MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cbc170e21690671a4d72358dff18495f7fc2b5278eb331933de84fcebaa7f4e. 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: 4cbc170e21690671a4d72358dff18495f7fc2b5278eb331933de84fcebaa7f4e
SHA3-384 hash: 9e0212aebc64acdef1485f7cc573f4a0a0477b207c4b614102c6713212e7c97e3d32e3ff02c32434f8f0d6fd981d9c40
SHA1 hash: e6f8648bac249791b90f5719ff074821a5b2545e
MD5 hash: 442d6a9c7613eaf19ea5f7cd4605389d
humanhash: summer-earth-snake-uncle
File name:Tender no- OYM2563.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:794'624 bytes
First seen:2020-08-27 05:39:36 UTC
Last seen:2020-08-27 07:19:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 24576:iXdgseMnCyaNiYHDFEt+8VynrTWS9cvAUllc0zG:itgXTC4n3WScxlc0z
Threatray 10'325 similar samples on MalwareBazaar
TLSH 9BF4E14A032A8B3DCE4CB6BD71A040ADE6316782EF34D1D4DF0B65F8595B25EE09D2C6
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: zimbra161-ind.megavelocity.net
Sending IP: 43.224.137.51
From: LRS Ltd Tendering Team <tendering@lrsservices.in>
Reply-To: Yikha Singa <ozainscott@gmail.com>
Subject: RFQ- OYM/2563 (Re-Bid No. RFQ-OYM/2563)
Attachment: Tender no- OYM2563.img (contains "Tender no- OYM2563.exe")

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

Intelligence

File Origin
# of uploads :
2
# of downloads :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/51589/
Detection(s):
SecuriteInfo.com.Gen.NN.ZemsilF.34196.Wm0@aCluzk.5373.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/452257
Signature
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Modifies the hosts file
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: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Agent Tesla Trojan
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 278488 Sample: Tender no- OYM2563.exe Startdate: 27/08/2020 Architecture: WINDOWS Score: 100 37 Found malware configuration 2->37 39 Malicious sample detected (through community Yara rule) 2->39 41 Multi AV Scanner detection for dropped file 2->41 43 11 other signatures 2->43 7 Tender no- OYM2563.exe 7 2->7         started        process3 file4 21 C:\Users\user\AppData\...\hBfihBfrQbJa.exe, PE32 7->21 dropped 23 C:\Users\...\hBfihBfrQbJa.exe:Zone.Identifier, ASCII 7->23 dropped 25 C:\Users\user\AppData\Local\...\tmp4D11.tmp, XML 7->25 dropped 27 C:\Users\user\...\Tender no- OYM2563.exe.log, ASCII 7->27 dropped 10 Tender no- OYM2563.exe 15 2 7->10         started        15 schtasks.exe 1 7->15         started        17 Tender no- OYM2563.exe 7->17         started        process5 dnsIp6 31 smtp.yandex.ru 77.88.21.158, 49724, 587 YANDEXRU Russian Federation 10->31 33 checkip.us-east-1.prod.check-ip.aws.a2z.com 52.70.92.19, 49723, 80 AMAZON-AESUS United States 10->33 35 3 other IPs or domains 10->35 29 C:\Windows\System32\drivers\etc\hosts, ASCII 10->29 dropped 45 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->45 47 Tries to steal Mail credentials (via file access) 10->47 49 Tries to harvest and steal ftp login credentials 10->49 51 3 other signatures 10->51 19 conhost.exe 15->19         started        file7 signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4cbc170e21690671a4d72358dff18495f7fc2b5278eb331933de84fcebaa7f4e/
Threat name:
ByteCode-MSIL.Spyware.Noon
Create hunting rule
Status:
Malicious
First seen:
2020-08-27 05:41:05 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=js6bodrbnedhdjgxenmn74mesx37yk2spdvtggjt32cpz25kp5ha._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
2bff2eb9a8f7c497688208e9031adfc146bad406453325a3eeeb052f840e163f
AgentTesla
332287b244dfebbabac15b5b4dd3fc3bb6f488d3460c2de5259254136040d0e4
AgentTesla
35a38e46b89b6145d415c29cf2a3d5c746e2f8b6728fc1a0a4d78865e7ed9b59
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36ccd31c1ec6282731d19195236079e96b13c2c387703265ac788f46f1777c95
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38fcb333238cb4390662b70073f768dd5928d7995b77747add4f2acc8dff4db0
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4a4688aef8ed33c99bda67183d11393956d9e29453ebc230bce72d06f788520a
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5f50699c3144405b2458bac5d4ae1c6f9945dc5c91641a91326602d0b387f7b9
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89116942312d8a60d9dff7624d4550b1f84def97b0251cb705e705e1d125edcc
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d2d83fb7446e0969d3ffab161cb2d258041c9c0e686de6dc978b334b444b0512
AgentTesla
f993204d13f7fb5d573fab0a29f3064ab7df3cea32816a6af8df3f22e49c9f81
AgentTesla
+ 10'315 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer trojan spyware family:agenttesla
Link:
https://tria.ge/reports/200827-p84jwy2pkx/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4cbc170e21690671a4d72358dff18495f7fc2b5278eb331933de84fcebaa7f4e

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

img 8e38d1f537262946c8ce813397cb55dc6876971b701459f88577f6a4a180e3d2

AgentTesla

Executable exe 4cbc170e21690671a4d72358dff18495f7fc2b5278eb331933de84fcebaa7f4e

(this sample)

  
Dropped by
MD5 a9cf2415ddfec5b8bb62678d65f20a0e
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 8e38d1f537262946c8ce813397cb55dc6876971b701459f88577f6a4a180e3d2
Cape
Cape
https://www.capesandbox.com/analysis/51589/

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