MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8d6bb6bd781ada88943e09cd8f1ebf4f68fd17732aa1edadacc83b50ea21a07. 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 5 File information Comments
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SHA256 hash: b8d6bb6bd781ada88943e09cd8f1ebf4f68fd17732aa1edadacc83b50ea21a07
SHA3-384 hash: e00d43246b6d777476bc3d19116eca6511a36dafbb28e0394dd3c4c06834e0afdadf05bde32a2a4b1f63670f121b869e
SHA1 hash: b2434309bd114198d81af91dcabad1bb91056e9d
MD5 hash: 0306d8f49af102e4a5311359b2ddd72d
humanhash: victor-magnesium-march-monkey
File name:revised invoice.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:492'544 bytes
First seen:2021-05-26 15:59:23 UTC
Last seen:2021-06-02 20:55:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:UBJ1nz3b7qHj4HD+9TOCmc7mJPF9gViV:+1nz3XqHjWDsKCmsu99gViV
Threatray 6 similar samples on MalwareBazaar
TLSH 4DA4DFAC23A4A930C5EE5EFD573053D84678E932641CDE0BECC166B9883DB554F36A23
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
109
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
revised invoice.exe
Verdict:
Malicious activity
Analysis date:
2021-05-26 16:10:53 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/770c7360-8113-47c3-b9b6-d96fd1277768

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/162443/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.12615.27593.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
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
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
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
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792696
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Executable has a suspicious name (potential lure to open the executable)
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
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)
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: 425092 Sample: revised invoice.exe Startdate: 26/05/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Multi AV Scanner detection for dropped file 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 11 other signatures 2->51 7 revised invoice.exe 6 2->7         started        11 kprUEGC.exe 5 2->11         started        13 kprUEGC.exe 2 2->13         started        process3 file4 29 C:\Users\user\AppData\...\CouHgPcDtF.exe, PE32 7->29 dropped 31 C:\Users\user\AppData\Local\...\tmp9FD2.tmp, XML 7->31 dropped 33 C:\Users\user\...\revised invoice.exe.log, ASCII 7->33 dropped 53 Injects a PE file into a foreign processes 7->53 15 revised invoice.exe 2 5 7->15         started        19 schtasks.exe 1 7->19         started        55 Multi AV Scanner detection for dropped file 11->55 21 schtasks.exe 1 11->21         started        23 kprUEGC.exe 2 11->23         started        signatures5 process6 file7 35 C:\Users\user\AppData\Roaming\...\kprUEGC.exe, PE32 15->35 dropped 37 C:\Windows\System32\drivers\etc\hosts, ASCII 15->37 dropped 39 C:\Users\user\...\kprUEGC.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 21->27         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b8d6bb6bd781ada88943e09cd8f1ebf4f68fd17732aa1edadacc83b50ea21a07/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-05-26 03:01:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
21 of 29 (72.41%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=xdllw26xqgw2rckd4conr4pl6t3i7ulxgkvb5ww2zsb3kdvcdidq._file
Verdict:
unknown
Similar samples:
11235b505d5fb1756bf5ef0f20874e24d0efd955a8fbe855fd46487757236152
AgentTesla
77eacae1a82febc29d17db391e272a92f94be83374a8e98f5447da680c011a0a
AgentTesla
b736f06a6b82ce1a53ccf2f50cf4d73c24c00750778bebe152dcf3c1956671f9
AgentTesla
c29708c56d408735531c542273d01dd60a33a6355b62baae10118ac172ea9cad
AgentTesla
cf2c412bab676e1a08e97f155470a4722a20350f3bd7a4a636a31e24dac6324a
AgentTesla
e86f16b721dd16f293e9a5b160c05e01ea7c539b34d54dff55f4397c529cbabd
AgentTesla
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/210526-pf3swjaz1x/
Behaviour
Creates scheduled task(s)
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
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Drops file in Drivers directory
AgentTesla Payload
AgentTesla
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/b8d6bb6bd781ada88943e09cd8f1ebf4f68fd17732aa1edadacc83b50ea21a07

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: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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/162443/

Comments