MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8798f7eff5706576e632ad4623f1424da7c1d90794a42768920ae96f4a5ac8fa. 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: 9


Intelligence 9 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8798f7eff5706576e632ad4623f1424da7c1d90794a42768920ae96f4a5ac8fa
SHA3-384 hash: a46f05b64bdc0d839c8c7381cf3188ac03f468254d385aaaac713b90d3d1fd6b6116846421b3321c01522f96a837193b
SHA1 hash: dd501b2db601245f97be7064afbefee2b24c7c06
MD5 hash: b2082ec3cb7a2f3998e68f9ea96ea179
humanhash: monkey-twelve-sink-eighteen
File name:PURCHASE ORDER....exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:857'600 bytes
First seen:2020-07-29 11:22:36 UTC
Last seen:2020-07-29 12:22:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:N5RlMiK+nM6xvG1iOGZil5zIXk53qskXaUZnCClZWX3lrw390pD7GLT/ta2MUe14:BIk979YAg36CX3u2pDSLrta2M5q
Threatray 10'538 similar samples on MalwareBazaar
TLSH 4705E0ACE697F516D9BD0130BAD84109CBFC9C959177936E788CB37B0AF63A344061B2
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: hugebamboo.net
Sending IP: 103.99.1.143
From: PHUNG-KD <kdc01@hugebamboo.net>
Subject: FW: [BULK] IDFL20-312820-821 Samples Received Confirmation
Attachment: PURCHASE ORDER....zip (contains "PURCHASE ORDER....exe")

AgentTesla SMTP exfil server:
mail.mystboutiquehotel.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/34823/
Detection(s):
SecuriteInfo.com.Generic.mg.b2082ec3cb7a2f39.15354.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Creating a file
Using the Windows Management Instrumentation requests
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/402421
Signature
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Modifies the hosts 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: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 253577 Sample: PURCHASE ORDER....exe Startdate: 29/07/2020 Architecture: WINDOWS Score: 100 45 g.msn.com 2->45 47 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->47 57 Found malware configuration 2->57 59 Sigma detected: Scheduled temp file as task from temp location 2->59 61 Yara detected AgentTesla 2->61 63 5 other signatures 2->63 9 PURCHASE ORDER....exe 5 2->9         started        12 goICPG.exe 2 2->12         started        14 goICPG.exe 1 2->14         started        signatures3 process4 file5 37 C:\Users\user\AppData\Local\...\tmpCC40.tmp, XML 9->37 dropped 39 C:\Users\user\AppData\...\&startupname&.exe, PE32 9->39 dropped 16 RegSvcs.exe 2 4 9->16         started        21 schtasks.exe 1 9->21         started        23 conhost.exe 12->23         started        25 conhost.exe 14->25         started        process6 dnsIp7 41 mail.mystboutiquehotel.com 95.154.242.134, 49734, 587 IOMART-ASGB United Kingdom 16->41 43 192.168.2.1 unknown unknown 16->43 33 C:\Users\user\AppData\Roaming\...\goICPG.exe, PE32 16->33 dropped 35 C:\Windows\System32\drivers\etc\hosts, ASCII 16->35 dropped 49 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->49 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->51 53 Tries to steal Mail credentials (via file access) 16->53 55 5 other signatures 16->55 27 reg.exe 1 16->27         started        29 conhost.exe 21->29         started        file8 signatures9 process10 process11 31 conhost.exe 27->31         started       
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8798f7eff5706576e632ad4623f1424da7c1d90794a42768920ae96f4a5ac8fa/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-29 11:24:07 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q6mpp37vobsxnzrsvvdch4kcjwt4dwihsssco2esbluw6ss2zd5a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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8de5b231add82c95e720fb340206a50034e9ac1de1108977389538f37a5be45b
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92937f7868601189fc7a3c51f7de21a1a16d92d2ec823cc6faf69cebc8939376
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aabe14b147b240cb1c6bb3f2b55c5abe8126e5507c6b346a07dd426ca1da6fb1
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d1b05a16a7f955432a7866f46ac2e32ed6ba21431e190d15fa46121f8ed2d46e
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e509b23e338968bd1f1242df28436bf1c954d91b2410654d55d3812078eda6f8
AgentTesla
+ 10'528 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
persistence spyware keylogger trojan stealer family:agenttesla
Link:
https://tria.ge/reports/200729-c2kqbmlmge/
Behaviour
Modifies registry key
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Creates scheduled task(s)
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Drops file in Drivers directory
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/8798f7eff5706576e632ad4623f1424da7c1d90794a42768920ae96f4a5ac8fa

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:CAP_HookExKeylogger
Create hunting rule
Author:Brian C. Bell -- @biebsmalwareguy
Reference:https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar
Rule name:win_agent_tesla_w1
Create hunting rule
Author:govcert_ch
Description:Detect Agent Tesla based on common .NET code sequences

File information

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

Malspam

AgentTesla

zip 30444572c314e5cbc28dafe7ab88e9f5b25e702911fc42b5bbff52f3ed086f2c

AgentTesla

Executable exe 8798f7eff5706576e632ad4623f1424da7c1d90794a42768920ae96f4a5ac8fa

(this sample)

  
Dropped by
MD5 ef24bd68b498f3161bc181305c05e024
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/34823/
  
Dropped by
SHA256 30444572c314e5cbc28dafe7ab88e9f5b25e702911fc42b5bbff52f3ed086f2c

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