MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66b15ee82b31364bbb038c7a2f60fac0057d01b0865b2b71a4418293fc9e056d. 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: 6


Intelligence 6 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 66b15ee82b31364bbb038c7a2f60fac0057d01b0865b2b71a4418293fc9e056d
SHA3-384 hash: b81513b34eeec87825f024df3b155ab3aad467923b4ce483830456ef95da65437db8f77b266f98c40116fa9b6a129da1
SHA1 hash: 3c3df6e2bb55f8870b9eb9da60008ea58972a20e
MD5 hash: 4c0812477679e4c34663933be5c5f9fb
humanhash: apart-eight-foxtrot-zebra
File name:citat.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:519'168 bytes
First seen:2020-07-07 08:32:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'599 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:OgcH3veU+BHtCOa/8DpZN8fb+/1TSXFsG0jZw8:iWU+xBXDp0K/V0sGV8
Threatray 10'617 similar samples on MalwareBazaar
TLSH A0B4BE7032A69FA7C5390BF5A52025404FF0399B653DD298AEC460DB51F6F888E91FB3
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: server.linux66.papaki.gr
Sending IP: 136.243.173.169
From: Margita Šegrt <margita@suton.ba>
Subject: citat
Attachment: citat.zip (contains "citat.exe")

AgentTesla SMTP exfil server:
smtp.yandex.com:587

Intelligence

File Origin
# of uploads :
1
# of downloads :
78
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/22062/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Enabling autorun with Startup directory
Unauthorized injection to a system process
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66b15ee82b31364bbb038c7a2f60fac0057d01b0865b2b71a4418293fc9e056d/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2020-07-07 08:34:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=m2yv52blge3exoydrr5c6yh2yacx2anqqznsw4neigbjh7e6avwq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'607 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/200707-1jflz5dm96/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetThreadContext
Maps connected drives based on registry
Reads user/profile data of local email clients
Checks BIOS information in registry
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Looks for VMWare Tools registry key
Looks for VirtualBox Guest Additions in registry
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.

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

AgentTesla

zip bd12432d658fd852cc811d97ae1b0363200eea090d672dfa266878fd6fbb84b5

AgentTesla

Executable exe 66b15ee82b31364bbb038c7a2f60fac0057d01b0865b2b71a4418293fc9e056d

(this sample)

  
Dropped by
MD5 4cd72604fd60fbc2086c98e8d5f5d036
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/22062/
  
Dropped by
SHA256 bd12432d658fd852cc811d97ae1b0363200eea090d672dfa266878fd6fbb84b5

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