MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f1f8cbfc6921ce73c2c3668b2fded2a1bdb3cf8d5434f23090840115188fd7b9. 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: f1f8cbfc6921ce73c2c3668b2fded2a1bdb3cf8d5434f23090840115188fd7b9
SHA3-384 hash: 81ca4f2353e115812b56c504c6ca69738c8d464b96e0cba90ab35146beff852c25b190714487f0e6a7b7fd5848c83603
SHA1 hash: 0b01392f53c0fe65952495ba14af70420d2c5853
MD5 hash: 21eda5c3a9b012e0ae18f446da1b9eeb
humanhash: snake-jupiter-video-wolfram
File name:MAERSK KLEVEN V.949.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:4'128'960 bytes
First seen:2020-08-13 10:56:57 UTC
Last seen:2020-08-13 12:24:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 98304:/nt7/+5JqNI7/dy5KhrVZKMLp9sQD09lAHP/Pp1aN1:/nt7/+5JqNI7Lu4Y1
Threatray 2 similar samples on MalwareBazaar
TLSH 1B16B226BC53329BB94604F00ED6D5E4A1EE312C16B01637AD93946EF90DE577CCE8B2
Reporter abuse_ch
Tags:AgentTesla exe Maersk


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: maersk.com
Sending IP: 103.125.191.170
From: A.P moller <henry.zong@maersk.com>
Subject: RE : URGENT!!! SHIPPING DOC BL,SI,INV#462345 // MAERSK KLEVEN V.949E
Attachment: MAERSK KLEVEN V.949.zip (contains "MAERSK KLEVEN V.949.exe")

AgentTesla SMTP exfil server:
mail.gammavilla.org:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
AgentTeslaV2
Create hunting rule
Link:
https://www.capesandbox.com/analysis/45103/
Detection(s):
SecuriteInfo.com.Generic.mg.21eda5c3a9b012e0.31562.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a window
Using the Windows Management Instrumentation requests
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun
Enabling autorun by creating a file
Unauthorized injection to a system process
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/425925
Signature
Binary contains a suspicious time stamp
Creates an undocumented autostart registry key
Disables Windows Defender (via service or powershell)
Drops PE files to the startup folder
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 265554 Sample: MAERSK KLEVEN V.949.exe Startdate: 14/08/2020 Architecture: WINDOWS Score: 72 44 Yara detected AgentTesla 2->44 46 Drops PE files to the startup folder 2->46 48 Binary contains a suspicious time stamp 2->48 50 Disables Windows Defender (via service or powershell) 2->50 7 MAERSK KLEVEN V.949.exe 3 3 2->7         started        11 MAERSK KLEVEN V.949.exe 2->11         started        13 MAERSK KLEVEN V.949.exe 2->13         started        15 MAERSK KLEVEN V.949.exe 2->15         started        process3 file4 38 C:\Users\user\...\MAERSK KLEVEN V.949.exe, PE32 7->38 dropped 52 Creates an undocumented autostart registry key 7->52 54 Disables Windows Defender (via service or powershell) 7->54 17 InstallUtil.exe 7->17         started        20 powershell.exe 23 7->20         started        22 powershell.exe 25 7->22         started        24 12 other processes 7->24 signatures5 process6 signatures7 40 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->40 42 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 17->42 26 conhost.exe 20->26         started        28 conhost.exe 22->28         started        30 conhost.exe 24->30         started        32 conhost.exe 24->32         started        34 conhost.exe 24->34         started        36 9 other processes 24->36 process8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/f1f8cbfc6921ce73c2c3668b2fded2a1bdb3cf8d5434f23090840115188fd7b9/
Threat name:
Win32.Trojan.MereTam
Create hunting rule
Status:
Malicious
First seen:
2020-08-13 10:58:09 UTC
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=6h4mx7djehhhhqwdm2fs7xwsug63ht4nkq2pemeqqqarkgep264q._file
Verdict:
suspicious
Similar samples:
07f411bd02cb5654c8903477700a32802c0ed1f445d14144bc306a2af3aa7910
AgentTesla
189c657a03542965ec7bf8dff7ab727210eb88ddd7a76b1b95bb12a852e2c5c9
AgentTesla
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
keylogger stealer persistence evasion trojan spyware family:agenttesla
Link:
https://tria.ge/reports/200813-q1n6t4vvpe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Drops startup file
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Windows security modification
AgentTesla Payload
AgentTesla
Modifies WinLogon for persistence
Modifies Windows Defender Real-time Protection settings
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/f1f8cbfc6921ce73c2c3668b2fded2a1bdb3cf8d5434f23090840115188fd7b9

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 83532bb6a24d4eb669d3655d94345e3b44df39025e8c4ad024d5365575a70fe2

AgentTesla

Executable exe f1f8cbfc6921ce73c2c3668b2fded2a1bdb3cf8d5434f23090840115188fd7b9

(this sample)

  
Dropped by
MD5 6eaeb10b60ff1d30184145fa7b821c92
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/45103/
  
Dropped by
SHA256 83532bb6a24d4eb669d3655d94345e3b44df39025e8c4ad024d5365575a70fe2

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