MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 e1b2ca52707d724682e2c2618eb33899b019e8650e325e800e43e2042231f55d. 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 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: e1b2ca52707d724682e2c2618eb33899b019e8650e325e800e43e2042231f55d
SHA3-384 hash: 3d33a5bc2d17c1836e9af54bd79a9153f6eb00ab839f140e073d5b31355cd56d578385bcd8091cc3cd3241e90a1c447e
SHA1 hash: 1db05b7beda1a9e4fb0c4cd8e04c512c98efdf3c
MD5 hash: 416ccd703aff8844f0454e112f663c06
humanhash: west-hotel-single-bacon
File name:OUTSTANDING INVOICE.pdf.scr
Download: download sample
Signature NanoCore
Create hunting rule
File size:759'808 bytes
First seen:2021-06-11 14:08:37 UTC
Last seen:2021-06-11 14:38:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:RjMA4cScHfc4eucIV7B+Aci98+WrWwYPF+h3HjsrGAUyE:RjEkfDxcc7Bud6fPFUz4GlB
Threatray 2'299 similar samples on MalwareBazaar
TLSH 69F4DF3E7358BFA9C05F09768827884C53E39D236D31F3DE68E42EE47921A164A1F54B
Reporter Anonymous
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
125
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
OUTSTANDING INVOICE.pdf.scr
Verdict:
Malicious activity
Analysis date:
2021-06-11 14:09:59 UTC
Tags:
rat nanocore
Link:
https://app.any.run/tasks/62e57c00-d869-4a44-be30-ef58f37a2806

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/166133/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.43183.25644.5887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Connection attempt 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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/997d6378-0607-48b1-a3bc-2393e747ec0e
Result
Threat name:
Nanocore
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/800916
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Detected Nanocore Rat
Drops PE files to the document folder of the user
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
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: NanoCore
Uses an obfuscated file name to hide its real file extension (double extension)
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 433312 Sample: OUTSTANDING INVOICE.pdf.scr Startdate: 11/06/2021 Architecture: WINDOWS Score: 100 52 brownhost22.ddns.net 2->52 60 Found malware configuration 2->60 62 Malicious sample detected (through community Yara rule) 2->62 64 Multi AV Scanner detection for dropped file 2->64 66 12 other signatures 2->66 8 windows update.exe 5 2->8         started        12 OUTSTANDING INVOICE.pdf.exe 15 8 2->12         started        signatures3 process4 dnsIp5 42 C:\Users\user\AppData\...\windows update.exe, PE32 8->42 dropped 68 Writes to foreign memory regions 8->68 70 Allocates memory in foreign processes 8->70 72 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->72 74 Injects a PE file into a foreign processes 8->74 15 InstallUtil.exe 6 8->15         started        20 windows update.exe 8->20         started        22 windows update.exe 8->22         started        26 10 other processes 8->26 54 192.168.2.1 unknown unknown 12->54 44 C:\Users\user\Documents\windows update.exe, PE32 12->44 dropped 46 C:\Users\user\AppData\...\InstallUtil.exe, PE32 12->46 dropped 48 C:\...\windows update.exe:Zone.Identifier, ASCII 12->48 dropped 50 C:\Users\...\OUTSTANDING INVOICE.pdf.exe.log, ASCII 12->50 dropped 24 windows update.exe 14 3 12->24         started        file6 signatures7 process8 dnsIp9 56 brownhost22.ddns.net 194.5.98.28, 2021, 49765, 49766 DANILENKODE Netherlands 15->56 40 C:\Users\user\AppData\Roaming\...\run.dat, Non-ISO 15->40 dropped 58 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->58 28 windows update.exe 20->28         started        30 windows update.exe 22->30         started        32 windows update.exe 26->32         started        34 windows update.exe 26->34         started        36 windows update.exe 26->36         started        38 6 other processes 26->38 file10 signatures11 process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/e1b2ca52707d724682e2c2618eb33899b019e8650e325e800e43e2042231f55d/
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Create hunting rule
Status:
Malicious
First seen:
2021-06-10 01:19:01 UTC
AV detection:
15 of 29 (51.72%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
Similar samples:
0a3a85fd6964b0cf1b61e41cc7c117ada4c8607a0107ad4921dafa69933ef0ac
NanoCore
0cbbdd2c9615f4d2de4e0232ace6b69889a54538444838ac6616a5aa39109c98
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4471de15ce9e9b3bee5bc77b26e67fe91b6be5e51d7ef8e174b30a6c3e32e43a
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7a388ead62a8f818b36c9c9a1938c2172c4fa05edfc71307980131c53c69d054
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90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11
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b7ef9f5137720932895dbc0e1231e71451eace1e82f2baac3e208c969ec1e966
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cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7
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d6a8535e674dda41d9b294844be9c27b8af80831044d61354f77b50497b28fde
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dc1f93435a858fed72eee637cb23ad024ba309ec030dfa53f2495cb16776ccfd
NanoCore
fcd1f447849497f6ee7e0d08f59f8220b457b6e9a0d02c227348ac313ba3196b
NanoCore
+ 2'289 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:nanocore agilenet evasion keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210611-tx9q7bjbbj/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Drops startup file
Loads dropped DLL
Obfuscated with Agile.Net obfuscator
Executes dropped EXE
NanoCore
Malware Config
C2 Extraction:
194.5.98.28:2021
brownhost22.ddns.net:2021
Unpacked files
SH256 hash:
e1b2ca52707d724682e2c2618eb33899b019e8650e325e800e43e2042231f55d
MD5 hash:
416ccd703aff8844f0454e112f663c06
SHA1 hash:
1db05b7beda1a9e4fb0c4cd8e04c512c98efdf3c
Link:
https://www.unpac.me/results/ca5c4758-9f49-4e7c-a23f-453eff3bd9e1/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/e1b2ca52707d724682e2c2618eb33899b019e8650e325e800e43e2042231f55d

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.

  
Delivery method
Distributed via e-mail link
Cape
Cape
https://www.capesandbox.com/analysis/166133/

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