MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817. 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: 8


Intelligence 8 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817
SHA3-384 hash: 8b7caf8ce2fa05e6cb489534de02fd07f68c5d2fa82a970977fa72f74c5ff1a50bff89c3c8e2180ae9288580dfd71359
SHA1 hash: a7b18e9fb5c93361faff39ba7529c08410caccd4
MD5 hash: 685d9443c1dc6c8d9379b845ffbf6b86
humanhash: bravo-pip-december-gee
File name:Purchase Order.xlsx (4).exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'052'672 bytes
First seen:2020-08-08 08:20:46 UTC
Last seen:2020-08-08 08:54:14 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 24576:x3VmXmTZcWHe2qf9uWWuNCRnz97/QA/1q:x3VnT5Ha5WuNEz97/O
Threatray 71 similar samples on MalwareBazaar
TLSH 1B25DFC4D54C67A4DCE9AB306A3EEC3552237DADA874951C29CE3D373BFB3921026162
Reporter abuse_ch
Tags:AgentTesla exe


Avatar
abuse_ch
Malspam distributing AgentTesla:

HELO: transglobal.co.in
Sending IP: 103.99.1.149
From: Yacoob,<yacoob@transglobal.co.in>
Subject: FW:Purchase Order 
Attachment: Purchase Order.xlsx 4.rar (contains "Purchase Order.xlsx (4).exe")

AgentTesla SMTP exfil server:
mail.framafilms.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/42117/
Detection(s):
SecuriteInfo.com.Trojan.DownLoader34.18893.2161.14919.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Creating a file
Forced shutdown of a system process
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/415788
Signature
Allocates memory in foreign processes
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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 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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM_3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 260143 Sample: Purchase Order.xlsx (4).exe Startdate: 08/08/2020 Architecture: WINDOWS Score: 100 36 Yara detected AgentTesla 2->36 38 Yara detected AntiVM_3 2->38 40 Machine Learning detection for sample 2->40 42 3 other signatures 2->42 7 Purchase Order.xlsx (4).exe 3 2->7         started        11 BAVLA.exe 4 2->11         started        13 BAVLA.exe 3 2->13         started        process3 file4 32 C:\Users\...\Purchase Order.xlsx (4).exe.log, ASCII 7->32 dropped 44 Writes to foreign memory regions 7->44 46 Allocates memory in foreign processes 7->46 48 Injects a PE file into a foreign processes 7->48 15 RegSvcs.exe 3 7->15         started        18 RegSvcs.exe 7->18         started        20 conhost.exe 11->20         started        22 conhost.exe 13->22         started        signatures5 process6 signatures7 56 Injects a PE file into a foreign processes 15->56 24 RegSvcs.exe 2 6 15->24         started        28 RegSvcs.exe 15->28         started        30 RegSvcs.exe 15->30         started        58 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->58 60 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 18->60 process8 file9 34 C:\Users\user\AppData\Roaming\...\BAVLA.exe, PE32 24->34 dropped 50 Tries to steal Mail credentials (via file access) 24->50 52 Tries to harvest and steal browser information (history, passwords, etc) 24->52 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 24->54 signatures10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-08 08:11:28 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gvbubptolxmxrp2r3j4u7xz3jfzbmmdq4ne74qhaem4zqj7i5alq._file
Verdict:
unknown
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AgentTesla
+ 61 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/200808-5pt3gl2ghe/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
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:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817

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 5fb1cf2672a5b756121adaf6a9e2f15d5221eacd06f6f35e8a6f4127f6df0e76

AgentTesla

Executable exe 354340be6e5dd978bf51da794fdf3b4972163070e349fe40e023399827e8e817

(this sample)

  
Dropped by
MD5 de096c7b9691d3fd35f392fa1cfd6c26
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/42117/
  
Dropped by
SHA256 5fb1cf2672a5b756121adaf6a9e2f15d5221eacd06f6f35e8a6f4127f6df0e76

Comments