MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7
SHA3-384 hash: 12f8e3c5284cdf5794a5ad362c35557c1587f091374c41f3743ca87b0380d96894c4fd08296ff3a1945077496bc44abb
SHA1 hash: ba7f56f9fdcc21c17f9282ef5b22e96f1e6f0501
MD5 hash: 99a42470f152615b8a98edc0d7c1da3a
humanhash: utah-stream-uncle-california
File name:99a42470f152615b8a98edc0d7c1da3a
Download: download sample
Signature AgentTesla
Create hunting rule
File size:557'056 bytes
First seen:2021-12-09 14:56:24 UTC
Last seen:2021-12-09 16:42:02 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:lpYcrq3cPNCYmVbS5EkzKdHC+nJIBf2fiPH:lpYcrbAYmN8EkyHZnJ0efkH
Threatray 13'394 similar samples on MalwareBazaar
TLSH T1E4C423143368C7E5C37E5A3185A46A055BBC7B813510D31C3AE8A0AD4ED7BCAB71C6EB
Reporter zbetcheckin
Tags:32 AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
154
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
99a42470f152615b8a98edc0d7c1da3a
Verdict:
Malicious activity
Analysis date:
2021-12-09 15:08:19 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b10f4992-6733-4a5b-a563-22fb1c16f0a7

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/212910/
Detection(s):
SecuriteInfo.com.Trojan.Inject4.21003.682.2027.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
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:
obfuscated packed
Link:
https://www.filescan.io/uploads/61b219404d8e6f3a5e1bfee5/reports/a7843e91-1bee-4e17-ae5b-382f0dc02408/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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a579e065-cc49-47c1-9f84-33bb716cb69b
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/904768
Signature
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
Installs a global keyboard hook
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
Sigma detected: Suspicius Add 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 ftp login credentials
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
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 537244 Sample: 38s1l7LxaV Startdate: 09/12/2021 Architecture: WINDOWS Score: 100 33 Found malware configuration 2->33 35 Multi AV Scanner detection for dropped file 2->35 37 Multi AV Scanner detection for submitted file 2->37 39 6 other signatures 2->39 7 38s1l7LxaV.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\Roaming\zwpDpfu.exe, PE32 7->23 dropped 25 C:\Users\user\AppData\Local\...\tmp3EAE.tmp, XML 7->25 dropped 27 C:\Users\user\AppData\...\38s1l7LxaV.exe.log, ASCII 7->27 dropped 41 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->41 43 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->43 45 Uses schtasks.exe or at.exe to add and modify task schedules 7->45 47 Adds a directory exclusion to Windows Defender 7->47 11 38s1l7LxaV.exe 6 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 dnsIp7 29 us2.smtp.mailhostbox.com 208.91.199.223, 49823, 587 PUBLIC-DOMAIN-REGISTRYUS United States 11->29 31 208.91.199.224, 49830, 587 PUBLIC-DOMAIN-REGISTRYUS United States 11->31 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->49 51 Tries to steal Mail credentials (via file / registry access) 11->51 53 Tries to harvest and steal ftp login credentials 11->53 55 2 other signatures 11->55 19 conhost.exe 15->19         started        21 conhost.exe 17->21         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-30 03:35:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
02f9fa6001761cc3d1030e16bdcff5a67a18c5cefebb2e57f039507932b1926d
AgentTesla
a031918e001745c0f07d5d0ac118a0bfeb946236033e20fa1b16e0d54ee7bcb8
AgentTesla
a0ad6da904e9df35d720ac9be7aed2ce5bada95b0c956a6f17cac30394ff28a3
AgentTesla
d0141cb822a5c465815c321d602be031b3fa4629ca5723ef77b9955020dd8f3d
AgentTesla
e9f6d4f2c6e8cc971f710c82043c013ad3c9a08f7bbdabea00a694ef37eace04
AgentTesla
f9512435de8ae0513d6e4390f4faaa37f2005ab1fd050b19da6dd2d1506b9390
AgentTesla
+ 13'384 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/211209-sbk3aadfbm/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
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:
b19104b568ca3ddccc2a8d3d10ecddb1ea240171e798dc3a486292cfa14b6365
MD5 hash:
7b0900da932f4ed9630d65b04422736d
SHA1 hash:
6fa340436e3a8e73ae2b3e911f861483183c68ef
Link:
https://www.unpac.me/results/7f4f3ee0-04a5-4161-8800-dfa9ead7cff3/
SH256 hash:
f58727494e51a8a1babc731747e520c536d1fc2ac9a47699af86e334ae80d66d
MD5 hash:
9c8bd650c4d3b2a67d92afe372238285
SHA1 hash:
1e42cad5cb7f61865dc8e601888a963cf66c414f
Link:
https://www.unpac.me/results/7f4f3ee0-04a5-4161-8800-dfa9ead7cff3/
SH256 hash:
10d59291362d04c91ff4e640537791bb86a25be49ec75d91e7a8a334ce6ad242
MD5 hash:
f7e82fbb9f80778982b9795d0d07d97c
SHA1 hash:
1676b76dbfb71a0207d1084f3c8f07f475601a00
Link:
https://www.unpac.me/results/7f4f3ee0-04a5-4161-8800-dfa9ead7cff3/
SH256 hash:
3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7
MD5 hash:
99a42470f152615b8a98edc0d7c1da3a
SHA1 hash:
ba7f56f9fdcc21c17f9282ef5b22e96f1e6f0501
Link:
https://www.unpac.me/results/7f4f3ee0-04a5-4161-8800-dfa9ead7cff3/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3b8103d9e6d6/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/3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7

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
Create hunting rule
Rule name:pe_imphash
Create hunting rule
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 3b8103d9e6d6cb728edd9b55c9b9f2ca51099bc107c197b6c4dca1956743a1b7

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1869162/
Cape
Cape
https://www.capesandbox.com/analysis/212910/

Comments


Avatar
zbet commented on 2021-12-09 14:56:25 UTC

url : hxxp://173.232.204.89/rkw.exe