MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b023a34548a0f58904fab9d0c977edd8eef12a8185661dcb51b9937df768aed1. 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


AgentTesla


Vendor detections: 10


Intelligence 10 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b023a34548a0f58904fab9d0c977edd8eef12a8185661dcb51b9937df768aed1
SHA3-384 hash: 683e844d172b9a12a66bda874af068bcc73055de5d269733dfce1504af265c0d7bafe10f8eda8d728d5d0ff4acd1f25a
SHA1 hash: 026e56f2e40838c8ba811c6a094931481c7078ef
MD5 hash: 23d8e7a04ccabc933a83ac0b26f4e88c
humanhash: triple-burger-maine-undress
File name:SecuriteInfo.com.CAP_HookExKeylogger.20427.22599
Download: download sample
Signature AgentTesla
Create hunting rule
File size:886'272 bytes
First seen:2020-08-26 20:55:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:2KFy+w1Qw2tCoFeQ+xvTQaLdYLMLOLwGHMFkKDwEYXfM5DkCPHiV6uI4g+IfJw:2KfCACoT+xvT3hUNKEfM5DV4g+Ui
Threatray 10'230 similar samples on MalwareBazaar
TLSH 701508363AC6A425DA3E0771C4A45AC2B331A54B7B42CB2F79DB879C9E0328F335516D
Reporter SecuriteInfoCom
Tags:AgentTesla

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/51465/
Detection(s):
SecuriteInfo.com.CAP_HookExKeylogger.20427.22599.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Running batch commands
Launching a process
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/452075
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Creates an autostart registry key pointing to binary in C:\Windows
Creates multiple autostart registry keys
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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: Add file from suspicious location to autostart registry
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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)
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 278437 Sample: SecuriteInfo.com.CAP_HookEx... Startdate: 27/08/2020 Architecture: WINDOWS Score: 100 44 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->44 46 Found malware configuration 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 3 other signatures 2->50 7 SecuriteInfo.com.CAP_HookExKeylogger.20427.exe 7 2->7         started        10 pcalua.exe 1 2->10         started        12 pcalua.exe 1 1 2->12         started        process3 file4 32 C:\Users\user\AppData\Roaming\sgyh.exe, PE32 7->32 dropped 34 C:\Users\user\AppData\...\InstallUtil.exe, PE32 7->34 dropped 36 C:\Users\user\...\sgyh.exe:Zone.Identifier, ASCII 7->36 dropped 38 SecuriteInfo.com.C...ogger.20427.exe.log, ASCII 7->38 dropped 14 sgyh.exe 2 7->14         started        17 cmd.exe 1 7->17         started        19 sgyh.exe 3 10->19         started        process5 signatures6 64 Writes to foreign memory regions 14->64 66 Allocates memory in foreign processes 14->66 68 Injects a PE file into a foreign processes 14->68 21 InstallUtil.exe 2 4 14->21         started        26 reg.exe 1 1 17->26         started        28 conhost.exe 17->28         started        70 Multi AV Scanner detection for dropped file 19->70 process7 dnsIp8 40 mail.b.hostedemail.com 64.98.36.128, 49761, 587 TUCOWS-3CA Canada 21->40 42 192.168.2.1 unknown unknown 21->42 30 C:\Users\user\AppData\Roaming\...\57QwA12.exe, PE32 21->30 dropped 52 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 21->52 54 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 21->54 56 Tries to steal Mail credentials (via file access) 21->56 62 4 other signatures 21->62 58 Creates multiple autostart registry keys 26->58 60 Creates an autostart registry key pointing to binary in C:\Windows 26->60 file9 signatures10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b023a34548a0f58904fab9d0c977edd8eef12a8185661dcb51b9937df768aed1/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-26 18:45:32 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=war2grkiud2ysbh2xhims57n3dxpckubqvtb3s2rxgjx353iv3iq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'220 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200826-jxd9vvexh2/
Behaviour
AgentTesla Payload
Agenttesla family
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b023a34548a0f58904fab9d0c977edd8eef12a8185661dcb51b9937df768aed1

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.

Web download

AgentTesla

Executable exe b023a34548a0f58904fab9d0c977edd8eef12a8185661dcb51b9937df768aed1

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/51465/
  
URLhaus
https://urlhaus.abuse.ch/url/444516/
  
Delivery method
Distributed via web download

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