MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357. 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 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357
SHA3-384 hash: 6183bc556886177d1a0b22c44e4a9aa01d58f6993a26e8b6880d7d10c4274cdffbb7d4bc9f256b1854b7ca128daf282c
SHA1 hash: ba47840dfff065356f10a05464c75c6a4cb70b7a
MD5 hash: d81b4a2a5f96fb13ba259a1fae296ace
humanhash: wolfram-spring-sink-nitrogen
File name:Zamów nr 90016288247_ ZNG_1406_MG_2024_004782922.pdf.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:2'066'432 bytes
First seen:2024-05-23 07:04:22 UTC
Last seen:2024-05-23 07:23:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 79856d4b034c49dc3dd3e403b25b6bbf (3 x AgentTesla, 2 x PrivateLoader)
ssdeep 24576:kynjN3fi9dEoZR814OEQjls30eTFxmT4i8eMOq52tOXuq01dKqOFCBvx1prO:VjN3CdJ81nEQhs30eruqsrOFCBbprO
TLSH T12DA5C005A3F801E4E46BC634CA599733D3B1B40A1734E58B0A5AD7922F73EE15BBF612
TrID 72.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
13.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.EXE) OS/2 Executable (generic) (2029/13)
2.5% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter Anonymous
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
364
Origin country :
PL PL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357.exe
Verdict:
Malicious activity
Analysis date:
2024-05-23 07:07:34 UTC
Tags:
evasion smtp agenttesla stealer exfiltration
Link:
https://app.any.run/tasks/6979ee4b-a4d4-45c8-aa3e-552cc41ef872

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.23855.26172.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=664eeb1602cf134c1c7f8491win7simulatehigh_evasion
Tags:
Execution Network Static Stealth Gensteal
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
Reading critical registry keys
Connection attempt to an infection source
Creating a window
Stealing user critical data
Query of malicious DNS domain
Sending a TCP request to an infection source
Unauthorized injection to a system process
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357
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/22e0c909-1850-4c8e-9929-4a3b77710d50
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1446308
Signature
AI detected suspicious sample
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Sigma detected: Suspicious Double Extension File Execution
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357/
Threat name:
Win64.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-05-23 05:05:16 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=y2c2xghbsefphjisq2tnndlqnyvhxzjjr52maypzropipyuq2nlq._file
Verdict:
suspicious
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240523-hwjd3sha4s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
AgentTesla
Unpacked files
SH256 hash:
c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357
MD5 hash:
d81b4a2a5f96fb13ba259a1fae296ace
SHA1 hash:
ba47840dfff065356f10a05464c75c6a4cb70b7a
Detections:
INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCMD
Create hunting rule
Link:
https://www.unpac.me/results/58d961b1-c4ce-490f-9b95-6af01ea9640f/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c685ab98e191/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/c685ab98e1910af3a51286a6d68d706e2a7be5298f74c061f98b9e87e290d357

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:AgentTeslaV5
Create hunting rule
Author:ClaudioWayne
Description:AgentTeslaV5 infostealer payload
Rule name:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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_UACBypass_CMSTPCMD
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
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: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:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Generic_Threat_9f4a80b2
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_AgentTesla_ebf431a8
Create hunting rule
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.

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
AUTH_APIManipulates User AuthorizationADVAPI32.dll::RevertToSelf
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::ImpersonateLoggedOnUser
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenThreadToken
KERNEL32.dll::VirtualAllocEx
KERNEL32.dll::VirtualAllocExNuma
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::FreeConsole
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::GetSystemDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptDecrypt
bcrypt.dll::BCryptDestroyKey
bcrypt.dll::BCryptEncrypt
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptImportKey
bcrypt.dll::BCryptOpenAlgorithmProvider
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
ADVAPI32.dll::RegSetValueExA

Comments