MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd. 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 16 File information Comments
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SHA256 hash: b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd
SHA3-384 hash: f66b9a95d460b84729414769eb8a5d923c560d54613196141b1fcc3f327bc3b424f01cbaf7396d0f19002fffab7a1725
SHA1 hash: 60ef2a2a370ce3855c7b249462dc5584aeba5161
MD5 hash: e1a4c35915d41d959fdf286da81afedb
humanhash: texas-early-echo-helium
File name:OUU.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:402'432 bytes
First seen:2024-03-19 08:20:53 UTC
Last seen:2024-03-19 10:30:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'597 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 6144:Y59wN26uzKsZax2DhLFs5XA45DtRk3FresAPGWAq5OIWcUSmR:YNHzxZax2VBsxA4t8csAjA0O/cUV
Threatray 4'852 similar samples on MalwareBazaar
TLSH T17084D052FEDA9A51D8A410FBA8357DCD21A12E48C9CBB1F862FC794DCC322D2FE58505
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon d1d0e8e8e4f4ecd4 (30 x AgentTesla, 18 x RedLineStealer, 16 x SnakeKeylogger)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
360
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd.exe
Verdict:
Malicious activity
Analysis date:
2024-03-19 08:21:26 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/0271675a-f220-4b0a-a33a-73bfd85f2873

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.32165.7259.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Connection attempt
Sending a custom TCP request
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
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
monero stealer
Link:
https://www.filescan.io/uploads/65f94af01d6034c3c02c1b12/reports/20220631-aa1f-448c-909d-685be445fcc2/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/43ef3da0-3d50-49ef-8af3-974be130a832
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1411524
Signature
Contains functionality to inject code into remote processes
Contains functionality to log keystrokes (.Net Source)
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
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)
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1411524 Sample: OUU.exe Startdate: 19/03/2024 Architecture: WINDOWS Score: 100 27 us2.smtp.mailhostbox.com 2->27 29 api.ipify.org 2->29 43 Found malware configuration 2->43 45 Malicious sample detected (through community Yara rule) 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 3 other signatures 2->49 7 OUU.exe 3 2->7         started        10 mpTrle.exe 3 2->10         started        12 mpTrle.exe 2 2->12         started        signatures3 process4 signatures5 51 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->51 53 Contains functionality to inject code into remote processes 7->53 55 Injects a PE file into a foreign processes 7->55 14 OUU.exe 16 5 7->14         started        57 Multi AV Scanner detection for dropped file 10->57 59 Machine Learning detection for dropped file 10->59 19 mpTrle.exe 14 2 10->19         started        21 mpTrle.exe 2 12->21         started        process6 dnsIp7 31 us2.smtp.mailhostbox.com 208.91.198.143, 49705, 49707, 49717 PUBLIC-DOMAIN-REGISTRYUS United States 14->31 33 api.ipify.org 104.26.13.205, 443, 49704, 49706 CLOUDFLARENETUS United States 14->33 23 C:\Users\user\AppData\Roaming\...\mpTrle.exe, PE32 14->23 dropped 25 C:\Users\user\...\mpTrle.exe:Zone.Identifier, ASCII 14->25 dropped 35 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->35 37 Tries to steal Mail credentials (via file / registry access) 14->37 39 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->39 41 Tries to harvest and steal browser information (history, passwords, etc) 21->41 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd/
Threat name:
Win32.Spyware.Negasteal
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Status:
Malicious
First seen:
2024-03-18 11:07:23 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
21 of 36 (58.33%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wwr6z2vuc7c2x53gpdj4hoyiprfzeozmgkrwebahvqtg4cidbc6q._file
Verdict:
malicious
Label(s):
agenttesla_v4
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agenttesla
Create hunting rule
Similar samples:
04f59143e6d05f2b94cd081c398b7e4dc6ab486fa83e67194b13582faaa8727a
AgentTesla
36fc325a5d6b8766479d0ab84c7cbbde42a55dc2dbb1937c33b0e465497718ab
AgentTesla
7316b0e5c95d1ff17274693f4681e7920d6305079d5833c96acf54d724852651
AgentTesla
73c38b0fbae15628d39515ffbbe8d71aa8b5ff7c6891ec5f8c1f2fc6a1f0210c
AgentTesla
9f3330ef95e0cb6c1926d216d4a4662cd1c9265f3559ee8121a39bdcc2e957bd
AgentTesla
c4e5aef8388a660757a4829a4c1ccb7ee192089fd6c6cfc19231c115911e0bdf
AgentTesla
fc33499486786ea9868b1c8776677eb6dedbe1572464b2070bbe7c5f42c5bacf
AgentTesla
+ 4'842 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/240319-j8z32afe2v/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Unpacked files
SH256 hash:
895acbd2b91fb0de4c28de579e220456f47a9c35934e329162de18845d2a1cc9
MD5 hash:
10016028f5c53d44d0f951f32f3e55a9
SHA1 hash:
411c04966645544fdba777aa7dc3271aa65d906c
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/ebe6dd94-0fe1-409b-8897-68a695c053af/
Parent samples :
322a8fbfb5630161686cee31f6508b0005019b81f56a4af95130d7bafaaf328c
b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd
b21d51bd3eae9c07144b4d2527d732227a775c18e42812eea7a6f3a84c4d3a2d
SH256 hash:
b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd
MD5 hash:
e1a4c35915d41d959fdf286da81afedb
SHA1 hash:
60ef2a2a370ce3855c7b249462dc5584aeba5161
Link:
https://www.unpac.me/results/ebe6dd94-0fe1-409b-8897-68a695c053af/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b5a3eceab417/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/b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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:NETexecutableMicrosoft
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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_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.

Malspam

AgentTesla

Executable exe b5a3eceab417c5abf76678d3c3bb087c4b923b2c32a3620407ac266e090308bd

(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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