MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 66693c1ffcf35d165de90c9303977debf0cc419e94da378b8543517c4a86eb39. 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: 66693c1ffcf35d165de90c9303977debf0cc419e94da378b8543517c4a86eb39
SHA3-384 hash: 1929838d07766af39e188e7f8bdf075f8712749afd230e5a739aa5679648eaac45ca740b8eaf49944f34d7bd6c62703f
SHA1 hash: a4fcae53e64f34832c018d8b2b8544c29e1831f7
MD5 hash: e4a75f46fe71f74a812b2991eea4379c
humanhash: item-cold-bakerloo-william
File name:DOCUMENTS.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:560'640 bytes
First seen:2020-08-14 08:52:18 UTC
Last seen:2020-08-14 09:42:28 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:uDlqt3mV7D7G4wd2uRQ10GYEcAiqD80TRQ:uw8V7DBOzo0GYTA14K
Threatray 10'587 similar samples on MalwareBazaar
TLSH 6BC4D0455196F013C3D41BB0CDABEBF98F702F72DC32281270A4369DA62BB6F1956127
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: mail.mawaqaa.com
Sending IP: 69.0.149.219
From: <sheref@swtt.com.kw>
Subject: FW: FINAL SHIPPING DOCUMENT/DHL
Attachment: DOCUMENTS.r00 (contains "DOCUMENTS.exe")

AgentTesla SMTP exfil server:
us2.smtp.mailhostbox.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
67
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/45662/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.276.30589.22908.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Unauthorized injection to a recently created process
Creating a window
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file
Sending a UDP request
Using the Windows Management Instrumentation requests
Reading critical registry keys
Stealing user critical data
Enabling autorun
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/429090
Signature
Creates an undocumented autostart registry key
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 267032 Sample: DOCUMENTS.exe Startdate: 15/08/2020 Architecture: WINDOWS Score: 84 40 Yara detected AgentTesla 2->40 42 Machine Learning detection for sample 2->42 44 Machine Learning detection for dropped file 2->44 46 Initial sample is a PE file and has a suspicious name 2->46 7 DOCUMENTS.exe 7 2->7         started        process3 file4 34 C:\Users\user\AppData\Local\...\name.exe.lnk, MS 7->34 dropped 36 C:\Users\user\AppData\...\DOCUMENTS.exe.log, ASCII 7->36 dropped 38 C:\Users\user\AppData\Local\Temp\svhost.exe, PE32 7->38 dropped 50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->50 52 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 7->52 54 Injects a PE file into a foreign processes 7->54 11 DOCUMENTS.exe 2 7->11         started        14 cmd.exe 1 7->14         started        16 cmd.exe 3 7->16         started        19 cmd.exe 1 7->19         started        signatures5 process6 file7 56 Tries to steal Mail credentials (via file access) 11->56 58 Tries to harvest and steal browser information (history, passwords, etc) 11->58 21 reg.exe 1 1 14->21         started        24 conhost.exe 14->24         started        30 C:\Users\user\AppData\Local\Temp\...\name.exe, PE32 16->30 dropped 26 conhost.exe 16->26         started        32 C:\Users\user\...\name.exe:Zone.Identifier, ASCII 19->32 dropped 28 conhost.exe 19->28         started        signatures8 process9 signatures10 48 Creates an undocumented autostart registry key 21->48
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/66693c1ffcf35d165de90c9303977debf0cc419e94da378b8543517c4a86eb39/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-14 08:54:07 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mzutyh746normxpjbsjqhf355pymyqm6stndpc4finixysug5m4q._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
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AgentTesla
+ 10'577 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/200814-zvdnry2nqj/
Behaviour
NTFS ADS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Loads dropped DLL
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:
1.00
Link:
https://yomi.yoroi.company/submissions/66693c1ffcf35d165de90c9303977debf0cc419e94da378b8543517c4a86eb39

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

r00 0c3db32b517818d3088ae692e190378a0a989bd3c3c211348ea163191082cf77

AgentTesla

Executable exe 66693c1ffcf35d165de90c9303977debf0cc419e94da378b8543517c4a86eb39

(this sample)

  
Dropped by
MD5 c4fef1f3d09d47226897098738589c08
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45662/
  
Dropped by
SHA256 0c3db32b517818d3088ae692e190378a0a989bd3c3c211348ea163191082cf77

Comments