MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0f4b7751e9f37362fa93b362e43c08631b11ddab97f83b9fa2e393b3429f43f7. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0f4b7751e9f37362fa93b362e43c08631b11ddab97f83b9fa2e393b3429f43f7
SHA3-384 hash: 51d1c22c609c18ec6012a43a2417a8cb68276a1a25bdaedef3403eda1b938cf77336acdae2170550ec74e836e890f653
SHA1 hash: 3d914fd9062f5c0655cadc626f540189ac6e6d8d
MD5 hash: c379f390450ca7aafd795b6492b82433
humanhash: jersey-asparagus-quiet-arizona
File name:cotización.PDF.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:754'176 bytes
First seen:2021-05-10 17:35:51 UTC
Last seen:2021-05-10 19:07:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'652 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 12288:rgUqRs7lBWWflHuOFjEDrUdqR7n3bHjAxoK+VKgbP1cF:/tNWDrUdGLHjACdKgbP1c
Threatray 1'879 similar samples on MalwareBazaar
TLSH F1F4AD23325C576DE27E57B9B034023053F5AF2B9361CA8CBDC9FCAE1836A4D46616D2
Reporter abuse_ch
Tags:exe NanoCore RAT


Avatar
abuse_ch
NanoCore C2:
185.140.53.137:7171

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
185.140.53.137:7171 https://threatfox.abuse.ch/ioc/34723/

Intelligence

File Origin
# of uploads :
2
# of downloads :
131
Origin country :
n/a
Vendor Threat Intelligence
Detection:
NanoCore
Create hunting rule
Link:
https://www.capesandbox.com/analysis/154272/
Detection(s):
SecuriteInfo.com.Scr.Malcodegdn30.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a process from a recently created file
Result
Verdict:
UNKNOWN
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/777644
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
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
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Sigma detected: NanoCore
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 410036 Sample: cotizaci#U00f3n.PDF.exe Startdate: 10/05/2021 Architecture: WINDOWS Score: 100 47 teames.hopto.org 2->47 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->57 59 10 other signatures 2->59 10 cotizaci#U00f3n.PDF.exe 3 2->10         started        14 dhcpmon.exe 5 2->14         started        16 MSBuild.exe 4 2->16         started        18 dhcpmon.exe 6 2->18         started        signatures3 process4 file5 45 C:\Users\user\...\cotizaci#U00f3n.PDF.exe.log, ASCII 10->45 dropped 65 Writes to foreign memory regions 10->65 67 Allocates memory in foreign processes 10->67 69 Injects a PE file into a foreign processes 10->69 20 MSBuild.exe 1 14 10->20         started        25 conhost.exe 14->25         started        27 conhost.exe 16->27         started        signatures6 process7 dnsIp8 49 teames.hopto.org 185.140.53.137, 49707, 49714, 49720 DAVID_CRAIGGG Sweden 20->49 51 192.168.2.1 unknown unknown 20->51 39 C:\Users\user\AppData\Roaming\...\run.dat, data 20->39 dropped 41 C:\Users\user\AppData\Local\...\tmp9B04.tmp, XML 20->41 dropped 43 C:\Program Files (x86)\...\dhcpmon.exe, PE32 20->43 dropped 61 Uses schtasks.exe or at.exe to add and modify task schedules 20->61 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 20->63 29 schtasks.exe 1 20->29         started        31 schtasks.exe 1 20->31         started        file9 signatures10 process11 process12 33 conhost.exe 29->33         started        35 conhost.exe 31->35         started        process13 37 conhost.exe 33->37         started       
Detection:
nanocore
Create hunting rule
Link:
https://mwdb.cert.pl/sample/0f4b7751e9f37362fa93b362e43c08631b11ddab97f83b9fa2e393b3429f43f7/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-05-10 17:36:16 UTC
AV detection:
10 of 28 (35.71%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=b5fxoupj6nzwf6utwnroipaimmnrdxnls74dxh5c4oj3gqu7ip3q._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
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f29b0b35d584de9410f3ffe75e8e4dbc6d90ecbc6f2c4d9382d8faf33e88d80b
NanoCore
+ 1'869 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210510-a51f4qazc6/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
NanoCore
Malware Config
C2 Extraction:
teames.hopto.org:7171
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/0f4b7751e9f37362fa93b362e43c08631b11ddab97f83b9fa2e393b3429f43f7

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:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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/154272/

Comments