MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30. 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: 11


Intelligence 11 IOCs YARA 5 File information Comments
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SHA256 hash: 8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30
SHA3-384 hash: c94f35fb5a7f5c7e3547a6f52367899a35613a767a544e7f4737b888a72a14c78dda32700a95bf91e5ed4b2036f8edd3
SHA1 hash: f2298fa50a79b9161797b9e33a1162d2bb013055
MD5 hash: 1ffec2718a23ea277788f51035465d2c
humanhash: massachusetts-romeo-ack-gee
File name:IMG_5203_21060008pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:44'544 bytes
First seen:2023-05-09 09:02:59 UTC
Last seen:2023-05-13 22:52:18 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'649 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 768:yTvElu4uJKsuwSRVNCX6Q8tNLtqKyXDzdk:y7Elu4GaRVNCKptqKyXa
Threatray 2'142 similar samples on MalwareBazaar
TLSH T18313E691E79CEE6BD91F037998BE06111036EF791536D61E3F88B00869733533862EDA
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon d8dc888898a898b8 (6 x AgentTesla, 1 x XWorm)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
254
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
IMG_5203_21060008pdf.exe
Verdict:
Malicious activity
Analysis date:
2023-05-09 09:03:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/e1ecb1c3-848d-486e-84b0-891f4b95c72b

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/387768/
Detection(s):
SecuriteInfo.com.Win32.RATX-gen.9568.25386.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
DNS request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a window
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/645a0c46b664422b69d5f64e/reports/63fc35e4-b0d9-40d4-9f8e-fa3b48a35e52/overview
Verdict:
Malicious
Labled as:
MSIL/GenKryptik.GJQC trojan
Link:
https://www.hybrid-analysis.com/sample/8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/0329c1fe-909e-4d0a-b14f-8ea687df4dca
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1229033
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
Encrypted powershell cmdline option found
Found malware configuration
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
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 861997 Sample: IMG_5203_21060008pdf.exe Startdate: 09/05/2023 Architecture: WINDOWS Score: 100 77 Multi AV Scanner detection for domain / URL 2->77 79 Found malware configuration 2->79 81 Antivirus detection for URL or domain 2->81 83 7 other signatures 2->83 8 IMG_5203_21060008pdf.exe 16 8 2->8         started        13 Gquhoh.exe 3 2->13         started        15 Gquhoh.exe 2->15         started        process3 dnsIp4 57 192.236.192.61, 49695, 49696, 49698 HOSTWINDSUS United States 8->57 43 C:\Users\user\AppData\Roaming\...behaviorgraphquhoh.exe, PE32 8->43 dropped 45 C:\Users\user\AppData\...\Shyyynovenone.exe, PE32 8->45 dropped 47 C:\Users\user\...behaviorgraphquhoh.exe:Zone.Identifier, ASCII 8->47 dropped 49 C:\Users\...\IMG_5203_21060008pdf.exe.log, ASCII 8->49 dropped 85 Encrypted powershell cmdline option found 8->85 87 Writes to foreign memory regions 8->87 89 Allocates memory in foreign processes 8->89 91 Injects a PE file into a foreign processes 8->91 17 Shyyynovenone.exe 14 4 8->17         started        20 InstallUtil.exe 14 2 8->20         started        23 InstallUtil.exe 8->23         started        25 powershell.exe 16 8->25         started        93 Multi AV Scanner detection for dropped file 13->93 95 Machine Learning detection for dropped file 13->95 27 powershell.exe 13->27         started        29 powershell.exe 15->29         started        file5 signatures6 process7 dnsIp8 59 Multi AV Scanner detection for dropped file 17->59 61 Machine Learning detection for dropped file 17->61 63 Encrypted powershell cmdline option found 17->63 75 3 other signatures 17->75 31 powershell.exe 17->31         started        33 InstallUtil.exe 17->33         started        51 logxtai.shop 198.54.116.202, 49700, 587 NAMECHEAP-NETUS United States 20->51 53 api4.ipify.org 64.185.227.155, 443, 49697 WEBNXUS United States 20->53 55 api.ipify.org 20->55 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->65 67 Tries to steal Mail credentials (via file / registry access) 20->67 69 Tries to harvest and steal browser information (history, passwords, etc) 20->69 71 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 23->71 73 May check the online IP address of the machine 23->73 35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        39 conhost.exe 29->39         started        signatures9 process10 process11 41 conhost.exe 31->41         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30/
Threat name:
Win32.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-05-09 00:24:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
17 of 37 (45.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rja3ph4jcba32odnbcdae7r2eff7yfmx6wky3wexku3bfx4h3qya._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
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AgentTesla
3a60b811771921ba75cd82dedb4c98b15419e2487ac00ba78ca7d19b04a3747c
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43a5329fe9f6d43a4de5875d0fe039a056f10a1887a52ad0acd11863587b9204
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62c22196418123be9af8ab9c5a0d6ceac9b966b8ac5c241fa2f59fe64f3dbf50
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6f87506ad54bd39f08b8f3da216f4f31713377aa512b32628c2ef53162b222ff
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84c18f78f11b9bc3fd3e96925d2a7b76ab5ecfb927c377ad27456e191815b24a
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91dff7bab30d0d6713ba56c522859ce8f773611c10ec7a7e7a0d9889612d0641
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a0959f72e13211452dc49f9359f43d5b7df3a98fb24f0fbaf0ec2c29d85bb1ec
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a86d1dc8abd7cdd7ce8eb34ee9e739c35ba49d2a4a4c9d62d0da1d2dc14addf1
AgentTesla
+ 2'132 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230509-kz1tmsfa77/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
AgentTesla
Unpacked files
SH256 hash:
8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30
MD5 hash:
1ffec2718a23ea277788f51035465d2c
SHA1 hash:
f2298fa50a79b9161797b9e33a1162d2bb013055
Link:
https://www.unpac.me/results/58504112-56f7-4337-a29e-d5e0cdd91fb0/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30

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:MSIL_SUSP_OBFUSC_XorStringsNet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
Reference:https://github.com/dr4k0nia/yara-rules
Rule name:msil_susp_obf_xorstringsnet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
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 8a41b79f891041bd386d0886027e3a214bfc1597f5958dd897553612df87dc30

(this sample)

  
Dropped by
agenttesla
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/387768/

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