MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 20ec4be6026cf8acc9166f537ecb3898d0fe4978d4e77dfa135250458b454fdf. 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 YARA 3 File information Comments
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SHA256 hash: 20ec4be6026cf8acc9166f537ecb3898d0fe4978d4e77dfa135250458b454fdf
SHA3-384 hash: 2ad63fa22be1a0d61fe20e31a3b90496af0a7c22bc37ab1e26d03282dcbd8f330a4431abbb6dc38698835c3dd59093dd
SHA1 hash: a9cf71046cdedfc59f155278b0e0308cf56aa9b7
MD5 hash: eba40131697ac2935ef93899c42abfcc
humanhash: hawaii-winner-papa-artist
File name:URGENT QUOTATION (2).exe
Download: download sample
Signature NanoCore
Create hunting rule
File size:350'720 bytes
First seen:2020-07-30 08:12:40 UTC
Last seen:2020-07-30 13:34:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:SkayJR2NdkmFlekJ5SXq2cZxqzNu6jimb0dhFqoYUhAyk3wz345:Sk24weASXq2cPVq+FSUhAy7c
Threatray 10'771 similar samples on MalwareBazaar
TLSH 9E74124CF329B256CC6E43B896D7D1C007B099937A16D71E69C8AAEE46433C418C6BDF
Reporter jarumlus
Tags:NanoCore

Intelligence

File Origin
# of uploads :
4
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/35411/
Detection(s):
Sanesecurity.Rogue.0hr.20200730-0903.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Enabling autorun
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/403375
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Found malware configuration
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
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 253923 Sample: URGENT QUOTATION (2).exe Startdate: 30/07/2020 Architecture: WINDOWS Score: 100 42 g.msn.com 2->42 44 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->44 48 Found malware configuration 2->48 50 Yara detected AgentTesla 2->50 52 .NET source code contains potential unpacker 2->52 54 5 other signatures 2->54 8 URGENT QUOTATION (2).exe 7 2->8         started        signatures3 process4 file5 36 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 8->36 dropped 38 C:\Users\...\URGENT QUOTATION (2).exe.log, ASCII 8->38 dropped 40 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 8->40 dropped 58 Injects a PE file into a foreign processes 8->58 12 URGENT QUOTATION (2).exe 2 8->12         started        16 cmd.exe 1 8->16         started        18 cmd.exe 3 8->18         started        21 cmd.exe 1 8->21         started        signatures6 process7 dnsIp8 46 mail.travelsapphire.com 198.38.82.38, 49731, 587 SERVERCENTRALUS United States 12->46 60 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->60 62 Tries to steal Mail credentials (via file access) 12->62 64 Tries to harvest and steal ftp login credentials 12->64 66 Tries to harvest and steal browser information (history, passwords, etc) 12->66 23 reg.exe 1 1 16->23         started        26 conhost.exe 16->26         started        32 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 18->32 dropped 28 conhost.exe 18->28         started        34 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 21->34 dropped 30 conhost.exe 21->30         started        file9 signatures10 process11 signatures12 56 Creates an undocumented autostart registry key 23->56
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/20ec4be6026cf8acc9166f537ecb3898d0fe4978d4e77dfa135250458b454fdf/
Threat name:
ByteCode-MSIL.Trojan.SmartAssembly
Create hunting rule
Status:
Malicious
First seen:
2020-07-30 08:14:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
32 of 48 (66.67%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=edwexzqcnt4kzsiwn5jx5szytdip4sly2ttx36qtkjielc2fj7pq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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NanoCore
+ 10'761 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200730-9j2w3cffda/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
NTFS ADS
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
Loads dropped DLL
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/20ec4be6026cf8acc9166f537ecb3898d0fe4978d4e77dfa135250458b454fdf

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

NanoCore

rar 05b1bc8782aaf9316ad9dad25a0f322e4f6a1d6187decb4a0f762c3c1db9aaca

NanoCore

Executable exe 20ec4be6026cf8acc9166f537ecb3898d0fe4978d4e77dfa135250458b454fdf

(this sample)

  
Dropped by
MD5 187da856f53dfb24f231cd3187eec06b
  
Dropped by
SHA256 05b1bc8782aaf9316ad9dad25a0f322e4f6a1d6187decb4a0f762c3c1db9aaca
  
Dropped by
NanoCore
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/35411/

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