MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4. 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: 14


Intelligence 14 IOCs YARA 18 File information Comments
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SHA256 hash: b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4
SHA3-384 hash: 205e616b363eeb8de24f4b8e33b0bd5d204b16e87901684fa243de3787bd041831b566668b6e692d7dcb32ec049e4975
SHA1 hash: 2c3dc94621292b3a97904faf476c1f944efbbac8
MD5 hash: e966081889406e72da8e58d5266e11ce
humanhash: arizona-charlie-paris-avocado
File name:invoice‮f؜d؜p؜..exe
Download: download sample
Signature AgentTesla
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File size:1'035'687 bytes
First seen:2024-05-14 13:27:02 UTC
Last seen:2024-05-14 14:28:52 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ee763a326b5b863d42237611dc07ebef (4 x AgentTesla, 3 x Formbook, 1 x Loki)
ssdeep 24576:MtbIyTFaXPCDslnPQd/MD3ZRfchorKTGLz1:Mt8yhaXqSs/MDp5woCw1
TLSH T15225CFD5AAD806E4CB7A803C98813116B5A2F8F1036CD7EFC7911A561F636A1AD3F770
TrID 48.7% (.EXE) Win64 Executable (generic) (10523/12/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
File icon (PE):PE icon
dhash icon 8ab2da92eacc868e (4 x AgentTesla)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
382
Origin country :
US US
Vendor Threat Intelligence
Malware family:
agenttesla
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ID:
1
File name:
b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4.exe
Verdict:
Malicious activity
Analysis date:
2024-05-14 13:29:21 UTC
Tags:
stealer agenttesla ftp exfiltration
Link:
https://app.any.run/tasks/447f5ebc-924d-4325-9dee-d40d39e002f4

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.PWSX-gen.24931.27102.UNOFFICIAL
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Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Reading critical registry keys
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Creating a window
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4
Result
Verdict:
MALICIOUS
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Cobalt Strike
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/20df4cba-5493-4ab5-befd-09f5d2fc56d2
Result
Threat name:
AgentTesla
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Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1441376
Signature
Antivirus detection for URL or domain
Contains functionality to log keystrokes (.Net Source)
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
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
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 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)
Very long command line found
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1441376 Sample: invoicefdp..exe Startdate: 14/05/2024 Architecture: WINDOWS Score: 100 28 ftp.kurtogluendustriyel.com 2->28 30 fp2e7a.wpc.phicdn.net 2->30 32 2 other IPs or domains 2->32 42 Snort IDS alert for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 7 other signatures 2->48 8 invoicefdp..exe 2 2->8         started        signatures3 process4 signatures5 50 Very long command line found 8->50 52 Encrypted powershell cmdline option found 8->52 11 powershell.exe 16 8->11         started        14 conhost.exe 8->14         started        process6 signatures7 54 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 11->54 56 Writes to foreign memory regions 11->56 58 Injects a PE file into a foreign processes 11->58 16 MSBuild.exe 15 2 11->16         started        20 WerFault.exe 20 16 11->20         started        22 conhost.exe 11->22         started        24 MSBuild.exe 11->24         started        process8 dnsIp9 26 ftp.kurtogluendustriyel.com 78.135.65.25, 21, 49730, 49737 PREMIERDC-VERI-MERKEZI-ANONIM-SIRKETIPREMIERDC-SHTR Turkey 16->26 34 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->34 36 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->36 38 Tries to steal Mail credentials (via file / registry access) 16->38 40 3 other signatures 16->40 signatures10
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4/
Threat name:
Win64.Trojan.Midie
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Status:
Malicious
First seen:
2024-05-14 08:48:05 UTC
File Type:
PE+ (Exe)
Extracted files:
2
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp4cmgw56xdzb4ccuun3dkequbq7clrllju755h5bfrrffubfg2a._file
Result
Malware family:
agenttesla
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Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240514-qp5bzahc67/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Command and Scripting Interpreter: PowerShell
Suspicious use of SetThreadContext
AgentTesla
Unpacked files
SH256 hash:
b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4
MD5 hash:
e966081889406e72da8e58d5266e11ce
SHA1 hash:
2c3dc94621292b3a97904faf476c1f944efbbac8
Link:
https://www.unpac.me/results/5f7350c3-8760-4ca8-bc1b-a3f216941f5e/
Malware family:
AgentTesla
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3f8261addf5/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/b3f8261addf5c790f042a51bb1a890a061f12e2b5a69fef4fd096312968129b4

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:AgentTeslaV2
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Author:ditekshen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:AgentTeslaV3
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Author:ditekshen
Description:AgentTeslaV3 infostealer payload
Rule name:AgentTeslaV5
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Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:DebuggerCheck__API
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:INDICATOR_EXE_Packed_GEN01
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Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
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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
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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
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Author:ditekSHen
Description:Detects executables referencing many email and collaboration clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
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Author:ditekSHen
Description:Detects executables referencing many file transfer clients. Observed in information stealers
Rule name:INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
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Author:ditekSHen
Description:Detects executables referencing Windows vault credential objects. Observed in infostealers
Rule name:malware_Agenttesla_type2
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Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:MALWARE_Win_AgentTeslaV2
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Author:ditekSHen
Description:AgenetTesla Type 2 Keylogger payload
Rule name:NETexecutableMicrosoft
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Author:malware-lu
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:Windows_Generic_Threat_808f680e
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Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
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Author:Elastic Security
Reference:https://www.elastic.co/security-labs/attack-chain-leads-to-xworm-and-agenttesla

File information

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

  
Delivery method
Other

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 (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW

Comments