MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233. 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: 13


Intelligence 13 IOCs YARA 8 File information Comments
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SHA256 hash: 3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233
SHA3-384 hash: babdc4220b82105248a4ee05f88a5716354df3b54b38006f0cd235f23e92730639895c9a0e5696816d11e8541b4c359b
SHA1 hash: fcd6682ed5d18e459253840890ec8413fd15a4dd
MD5 hash: b01f4c65f742243802d99c8eaecf594e
humanhash: oranges-minnesota-cold-island
File name:FAX629_xls.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:490'496 bytes
First seen:2021-09-13 02:24:01 UTC
Last seen:2021-09-13 02:27:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:wok4DbF53e0IUFLSFrFaddGWJIUUQAlMGcN0dyLJqK6j:9yrU7XJPNY5dyVqKE
Threatray 9'762 similar samples on MalwareBazaar
TLSH T1F6A4AD242DFE5029F173AFB99AE07596DAAFB7732A07E45D145003870B23F41DE8193A
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
FAX629_xls.exe
Verdict:
Suspicious activity
Analysis date:
2021-09-13 02:26:00 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4afca54f-6490-4a39-9a45-6cb7f60c6a73

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/187173/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Save.a.8321.31865.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6174f9629a5a1e91c5d1f66b/reports/2f19616e-6ed9-4523-83bb-b1daf167a63f/overview
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/7577e8dd-25f7-4277-80d1-3d97cfed511d
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/849442
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
.NET source code contains very large strings
Adds a directory exclusion to Windows Defender
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
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: Powershell Defender Exclusion
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 access)
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 481873 Sample: FAX629_xls.exe Startdate: 13/09/2021 Architecture: WINDOWS Score: 100 46 Found malware configuration 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 Yara detected AgentTesla 2->50 52 7 other signatures 2->52 7 FAX629_xls.exe 4 2->7         started        11 xepul.exe 4 2->11         started        13 xepul.exe 2->13         started        process3 file4 34 C:\Users\user\AppData\...\FAX629_xls.exe.log, ASCII 7->34 dropped 54 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->54 56 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->56 58 Adds a directory exclusion to Windows Defender 7->58 15 FAX629_xls.exe 2 5 7->15         started        20 powershell.exe 25 7->20         started        60 Multi AV Scanner detection for dropped file 11->60 62 Machine Learning detection for dropped file 11->62 64 Injects a PE file into a foreign processes 11->64 22 powershell.exe 11->22         started        24 xepul.exe 11->24         started        signatures5 process6 dnsIp7 36 mail.fclbd.com 192.185.76.91, 49818, 49819, 587 UNIFIEDLAYER-AS-1US United States 15->36 30 C:\Users\user\AppData\Roaming\...\xepul.exe, PE32 15->30 dropped 32 C:\Users\user\...\xepul.exe:Zone.Identifier, ASCII 15->32 dropped 38 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->38 40 Tries to steal Mail credentials (via file access) 15->40 42 Tries to harvest and steal ftp login credentials 15->42 44 2 other signatures 15->44 26 conhost.exe 20->26         started        28 conhost.exe 22->28         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-09-13 02:03:45 UTC
AV detection:
10 of 45 (22.22%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=h7ow7m7prxede6o3ozysmo2np2qp3clkh3v2x2krzkdl2pf2oizq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
014b3137818fe9c6b66f870dfb5a2d59ea9e78ef414cb28dae5142e9eeb1736c
AgentTesla
1a2b6238f4f28727686d60ab5dc696ba8b88672b123b8f18a8b05e7b6a4de4b0
AgentTesla
745d7e099bc7b27dc1a92b85cb557aa62404c27fc1e0f6f04d5ba3735004bb77
AgentTesla
9b49a9b7baa2dd6642fcc3c97976f6f1ddb0f8d6b4261ce4b32583c75a572e4e
AgentTesla
ddb27dedce37040816b06a70f6375dd10b5fc2f5dbc412ec42b8798fe4240ffa
AgentTesla
f04d5b287971f60d5f04b262f3714a790b7d7c9b591ab88faa1d1f5244792d09
AgentTesla
f0f4aecb098f92a033355c2058300583967a7fbf00c81ce2f3ba250b8ae3e277
AgentTesla
+ 9'752 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/210913-cvqh4sfgfr/
Behaviour
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
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
58d31fd23080b0fd66b4a543cf4f08fdcb8230c2049acc4b5a7c06bf887d380b
MD5 hash:
672eacce863a757ee4d44c8e4d8d8b4d
SHA1 hash:
ee799515aa7e99608812ff408114156823689af8
Link:
https://www.unpac.me/results/8467e2c5-5dfa-4a13-829b-05fa50f1869b/
SH256 hash:
91f5f4ea2eab8f11fdd10b3a301e0ddabda3d5446fd8ab9e4279c302f804d4ef
MD5 hash:
cf568e2109aac8770660bb988b5eb46f
SHA1 hash:
bbd946b4d3dc7dc60bad854ace7d49df356fdcc0
Link:
https://www.unpac.me/results/8467e2c5-5dfa-4a13-829b-05fa50f1869b/
SH256 hash:
405fca12683010e887efbe06b1f3025b6344013f461622729d78f68a45f21f5f
MD5 hash:
0329827ffdf54493de2e075ef5dd18db
SHA1 hash:
6fa6773030d20b9515b628cade7447c019315462
Link:
https://www.unpac.me/results/8467e2c5-5dfa-4a13-829b-05fa50f1869b/
SH256 hash:
3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233
MD5 hash:
b01f4c65f742243802d99c8eaecf594e
SHA1 hash:
fcd6682ed5d18e459253840890ec8413fd15a4dd
Link:
https://www.unpac.me/results/8467e2c5-5dfa-4a13-829b-05fa50f1869b/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3fdd6fb3ef8d/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/3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233

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
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Author:abuse.ch
Description:Detects AgentTesla PE
Rule name:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
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 3fdd6fb3ef8dc83279db7671263b4d7ea0fd896a3eebabe951ca86bd3cba7233

(this sample)

  
Dropped by
AgentTesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/187173/

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