MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b33fed1a67ba44a36910b8a91b4c5478262f7b5cd0cc0621a72be29fc19a1c89. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b33fed1a67ba44a36910b8a91b4c5478262f7b5cd0cc0621a72be29fc19a1c89
SHA3-384 hash: c6b5cf9cd2b6f44a563b5c04bb5177e36c20bce4e6d1ceabe15ea9f7e54acc5f29fbcf0445e6ed3d57697b81426c90e5
SHA1 hash: 6683d3616d79c92313fb8894900040fb9411ccb2
MD5 hash: 71181a308717c6ada609d17bd8702841
humanhash: failed-beer-beryllium-enemy
File name:doc06983120221101093537.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:885'760 bytes
First seen:2022-11-18 12:31:21 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 12288:cqFIH1G2iN0FBu2Yg82yDMsARsOKQLZi3qF9SrkwdCUFchAk4MndZ5b2pq:bFf18HYg82yDMh6vQLo39Az/p
Threatray 22'837 similar samples on MalwareBazaar
TLSH T1B415123BB387AF12D2661B3D81E3922073F18649A673C7862EDA13970E173566C4674F
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter Anonymous
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
235
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
doc06983120221101093537.exe
Verdict:
Malicious activity
Analysis date:
2022-11-18 12:32:50 UTC
Tags:
agenttesla
Link:
https://app.any.run/tasks/a40f2a9a-8c42-4766-ac57-f60a797f5e5b

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/335751/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Using the Windows Management Instrumentation requests
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/63777b434dc24c6f80b8639f/reports/1fd7a005-f9f2-40a2-be9c-16e656da6c4e/overview
Result
Verdict:
UNKNOWN
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/6b89ed40-bdc6-4cd9-ac8b-eec220250389
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1116485
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains very large array initializations
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
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 / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 749197 Sample: doc06983120221101093537.exe Startdate: 18/11/2022 Architecture: WINDOWS Score: 100 22 Malicious sample detected (through community Yara rule) 2->22 24 Antivirus / Scanner detection for submitted sample 2->24 26 Multi AV Scanner detection for submitted file 2->26 28 7 other signatures 2->28 6 doc06983120221101093537.exe 3 2->6         started        process3 file4 14 C:\Users\...\doc06983120221101093537.exe.log, ASCII 6->14 dropped 30 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 6->30 32 May check the online IP address of the machine 6->32 34 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 6->34 36 Injects a PE file into a foreign processes 6->36 10 doc06983120221101093537.exe 15 3 6->10         started        signatures5 process6 dnsIp7 16 host39.registrar-servers.com 68.65.122.214, 49719, 587 NAMECHEAP-NETUS United States 10->16 18 api.ipify.org.herokudns.com 3.220.57.224, 443, 49716 AMAZON-AESUS United States 10->18 20 api.ipify.org 10->20 38 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 10->38 40 Tries to steal Mail credentials (via file / registry access) 10->40 42 Tries to harvest and steal ftp login credentials 10->42 44 Tries to harvest and steal browser information (history, passwords, etc) 10->44 signatures8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b33fed1a67ba44a36910b8a91b4c5478262f7b5cd0cc0621a72be29fc19a1c89/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-11-18 03:39:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wm762gthxjckg2iqxcurwtcupatc66242dgaminhfprj7qm2dseq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
07bfbb03eaa00f4f7647170c4ec9117912eb28f3f0dfe12297e239ddd1dfcb6a
AgentTesla
40f4747ea2ffa3c449e6ed8b5c360a9ecc5348417ae953ff15ad4c902a162314
AgentTesla
6c5f49eb7032822f64a980ba03f7a369994e46082085edc447e55758a5894cf4
AgentTesla
8ccea9d264f5584180de3b726b676590bfec351367d48a03decb1ee37f9f3965
AgentTesla
9f94bfaf7433e3b0142b5a57965199ec01c4e69b1c5598642d165138ebf742f3
AgentTesla
be06f8a3ed040aadf2598bc5a9b4c886c271ad7866505dba11b723dba968f518
AgentTesla
c7a456f2d97f0c34cc5fd56f6825d60998a5d730e7d1e9157867257dfbaec0e7
AgentTesla
ee0c99e7ec4467b39f4096ff32d45abc0599a93549524704737e8670045ff6be
AgentTesla
+ 22'827 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/221118-pql2cahc87/
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
Looks up external IP address via web service
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/44f2a99a-def6-405c-a710-f59f87be9a0b
Unpacked files
SH256 hash:
f536184a18f4b8a43419d83a8a1340890a9abc020a1f503f16cf396ac32fba27
MD5 hash:
9d47f36080dc54c968a56a32459c6740
SHA1 hash:
80a0a9730981bab730361706971536cde65db0bb
Link:
https://www.unpac.me/results/1300c721-fc79-44e3-b67f-dd660fa47b9d/
SH256 hash:
a327516357b9fa1a75753b3fbd0030e13f374be7cefcdf983d0b731f278b0c59
MD5 hash:
404efdeb9931733904da07f96fabeb72
SHA1 hash:
7ce363cd612f1d9a90b33ec196c4d0a49cdaee02
Link:
https://www.unpac.me/results/1300c721-fc79-44e3-b67f-dd660fa47b9d/
SH256 hash:
6be8c4f4ffbd0df4ee993ad1003ee43484e11ee94c118047075a6fc47d0336c9
MD5 hash:
ccd57cf2598192bba2d5ad4dd4469740
SHA1 hash:
643b124256064137e9b0c7864f06060ce03039ff
Link:
https://www.unpac.me/results/1300c721-fc79-44e3-b67f-dd660fa47b9d/
Parent samples :
2d4cfa53a85fe7078163331cdf1577d6103cd7fb8a9c2f498ee2542bbc7f7d18
381818e0a312a214fca92bb98e320c1b12787a8b3a3192e44b1a9defdae1cc2a
51569e10e9303b81018b77b602e4b6665d3930b179455be4ea5ca754641fceea
SH256 hash:
b33fed1a67ba44a36910b8a91b4c5478262f7b5cd0cc0621a72be29fc19a1c89
MD5 hash:
71181a308717c6ada609d17bd8702841
SHA1 hash:
6683d3616d79c92313fb8894900040fb9411ccb2
Link:
https://www.unpac.me/results/1300c721-fc79-44e3-b67f-dd660fa47b9d/
Malware family:
AgentTesla.v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b33fed1a67ba/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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.

Malspam

AgentTesla

Executable exe b33fed1a67ba44a36910b8a91b4c5478262f7b5cd0cc0621a72be29fc19a1c89

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/335751/

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