MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d. 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: 15


Intelligence 15 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d
SHA3-384 hash: 235106fc3a43d5814ba87a0cb658b211d25d8c24dcaab2f1fd20500524402f2970e013850d6cc224bd8c49173bbc3d09
SHA1 hash: 8d6d761d03fcf7aa13239b49303bb3ef148cc027
MD5 hash: 8d184320446e65a4ea2bab20f5485a36
humanhash: vermont-item-mockingbird-texas
File name:Overdue Account Notice.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:674'312 bytes
First seen:2024-03-08 06:31:08 UTC
Last seen:2024-03-12 11:45:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:W6FtImAFqmeeYQhbpv6Kl2iSt8UgWbtiR7jkorqWXbkNbrxB+ZkR:D61FstQLhl1A3gWpiSoWaoDl
TLSH T1E1E423E23B4C8953E67E9DF49561380377F2EA630AE2E3E53C4C64D87C527607612C6A
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) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
File icon (PE):PE icon
dhash icon 0000000000000000 (872 x AgentTesla, 496 x Formbook, 296 x RedLineStealer)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
559
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d.exe
Verdict:
Malicious activity
Analysis date:
2024-03-08 06:34:34 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/f900905b-1641-4056-b921-b112ddc49173

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.26953.6162.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a process with a hidden window
Creating a window
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed
Link:
https://www.filescan.io/uploads/65eab0e2757c624818a634b1/reports/dac3d846-f223-46c5-81b5-d7b935cec977/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d
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/a8ace193-4473-435d-a383-4771f5620d30
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1405262
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
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
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)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1405262 Sample: Overdue Account Notice.exe Startdate: 08/03/2024 Architecture: WINDOWS Score: 100 53 mail.unitech-co.com.tr 2->53 57 Snort IDS alert for network traffic 2->57 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 14 other signatures 2->63 8 Overdue Account Notice.exe 7 2->8         started        12 DWFCEaGfchY.exe 5 2->12         started        14 boqXv.exe 2->14         started        16 boqXv.exe 2->16         started        signatures3 process4 file5 49 C:\Users\user\AppData\...\DWFCEaGfchY.exe, PE32 8->49 dropped 51 C:\Users\user\AppData\Local\...\tmp2549.tmp, XML 8->51 dropped 75 Writes to foreign memory regions 8->75 77 Allocates memory in foreign processes 8->77 79 Adds a directory exclusion to Windows Defender 8->79 18 RegSvcs.exe 1 4 8->18         started        23 powershell.exe 18 8->23         started        25 powershell.exe 19 8->25         started        27 schtasks.exe 1 8->27         started        81 Multi AV Scanner detection for dropped file 12->81 83 Machine Learning detection for dropped file 12->83 85 Injects a PE file into a foreign processes 12->85 29 RegSvcs.exe 12->29         started        31 schtasks.exe 12->31         started        33 conhost.exe 14->33         started        35 conhost.exe 16->35         started        signatures6 process7 dnsIp8 55 mail.unitech-co.com.tr 77.245.159.10, 49736, 49737, 587 NIOBEBILISIMHIZMETLERITR Turkey 18->55 47 C:\Users\user\AppData\Roaming\...\boqXv.exe, PE32 18->47 dropped 65 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->65 67 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 18->67 69 Tries to steal Mail credentials (via file / registry access) 18->69 37 WmiPrvSE.exe 23->37         started        39 conhost.exe 23->39         started        41 conhost.exe 25->41         started        43 conhost.exe 27->43         started        71 Tries to harvest and steal browser information (history, passwords, etc) 29->71 73 Hides that the sample has been downloaded from the Internet (zone.identifier) 29->73 45 conhost.exe 31->45         started        file9 signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-03-08 02:23:59 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
19 of 24 (79.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xdiw4o5pehv3lld4cof46wtrysyzlva53fwvremqkk5tkz55gz6q._file
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/240308-halmbahe53/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Checks computer location settings
Unpacked files
SH256 hash:
c13de2b1d1a7ca26d4b05683aef78e4eea08fc9389accde84acb06c0f16db0c7
MD5 hash:
dd723a82251fbb833658a533e470b3f7
SHA1 hash:
ea1bc5d79eb5618c24f22bcacef2c00ed39d9e18
Link:
https://www.unpac.me/results/cbac337e-fd26-422f-852e-e2182cb002d9/
SH256 hash:
b1f63b3ea7cc065bf6b04d13fdb0c3a43f336045367dac6f45ac49b4d9b2403e
MD5 hash:
a8d01745eed77e9879bcc82a29870a5a
SHA1 hash:
db24b6f7340e7e3b2527e429df2ab48d77ed5a1a
Link:
https://www.unpac.me/results/cbac337e-fd26-422f-852e-e2182cb002d9/
SH256 hash:
c10c9b0882bac6f788f48b4dabe3291b14e639e650f2b9fcb0bc174ac92ae02b
MD5 hash:
7c7fb6daa78beb69128991ff893143ed
SHA1 hash:
c01bb99984b12b84129db80eae1d5d8341a358e2
Link:
https://www.unpac.me/results/cbac337e-fd26-422f-852e-e2182cb002d9/
SH256 hash:
7e3cca4f44aae181a230e7c009d6e82124977410613568c7de948f037bcbfb71
MD5 hash:
20014d6c3561702764c2371200d7a9b5
SHA1 hash:
88ed66c8b20435472c25b2bd91d5925c60e68e4b
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/cbac337e-fd26-422f-852e-e2182cb002d9/
Parent samples :
705322479931288652d8dcca3391e35ec17f003f68085455d8f6e2acec7dd2f7
5746f44f3a3bca690d30ee45e179bcf003c7759b20a0394563cb30e3d2b4e6ea
19984d5d61f312c7e0ed20f4b4f5f2991cabc5dfd44c2a089416783791af843b
2b638047b4126420741fcbd3c7ea9b276f48a8005a629955f8a568cc7e7634c4
b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d
SH256 hash:
b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d
MD5 hash:
8d184320446e65a4ea2bab20f5485a36
SHA1 hash:
8d6d761d03fcf7aa13239b49303bb3ef148cc027
Detections:
INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Link:
https://www.unpac.me/results/cbac337e-fd26-422f-852e-e2182cb002d9/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8d16e3baf21/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.92
Link:
https://yomi.yoroi.company/submissions/b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d

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_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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 b8d16e3baf21ebb5ac7c138bcf5a71c4b195d41dd96d58919052bb3567bd367d

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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