265d7b65a2457b9a61f12c2e3a4fad641ac19
NanoCore
+ 1'605 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/210228-eallgzsnh2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
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
Maps connected drives based on registry
Checks BIOS information in registry
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
NanoCore
Malware Config
C2 Extraction:
strongodss.ddns.net:58103
79.134.225.43:58103
Unpacked files
SH256 hash:
7ca9eba1bacb0dcfea51c59b2333703ef5deda7be4bc6e6cc0c078910cf9ad1a
MD5 hash:
399fadb18d16988da1a128fdc5b933a4
SHA1 hash:
58ec9164a716e107c88e74bb8c6e62e4179af4b4
Detections:
win_nanocore_w0
Create hunting rule
Link:
https://www.unpac.me/results/d70b8d97-091d-4101-81f1-3b6fa1366c70/
Parent samples :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 hash:
f0a09c48af16c079c37ad0914f18897976357981fe5ee6f556ab9f9f70b9a671
MD5 hash:
f984a71581f6da5732110be2a569a392
SHA1 hash:
10de05b6b35fc5dbc00c42d59a4b850bcaae01e6
Link:
https://www.unpac.me/results/d70b8d97-091d-4101-81f1-3b6fa1366c70/
SH256 hash:
965f2a4429ccfe6b25ceb799686ab02327f91c8bb3506bd81696a0e3b0549e73
MD5 hash:
ca7d8fa2ea0e88ffc69218d638d5698f
SHA1 hash:
070a303a7b95b9bfb3c5c21e01fd9c7d2c4acc17
Link:
https://www.unpac.me/results/d70b8d97-091d-4101-81f1-3b6fa1366c70/
SH256 hash:
4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8
MD5 hash:
5a0d7e684d78475d0c5388e4102dbce7
SHA1 hash:
e1d3a437893304ca0dac6ba29441d502b1c7124c
Link:
https://www.unpac.me/results/d70b8d97-091d-4101-81f1-3b6fa1366c70/
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/4ab0583ffd51ef40c7531a93f294c16dfbcfaa1daf13835b8bd231c269a780c8

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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/119917/

Comments