MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c
SHA3-384 hash: ee6c0252a83a8fe74209727cab195abe589509ab7cad7843449d7abb16a1cfee36c2f006b8eb68914baac48bac1d3724
SHA1 hash: 87d2d37b43bec19c78a76cdfac705e9195f5757b
MD5 hash: fecad52794d500919b2feff730eb6d26
humanhash: uranus-four-sixteen-earth
File name:invoice.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'201'664 bytes
First seen:2021-08-26 22:51:57 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 12288:f1bK4HtLGEUBXeu0BU5SisIid0kph+QrA2r79gEflEGD/XnyP112PdsfLosmoyJu:fPuqHIqw8td/DSS5D
Threatray 9'020 similar samples on MalwareBazaar
TLSH T1AB45DA3DBD252633E7BA86F8C4860D4EE69414CB22734DDF42D2A7892147617B6FA31C
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
374
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-08-26 22:54:05 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/900af6e3-4563-4cea-90b8-6ee09c8d8ab6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/182775/
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
Enabling autorun by creating a file
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4d31d6c8-2568-461e-9a19-4e60b8d1f285
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/840120
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Found malware configuration
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
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 schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 472550 Sample: invoice.pdf.exe Startdate: 27/08/2021 Architecture: WINDOWS Score: 100 29 Found malware configuration 2->29 31 Multi AV Scanner detection for dropped file 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 9 other signatures 2->35 7 invoice.pdf.exe 6 2->7         started        process3 file4 19 C:\Users\user\AppData\Roaming\UVjmWQ.exe, PE32 7->19 dropped 21 C:\Users\user\AppData\Local\...\tmpCAF2.tmp, XML 7->21 dropped 23 C:\Users\user\AppData\...\invoice.pdf.exe.log, ASCII 7->23 dropped 37 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->37 39 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->39 41 Uses schtasks.exe or at.exe to add and modify task schedules 7->41 43 Injects a PE file into a foreign processes 7->43 11 invoice.pdf.exe 2 7->11         started        15 schtasks.exe 1 7->15         started        signatures5 process6 dnsIp7 25 cwtgroup.co.za 173.212.193.63, 49721, 587 CONTABODE Germany 11->25 27 mail.cwtgroup.co.za 11->27 45 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->45 47 Tries to steal Mail credentials (via file access) 11->47 49 Tries to harvest and steal ftp login credentials 11->49 51 2 other signatures 11->51 17 conhost.exe 15->17         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-26 18:42:24 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jnnvfaboj43h2wrzitw4nu7npyimn2h2kbbz3azbfkum3x5jamwa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
14db3f82df6b962247e632da97767bb052805916a4936000ee500ae87479c7d8
AgentTesla
2f25825c264a731f59bdee108cdd8fdf062501404952294c7fdbd4e46d4ccc7e
AgentTesla
33a72fddfb31f23f71b11ac223b87c62e1dcc371c6f238804220e0d969f09504
AgentTesla
572f4fd77cd3857dea37a6fcd49e4ff65ed30bd960c341988ca81fd2338ca754
AgentTesla
8ec9f97acd0d3501af739cf4bc78d18f699ab364565f283020c29aea7e899aa9
AgentTesla
902bd3ddbbc9c8b39ae204d20e7e957ccd6dfa8e7a69537fe8191cf3d4785797
AgentTesla
d6113f618f2e03670b23f5c3356625f7543d546ceed4af59cb5e609a8b815e7f
AgentTesla
d8ec2bb84895a71e5993448c80edf5a544ac3559ff7e9076b7873baa38fc372b
AgentTesla
efa3b6173c92f365051817f1b15924769b10c443e3f1ee2de18d5a4a939d816f
AgentTesla
ff7642a7e4e379d2201d75742c1177bf6851e3b819f17a631e5f6a49d1faa3ea
AgentTesla
+ 9'010 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210826-yhxgqzlmk2/
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
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
be42b23ce2f8b27e442582ff983043b08752a2ddd1d42add221ab5ac1ef70970
MD5 hash:
8a3c4c0b3aed6cd78e2bad3e46dd127c
SHA1 hash:
79ed198c89d49c11bac38173a7727d6afe004542
Link:
https://www.unpac.me/results/5b03fad0-67c6-4c96-957b-18fb7666b3a1/
SH256 hash:
d7de26fcfc4602e4d6ebb14e0149f0110aabcbaaf08fc11bbd6001cb5835a26d
MD5 hash:
5d6812627197666c8687e05a8aab5379
SHA1 hash:
74acbff789c8bc0ce6bce2bd1e6d5e44ba6e6587
Link:
https://www.unpac.me/results/5b03fad0-67c6-4c96-957b-18fb7666b3a1/
SH256 hash:
28f26ce9685d2e8f70da5af74ddd71f6bd33bf3fd092e44c5f2e17e40065e067
MD5 hash:
38d95aa049504773e213a3cb161f5f7a
SHA1 hash:
040ac226acfae32dba21091f494d9e43fd1a3649
Link:
https://www.unpac.me/results/5b03fad0-67c6-4c96-957b-18fb7666b3a1/
SH256 hash:
4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c
MD5 hash:
fecad52794d500919b2feff730eb6d26
SHA1 hash:
87d2d37b43bec19c78a76cdfac705e9195f5757b
Link:
https://www.unpac.me/results/5b03fad0-67c6-4c96-957b-18fb7666b3a1/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4b5b52802e4f/report/overview.html
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/4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c

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: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 4b5b52802e4f367d5a3944edc6d3ed7e10c6e8fa50439d83212aa8cddfa9032c

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/182775/

Comments