MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea
SHA3-384 hash: 2aef64997ed7dacd0209346d4360feb5f7d2be92ab43e23b9d87713ba3358e3e78195110c7c89902e5c555377ccd3c66
SHA1 hash: b033a6d7677ec09f7733ad955f6e4f196c0d7349
MD5 hash: 9a96ed115d2dcd86e3c622da8bf41715
humanhash: foxtrot-happy-colorado-music
File name:Dekont.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'062'400 bytes
First seen:2020-12-09 11:01:51 UTC
Last seen:2020-12-09 13:03:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 24576:njlhVKfe6RxJGX/o1R0C+w5l25bBhLBb+HxoO6gY6gY16o+Anl:njlae6RxJGX/o1R0C+w5l0bBhLBb+HxP
Threatray 1'763 similar samples on MalwareBazaar
TLSH 8635E60096A1C794E5B1F2FB0E64B93953E1ECCAD644BA46EF0D6EA594B3DC4790F308
Reporter abuse_ch
Tags:AgentTesla exe geo Halkbank TUR


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: trv14.armahostdns.com
Sending IP: 78.135.79.16
From: Halkbank Internet Subesi <internet.subesi@halkbank.com.tr>
Subject: 09.12.2020 TARİHLİ DEKONT
Attachment: Dekont.pdf.exe.img (contains "Dekont.pdf.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
157
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Dekont.pdf.exe
Verdict:
Malicious activity
Analysis date:
2020-12-09 11:42:09 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c8684fd1-0f1d-405e-86b5-42d0ed7737d4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/107451/
Detection(s):
SecuriteInfo.com.Generic.mg.9a96ed115d2dcd86.28627.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Running batch commands
Creating a process with a hidden window
Creating a file
Launching cmd.exe command interpreter
Creating a process from a recently created file
Launching a process
Unauthorized injection to a recently created process
Enabling autorun
Unauthorized injection to a system process
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/558910
Signature
.NET source code contains very large array initializations
Contains functionality to register a low level keyboard hook
Creates an undocumented autostart registry key
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
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Multi AV Scanner detection for dropped file
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 328552 Sample: Dekont.pdf.exe Startdate: 09/12/2020 Architecture: WINDOWS Score: 100 41 g.msn.com 2->41 49 Found malware configuration 2->49 51 Yara detected AgentTesla 2->51 53 .NET source code contains very large array initializations 2->53 55 4 other signatures 2->55 10 Dekont.pdf.exe 4 2->10         started        signatures3 process4 file5 39 C:\Users\user\AppData\...\Dekont.pdf.exe.log, ASCII 10->39 dropped 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->63 14 cmd.exe 1 10->14         started        16 cmd.exe 2 10->16         started        signatures6 process7 file8 19 test.exe 4 14->19         started        22 conhost.exe 14->22         started        37 C:\Users\user\Desktop\test.exe, PE32 16->37 dropped 24 conhost.exe 16->24         started        process9 signatures10 57 Multi AV Scanner detection for dropped file 19->57 59 Machine Learning detection for dropped file 19->59 61 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->61 26 InstallUtil.exe 6 19->26         started        30 cmd.exe 1 19->30         started        process11 dnsIp12 43 smtp.aislpstore.com 26->43 45 us2.smtp.mailhostbox.com 208.91.198.143, 49735, 49736, 587 PUBLIC-DOMAIN-REGISTRYUS United States 26->45 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 26->65 67 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 26->67 69 Tries to steal Mail credentials (via file access) 26->69 71 5 other signatures 26->71 32 reg.exe 1 1 30->32         started        35 conhost.exe 30->35         started        signatures13 process14 signatures15 47 Creates an undocumented autostart registry key 32->47
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-12-09 11:02:11 UTC
AV detection:
17 of 28 (60.71%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wvvuokcznlcarmd3cifsncq3hql5wtgrffowyyzakfvoes62ctva._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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2ee7df5c51dfb513822dcac9c5cdc1bac93aab89c632ad7defef8dea9f93fb4f
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320cad5692bb7d085732786b1823aac9c24aed4a2d1132763d3541f90380708e
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92d9b1922bebbb60f7ca75eb99220f92bbdf687af32a4a966ec90fd562dfe96e
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bd7bc6f7691334319750e484ab95397c67b973ec0c0efd25c1227c4328630b28
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d79ac65fba80d34f0012d82182dd67ca707475ff4628bf5012d2a3d4db7d413b
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dbab4aaee06c5037f2fe6675c51efd5be443700237aa42527abfb1049b3e5aea
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ecf592d2aed1d17b4c75e72a40edeb9b4396c8c9181cee7519ebe63bb7391870
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fb4beef772683d5977d8c5a3c65365efbcddc966795944f52d9f7f54e9b4ee7b
AgentTesla
+ 1'753 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/201209-6p1w1eg7l6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
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
Executes dropped EXE
Modifies WinLogon for persistence
AgentTesla
Unpacked files
SH256 hash:
0bfd82ffdf268ee2c9f75c826b8c393ca5c51919d0189385b71f76d948fa8d5e
MD5 hash:
5782faf9633c0992848ad2054076547e
SHA1 hash:
148e1229d045549eac5f13280c44b6d47149257d
Link:
https://www.unpac.me/results/00ac0a9a-6bd8-4e80-9793-7993ecf1bfea/
SH256 hash:
4f690f3cf792f24a571f09740cf25d0979bde8c11180a26864056643c30479cd
MD5 hash:
304cc4a1948539064cfec5b70bd83e21
SHA1 hash:
32b3754f52323fd71b8349f01c9dd4bc4fecd880
Link:
https://www.unpac.me/results/00ac0a9a-6bd8-4e80-9793-7993ecf1bfea/
SH256 hash:
f9c341679423a3ac010b7da292ab6d1ef0ae7e995cd085ada95e1384ba3af38c
MD5 hash:
b1c72a8e99542c64507470535686ddd9
SHA1 hash:
fe3bec4b6e2b7091db68705feb59090c24c8b6ed
Link:
https://www.unpac.me/results/00ac0a9a-6bd8-4e80-9793-7993ecf1bfea/
SH256 hash:
9790a6aa3d28d77d320c8f32938122c1212b7f6291daa7511f854a3fcd0fb037
MD5 hash:
6e53bc3c0364eefd1d448d25e026975d
SHA1 hash:
f11ea87b0638531f442b113feb19dbaae81ad518
Link:
https://www.unpac.me/results/00ac0a9a-6bd8-4e80-9793-7993ecf1bfea/
SH256 hash:
b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea
MD5 hash:
9a96ed115d2dcd86e3c622da8bf41715
SHA1 hash:
b033a6d7677ec09f7733ad955f6e4f196c0d7349
Link:
https://www.unpac.me/results/00ac0a9a-6bd8-4e80-9793-7993ecf1bfea/
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/b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea

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:ach_AgentTesla_20200929
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:win_agent_tesla_v1
Create hunting rule
Author:Johannes Bader @viql
Description:detects Agent Tesla

File information

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

Malspam

AgentTesla

img 47f6eb0a2af96804606e3b84ee5da7cef9a6393d74217de60d2e79abdab723c1

AgentTesla

Executable exe b56b4728596ac408b07b120b268a1b3c17db4cd1295d6c6320516ae24bda14ea

(this sample)

  
Dropped by
MD5 f722ae4705c75fb10399160e60207355
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/107451/
  
Dropped by
SHA256 47f6eb0a2af96804606e3b84ee5da7cef9a6393d74217de60d2e79abdab723c1

Comments