MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4436caf91d33d8044d493dda9265fb32c40816f2bd80ae40ac3697bb6605e2aa. 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: 4


Intelligence 4 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4436caf91d33d8044d493dda9265fb32c40816f2bd80ae40ac3697bb6605e2aa
SHA3-384 hash: ff4a97e3a0b07f806ec9aa6489b7f350c6d9f60fa9c9d2d6df1f7c7726545bc3b77ac85a754f2e0f380f78ca76f85ab3
SHA1 hash: 91321458a6b22cab92925567951771a760b92e92
MD5 hash: 2a452f4163bb26a2dbeb4ffb26d6dc5c
humanhash: princess-texas-xray-nitrogen
File name:CF and FDA covid-19 certificate test kits.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:431'104 bytes
First seen:2020-04-06 10:03:44 UTC
Last seen:2020-04-06 10:55:13 UTC
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:W6kdQgmow1k4N5Ij8B//XPpccKnUSbyhe+Kv9rehw5xlpGwPFLH57nDVEh:SQF3NKjO//XPlGeKlreuplPFH5DDVE
Threatray 10'726 similar samples on MalwareBazaar
TLSH 0394DF01B279FBA6D6398BF2002652150FF1769F31ADE3680CC2A0EB19B5F5545D2E3B
Reporter abuse_ch
Tags:AgentTesla COVID-19 exe


Avatar
abuse_ch
COVID-19 themed malspam distributing AgentTesla:

HELO: server.clinicasom.com
Sending IP: 185.76.77.225
From: WORLD HEALTH ORGANIZATION <soporte@clinicasom.com>
Subject: CF and FDA covid-19 certificate test kits
Attachment: CF and FDA covid-19 certificate test kits.img (contains "CF and FDA covid-19 certificate test kits.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Siggen9.34254.242.10069.UNOFFICIAL
Create hunting rule

Gathering data
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-04-06 10:36:26 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
23 of 31 (74.19%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=iq3mv6i5gpmaitkjhxnjezp3glcaqfxsxwak4qfmg2l3wzqf4kva._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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e4efb498ca0db100d4035ed13792789fe96ec158561fe3348149202e57e64658
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eaf438c55827cdc66854335ddd88907d8cfc389a4ddf02f8bfda152e5b1766a5
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edc66f02786cde09a0f5a3481ff8286b94477537373b7edd71b4670542a98f1b
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fc2726e2dfd571543def4f0a6398039251f97bf7a317d035c4c21846cd99bd6b
AgentTesla
+ 10'716 additional samples on MalwareBazaar
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_g2
Create hunting rule
Author:Daniel Plohmann <daniel.plohmann@fkie.fraunhofer.de>

File information

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

Malspam

AgentTesla

img 82e9d4bddaf991393ddbe6bec3dc61943f8134feb866e3404af22adf7b077095

AgentTesla

Executable exe 4436caf91d33d8044d493dda9265fb32c40816f2bd80ae40ac3697bb6605e2aa

(this sample)

  
Dropped by
MD5 0b4cceb7b6dbc6c39bfde827236e603d
  
Dropped by
SHA256 82e9d4bddaf991393ddbe6bec3dc61943f8134feb866e3404af22adf7b077095
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 4a0ba8a20e53521dee8047dc7f0742b00fdc5aef1637f2e7809886fd95d6c56d
  
Dropped by
MD5 7ac98ee02d4696428663d88e9a2fe105

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

Comments