MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2
SHA3-384 hash: 567d3b7ced0f744e71a7134caa72b65f3d089b4b726a91da4620dce34b0f081a7bca010261c7085160403d19b16a33f3
SHA1 hash: 924bdc22138cf9ba138aaf82d1b17dd4c0da47c8
MD5 hash: 63867d3eed76e900ecda83188776690b
humanhash: artist-three-skylark-ink
File name:doc2019291888001990.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:37'888 bytes
First seen:2022-06-07 07:05:15 UTC
Last seen:2022-06-07 07:52:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 768:0PB1gMr10g0zMdUv8G7iM3kABG1neWFqfCSZUbtRUjRG:eGMr8MdUh7iM3kABGjyvZwt
Threatray 18'001 similar samples on MalwareBazaar
TLSH T1C803AF8ADE294976DD690B3010973EF08E7E7117B8526DBFCC4430510872A96B97BF39
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 4b1b0766ca647939 (2 x AsyncRAT, 1 x AgentTesla, 1 x SnakeKeylogger)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
4
# of downloads :
280
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
doc2019291888001990.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2022-06-07 22:28:48 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/999146db-7871-4fae-a59b-9508e162a097

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/277242/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Running batch commands
Creating a process with a hidden window
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed update.exe
Link:
https://www.filescan.io/uploads/629ef8df5dc88d357167ac3a/reports/d73b36a0-ef79-43c4-a71b-42574128b587/overview
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8b935a7c-1c03-478b-b3ff-b54469b42ac1
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1007877
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
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 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)
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 / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 640372 Sample: doc2019291888001990.pdf.exe Startdate: 07/06/2022 Architecture: WINDOWS Score: 100 57 api.telegram.org 2->57 73 Malicious sample detected (through community Yara rule) 2->73 75 Multi AV Scanner detection for submitted file 2->75 77 Yara detected AgentTesla 2->77 79 11 other signatures 2->79 8 doc2019291888001990.pdf.exe 16 7 2->8         started        13 Jwuoajwl.exe 14 4 2->13         started        15 Jwuoajwl.exe 3 2->15         started        signatures3 process4 dnsIp5 59 cdn.discordapp.com 162.159.133.233, 443, 49735 CLOUDFLARENETUS United States 8->59 49 C:\Users\user\AppData\...\Jwuoajwl.exe, PE32 8->49 dropped 51 C:\Users\...\Jwuoajwl.exe:Zone.Identifier, ASCII 8->51 dropped 53 C:\Users\...\doc2019291888001990.pdf.exe.log, ASCII 8->53 dropped 81 Writes to foreign memory regions 8->81 83 Allocates memory in foreign processes 8->83 85 Injects a PE file into a foreign processes 8->85 17 InstallUtil.exe 14 6 8->17         started        21 cmd.exe 1 8->21         started        61 162.159.129.233, 443, 49770 CLOUDFLARENETUS United States 13->61 87 Multi AV Scanner detection for dropped file 13->87 89 Machine Learning detection for dropped file 13->89 23 cmd.exe 13->23         started        25 InstallUtil.exe 13->25         started        27 InstallUtil.exe 13->27         started        29 InstallUtil.exe 13->29         started        63 162.159.135.233, 443, 49771 CLOUDFLARENETUS United States 15->63 31 cmd.exe 15->31         started        33 InstallUtil.exe 15->33         started        35 InstallUtil.exe 15->35         started        file6 signatures7 process8 dnsIp9 55 api.telegram.org 149.154.167.220, 443, 49765, 49766 TELEGRAMRU United Kingdom 17->55 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->65 67 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->67 69 Tries to steal Mail credentials (via file / registry access) 17->69 71 3 other signatures 17->71 37 conhost.exe 21->37         started        39 timeout.exe 1 21->39         started        41 conhost.exe 23->41         started        43 timeout.exe 23->43         started        45 conhost.exe 31->45         started        47 timeout.exe 31->47         started        signatures10 process11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-06-07 01:05:23 UTC
AV detection:
10 of 41 (24.39%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=g25vxfjxdo4n3qcifdjfmgvylf5qrsfl7nq7tonh763gpnqpu7za._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
masslogger
Create hunting rule
Similar samples:
4a8e5d6a409a60db11f4fc5599d5ff0fb0b4fafcadddbb1281d74ee85ddd1068
AgentTesla
66aa3076bab656dc495c3a7cd2f8cfef86ffe2082d209fabe8c64905b8c76cb9
AgentTesla
8681f45ddda45b69514f5f06ba3bd4e1e3ca3275a02190e344d791d74fdb93d3
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b64081fc4a7dc5e73ab017b1f0453c27d5e6040134dd269bc01de45cad3713b7
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b789ea800e24253ead1c150643aa729e7b7d5253bf6319aa4321680c615b8ec2
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c39a8dafb70b4adfb21ca557c23f3b81fc965c204bb70d515f8903f3205b72b7
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efb9deb209a6439a40fefb58437182f07751f78ad987c601aa3004d809d53761
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f73f85572a1f8a3c1f4b779e787c3cb1aeee64f76d55bcc0245a02ab27feeba3
AgentTesla
+ 17'991 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/220607-hw3sqagacr/
Behaviour
Delays execution with timeout.exe
Modifies system certificate store
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
Adds Run key to start application
Checks computer location settings
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5481869940:AAE-xVZLVv66P23Lv7Y5LDB9j4A7AeRGyvE/sendDocument
Unpacked files
SH256 hash:
36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2
MD5 hash:
63867d3eed76e900ecda83188776690b
SHA1 hash:
924bdc22138cf9ba138aaf82d1b17dd4c0da47c8
Link:
https://www.unpac.me/results/819b9e5d-ebff-46e0-9fc6-d78291405f60/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/36bb5b95371b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2

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:INDICATOR_SUSPICIOUS_EXE_DiscordURL
Create hunting rule
Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
Create hunting rule
Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
Create hunting rule
Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

AgentTesla

Executable exe 36bb5b95371bb8ddc04828d2561ab8597b08c8abfb61f9b9a7ffb667b60fa7f2

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/277242/

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