MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 37b6577e7f69894856dc04164545dd03abca3914018a24cb45f2c07f9909189a. 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: 37b6577e7f69894856dc04164545dd03abca3914018a24cb45f2c07f9909189a
SHA3-384 hash: 60cd47b77473f0b13f155c15b13ade718fbdea0e768e186103486fb6bfd456557185305a9172b193b2760f13fcf93e55
SHA1 hash: f386443e3ddaf50d7d36e1a7e2649aa57558da1f
MD5 hash: 3225e3ab17e57f0546b599a1b134bad7
humanhash: magazine-fish-cola-bravo
File name:Inq_Amanastone 5678.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:877'568 bytes
First seen:2020-08-27 08:25:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'633 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 6144:h3v9I2AB8SUCkaKQJrU7Ics8WvPcVgVPkKYhMtN1bM/I1vegpnanVhgEY6KpiYbq:jDtRFGrUEcsjdVisMA5zahgEY6Kpi
Threatray 9'730 similar samples on MalwareBazaar
TLSH FB15083E3281A905E53D86710468DAC16770A5473B51CF1FB9C71B8CEF01A8F7B968AE
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: posti.antenniserveri.fi
Sending IP: 178.33.154.99
From: Hamish <Hamish@amanastone.com.au>
Subject: Inquiry_Amanastone 5678
Attachment: Inq_Amanastone 5678.iso (contains "Inq_Amanastone 5678.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
79
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/51682/
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
Unauthorized injection to a recently created process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/452413
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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)
Sigma detected: Add file from suspicious location to autostart registry
Writes to foreign memory regions
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 278566 Sample: Inq_Amanastone 5678.exe Startdate: 27/08/2020 Architecture: WINDOWS Score: 100 39 Multi AV Scanner detection for submitted file 2->39 41 Yara detected AgentTesla 2->41 43 Sigma detected: Add file from suspicious location to autostart registry 2->43 45 2 other signatures 2->45 8 Inq_Amanastone 5678.exe 7 2->8         started        process3 file4 29 C:\Users\user\AppData\Roaming\chu.exe, PE32 8->29 dropped 31 C:\Users\user\AppData\...\InstallUtil.exe, PE32 8->31 dropped 33 C:\Users\user\...\chu.exe:Zone.Identifier, ASCII 8->33 dropped 35 C:\Users\user\...\Inq_Amanastone 5678.exe.log, ASCII 8->35 dropped 11 chu.exe 3 8->11         started        14 cmd.exe 1 8->14         started        process5 signatures6 47 Multi AV Scanner detection for dropped file 11->47 49 Machine Learning detection for dropped file 11->49 51 Writes to foreign memory regions 11->51 55 2 other signatures 11->55 16 InstallUtil.exe 2 11->16         started        19 cmd.exe 1 11->19         started        53 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->53 21 conhost.exe 14->21         started        23 reg.exe 1 14->23         started        process7 signatures8 37 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->37 25 conhost.exe 19->25         started        27 reg.exe 1 19->27         started        process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/37b6577e7f69894856dc04164545dd03abca3914018a24cb45f2c07f9909189a/
Threat name:
ByteCode-MSIL.Trojan.CryptInject
Create hunting rule
Status:
Malicious
First seen:
2020-08-27 08:27:05 UTC
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=g63fo7t7ngeuqvw4aqlekro5aov4uoiuagfcjs2f6lah7gijdcna._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 9'720 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer family:agenttesla
Link:
https://tria.ge/reports/200827-w27fgrpfzn/
Behaviour
AgentTesla Payload
Agenttesla family
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/37b6577e7f69894856dc04164545dd03abca3914018a24cb45f2c07f9909189a

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

iso 06375f73417c1c3178952d4ceb43fcfab3d6ba37d27ba1957a5798299019f730

AgentTesla

Executable exe 37b6577e7f69894856dc04164545dd03abca3914018a24cb45f2c07f9909189a

(this sample)

  
Dropped by
MD5 3523260bbeae2851b0aa39ce653ea53b
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 06375f73417c1c3178952d4ceb43fcfab3d6ba37d27ba1957a5798299019f730
Cape
Cape
https://www.capesandbox.com/analysis/51682/

Comments