MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130. 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 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130
SHA3-384 hash: cf876f97a4e262b2098d979ff14600eab5bdf19a18ea0d32b2bac575ac4962df218b48b66a15d9850a4be1900bf8ad8b
SHA1 hash: 9d8776323dd1973f0af6a5f795be07e3023d3e81
MD5 hash: a66b580065de67a09e1ee1091004e9df
humanhash: thirteen-cola-pip-mobile
File name:a66b580065de67a09e1ee1091004e9df
Download: download sample
Signature AgentTesla
Create hunting rule
File size:447'488 bytes
First seen:2021-11-27 21:32:17 UTC
Last seen:Never
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:o/ixBFmlFevxHp7ioBiGvIxHOOQkdmj4AEGo9llTGPdkhM8:o/i1uEuoBihg57EizdkhM8
Threatray 13'063 similar samples on MalwareBazaar
TLSH T151941208A3188F26EDADA7FD4466514207B450572283D78A5FCEE4D94BB17EA8B32CCD
Reporter zbetcheckin
Tags:32 AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
178
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a66b580065de67a09e1ee1091004e9df
Verdict:
Malicious activity
Analysis date:
2021-11-27 21:35:44 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c6c15b6e-2ea1-40e1-a936-14a47047a5af

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.MSIL.Packed.19.17196.9084.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
DNS request
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61a2a40ff36138de3f428326/reports/64999286-1f4a-4082-b584-4e17c9b23c56/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/b279a5a1-13ad-42a1-92c1-a5c5dd3ac985
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/897215
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Found malware configuration
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: 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: 529693 Sample: xiifZkOi7e Startdate: 27/11/2021 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 9 other signatures 2->39 7 xiifZkOi7e.exe 7 2->7         started        process3 file4 23 C:\Users\user\AppData\...\LWuOADKoAoSJk.exe, PE32 7->23 dropped 25 C:\...\LWuOADKoAoSJk.exe:Zone.Identifier, ASCII 7->25 dropped 27 C:\Users\user\AppData\Local\...\tmpCF53.tmp, XML 7->27 dropped 29 C:\Users\user\AppData\...\xiifZkOi7e.exe.log, ASCII 7->29 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 2 other signatures 7->47 11 xiifZkOi7e.exe 6 7->11         started        15 powershell.exe 25 7->15         started        17 schtasks.exe 1 7->17         started        signatures5 process6 dnsIp7 31 us2.smtp.mailhostbox.com 208.91.198.143, 49809, 49810, 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/81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-27 15:33:21 UTC
File Type:
PE (.Net Exe)
Extracted files:
11
AV detection:
18 of 28 (64.29%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
02f9fa6001761cc3d1030e16bdcff5a67a18c5cefebb2e57f039507932b1926d
AgentTesla
726efd10333dd1cbd4c65e94122f9e05e3d9ccf0ff1caed8ddb421f37689283c
AgentTesla
a031918e001745c0f07d5d0ac118a0bfeb946236033e20fa1b16e0d54ee7bcb8
AgentTesla
a0ad6da904e9df35d720ac9be7aed2ce5bada95b0c956a6f17cac30394ff28a3
AgentTesla
d0b39b5720a899595e293087868f48ad27f6615cc1f116f953d268a90161f779
AgentTesla
d30fdcf3c1e63aa03fad165cf11e1006bcc6c52330592fa11cd8d8a1eedc3646
AgentTesla
f9512435de8ae0513d6e4390f4faaa37f2005ab1fd050b19da6dd2d1506b9390
AgentTesla
+ 13'053 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/211127-1d62jagfe8/
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:
ddc00fce12f0b5b6c693eec74db0f34113f6f56922808797ca0eec846f0f8787
MD5 hash:
8c829a6194673f0ed47e5013d585837e
SHA1 hash:
a5b913e6d381a4835eee2eca41d088078430d235
Link:
https://www.unpac.me/results/59a641b5-f506-4a47-95dc-bcacff91fc61/
SH256 hash:
f6639a3b21a09ca5e9e43e10f8ac7f822956232806805252096f03f68bc9815c
MD5 hash:
aa334e922c53c5cba0b43c342ac13b14
SHA1 hash:
68109327b5e98174293bb348dfea6a088cbd5d2f
Link:
https://www.unpac.me/results/59a641b5-f506-4a47-95dc-bcacff91fc61/
SH256 hash:
d4ba5399ed9ced7effab3caa489a94e4168eee8f7e4455e9edccb320e3b19818
MD5 hash:
8294b4b40e733fc26f72553ceec22958
SHA1 hash:
257ded60cd984d0115fe8911ce8712e06b505c39
Link:
https://www.unpac.me/results/59a641b5-f506-4a47-95dc-bcacff91fc61/
SH256 hash:
81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130
MD5 hash:
a66b580065de67a09e1ee1091004e9df
SHA1 hash:
9d8776323dd1973f0af6a5f795be07e3023d3e81
Link:
https://www.unpac.me/results/59a641b5-f506-4a47-95dc-bcacff91fc61/
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/81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130

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 81b11c3463db6618788ee5883b39ca7bbadfad39bbbd5a02e0eb1e94d7e80130

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/1826412/

Comments


Avatar
zbet commented on 2021-11-27 21:32:18 UTC

url : hxxp://173.232.204.89/b2.exe