MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 50b7c1ac2d7e7bf983d90869302cf856503a1fa93fc9038f02e954872180e4ab. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 50b7c1ac2d7e7bf983d90869302cf856503a1fa93fc9038f02e954872180e4ab
SHA3-384 hash: d00effd0c1060340d5f2030f85480a270579998e3bd0fc0fd58ac58faa4ce64095b07cf60fd45f4106ab6cfc8de20e32
SHA1 hash: 4e87ea80f155d9ba28a50de7b552b9a8ae213f80
MD5 hash: dcb8541b6e583d00f1311136e18b7bb1
humanhash: hawaii-michigan-oranges-summer
File name:MV TBN CALL PORT FOR LOADING COAL_pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:654'848 bytes
First seen:2020-08-05 08:25:10 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:Nvuvz9ckh7rV8LCd25mGPzFwVXi78noB0cizGfb9x6Z5eeeeeeeeeeeeeeeee/ea:NmvaMFqjPJwJO8oqcRoU
Threatray 10'638 similar samples on MalwareBazaar
TLSH 88D4E14E6C85468AF0B54DBF5D761BA34D56E48FF914C103A5B42D23203BE8EBC62F26
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: s2.mysecurewebserver.com
Sending IP: 202.75.55.190
From: "acct@fiveocean.co.kr" <ho@moknco.com>
Subject: MV TBN CALL PORT FOR LOADING COAL
Attachment: MV TBN CALL PORT FOR LOADING COAL_pdf.rar (contains "MV TBN CALL PORT FOR LOADING COAL_pdf.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
62
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39196/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.11362.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410552
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257541 Sample: MV TBN CALL PORT FOR LOADIN... Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 51 Found malware configuration 2->51 53 Yara detected AgentTesla 2->53 55 Yara detected AntiVM_3 2->55 57 6 other signatures 2->57 6 MV TBN CALL PORT FOR LOADING COAL_pdf.exe 1 2->6         started        10 WNRUXJ.exe 2->10         started        12 WNRUXJ.exe 1 2->12         started        process3 file4 25 MV TBN CALL PORT F...NG COAL_pdf.exe.log, ASCII 6->25 dropped 59 Injects a PE file into a foreign processes 6->59 14 MV TBN CALL PORT FOR LOADING COAL_pdf.exe 2 5 6->14         started        19 WNRUXJ.exe 2 10->19         started        61 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->61 63 Machine Learning detection for dropped file 12->63 65 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 12->65 21 WNRUXJ.exe 2 12->21         started        23 WNRUXJ.exe 12->23         started        signatures5 process6 dnsIp7 31 smtp.yandex.ru 77.88.21.158, 49733, 49736, 587 YANDEXRU Russian Federation 14->31 33 smtp.yandex.com 14->33 27 C:\Users\user\AppData\Roaming\...\WNRUXJ.exe, PE32 14->27 dropped 29 C:\Users\user\...\WNRUXJ.exe:Zone.Identifier, ASCII 14->29 dropped 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->37 39 Moves itself to temp directory 14->39 41 Tries to steal Mail credentials (via file access) 14->41 43 Installs a global keyboard hook 14->43 35 smtp.yandex.com 19->35 45 Tries to harvest and steal ftp login credentials 19->45 47 Tries to harvest and steal browser information (history, passwords, etc) 19->47 49 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->49 file8 signatures9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/50b7c1ac2d7e7bf983d90869302cf856503a1fa93fc9038f02e954872180e4ab/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 04:18:40 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kc34dlbnpz57ta6zbbutalhykziduh5jh7eqhdyc5fkioima4svq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0f9c3e7962330f174a7529d7edd7981c9ffb4f0f1d6eee585a7f3467b5c06a49
AgentTesla
1546f9a4e9f744fd5252592238121b3fca461a09718c9b5ac14b145c7cffa467
AgentTesla
1c9d77531fafcb6b976656bea2a0e647688a049499956979b6d121640c6b29ab
AgentTesla
41355f2507c477d56150ad6facafd27120e0bceb06c905af89748246d3212a9f
AgentTesla
55114bd780868f8b5c0ac827ed3ffa156e09b1949f1d486ffbfd79318ccf1ef4
AgentTesla
691eb9a4675c76f72ca03595137e3215b3ddf27c040d7bc871301ef847b0f609
AgentTesla
6ef9a45a617adf0e0ff740e37c865325289a110394725c393c314a3128a2575f
AgentTesla
b2532be6f4f18504d0cdb50f75d84d41880203d3ad0d51a499ea8d48b2d97a64
AgentTesla
d34d2c3fe83f82a8a0faa213fe60202f765aadf5895fbe12996d40db44afadc5
AgentTesla
ddd4cacc7365872cd4b9d06f4a2de4f131191dae071ed5430ed0399014f1aac2
AgentTesla
+ 10'628 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200805-p4ratzancj/
Behaviour
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads user/profile data of local email clients
Reads data files stored by FTP clients
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/50b7c1ac2d7e7bf983d90869302cf856503a1fa93fc9038f02e954872180e4ab

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

rar 1014dbb3d0133bb03dc87b26b5293cc30cfafa470be6a881817da836e72fb0cd

AgentTesla

Executable exe 50b7c1ac2d7e7bf983d90869302cf856503a1fa93fc9038f02e954872180e4ab

(this sample)

  
Dropped by
MD5 6b256376b4ccd997f1516ce233d32fd6
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 1014dbb3d0133bb03dc87b26b5293cc30cfafa470be6a881817da836e72fb0cd
Cape
Cape
https://www.capesandbox.com/analysis/39196/

Comments