MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef. 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: 17


Intelligence 17 IOCs YARA 15 File information Comments
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SHA256 hash: b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef
SHA3-384 hash: 8d79e58232fadbc8e5ba0dfafad2389a6cacf260c5777984e0423f396b864761ae9fe58a1cf68eac4d629409b2bc5bd5
SHA1 hash: 4f73cef74f3ba680c9f51f96c457fe7349c268ed
MD5 hash: 71f96cfe475e2af8a34a490c612d1de1
humanhash: black-triple-pennsylvania-bacon
File name:2023000000025 scan_Fiyat Teklif - 10523 2023935164- AGY 0%01%.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:757'760 bytes
First seen:2024-01-19 16:36:28 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:1m1emNigjjN2iN+X60OpmM6brPy11A23ro4jGzNXl5z3FuhxfQfUQ:1mggjjN1GYmbbm17oy85zVuX
Threatray 4'683 similar samples on MalwareBazaar
TLSH T181F40152F2282F86C93A53FD8D54A02057F6BF67421ED7852EF271CB14727C21A4AD2B
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 0814084d0d060004 (2 x AgentTesla)
Reporter abuse_ch
Tags:AgentTesla exe geo TUR

Intelligence

File Origin
# of uploads :
1
# of downloads :
308
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef.exe
Verdict:
Malicious activity
Analysis date:
2024-01-19 16:53:50 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/b2adde89-9636-436a-9178-891bcf434224

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/471725/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Setting a keyboard event handler
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/65aaa5343a0cf312d51760b3/reports/9f86da7d-0688-4f81-beb8-0fc9d233af8f/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef
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/61000f34-318a-4a06-8d80-e3575551c028
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1377604
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
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)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1377604 Sample: 2023000000025_scan_Fiyat_Te... Startdate: 19/01/2024 Architecture: WINDOWS Score: 100 27 mail.bilimseltipyayinevi.com 2->27 39 Snort IDS alert for network traffic 2->39 41 Found malware configuration 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 8 other signatures 2->45 7 2023000000025_scan_Fiyat_Teklif_-_10523_2023935164-_AGY_0%01%.exe 3 2->7         started        10 ctsdvwT.exe 3 2->10         started        12 ctsdvwT.exe 2 2->12         started        signatures3 process4 signatures5 47 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->47 49 Injects a PE file into a foreign processes 7->49 14 2023000000025_scan_Fiyat_Teklif_-_10523_2023935164-_AGY_0%01%.exe 1 5 7->14         started        51 Multi AV Scanner detection for dropped file 10->51 53 Machine Learning detection for dropped file 10->53 55 Contains functionality to register a low level keyboard hook 10->55 19 ctsdvwT.exe 2 10->19         started        21 ctsdvwT.exe 2 12->21         started        process6 dnsIp7 29 mail.bilimseltipyayinevi.com 94.103.35.2, 49719, 587 VERITEKNIKTR Turkey 14->29 23 C:\Users\user\AppData\Roaming\...\ctsdvwT.exe, PE32 14->23 dropped 25 C:\Users\user\...\ctsdvwT.exe:Zone.Identifier, ASCII 14->25 dropped 31 Tries to steal Mail credentials (via file / registry access) 14->31 33 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->33 35 Installs a global keyboard hook 14->35 37 Tries to harvest and steal browser information (history, passwords, etc) 21->37 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2024-01-18 12:29:35 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
14 of 24 (58.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wfmlup2jxvq67rsa67pk4dmyov6zmslq6gxyhil5mgolj6y7f7xq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
260b5fde0f86117023af4e07b129c9cab292e571850316a3a768fd69354c1b34
AgentTesla
821ec2ddc08c58c9f292ccf54ba288925f3bd591224c39dea71d4711e6cbc1e9
AgentTesla
85298c6898a4727bb31afd49622cc76491efab5155beddb2b82931245c23980e
AgentTesla
a82089975707db44560ed2654b5686350cc59b1b4b81d40bb3c84105de1d7408
AgentTesla
c96f6dd4e937896bfb14ec68bca64b3981e9109d3d9ce182bd42f3cb18e9726d
AgentTesla
fe36c4907fb678f6da358dc16c0bc9115f92a5a2fcc51d0aa8b496a4d0bd3e65
AgentTesla
ff41be80d96de138d24e9e87a3a10369b216e9efc8fbe70691c8b64818398cf6
AgentTesla
+ 4'673 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240119-t4tesshggq/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Unpacked files
SH256 hash:
4b1b5c13062076b8482834256679ddd7ce05b1aab77f38f8b1250c2473a3b917
MD5 hash:
bd66dd1aa735c8a6a085672df43ebbf7
SHA1 hash:
f62542de32e7eeb87cad60d27d7c95a1efb6e0f3
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Link:
https://www.unpac.me/results/1ab639eb-290e-4ac1-9d44-ccd1cfd759a7/
Parent samples :
b601d1ef1cb314076912264021dc3dde56e5697cd344fc6da9b954230ccf8aaf
4ec0dc97a22820f4d65d46424b991f5a8d84db9272d76a9801f5c31d299d42f3
751597396e020f0bc9c02049fba72290571f6ade9b2c079f33bf1e70f99a30f6
b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef
edec9c924aa195a6451cf690f6295eb5a1930ffba94df2a9ebcc946502e2b0f9
SH256 hash:
292a0518841e86949acf831703623779d63591cc95ebc4030d00da3b72066c77
MD5 hash:
4d697347eedf1d51cc5fcf7a066621f1
SHA1 hash:
bb9398d6d9f9ff3c74aadee7cdac6e04fab4770d
Link:
https://www.unpac.me/results/1ab639eb-290e-4ac1-9d44-ccd1cfd759a7/
SH256 hash:
dae9987d52a3e3381c80a9ce5a02790cf74ecfa26c0a5a2d658200342ac74469
MD5 hash:
f41fb55d2d452011d43936ee6c21edd5
SHA1 hash:
3831d396bd3960cc69a78812fbae2f24abf89eb2
Link:
https://www.unpac.me/results/1ab639eb-290e-4ac1-9d44-ccd1cfd759a7/
SH256 hash:
8037ef08267cdae294eca7457dacbef5e394c2708322739ea40ef82ba85ca85b
MD5 hash:
acc76a8930c051709127ec972edbf8e8
SHA1 hash:
2d6f4472e4550408a56d3a1e7f900c531c05374c
Link:
https://www.unpac.me/results/1ab639eb-290e-4ac1-9d44-ccd1cfd759a7/
SH256 hash:
b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef
MD5 hash:
71f96cfe475e2af8a34a490c612d1de1
SHA1 hash:
4f73cef74f3ba680c9f51f96c457fe7349c268ed
Link:
https://www.unpac.me/results/1ab639eb-290e-4ac1-9d44-ccd1cfd759a7/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b158ba3f49bd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef

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:AgentTeslaV3
Create hunting rule
Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
Rule name:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
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
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
Author:Elastic Security

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Malspam

AgentTesla

Executable exe b158ba3f49bd61efc640f7deae0d98757d964970f1af83a17d619cb4fb1f2fef

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/471725/

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