MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664
SHA3-384 hash: af64be5e28cc15a6d784d92d27ac904ba969e518057f45a5e74a6009ac7c7ff68acdff8f9d180470c6c41b709d31bfb9
SHA1 hash: f5473407b6c450c8bf7d9b2eb117f4ca03590e57
MD5 hash: c9aaa8eb7d6d3112a5621a7b9cccdb9f
humanhash: lactose-red-sad-equal
File name:c9aaa8eb7d6d3112a5621a7b9cccdb9f.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'216'000 bytes
First seen:2021-07-01 10:18:10 UTC
Last seen:2021-07-01 10:59:40 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:+DXLOIBghzh7kgqVLgu/n048e17foRhR:UKIBghzh7dqBgub8Q7fIh
Threatray 6'325 similar samples on MalwareBazaar
TLSH AF45D00FF605AA45C5A82138DCFFC27413B5ED9B7C12DB1A2E987ADD3C72652C8417A8
Reporter abuse_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SMK010620.doc
Verdict:
Malicious activity
Analysis date:
2021-07-01 09:45:45 UTC
Tags:
opendir exploit CVE-2017-11882 loader
Link:
https://app.any.run/tasks/89d0fcd3-7644-451b-aef9-843b8c4146b8

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/169115/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.868.24634.7618.UNOFFICIAL
Create hunting rule

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:
njRAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c3c0374b-f60f-4d2c-8d69-7d73d779213f
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/810470
Signature
.NET source code contains method to dynamically call methods (often used by packers)
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)
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 AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 442881 Sample: J1tANhkF8e.exe Startdate: 01/07/2021 Architecture: WINDOWS Score: 100 29 Found malware configuration 2->29 31 Multi AV Scanner detection for dropped file 2->31 33 Multi AV Scanner detection for submitted file 2->33 35 7 other signatures 2->35 7 J1tANhkF8e.exe 7 2->7         started        process3 file4 19 C:\Users\user\AppData\Roaming\fERTbEPUl.exe, PE32 7->19 dropped 21 C:\Users\...\fERTbEPUl.exe:Zone.Identifier, ASCII 7->21 dropped 23 C:\Users\user\AppData\Local\...\tmp1387.tmp, XML 7->23 dropped 25 C:\Users\user\AppData\...\J1tANhkF8e.exe.log, ASCII 7->25 dropped 37 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->37 39 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->39 41 Uses schtasks.exe or at.exe to add and modify task schedules 7->41 43 Injects a PE file into a foreign processes 7->43 11 J1tANhkF8e.exe 2 7->11         started        15 schtasks.exe 1 7->15         started        signatures5 process6 dnsIp7 27 mail.privateemail.com 198.54.122.60, 49738, 587 NAMECHEAP-NETUS United States 11->27 45 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 11->45 47 Tries to steal Mail credentials (via file access) 11->47 49 Tries to harvest and steal ftp login credentials 11->49 51 2 other signatures 11->51 17 conhost.exe 15->17         started        signatures8 process9
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-07-01 06:00:24 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0158b790a1604fc90e7c01c81f7851fb1a86f9e9d01de234b5134b763039707a
AgentTesla
07fe8feb4d84f4527446d94b06ac5e7a244d784e27186b1b9738514feae07be3
AgentTesla
701607597adc3999cb756b5e5205febaf4698ce20a3604e6ad79e49dfd060671
AgentTesla
73e4f32ad74da67b03c63b115f0937dbd8f63ba010bead2afcb92e9a15b17df6
AgentTesla
74c2f8176fadf84bb04083901d52033b0975245676b45cd8607d80bebc91e570
AgentTesla
98fb18db59cb89a6d332a223c7b2d547bad41cf3b06ed2eaa75f6894049b5358
AgentTesla
b045b7b993b005e1930ca50a9eb65df8b62ca29d1dfdbbb28ca6621384172908
AgentTesla
c21d2f1d2c5dad844ee2c789b2a424f0808e9eaf4edbf4319dca34531aacbe2c
AgentTesla
c9b11315a65d68d5577ca5b762e4d5d16f660b1ffde12cd5192c9717747a63ca
AgentTesla
cdaaf6b1093dd63f181ff64dc82990b43b02988bead33d733cce9e8fd08d8440
AgentTesla
+ 6'315 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/210701-dtvwklfgwj/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
1c5e0a0d909d1da24af87967a1e154c8aa490a1f99c6624e7214d20eb84f4fec
MD5 hash:
81faf15c7e3c9446d906659f7c7a9f16
SHA1 hash:
d7e05a22b109ce608109dc509029a7fe22b4b8bf
Link:
https://www.unpac.me/results/756e5519-fa04-43e3-ac81-4decce359f8e/
SH256 hash:
b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664
MD5 hash:
c9aaa8eb7d6d3112a5621a7b9cccdb9f
SHA1 hash:
f5473407b6c450c8bf7d9b2eb117f4ca03590e57
Link:
https://www.unpac.me/results/756e5519-fa04-43e3-ac81-4decce359f8e/
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/b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664

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: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 b1f257789748f730c5049aa47653680a1297a890c7ba86f8f914869b66249664

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1416020/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/169115/

Comments