MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c. 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: 20


Intelligence 20 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c
SHA3-384 hash: b0796b2af4645e9571eff1db1d70bc4c8a92c3f4e8aad49a33525c56f43b5b0bf06bc2c6fa93efed5cf7f3f6f2c4df8b
SHA1 hash: 842a457a15cd9b35c930e86aa3adca801231c0c9
MD5 hash: b78a41cfedbd72be9cda0c2e8b456b9b
humanhash: zulu-echo-iowa-oregon
File name:PO76389.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:871'936 bytes
First seen:2024-06-03 09:50:10 UTC
Last seen:2024-06-10 10:45:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'606 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:PMYeaky/Qa0KP1x+kPwu9JaGYd89Lt/rFfaolj2YqEvlw7KZNy6XXSJFY/SYwkiN:PMYej0N5iYKR6XXSvY/STixHu9Iif
Threatray 716 similar samples on MalwareBazaar
TLSH T1D805DF04F3A83E9BD67B48F98134911847F5B986649FD2CC5CC074DE8EE6B510BA326B
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 cca6032939292d92 (16 x AgentTesla, 8 x Formbook, 2 x Loki)
Reporter adrian__luca
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
340
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c.exe
Verdict:
Malicious activity
Analysis date:
2024-06-03 10:18:03 UTC
Tags:
evasion stealer agenttesla exfiltration smtp
Link:
https://app.any.run/tasks/58a9438d-881f-4b32-9bdc-95c051cbc5eb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.2420.5982.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=665db4ea27f38492c16fed6fwin7simulatehigh_evasion
Tags:
Malware
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Reading critical registry keys
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:
packed vbnet
Link:
https://www.filescan.io/uploads/665d920bef9fdf64aa6685b0/reports/bee0a425-7acc-47bc-a6d3-8b34f17bc3b8/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c
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/b3165e7d-ddf8-418f-aa2c-93dda75ea909
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1450946
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
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
Installs a global keyboard hook
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)
Snort IDS alert 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
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1450946 Sample: PO76389.exe Startdate: 03/06/2024 Architecture: WINDOWS Score: 100 29 psgrasa.ir 2->29 31 mail.psgrasa.ir 2->31 33 api.ipify.org 2->33 51 Snort IDS alert for network traffic 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 10 other signatures 2->57 7 PO76389.exe 3 2->7         started        10 YxAesh.exe 3 2->10         started        12 YxAesh.exe 2 2->12         started        signatures3 process4 signatures5 59 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 7->59 61 Injects a PE file into a foreign processes 7->61 14 PO76389.exe 16 5 7->14         started        63 Antivirus detection for dropped file 10->63 65 Multi AV Scanner detection for dropped file 10->65 67 Machine Learning detection for dropped file 10->67 19 YxAesh.exe 14 2 10->19         started        21 YxAesh.exe 10->21         started        23 YxAesh.exe 12->23         started        process6 dnsIp7 35 psgrasa.ir 185.10.73.42, 49708, 49712, 587 IRANHOST-ASIR Iran (ISLAMIC Republic Of) 14->35 37 api.ipify.org 172.67.74.152, 443, 49706, 49711 CLOUDFLARENETUS United States 14->37 25 C:\Users\user\AppData\Roaming\...\YxAesh.exe, PE32 14->25 dropped 27 C:\Users\user\...\YxAesh.exe:Zone.Identifier, ASCII 14->27 dropped 39 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 14->39 41 Tries to steal Mail credentials (via file / registry access) 14->41 43 Hides that the sample has been downloaded from the Internet (zone.identifier) 14->43 45 Tries to harvest and steal ftp login credentials 23->45 47 Tries to harvest and steal browser information (history, passwords, etc) 23->47 49 Installs a global keyboard hook 23->49 file8 signatures9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-06-03 01:53:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
16 of 38 (42.11%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wq4bhupfs6qggp6ine6vsilirkfrrhh5y3du7wrc4qwcv35de4ga._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0d89f9c07d7604f3ca0f4949f17613d6b09a8445b8459e4fd57f0e10fe465ed0
AgentTesla
14a79ce3f46a8cb58c98cfb730a841bf02ba8a62f4d90ae7cc77c6cab5e23aa3
AgentTesla
27fd2ef620c481f51dfa374bcc896396f2afcf809f1d5733c49aa1dbd59989d7
AgentTesla
aadb33b16813d11fedf84427622b20fe6381534a5ab973adb309e05b5b7be182
AgentTesla
d46dd8b1ef453a087501831daa8ceddd875ad06a7f13ad06181f61f92e89d96a
AgentTesla
+ 706 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/240603-lvhb6sbg95/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
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
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/465efcbf-0f4a-43b3-b4e9-7b32242b223d
Unpacked files
SH256 hash:
8ead19cda85bb8776a3012131804cb9d4490446d43fc50c9d9929f12363d2baa
MD5 hash:
be7b396a0b024aff3c54de19e3b5dfcb
SHA1 hash:
fa2c0492bf50f6f279a6064cd55fb06e690bb75f
Link:
https://www.unpac.me/results/44758db3-6376-4dd8-98b7-32fe949ee495/
SH256 hash:
b3dcf1a08b32e8cf4a59785a0a5fa42b450270d47a5640af6b0daeed2b189c0a
MD5 hash:
3f42c221d1e94609b576ba34b8e8d51f
SHA1 hash:
af3f34b2ac1e0e9e12e8f97d6a856a6040ba9f81
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/44758db3-6376-4dd8-98b7-32fe949ee495/
Parent samples :
b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c
48c7311341af01dfa4d01d6000fb17d6956d6607f2714bb88bba2f8ca0a93fbc
SH256 hash:
568e822792c9d64924ab85fd7f9be59135dff72d9b6029c3d42fc75a0d84a4e5
MD5 hash:
8ce2ff6eeb2882f49cdd3f6454948ee6
SHA1 hash:
787f2d3f839aa505997e0ae880710d868519bf0c
Link:
https://www.unpac.me/results/44758db3-6376-4dd8-98b7-32fe949ee495/
SH256 hash:
988fa18fb62f518edc9e6c62584edbae8112a84b46c717ecf80771cf7baaedca
MD5 hash:
b8ca4ec10e72865771dd8bcc5967a6bf
SHA1 hash:
588a945648ef1bbb1f34ab9fde8f667ef6d4ed59
Link:
https://www.unpac.me/results/44758db3-6376-4dd8-98b7-32fe949ee495/
SH256 hash:
b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c
MD5 hash:
b78a41cfedbd72be9cda0c2e8b456b9b
SHA1 hash:
842a457a15cd9b35c930e86aa3adca801231c0c9
Link:
https://www.unpac.me/results/44758db3-6376-4dd8-98b7-32fe949ee495/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b43813d1e597/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/b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c

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 b43813d1e597a0633fc8693d5921688a8b189cfdc6c74fda22e42c2aefa3270c

(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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