MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6f28dbb8b4fbf8e652d27a5831bb78cc397b8e1d4c8ec60f49013fdb31c3bf80. 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: 12


Intelligence 12 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6f28dbb8b4fbf8e652d27a5831bb78cc397b8e1d4c8ec60f49013fdb31c3bf80
SHA3-384 hash: 4fadc63bf3920094ab79c22de5f42b2c9a3e989b07c34bf5b6417d9295b637df0c3f72a9111df3cc1917467c710c47ef
SHA1 hash: 6dd8173b1d10f65062647c501ba85c758c43b57d
MD5 hash: 96897c86f51f3ffb7efc497db4d82803
humanhash: lake-nineteen-ten-idaho
File name:OOLU2115327710.xls.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:2'105'856 bytes
First seen:2021-02-01 14:34:15 UTC
Last seen:2021-02-01 16:29:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:fN5P2tI9PRWik+hX5mRzP6sRA5qaMFbtKhM3/g5bfudZFYxnsULQfViC6L2vd4fw:j2tI9Py
Threatray 2'362 similar samples on MalwareBazaar
TLSH A3A53D463EFB539C29B7CD083CA6680A2435EE58EF5EC352A897E10C1DB3114D8B7D99
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
137
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
OOLU2115327710.xls.exe
Verdict:
Malicious activity
Analysis date:
2021-02-01 14:44:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/be8b81c3-0e4c-42e1-b311-31e71ac25862

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Spynet
Create hunting rule
Link:
https://www.capesandbox.com/analysis/114966/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Launching a process
Creating a process with a hidden window
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a window
Using the Windows Management Instrumentation requests
Sending a UDP request
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Adding exclusions to Windows Defender
Result
Verdict:
MALICIOUS
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/595427
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Connects to a pastebin service (likely for C&C)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Suspicious Double Extension
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)
Uses the Telegram API (likely for C&C communication)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 346758 Sample: OOLU2115327710.xls.exe Startdate: 01/02/2021 Architecture: WINDOWS Score: 100 42 api.telegram.org 2->42 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected AgentTesla 2->48 50 Yara detected AntiVM_3 2->50 52 7 other signatures 2->52 8 OOLU2115327710.xls.exe 20 5 2->8         started        13 winfiles.exe 15 5 2->13         started        15 winfiles.exe 2->15         started        signatures3 process4 dnsIp5 44 pastebin.com 104.23.99.190, 443, 49723, 49741 CLOUDFLARENETUS United States 8->44 36 C:\Users\user\...\OOLU2115327710.xls.exe.log, ASCII 8->36 dropped 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 8->64 66 Adds a directory exclusion to Windows Defender 8->66 17 OOLU2115327710.xls.exe 2 5 8->17         started        22 powershell.exe 26 8->22         started        68 Multi AV Scanner detection for dropped file 13->68 70 Machine Learning detection for dropped file 13->70 24 powershell.exe 13->24         started        26 winfiles.exe 13->26         started        file6 signatures7 process8 dnsIp9 38 api.telegram.org 149.154.167.220, 443, 49752, 49753 TELEGRAMRU United Kingdom 17->38 40 192.168.2.1 unknown unknown 17->40 32 C:\Users\user\AppData\...\winfiles.exe, PE32 17->32 dropped 34 C:\Users\...\winfiles.exe:Zone.Identifier, ASCII 17->34 dropped 54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->54 56 Tries to steal Mail credentials (via file access) 17->56 58 Tries to harvest and steal ftp login credentials 17->58 60 3 other signatures 17->60 28 conhost.exe 22->28         started        30 conhost.exe 24->30         started        file10 signatures11 process12
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/6f28dbb8b4fbf8e652d27a5831bb78cc397b8e1d4c8ec60f49013fdb31c3bf80/
Threat name:
ByteCode-MSIL.Trojan.Tnega
Create hunting rule
Status:
Malicious
First seen:
2021-02-01 03:09:50 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
17 of 46 (36.96%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n4unxofu7p4omuwspjmddo3yzq4xxdq5jshmmd2jae75wmodx6aa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
05edc3fe4fb4bfa22e5e3ce66e66a4f258adc1aebbb26142bafd1a9264feb4b9
AgentTesla
2a24e55affebdf336e67fe9ba8f667b095784a6bc6857ce8b89e7c48c8a8fd21
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491139cde010544822237cf87d9a34ace22a8e2bfd4eb7cc5ebd060e465e63f7
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6b75182568a1cf2fef851977be460536fe4a0af4aaf05b41a253c53f2af276fc
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73e40979ebead1adc1243599595e07cbda41aeeaa9c0d4663a6675ccd0f40a84
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9898c37e93d4e9a054c013f34ca57c1aa9130112c9104386219f94e1125d0b97
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994ba670bf29b750e1320619b3ebade5035cba65e91be47e0f3f33bfa83b38c1
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9ada932ad6919b4f21da2eb872e9af9ab1da22a818a13c57ae65b8679c6c7be1
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9ed750b07b16001b5f78dd725fb6ada74d583075fd25dd66aaa65f80be26e541
AgentTesla
a97528499bee868023a6898c85da34f9ed73a5a12b8a3a01817a88d82a8c5641
AgentTesla
+ 2'352 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla evasion keylogger persistence ransomware spyware stealer trojan
Link:
https://tria.ge/reports/210201-1hhp5a2bns/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Windows security modification
AgentTesla
Modifies Windows Defender Real-time Protection settings
Turns off Windows Defender SpyNet reporting
Windows security bypass
Unpacked files
SH256 hash:
65908d4aee920f6bae7df16a443f6ddc86f7863af618ff3eb4106d4575a36750
MD5 hash:
622173077e724c6f48c62ef0f02f763d
SHA1 hash:
e3f4a3bc7900948227c0350950c1aa52d2e7e55a
Link:
https://www.unpac.me/results/f9013b21-d3f2-47b0-b447-1db2a2cfbfb8/
SH256 hash:
8e06253dc891694ef661f4a70a8bbb81f4683468578e32a8d1630454c4d858e6
MD5 hash:
7cbf2aeb6db8f8dc46553071916bcd88
SHA1 hash:
1bab200f578ff883dfc7857d19de8e35766d1673
Link:
https://www.unpac.me/results/f9013b21-d3f2-47b0-b447-1db2a2cfbfb8/
SH256 hash:
6f28dbb8b4fbf8e652d27a5831bb78cc397b8e1d4c8ec60f49013fdb31c3bf80
MD5 hash:
96897c86f51f3ffb7efc497db4d82803
SHA1 hash:
6dd8173b1d10f65062647c501ba85c758c43b57d
Link:
https://www.unpac.me/results/f9013b21-d3f2-47b0-b447-1db2a2cfbfb8/
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/6f28dbb8b4fbf8e652d27a5831bb78cc397b8e1d4c8ec60f49013fdb31c3bf80

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:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/114966/

Comments