MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fb37efb44fe9befa68076e623e3f2ba4d1f4f13c65892ce04227be3857b77f04. 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: fb37efb44fe9befa68076e623e3f2ba4d1f4f13c65892ce04227be3857b77f04
SHA3-384 hash: 31dd9ee97883e4d3f1562e84ebc5c6bd4e1d51898ce02a37161a463ad8d14567914eb48fd1a1508f01c82b43b2db925e
SHA1 hash: 4b09c6fb034a8643ab80a32a11aec2bbfc60ec69
MD5 hash: 7f9d131061c185f5a1ffd1cfd7378275
humanhash: lake-victor-six-leopard
File name:7f9d131061c185f5a1ffd1cfd7378275.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:556'544 bytes
First seen:2022-04-06 16:35:01 UTC
Last seen:2022-04-06 17:48:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'467 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:IacmDoCz3kEizCR09e8JrOG855liFK6CbnzlZN17tPp7kUJF:Bz0fCRoe8Jr8vD6CbnzlZNLpIUJ
Threatray 15'731 similar samples on MalwareBazaar
TLSH T1C4C41205A63BDD15C96E9AB3E0D7590403759A07F066EB4F2FCC129E6B123EA0E05BD3
File icon (PE):PE icon
dhash icon f8e4f239d9b8f8e0 (21 x SnakeKeylogger, 20 x AgentTesla, 11 x Formbook)
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
252
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/261454/
Detection(s):
SecuriteInfo.com.MachineLearning.Anomalous.96.1765.14397.UNOFFICIAL
Create hunting rule

Win.Dropper.LokiBot-9943279-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed
Link:
https://www.filescan.io/uploads/624dc142aa7e43c6a6c367f6/reports/32844329-2aa9-429c-9c40-814634a3a998/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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/5d7e47da-7d91-49c7-a6bf-5e3c42bf2fae
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/971686
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 604174 Sample: vsA7r5G1ku.exe Startdate: 06/04/2022 Architecture: WINDOWS Score: 100 31 us2.smtp.mailhostbox.com 2->31 33 Found malware configuration 2->33 35 Malicious sample detected (through community Yara rule) 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 9 other signatures 2->39 8 vsA7r5G1ku.exe 7 2->8         started        signatures3 process4 file5 23 C:\Users\user\AppData\Roaming\IOlOIvJx.exe, PE32 8->23 dropped 25 C:\Users\...\IOlOIvJx.exe:Zone.Identifier, ASCII 8->25 dropped 27 C:\Users\user\AppData\Local\...\tmp79E0.tmp, XML 8->27 dropped 29 C:\Users\user\AppData\...\vsA7r5G1ku.exe.log, ASCII 8->29 dropped 41 Uses schtasks.exe or at.exe to add and modify task schedules 8->41 43 Writes to foreign memory regions 8->43 45 Adds a directory exclusion to Windows Defender 8->45 47 Injects a PE file into a foreign processes 8->47 12 RegSvcs.exe 2 8->12         started        15 powershell.exe 25 8->15         started        17 schtasks.exe 1 8->17         started        signatures6 process7 signatures8 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->49 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->51 53 Tries to steal Mail credentials (via file / registry access) 12->53 55 2 other signatures 12->55 19 conhost.exe 15->19         started        21 conhost.exe 17->21         started        process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/fb37efb44fe9befa68076e623e3f2ba4d1f4f13c65892ce04227be3857b77f04/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-04-06 16:35:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
453222ff6b7ba97875ec5dc0a8b5de85e71872781dd356a633d7886482fab2a7
AgentTesla
46c0ed738eeb540fdb6f9a64a0165a705f11f3aa871f4586321301afb8750104
AgentTesla
6ddb6545ff01fd66de1ce528854418db155470ed176f60e0b459b0effbc49c94
AgentTesla
73bd25981fdb509b34399c4c661c80eb85ae5b47ccccec8a53dfca8a0173ab7d
AgentTesla
7817d24ac9fa9ebe89664fd87eaf065f6e71a977bfe14154924c98a596ae6e74
AgentTesla
8dc1044646c1e025e3eef519e97b78d70996e78939366f50fd0f5799e5c47524
AgentTesla
e1b6a5300f2013d07c49dafeb1a78e73ef0b489f8a9276cee205a612a696eb8e
AgentTesla
+ 15'721 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/220406-t3qbrafcg2/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Checks computer location settings
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
a8d831d73df8f62d4e6e647be540b687479e80dfe68c79d38de19fce6b1d9b3e
MD5 hash:
03d0fc13818a5dfba7ee5faef664926c
SHA1 hash:
903b1e66a4f4a2f6657f874befbf643b47a163ba
Link:
https://www.unpac.me/results/a2507757-1ce0-4479-bc3a-be23a38fa6bc/
SH256 hash:
fe58122a2dc9f6b7c57eb945796affbcaa214b940cc31ea78bb3a93ec99b78bd
MD5 hash:
d4be86e94d2483566e3b788be1cf4658
SHA1 hash:
9e859c78492536bbcb13ce9a1efdebf5b73a6316
Link:
https://www.unpac.me/results/a2507757-1ce0-4479-bc3a-be23a38fa6bc/
SH256 hash:
61336ee05fb4da45bd12bfd487ea54aa0ed8bc8f46c3c5dabcdd08e73b7f0b38
MD5 hash:
3c9c309d7c25eee5dba5d5141bfb61e7
SHA1 hash:
c87418ac333d9d9ee18bf4e177c0bed9f56bddba
Link:
https://www.unpac.me/results/a2507757-1ce0-4479-bc3a-be23a38fa6bc/
SH256 hash:
7a9822795590d6f7081589e1d95d608193c2f33a8b9102b16c6d5849f784824d
MD5 hash:
3a106ea78c7a35015f626c79d47006ff
SHA1 hash:
e0dfc13318c65ba874722976656b1d6242740742
Link:
https://www.unpac.me/results/a2507757-1ce0-4479-bc3a-be23a38fa6bc/
SH256 hash:
fb37efb44fe9befa68076e623e3f2ba4d1f4f13c65892ce04227be3857b77f04
MD5 hash:
7f9d131061c185f5a1ffd1cfd7378275
SHA1 hash:
4b09c6fb034a8643ab80a32a11aec2bbfc60ec69
Link:
https://www.unpac.me/results/a2507757-1ce0-4479-bc3a-be23a38fa6bc/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/fb37efb44fe9/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:pe_imphash
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

AgentTesla

Executable exe fb37efb44fe9befa68076e623e3f2ba4d1f4f13c65892ce04227be3857b77f04

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2134294/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/261454/

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