MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 40d61be66d3c16485ba1276b6dad8756c3e51dd1957246cefee101e42cc07f5d. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments

SHA256 hash: 40d61be66d3c16485ba1276b6dad8756c3e51dd1957246cefee101e42cc07f5d
SHA3-384 hash: 8363915eb6328f24cfb77ce1edfc0a07fa616ccd4ce5f2824eb54ae1d1a24c5db1a923e221336f7f2800abc0dcc0578a
SHA1 hash: 13678245a2b5471e57675a5acb5b1d4630a0ad54
MD5 hash: 541a47965f798233155a33810c2dc726
humanhash: indigo-oregon-maryland-don
File name:541a47965f798233155a33810c2dc726.exe
Download: download sample
Signature AgentTesla
File size:1'171'456 bytes
First seen:2020-11-25 06:44:08 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 24576:VIzb4vjD8U69JyBYtvboWlwlNigKB3gK:V4AI9JSAce+igK
Threatray 1'476 similar samples on MalwareBazaar
TLSH A8456C9C325071EEC86BD175CAA81C68EBA0786B831B8207B02F55AD9F4D987DF145F3
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence


File Origin
# of uploads :
1
# of downloads :
118
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
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
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains very large array initializations
Found evasive API chain (trying to detect sleep duration tampering with parallel thread)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
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: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 322398 Sample: Y4BjMyvyl1.exe Startdate: 25/11/2020 Architecture: WINDOWS Score: 100 33 Multi AV Scanner detection for dropped file 2->33 35 Sigma detected: Scheduled temp file as task from temp location 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 8 other signatures 2->39 7 Y4BjMyvyl1.exe 7 2->7         started        process3 file4 19 C:\Users\user\AppData\...\RXDVinYHJY.exe, PE32 7->19 dropped 21 C:\Users\...\RXDVinYHJY.exe:Zone.Identifier, ASCII 7->21 dropped 23 C:\Users\user\AppData\Local\...\tmp22EA.tmp, XML 7->23 dropped 25 C:\Users\user\AppData\...\Y4BjMyvyl1.exe.log, ASCII 7->25 dropped 41 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->41 43 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->43 45 Injects a PE file into a foreign processes 7->45 47 Found evasive API chain (trying to detect sleep duration tampering with parallel thread) 7->47 11 Y4BjMyvyl1.exe 15 4 7->11         started        15 schtasks.exe 1 7->15         started        signatures5 process6 dnsIp7 27 elb097307-934924932.us-east-1.elb.amazonaws.com 54.243.164.148, 443, 49761 AMAZON-AESUS United States 11->27 29 nagano-19599.herokussl.com 11->29 31 api.ipify.org 11->31 49 Installs a global keyboard hook 11->49 17 conhost.exe 15->17         started        signatures8 process9
Threat name:
ByteCode-MSIL.Backdoor.NanoBot
Status:
Malicious
First seen:
2020-11-24 15:52:49 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of SetThreadContext
Looks up external IP address via web service
Unpacked files
SH256 hash:
40d61be66d3c16485ba1276b6dad8756c3e51dd1957246cefee101e42cc07f5d
MD5 hash:
541a47965f798233155a33810c2dc726
SHA1 hash:
13678245a2b5471e57675a5acb5b1d4630a0ad54
SH256 hash:
c8671a87d685f2354d96f3cfcad530dfa5f3ec535a0f5ec14940d81fb857813b
MD5 hash:
b5358f677850210361f573c7d249c258
SHA1 hash:
215e06e319515d779efa88f7c05b343d6ec3f6a5
SH256 hash:
0ee8df4359b01994b36715b7d7eff8f94cdc29cd951622a918908596101c0916
MD5 hash:
24d43dce6a803ceddda53141e8360285
SHA1 hash:
38178eb284333951b2b687c9e577ef93d921a3a2
SH256 hash:
c6fcf5d515d56cf746b4c4aa4695f11e9ad7f6063a96cda810bf39dc47c5a7a0
MD5 hash:
47509d9db24c975e55c287afdc459fad
SHA1 hash:
4f1f893555c985d7cbba731cf1fdbf49c6ecf793
SH256 hash:
ac03ccbf9ccc70ab164b10951f5e30e0f05ea043b23daaf2d584bce600570dfa
MD5 hash:
273ce1a65b6d2d12fa4347b947cda3de
SHA1 hash:
a8bdb0be36ceaa14b3192f132e8ab575a4a27657
SH256 hash:
3a1277eb0efdb21ebc07bee141f315a5c0bdc672193f3f86c713a427b4f90ac4
MD5 hash:
e0a99b4cb95f2ff236d10630baf71ca7
SHA1 hash:
e23fd061fd2adad43c2960834aae7951ca7d8478
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:win_agent_tesla_v1
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.

Web download

AgentTesla

Executable exe 40d61be66d3c16485ba1276b6dad8756c3e51dd1957246cefee101e42cc07f5d

(this sample)

  
Delivery method
Distributed via web download

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