MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b845e15f0e6b3a7649227cf5fd3d23faabfd7821ec1941808d9d182f53ca9940. 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 1 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b845e15f0e6b3a7649227cf5fd3d23faabfd7821ec1941808d9d182f53ca9940
SHA3-384 hash: b9d648a13860ca4b26a0e396b0f865509d80344d055381c9002d6d72599b65913044024ed1633873c9d77474395da517
SHA1 hash: 380a6758d347408b56d04b67fe75896b3eae35f4
MD5 hash: 5ad3e8c2811c34addec6ade19438db79
humanhash: jig-xray-eight-island
File name:signed copy.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:33'280 bytes
First seen:2022-03-17 17:55:47 UTC
Last seen:2022-03-18 15:31:35 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 384:tJwUb9xfCYFdpPnDHE3/Afi7B02PZpBvgOeHItoUtPx+0Kz:tJfbO4dpPDHEvAfS/PZp92fOp+1
Threatray 4'416 similar samples on MalwareBazaar
TLSH T1FDE23CC2F786C365ECEB163059379F000357FF267852662969C5BA0B3FB324198AB51B
File icon (PE):PE icon
dhash icon e0e4a3a6a4b8b8a8 (37 x Formbook, 9 x AZORult, 9 x Loki)
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
194.31.98.223:1187

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
194.31.98.223:1187 https://threatfox.abuse.ch/ioc/395225/

Intelligence

File Origin
# of uploads :
2
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/252053/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Launching a process
Sending a custom TCP request
DNS request
Creating a file
Creating a window
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
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed strictor
Link:
https://www.filescan.io/uploads/62337637b94fb38cb49adeb4/reports/5c45523f-246a-44aa-b3fe-19c9c61f36c7/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:
BluStealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/73be6353-f64c-4b5d-afe4-b395cacd5299
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/958999
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
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)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected MSILDownloaderGeneric
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 591480 Sample: signed copy.exe Startdate: 17/03/2022 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 14 other signatures 2->51 7 signed copy.exe 15 4 2->7         started        12 dhcpmon.exe 4 2->12         started        process3 dnsIp4 39 cdn.discordapp.com 162.159.134.233, 443, 49768 CLOUDFLARENETUS United States 7->39 33 C:\Users\user\AppData\...\signed copy.exe.log, ASCII 7->33 dropped 53 Writes to foreign memory regions 7->53 55 Allocates memory in foreign processes 7->55 57 Injects a PE file into a foreign processes 7->57 14 MSBuild.exe 1 11 7->14         started        19 cmd.exe 1 7->19         started        21 cmd.exe 1 7->21         started        23 conhost.exe 12->23         started        file5 signatures6 process7 dnsIp8 41 deranano1.ddns.net 194.31.98.223, 1187, 49776, 49783 BURSABILTR Netherlands 14->41 35 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 14->35 dropped 37 C:\Program Files (x86)\...\dhcpmon.exe, PE32 14->37 dropped 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->43 25 conhost.exe 19->25         started        27 timeout.exe 1 19->27         started        29 conhost.exe 21->29         started        31 timeout.exe 1 21->31         started        file9 signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b845e15f0e6b3a7649227cf5fd3d23faabfd7821ec1941808d9d182f53ca9940/
Threat name:
ByteCode-MSIL.Trojan.Strictor
Create hunting rule
Status:
Malicious
First seen:
2022-03-17 17:56:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
18
AV detection:
12 of 42 (28.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xbc6cxyonm5hmsjcpt272pjd7kv726bb5qmudaentumc6u6ktfaa._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
263565e9f77b5ee48474855d471315dd56d1bcabe4d037fb380d404b3afcd14e
NanoCore
4f7da7d6fb331a8098d4ce354690ffc64d8f0225307b406e722548109e669d4d
NanoCore
55aea4a4530e0aa4d13d4c68b9027e6a215bc4a4eaa87d2a8bfdc2c443dd3d7c
NanoCore
862965d573744607a29489905cfc8abdd8f187874d476ef4263eee7e5175630a
NanoCore
c59c8e3be7ec42553ff6af2588e3bcd0569e9467dbb9307218fb8724e02739f2
NanoCore
db7d1bc1cf6fb7fdbc3d0fc2c67c97ed89aa316d6bcb4c4e6ce942c9145612fc
NanoCore
+ 4'406 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence
Link:
https://tria.ge/reports/220317-wh1yvsdee8/
Behaviour
Delays execution with timeout.exe
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
Checks computer location settings
NanoCore
Malware Config
C2 Extraction:
deranano1.ddns.net:1187
194.31.98.223:1187
Unpacked files
SH256 hash:
b845e15f0e6b3a7649227cf5fd3d23faabfd7821ec1941808d9d182f53ca9940
MD5 hash:
5ad3e8c2811c34addec6ade19438db79
SHA1 hash:
380a6758d347408b56d04b67fe75896b3eae35f4
Link:
https://www.unpac.me/results/22761fbb-dc02-4209-8677-a93afb03f8d0/
Malware family:
NanoCore
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b845e15f0e6b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/b845e15f0e6b3a7649227cf5fd3d23faabfd7821ec1941808d9d182f53ca9940

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

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/252053/

Comments