MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3da786cb07886608a959220985ffdfb8da3bee26e6d0d8bf4b24a9d0571efbb5. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3da786cb07886608a959220985ffdfb8da3bee26e6d0d8bf4b24a9d0571efbb5
SHA3-384 hash: e3286476d266526abf26b555b8c91049578c735b0f32fc5a81fbac6e1e9a7f99662f1638c703748d74d3841fa56fb0f6
SHA1 hash: 295695863c18ca04f97ec6aabb6ed9a620c6f99c
MD5 hash: bcde4ea8f4e5f553621ff3b18cc532bf
humanhash: early-single-leopard-bakerloo
File name:INVOICE FYI.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:797'184 bytes
First seen:2022-02-07 07:21:37 UTC
Last seen:2022-02-08 08:08:10 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'662 x AgentTesla, 19'476 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:axjApRzZGvhglIbu7hPlr4qzFllR8W6szcQG67S+9Gf1NyK6:axjA7ZGvOGb2h9cqn8W3z7G6G+4f96
Threatray 14'347 similar samples on MalwareBazaar
TLSH T1F105F0B5B3B14DA2EAEFDB348772572C0F74D235E107B36E2884605D0C80BA54E569EB
File icon (PE):PE icon
dhash icon b89c66662636decc (9 x AgentTesla, 1 x Smoke Loader)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
151
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV3
Create hunting rule
Link:
https://www.capesandbox.com/analysis/234039/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.25285.29857.31097.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Setting a keyboard event handler
Sending a custom TCP request
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
keylogger obfuscated packed
Link:
https://www.filescan.io/uploads/6200c89daccdde96b5e41ca4/reports/4eb99db6-8fc4-4aa3-aa52-d45d624fc040/overview
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.
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b8bf745d-51ac-4735-9091-1ee6e016f80f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/935052
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
.NET source code references suspicious native API functions
Contains functionality to log keystrokes (.Net Source)
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
Malicious sample detected (through community Yara rule)
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)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Suspicius Add Task From User AppData Temp
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 AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 567533 Sample: INVOICE FYI.exe Startdate: 07/02/2022 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Multi AV Scanner detection for dropped file 2->49 51 17 other signatures 2->51 7 INVOICE FYI.exe 6 2->7         started        11 tKZVPq.exe 4 2->11         started        13 tKZVPq.exe 2 2->13         started        process3 file4 29 C:\Users\user\AppData\...\gYKvriksgbsEBL.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\Local\...\tmp7121.tmp, XML 7->31 dropped 33 C:\Users\user\AppData\...\INVOICE FYI.exe.log, ASCII 7->33 dropped 53 Installs a global keyboard hook 7->53 55 Injects a PE file into a foreign processes 7->55 15 INVOICE FYI.exe 2 5 7->15         started        19 schtasks.exe 1 7->19         started        57 Multi AV Scanner detection for dropped file 11->57 59 Machine Learning detection for dropped file 11->59 21 schtasks.exe 1 11->21         started        23 tKZVPq.exe 11->23         started        signatures5 process6 file7 35 C:\Users\user\AppData\Roaming\...\tKZVPq.exe, PE32 15->35 dropped 37 C:\Windows\System32\drivers\etc\hosts, ASCII 15->37 dropped 39 C:\Users\user\...\tKZVPq.exe:Zone.Identifier, ASCII 15->39 dropped 41 Modifies the hosts file 15->41 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->43 25 conhost.exe 19->25         started        27 conhost.exe 19->27         started        signatures8 process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3da786cb07886608a959220985ffdfb8da3bee26e6d0d8bf4b24a9d0571efbb5/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-07 07:22:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
22 of 28 (78.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hwtynsyhrbtarkkzeieyl767xdndx3rg43inrp2lesu5avy67o2q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
1fc86c47ffbc922b4794aa568d681c4632cb69a41a3b89e6bca1c49cc87f0c1f
AgentTesla
5a862706c1dc9c0a3ef7da811484cc81a6bb9954b4f2a2f5624594a3c81b3604
AgentTesla
6005e48511a459ee6e164fda64dd8294b8d24fb071fbbca710b8474ea96493f8
AgentTesla
7e8767e4d9b2e9e80c0f7b2a191efb788f77f6282a987c07e4ff6474d3092d0c
AgentTesla
8db415977dd7c96f0dc85b6adcdd60a714f9e4a2655afb843e776da2e22c6082
AgentTesla
a6a036e31e8bb26cf47dd8d3bee915debee906e4cf399ff7da29ca2b785d8cee
AgentTesla
a6d609e819f7b4697a560ea52e1cfb32a2ecbd196acca96b7929f8b8462d3910
AgentTesla
cbbbe050961a250cf380309380aa374ba678aa573252704383a52ca6d1ad9768
AgentTesla
+ 14'337 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/220207-h69c9ahaep/
Behaviour
Creates scheduled task(s)
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
341ab04f6a6f755519381a802564a5d191bc1dcb9ed66adcc85ba48dded8f564
MD5 hash:
042b086e6873a47dcc39d5154854fdee
SHA1 hash:
e1f6719823c16d9144d584411a329fce8cde4044
Link:
https://www.unpac.me/results/c8bb9a83-c9cd-4eec-a4fd-4c9900dae812/
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/c8bb9a83-c9cd-4eec-a4fd-4c9900dae812/
SH256 hash:
0c2b9d7e88494bf33818f521280542695f2d081a42749bd37403acaa7b0fee82
MD5 hash:
cab853d3fa91bd200b5a68349d867313
SHA1 hash:
1b4c6de4c376e49c4ddc70bca0ede5ace767fcd8
Link:
https://www.unpac.me/results/c8bb9a83-c9cd-4eec-a4fd-4c9900dae812/
SH256 hash:
3da786cb07886608a959220985ffdfb8da3bee26e6d0d8bf4b24a9d0571efbb5
MD5 hash:
bcde4ea8f4e5f553621ff3b18cc532bf
SHA1 hash:
295695863c18ca04f97ec6aabb6ed9a620c6f99c
Link:
https://www.unpac.me/results/c8bb9a83-c9cd-4eec-a4fd-4c9900dae812/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3da786cb0788/report/overview.html
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
Create hunting rule
Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:MALWARE_Win_AgentTeslaV3
Create hunting rule
Author:ditekSHen
Description:AgentTeslaV3 infostealer payload
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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

Executable exe 3da786cb07886608a959220985ffdfb8da3bee26e6d0d8bf4b24a9d0571efbb5

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/234039/

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