MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3
SHA3-384 hash: ab441382ca1152475fd69cb1975270b155c997caadcbcd6e50090cd4dd504a35baea7e2e5ab34c3b04b565464cf15e1c
SHA1 hash: 08865749b07b73a4b09a5ae23686b11f12d1e97b
MD5 hash: 2c55963381999400a31814af76924bf9
humanhash: green-early-vermont-skylark
File name:OOLU2948038399262.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:1'738'752 bytes
First seen:2025-01-21 14:36:48 UTC
Last seen:2025-02-07 14:09:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:ASexfdruzJDcQq/iFLpXq7TYA2rQtlHPI4Hs:dBz9qaFLVQB
TLSH T1B58527043B99CF26D5AF5675E47042B49277ED46EF019BCB2948BE2D3CB37854A00AE3
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
File icon (PE):PE icon
dhash icon 0f519373d9cc750b (107 x AgentTesla, 20 x AveMariaRAT, 5 x Formbook)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
3
# of downloads :
652
Origin country :
US US
Vendor Threat Intelligence
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=678fb3d1b5602ee8cdae8861
Tags:
keylog micro lien remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Enabling the 'hidden' option for analyzed file
Unauthorized injection to a recently created process
Restart of the analyzed sample
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
Enabling the 'hidden' option for recently created files
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:
macros-on-open obfuscated obfuscated
Link:
https://www.filescan.io/uploads/678fb11e8719dfa065e9137d/reports/4e3f9cfc-da68-446c-9b2f-0377f8bcecde/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3
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/559164af-9f0a-438d-be66-62d35d8991ae
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1596012
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
AI detected suspicious sample
Antivirus detection for URL or domain
Connects to many ports of the same IP (likely port scanning)
Contains functionality to log keystrokes (.Net Source)
Drops executable to a common third party application directory
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
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)
Suricata IDS alerts for network traffic
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)
Yara detected AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1596012 Sample: OOLU2948038399262.exe Startdate: 21/01/2025 Architecture: WINDOWS Score: 100 27 s4.serv00.com 2->27 29 api.ipify.org 2->29 49 Suricata IDS alerts for network traffic 2->49 51 Found malware configuration 2->51 53 Malicious sample detected (through community Yara rule) 2->53 55 8 other signatures 2->55 7 OOLU2948038399262.exe 2 2->7         started        10 adobe.exe 2 2->10         started        12 adobe.exe 2 2->12         started        signatures3 process4 signatures5 57 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->57 59 Injects a PE file into a foreign processes 7->59 14 OOLU2948038399262.exe 16 4 7->14         started        19 adobe.exe 2 10->19         started        61 Multi AV Scanner detection for dropped file 12->61 21 adobe.exe 14 2 12->21         started        process6 dnsIp7 31 s4.serv00.com 213.189.52.181, 21, 49703, 49705 ECO-ATMAN-PLECO-ATMAN-PL Poland 14->31 33 api.ipify.org 172.67.74.152, 443, 49699, 49753 CLOUDFLARENETUS United States 14->33 23 C:\Users\user\AppData\Roaming\...\adobe.exe, PE32 14->23 dropped 25 C:\Users\user\...\adobe.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 Drops executable to a common third party application directory 14->39 41 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->41 43 Tries to harvest and steal ftp login credentials 19->43 45 Tries to harvest and steal browser information (history, passwords, etc) 19->45 47 Installs a global keyboard hook 19->47 file8 signatures9
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2025-01-21 13:17:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
28 of 38 (73.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wthjdpntgnx66nbuivaaov2wgwrwajgakdhvqdhfzz6bml4x4djq._file
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla discovery keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/250121-ry5jrsyjgy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Executes dropped EXE
Loads dropped DLL
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
Agenttesla family
Verdict:
Malicious
Tags:
external_ip_lookup
YARA:
n/a
Link:
https://app.threat.zone/submission/cb5bd5c6-a3aa-4437-aea6-415fcf4a7158
Unpacked files
SH256 hash:
45c7b64a55dca23ee1239649e03a7c361813dbcfc2a0817b0d8e94c907d6ed4b
MD5 hash:
fb1bc19121c4e190d83672bc71b493f0
SHA1 hash:
c3488b969ba578e28ee360be24b6416425a224a0
Link:
https://www.unpac.me/results/eb7d8cd5-979e-41fe-8e48-50234692cad7/
SH256 hash:
6948297faa2ce65e2b53e5a1f03fdfab721bc5a91e6191384e03eabf24884e8a
MD5 hash:
8a406afdf62ff78d6bbd8529cd8d9c07
SHA1 hash:
207f71a55bb28fd4ee6a8c31c4ef35683fd3663b
Link:
https://www.unpac.me/results/eb7d8cd5-979e-41fe-8e48-50234692cad7/
SH256 hash:
351cc7473567ade07744f1262e70509704812881afc1390007df40dc5c622b56
MD5 hash:
a0e7f783fd01fd7546bd473c0d9c9021
SHA1 hash:
0c874429eb755c1cc7ca47677397114324dafd19
Detections:
win_agent_tesla_g2
Create hunting rule
Agenttesla_type2
Create hunting rule
INDICATOR_EXE_Packed_GEN01
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Confidential_Data_Store
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_References_Messaging_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_Referenfces_File_Transfer_Clients
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_VaultSchemaGUID
Create hunting rule
MALWARE_Win_AgentTeslaV2
Create hunting rule
Link:
https://www.unpac.me/results/eb7d8cd5-979e-41fe-8e48-50234692cad7/
Parent samples :
b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3
8344985d7cc3ba5ca5a767d9a35adc1d9e8a9c45007f40ba8c802f28a1d0739d
SH256 hash:
b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3
MD5 hash:
2c55963381999400a31814af76924bf9
SHA1 hash:
08865749b07b73a4b09a5ae23686b11f12d1e97b
Link:
https://www.unpac.me/results/eb7d8cd5-979e-41fe-8e48-50234692cad7/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4ce91bdb333/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3

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: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: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 b4ce91bdb3336fef3434454007575635a36024c050cf580ce5ce7c162f97e0d3

(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

Comments