MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
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SHA256 hash: 90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11
SHA3-384 hash: 28de2340cf68a3aa71114257d68107148fd8dd44c8bf5ef9e6fe991483ac48a0441c0f91af056f3692bc0109f65261b1
SHA1 hash: e99d9fbb721910b635a1da888e1318d9cf40f8a9
MD5 hash: 1dba8bb3df05de97f8c0766e83f8c5dd
humanhash: grey-william-mobile-maryland
File name:PO#903_2224_NGUYEN_LINH_SERVICE_AND_TRADINGS_COx.exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:846'848 bytes
First seen:2021-05-26 07:28:39 UTC
Last seen:2021-05-26 09:19:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'749 x AgentTesla, 19'653 x Formbook, 12'246 x SnakeKeylogger)
ssdeep 12288:b7pwQ84jRMot3qE9+/o385ghCWIxJyF2pCxZCyzyZDaTJrsFuJicxqdlky:/PRVQ4oghUWoOYKqDaTpJFgl3
Threatray 7'313 similar samples on MalwareBazaar
TLSH 49059C2B731C6BAED11E4B76A837136883E49F0327B2FAAB79C59DDD052164C461F1C2
Reporter abuse_ch
Tags:exe NanoCore

Intelligence

File Origin
# of uploads :
2
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/162245/
Detection(s):
SecuriteInfo.com.Artemis1DBA8BB3DF05.31789.32278.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Sending a custom TCP request
Sending a UDP request
Creating a window
Enabling autorun by creating a 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 AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792297
Signature
.NET source code contains very large array initializations
Antivirus detection for dropped file
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)
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: NanoCore
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Nanocore RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 424695 Sample: PO#903_2224_NGUYEN_LINH_SER... Startdate: 26/05/2021 Architecture: WINDOWS Score: 100 66 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->66 68 Found malware configuration 2->68 70 Malicious sample detected (through community Yara rule) 2->70 72 10 other signatures 2->72 10 PO#903_2224_NGUYEN_LINH_SERVICE_AND_TRADINGS_COx.exe 15 8 2->10         started        15 InstallUtil.exe 2->15         started        17 dhcpmon.exe 2->17         started        19 dhcpmon.exe 2->19         started        process3 dnsIp4 64 192.168.2.1 unknown unknown 10->64 54 C:\Users\user\AppData\Roaming\exploerss.exe, PE32 10->54 dropped 56 C:\Users\user\AppData\...\InstallUtil.exe, PE32 10->56 dropped 58 C:\Users\...\exploerss.exe:Zone.Identifier, ASCII 10->58 dropped 60 PO#903_2224_NGUYEN...RADINGS_COx.exe.log, ASCII 10->60 dropped 82 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->82 21 exploerss.exe 14 4 10->21         started        25 conhost.exe 15->25         started        27 conhost.exe 17->27         started        file5 signatures6 process7 file8 52 C:\Users\user\AppData\Roaming\ammero.exe, PE32 21->52 dropped 74 Multi AV Scanner detection for dropped file 21->74 76 Machine Learning detection for dropped file 21->76 78 Writes to foreign memory regions 21->78 80 2 other signatures 21->80 29 ammero.exe 2 21->29         started        32 InstallUtil.exe 1 12 21->32         started        signatures9 process10 dnsIp11 84 Antivirus detection for dropped file 29->84 86 Multi AV Scanner detection for dropped file 29->86 88 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 29->88 94 2 other signatures 29->94 62 79.134.225.91, 4488, 49722, 49725 FINK-TELECOM-SERVICESCH Switzerland 32->62 46 C:\Users\user\AppData\Roaming\...\run.dat, ISO-8859 32->46 dropped 48 C:\Users\user\AppData\Local\...\tmp501C.tmp, XML 32->48 dropped 50 C:\Program Files (x86)\...\dhcpmon.exe, PE32 32->50 dropped 90 Uses schtasks.exe or at.exe to add and modify task schedules 32->90 92 Hides that the sample has been downloaded from the Internet (zone.identifier) 32->92 36 schtasks.exe 32->36         started        38 schtasks.exe 32->38         started        file12 signatures13 process14 process15 40 conhost.exe 36->40         started        42 conhost.exe 38->42         started        process16 44 conhost.exe 40->44         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11/
Threat name:
Win32.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-05-26 01:20:58 UTC
AV detection:
10 of 47 (21.28%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=sdaw3ogga74ouhio3boaaozqneqsqmt3iwj6f62fcinfmt5mnqiq._file
Verdict:
malicious
Label(s):
nanocorerat
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
0cbbdd2c9615f4d2de4e0232ace6b69889a54538444838ac6616a5aa39109c98
NanoCore
0e360afe7e5de25783afb92588b7c54eee9413d21727c9379f813db1501c8ce3
NanoCore
3097b8c703159cf613aba9c2f42b090a391c060402af0c322b29f26e4bf4c22e
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5ff8126fb4025c8587191a776a7d505f1bcc825f87a8e21266f55d5ff3f2cccb
NanoCore
7a388ead62a8f818b36c9c9a1938c2172c4fa05edfc71307980131c53c69d054
NanoCore
8b48cf42d80759394799141684dc71d694e24344ade85837ba018c93df81494d
NanoCore
8e8b3b7c12c9e7113b882eb559fe9fd5cac868f8e3238942bcc9fa893521c5a4
NanoCore
af48d211d5bd97dbf5142304c87250f50244cc4b6649af0cd5e7fcc2193d03ed
NanoCore
c95438b7107da932d24c8a04dcf5ab9adccad56086566765c2f7c96cc08ec8d0
NanoCore
cac57f9210fa4d8fb970249750db6886d99f31e503cdeb6e4641bf1c0055afe7
NanoCore
+ 7'303 additional samples on MalwareBazaar
Result
Malware family:
nanocore
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:nanocore agilenet evasion keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210526-5vc6tdq6ge/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Drops startup file
Obfuscated with Agile.Net obfuscator
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Executes dropped EXE
AgentTesla Payload
AgentTesla
NanoCore
Malware Config
C2 Extraction:
79.134.225.91:4488
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/90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11

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.

Malspam

NanoCore

Executable exe 90c16db8c607f8ea1d0ed85c003b30692128327b4593e2fb45121a564fac6c11

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/162245/

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