MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c7cf8db43e28e6c2c6f3512f5f445ed648f1bdf2a067db4f29e7713f83dd4238. 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: c7cf8db43e28e6c2c6f3512f5f445ed648f1bdf2a067db4f29e7713f83dd4238
SHA3-384 hash: 7a4d7e6832405186a9c56c252a001e9d1bcb0043740c13917f37a5ba8ec8bc858b3064d47a2b08ae62db3dd5c8966dff
SHA1 hash: 3b8633ee8824bd088c79452890440101d396552a
MD5 hash: 1ca19bcb37ae4f847ac432d8f4166c71
humanhash: alaska-table-orange-one
File name:sZgSrk0ddM2UKGg.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:901'632 bytes
First seen:2020-08-04 13:29:45 UTC
Last seen:2020-08-04 15:22:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:kJn+XHcPgYxmOE+2Do4pPeRH89fc2zdHM1zWxhAS9u2lxdNGjJ85iLDVj1:kJntIYxPeVZlnZM1Cxb9umdnCV
Threatray 10'599 similar samples on MalwareBazaar
TLSH 0615AFC5F1409D50D82A4E3B4C3389924B33AC6BEF42D607349CB6596BF76C66A61F83
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: debbieltd.pw
Sending IP: 104.168.143.233
From: IMPORT-EXPORT SALES <info@debbieltd.pw>
Subject: Purchase Order No. 030620/D21-16 “ABB”
Attachment: Documents.RAR (contains "sZgSrk0ddM2UKGg.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
78
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/38723/
Detection(s):
SecuriteInfo.com.CIL.HeapOverride.Heur.3982.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
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
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/409488
Signature
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
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: MSBuild connects to smtp port
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 signatures2 2 Behavior Graph ID: 257028 Sample: sZgSrk0ddM2UKGg.exe Startdate: 04/08/2020 Architecture: WINDOWS Score: 100 30 Found malware configuration 2->30 32 Sigma detected: Scheduled temp file as task from temp location 2->32 34 Yara detected AgentTesla 2->34 36 6 other signatures 2->36 7 sZgSrk0ddM2UKGg.exe 5 2->7         started        process3 file4 20 C:\Users\user\AppData\...\inftwmciamUpN.exe, PE32 7->20 dropped 22 C:\...\inftwmciamUpN.exe:Zone.Identifier, ASCII 7->22 dropped 24 C:\Users\user\AppData\Local\...\tmp76B4.tmp, XML 7->24 dropped 26 C:\Users\user\...\sZgSrk0ddM2UKGg.exe.log, ASCII 7->26 dropped 10 MSBuild.exe 2 7->10         started        14 MSBuild.exe 7->14         started        16 schtasks.exe 1 7->16         started        process5 dnsIp6 28 mail.pkstyles.pk 108.167.183.84, 49725, 587 UNIFIEDLAYER-AS-1US United States 10->28 38 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->38 40 Tries to steal Mail credentials (via file access) 10->40 42 Tries to harvest and steal ftp login credentials 10->42 44 Tries to harvest and steal browser information (history, passwords, etc) 10->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 14->46 48 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 14->48 18 conhost.exe 16->18         started        signatures7 process8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c7cf8db43e28e6c2c6f3512f5f445ed648f1bdf2a067db4f29e7713f83dd4238/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 13:31:06 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y7hy3nb6fdtmfrxtkexv6rc62zepdppsubt5wtzj45yt7a65ii4a._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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fc93e1dd000a589799d43e1f3ad70aa716a67f1be15512a6eaf6f0490828114a
AgentTesla
+ 10'589 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla
Link:
https://tria.ge/reports/200804-5f1pzzbtsn/
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetThreadContext
Reads data files stored by FTP clients
Reads user/profile data of web browsers
Reads user/profile data of local email clients
AgentTesla Payload
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/c7cf8db43e28e6c2c6f3512f5f445ed648f1bdf2a067db4f29e7713f83dd4238

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

rar 4f4d66b5eb51903521695bcda30bc23975a60a0f4482bbc6eef7e0798260a0b0

AgentTesla

Executable exe c7cf8db43e28e6c2c6f3512f5f445ed648f1bdf2a067db4f29e7713f83dd4238

(this sample)

  
Dropped by
MD5 0abdc4ea3b998d71e0568d5955b77a7a
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 4f4d66b5eb51903521695bcda30bc23975a60a0f4482bbc6eef7e0798260a0b0
Cape
Cape
https://www.capesandbox.com/analysis/38723/

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