MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762
SHA3-384 hash: d902409aef019319f8897aee3519ed175ab52acc546a7259cb816b496c3fb2fff52def5c9cd8dd9852d16a2aa3cb7ce9
SHA1 hash: a1d80fb54aa166d4201515831473aee97e651d99
MD5 hash: 87a24c2577827639bd8bdf8c6fab442c
humanhash: east-mexico-september-crazy
File name:e-dekont-2022072022.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:204'720 bytes
First seen:2022-09-11 13:17:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:wWCVqeUVw6MsKu8iRn21BZldZBsAaATMc:wNAlw6MZMurldZyTATMc
TLSH T14C14AE487520B98FC827C932D8D91C24ABA579779727D207B09733AC8A1D7DBDF091E2
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon e4dcd8c4d4d4c4d4 (95 x AgentTesla, 51 x Formbook, 12 x RemcosRAT)
Reporter GovCERT_CH
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
326
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
e-dekont-2022072022.pdf.exe
Verdict:
Malicious activity
Analysis date:
2022-09-11 13:19:32 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/857cfe2d-f67d-4694-a396-b329acc13c8d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/309309/
Detection(s):
SecuriteInfo.com.Trojan.PWS.Siggen3.22095.2535.5550.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Reading critical registry keys
Сreating synchronization primitives
Creating a window
Forced shutdown of a system process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/631de063d06d9bc4c7b9a229/reports/d0a95a8b-baa8-4585-9229-049150a55b67/overview
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:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/dc2cf0a9-14ed-405f-a169-2dcebdb63510
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1068459
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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)
Snort IDS alert for network traffic
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 / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses the Telegram API (likely for C&C communication)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Generic Downloader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-09-07 08:55:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=woy656eyob4ly6hgzmfullpvzn4vt7r65xjrmcjnlcarct5sk5ra._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/220911-qjx1psfdcm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot5314758702:AAGBscjQ2A3apiDv7B7fMcHFa4_iYpNUB8c/sendDocument
Unpacked files
SH256 hash:
27ea52006dca89889c53c22f15353b47e062f9d49198428abe601588a4635a79
MD5 hash:
e3e2242660ccd90ec690041841a4c3cb
SHA1 hash:
59f959504dc5e02fd66a171040154fa5a2f3988e
Link:
https://www.unpac.me/results/cc4c292d-5057-4fcc-b346-5f6518f11971/
SH256 hash:
176341bffc09c19acc5db294d8190447a5b12a3ba5362f7fc714ec5dbd07f28c
MD5 hash:
0cde0dc8f88ce1efc6a05034b529a19c
SHA1 hash:
58d371b03f0244e478bb1fe003bb7f6e02afa865
Link:
https://www.unpac.me/results/cc4c292d-5057-4fcc-b346-5f6518f11971/
SH256 hash:
b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762
MD5 hash:
87a24c2577827639bd8bdf8c6fab442c
SHA1 hash:
a1d80fb54aa166d4201515831473aee97e651d99
Link:
https://www.unpac.me/results/cc4c292d-5057-4fcc-b346-5f6518f11971/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3b1eef89870/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762

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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
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.

Malspam

AgentTesla

Executable exe b3b1eef8987078bc78e6cb0b45adf5cb7959fe3eedd316092d5881114fb25762

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/309309/

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