MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209. 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: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209
SHA3-384 hash: cb8df8ad8f9d3edb16e6a879328deb8236fe757e889012e18292862bde8cad6627a9f2b586008d595d35a2c8280b9449
SHA1 hash: e01bfdff08225928661098745a96182a7fc2c20f
MD5 hash: 23bf74d9c7e0e816a29b94d91b75926b
humanhash: alaska-illinois-hamper-eighteen
File name:PRE-ALERT IOF23-24JPR1298.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:17'408 bytes
First seen:2023-09-04 06:41:11 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 192:ClZHUTdUKyTkI1BCnVNhUUegQ5cF0p2WT/kYeXnTHavgC/lUD7grIMwG4skL0U9u:e9TkIWnjhUz3oerbmXTNCe+wtsY3T0w
Threatray 5'560 similar samples on MalwareBazaar
TLSH T1C8721716FA6D9764C929873DD8BBC3900B60F6810443CB0E774B23462D03F9ED6AA59B
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)
Reporter lowmal3
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
265
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
PRE-ALERT IOF23-24JPR1298.exe
Verdict:
Malicious activity
Analysis date:
2023-09-04 06:41:48 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/874c93b7-55d9-46c2-b55d-5ffabcaafe1f

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/445963/
Detection(s):
SecuriteInfo.com.Win32.RansomX-gen.12663.18036.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Creating a file
Launching a process
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Creating a window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/64f57c3b2a262962b7926a2e/reports/9677219f-4539-406e-9360-993282e94507/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209
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/e76c3f34-40ec-4ef9-95a9-59e3aac48eba
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1302661
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Creates multiple autostart registry keys
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 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
Snort IDS alert for network traffic
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 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 dnsIp2 2 Behavior Graph ID: 1302661 Sample: PRE-ALERT_IOF23-24JPR1298.exe Startdate: 04/09/2023 Architecture: WINDOWS Score: 100 35 mail.asiaparadisehotel.com 2->35 37 files.catbox.moe 2->37 39 2 other IPs or domains 2->39 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Antivirus / Scanner detection for submitted sample 2->51 53 8 other signatures 2->53 7 PRE-ALERT_IOF23-24JPR1298.exe 16 5 2->7         started        12 Mpeixcex.exe 14 5 2->12         started        14 Mpeixcex.exe 2->14         started        16 2 other processes 2->16 signatures3 process4 dnsIp5 45 files.catbox.moe 108.181.20.35, 443, 49713, 49718 ASN852CA Canada 7->45 33 C:\Users\user\AppData\Roaming\Mpeixcex.exe, PE32 7->33 dropped 67 Creates multiple autostart registry keys 7->67 69 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->69 71 Writes to foreign memory regions 7->71 18 aspnet_compiler.exe 15 4 7->18         started        73 Antivirus detection for dropped file 12->73 75 Multi AV Scanner detection for dropped file 12->75 77 Machine Learning detection for dropped file 12->77 23 aspnet_compiler.exe 3 12->23         started        79 Injects a PE file into a foreign processes 14->79 25 aspnet_compiler.exe 14->25         started        27 conhost.exe 16->27         started        29 conhost.exe 16->29         started        file6 signatures7 process8 dnsIp9 41 mail.asiaparadisehotel.com 112.213.92.100, 49715, 49726, 49737 SUPERDATA-AS-VNSUPERDATA-VN Viet Nam 18->41 43 api4.ipify.org 173.231.16.76, 443, 49714, 49725 WEBNXUS United States 18->43 31 C:\Users\user\AppData\Roaming\...\ODZrHmv.exe, PE32 18->31 dropped 55 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->55 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->57 59 Tries to steal Mail credentials (via file / registry access) 18->59 61 Creates multiple autostart registry keys 18->61 63 Tries to harvest and steal browser information (history, passwords, etc) 25->63 65 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->65 file10 signatures11
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209/
Threat name:
Win32.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2023-09-02 13:55:42 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
19 of 38 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=woi6p2bq5w7uyfs7jy6wwvghudtjustpcna7diw3ko6jy2wfgieq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
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2b04a8ff2faa3346370bc021df7c81c78a688c00a4e67a1f64580e5a14501bee
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2eaf94da95c7c5bfeee85e0c9b2eeb4203bc708e8538061624082b61866bc3b5
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332bd128b3b9a33e9d363b6a9578739d94471de4fe26d931bcff80219fcf4e9a
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71abfe67023b4b2085b187859621c1a5ef06fc8c8eafb4d084881a62a47ffc61
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8d83bca79f2bc2c8de276322813a9d775891c8445191f196c302f0965ba62ba3
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bab5aa60f42a897087607c0ba3e9ccf47ece8f56a34b4d6df7177c64bd526113
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c0d4dfab211b00bc04b0ef763548fe9cd5d0ab7330546875ef1e29adcf33f800
AgentTesla
+ 5'550 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/230904-hgcmzsec4x/
Behaviour
Modifies system certificate store
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
Adds Run key to start application
Looks up external IP address via web service
AgentTesla
Unpacked files
SH256 hash:
b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209
MD5 hash:
23bf74d9c7e0e816a29b94d91b75926b
SHA1 hash:
e01bfdff08225928661098745a96182a7fc2c20f
Detections:
PureCrypter_Stage1
Create hunting rule
Link:
https://www.unpac.me/results/0a9a7c4a-972c-4a95-b3f4-83f724f3ae35/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b391e7e830ed/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.97
Link:
https://yomi.yoroi.company/submissions/b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209

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:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
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 b391e7e830edbf4c165f4e3d6b54c7a0e69a4a6f1341f1a2db53bc9c6ac53209

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/445963/

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