MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 850541657f538f00222c3a538866386f9bdd3f3a40998dfe1c22445619ee2d4b. 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
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SHA256 hash: 850541657f538f00222c3a538866386f9bdd3f3a40998dfe1c22445619ee2d4b
SHA3-384 hash: 98bc46f5773557b2fb2f05f48cb966214706e47acf94df69421c27baae06df3f5618030997c47505699da22136ce8981
SHA1 hash: 76a5b731989a4dbb8390170394519c11946f14be
MD5 hash: 9c8dfd7c0dde2d32995903fbbd749dd6
humanhash: april-thirteen-utah-rugby
File name:dwininilogs.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:957'952 bytes
First seen:2020-08-03 18:10:30 UTC
Last seen:2020-08-03 22:28:34 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:/b6sSBftkdC8R4R8N6zQv5DDeX4WBO2fTJQY6i:TZST3YYwcDX4uJQ
Threatray 10'616 similar samples on MalwareBazaar
TLSH 8F158B6836AF0915F7591A398C3245039BF1EF4B58E6AF4F22E175AD04F7BA49840F32
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Gathering data
Detection(s):
SecuriteInfo.com.Trojan.Inject3.46680.21962.18610.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/408362
Signature
Contains functionality to register a low level keyboard hook
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Moves itself to temp directory
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)
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 steal Mail credentials (via file access)
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 256416 Sample: dwininilogs.exe Startdate: 03/08/2020 Architecture: WINDOWS Score: 100 30 Yara detected AgentTesla 2->30 32 Yara detected AntiVM_3 2->32 34 Machine Learning detection for sample 2->34 36 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 2->36 6 dwininilogs.exe 3 2->6         started        10 nVTlJn.exe 3 2->10         started        12 nVTlJn.exe 2 2->12         started        process3 file4 24 C:\Users\user\AppData\...\dwininilogs.exe.log, ASCII 6->24 dropped 38 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->38 40 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->40 42 Contains functionality to register a low level keyboard hook 6->42 14 dwininilogs.exe 2 5 6->14         started        44 Machine Learning detection for dropped file 10->44 46 Injects a PE file into a foreign processes 10->46 18 nVTlJn.exe 2 10->18         started        20 nVTlJn.exe 10->20         started        22 nVTlJn.exe 2 12->22         started        signatures5 process6 file7 26 C:\Users\user\AppData\Roaming\...\nVTlJn.exe, PE32 14->26 dropped 28 C:\Users\user\...\nVTlJn.exe:Zone.Identifier, ASCII 14->28 dropped 48 Moves itself to temp directory 14->48 50 Tries to steal Mail credentials (via file access) 14->50 52 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->52 54 Tries to harvest and steal browser information (history, passwords, etc) 18->54 56 Installs a global keyboard hook 18->56 signatures8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/850541657f538f00222c3a538866386f9bdd3f3a40998dfe1c22445619ee2d4b/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-03 18:09:57 UTC
File Type:
PE (.Net Exe)
Extracted files:
15
AV detection:
33 of 48 (68.75%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=qucuczl7kohqairmhjjyqzryn6n52pz2icmy37q4ejcfmgpofvfq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0e2359712d56cd2288252596dcb2b77f444c2aeb53b3a88846058aa327f8f4cb
AgentTesla
2f42e1baa78e2d7160734d4a9a849cff5f95cc2f7dfa161aa9c62429a0058dbe
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53a05748df93fa8c44d170d47a1abd61ec9ec27980867c7cb87d3d9841f70ccf
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756fde810887452ab2533283973f2e582df198988bcafde9f20dc85e35f4d5c4
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8058646126cba81bea297815cbe34b709b852b5c2b134114c67a7e7c8939045d
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a540201f44f378a2bcade1e6190cd5784ae7cc0bc0f1138436afeb7b10ef7050
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d1176c3c4ab396d3bad7dd15c881fdb4e38922e9f7e539dc1035768f366edcf9
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d6f534c9ada1be06a4a8e186506a6807f6f2c26b2d0b4c3178d95b7fd09817f4
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e0b95a4255056cbad985d2d8e2ef1ab22720b758af99bd8d15a5d2d81d650fff
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f155dd64a514c9ea5ffc36222d1c66c8daf6416945dbc8e8dd7a5b2cefae02d3
AgentTesla
+ 10'606 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer spyware trojan family:agenttesla persistence
Link:
https://tria.ge/reports/200803-e5k6rhv14a/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious behavior: RenamesItself
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla Payload
AgentTesla
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.75
Link:
https://yomi.yoroi.company/submissions/850541657f538f00222c3a538866386f9bdd3f3a40998dfe1c22445619ee2d4b

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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/38059/
  
URLhaus
https://urlhaus.abuse.ch/url/423906/

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