MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5. 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 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5
SHA3-384 hash: 3303819b00c155eed41ce6317fac04d5d7358bfc003a1eb7d35842ed8f9bdfe115e68b1cbc492ca507d9cb579183e19b
SHA1 hash: 5e20a5dc5c80daa00ca05b9ce8a08a19c3b8b263
MD5 hash: 41b141362972c5b724fea74dbf61e3fb
humanhash: nuts-oscar-triple-cola
File name:Purchase Order PDF.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:765'952 bytes
First seen:2024-04-18 06:56:33 UTC
Last seen:2024-04-18 07:25:46 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 12288:fIWK/pbMSRwwAF8cw+y6FCzhgPwgHnY7+yAVI0NSkmgj2qqnMQljSzZkWm19t:QWiMSg8W9PwgjyAVIcbmgj2aQlmzSp
Threatray 661 similar samples on MalwareBazaar
TLSH T187F4232536BE9B36D8792BF701790540A3F068AB1423E24D8EC155DD8EA2785EF847F3
TrID 61.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.1% (.SCR) Windows screen saver (13097/50/3)
8.9% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon e8d4aab2aa8eccd4 (8 x AgentTesla, 6 x Formbook, 1 x Loki)
Reporter cocaman
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
336
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5.exe
Verdict:
Malicious activity
Analysis date:
2024-04-18 06:59:03 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/4441cd22-1239-4b90-9459-a82e84040a8a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
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
Moving a file to the Program Files subdirectory
Replacing files
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/6620c44075339da04f9590ca/reports/31a5da9c-9842-4e00-bbb5-e5c49c1de272/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5
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/487461a3-3647-45f8-a723-b53fc1f24479
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1427828
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Contains functionality to log keystrokes (.Net Source)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
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)
Sigma detected: Potentially Suspicious PowerShell Child Processes
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1427828 Sample: Purchase Order PDF.exe Startdate: 18/04/2024 Architecture: WINDOWS Score: 100 64 mail.flexwelltour.com 2->64 66 flexwelltour.com 2->66 68 api.ipify.org 2->68 74 Malicious sample detected (through community Yara rule) 2->74 76 Antivirus / Scanner detection for submitted sample 2->76 78 Sigma detected: Scheduled temp file as task from temp location 2->78 80 12 other signatures 2->80 8 Purchase Order PDF.exe 7 2->8         started        12 EpJgjhbkk.exe 5 2->12         started        14 BjTxJte.exe 2->14         started        16 BjTxJte.exe 2->16         started        signatures3 process4 file5 60 C:\Users\user\AppData\RoamingpJgjhbkk.exe, PE32 8->60 dropped 62 C:\Users\user\AppData\Local\...\tmp42D6.tmp, XML 8->62 dropped 98 Adds a directory exclusion to Windows Defender 8->98 100 Injects a PE file into a foreign processes 8->100 18 Purchase Order PDF.exe 16 5 8->18         started        23 powershell.exe 23 8->23         started        35 4 other processes 8->35 102 Antivirus detection for dropped file 12->102 104 Multi AV Scanner detection for dropped file 12->104 106 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 12->106 25 EpJgjhbkk.exe 12->25         started        27 schtasks.exe 12->27         started        108 Machine Learning detection for dropped file 14->108 29 BjTxJte.exe 14->29         started        31 schtasks.exe 14->31         started        33 BjTxJte.exe 16->33         started        37 2 other processes 16->37 signatures6 process7 dnsIp8 70 api.ipify.org 104.26.13.205, 443, 49707, 49711 CLOUDFLARENETUS United States 18->70 72 flexwelltour.com 94.199.200.238, 49710, 49712, 49722 AEROTEK-ASTR Turkey 18->72 56 C:\Users\user\AppData\Roaming\...\BjTxJte.exe, PE32 18->56 dropped 58 C:\Users\user\...\BjTxJte.exe:Zone.Identifier, ASCII 18->58 dropped 82 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 18->82 84 Tries to steal Mail credentials (via file / registry access) 18->84 86 Hides that the sample has been downloaded from the Internet (zone.identifier) 18->86 88 Uses schtasks.exe or at.exe to add and modify task schedules 23->88 90 Loading BitLocker PowerShell Module 23->90 39 conhost.exe 23->39         started        92 Installs a global keyboard hook 25->92 42 conhost.exe 27->42         started        44 conhost.exe 31->44         started        94 Tries to harvest and steal browser information (history, passwords, etc) 33->94 46 WmiPrvSE.exe 35->46         started        48 conhost.exe 35->48         started        50 conhost.exe 35->50         started        52 schtasks.exe 1 35->52         started        54 conhost.exe 37->54         started        file9 signatures10 process11 signatures12 96 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 39->96
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5/
Threat name:
ByteCode-MSIL.Trojan.Barys
Create hunting rule
Status:
Malicious
First seen:
2024-04-18 03:12:46 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
21 of 24 (87.50%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qybukxvv5s2ngzuedhcd3ncqj3p4rypnzks7azoxqms626unq3cq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
0cdb3ae7d110a3e4118af8ad502151685e3e212bd6124b52ddfa21c1f128f5e1
AgentTesla
551548dd1d1dd87d5231716f0f2003c0ee561f9a2ef7269cdf6534b96b02f465
AgentTesla
5dda5302383b5a1677891f2bcb1da4876634f20c6cbecd2ec9a5e63a24fd5cdd
AgentTesla
88989d52aae6ee018cab2afb8bfd712a29177ee9e20365d6b228a25828c25ee8
AgentTesla
ec20774a0a999b7f231404214662eda2697ea5dcee82139d22430e7f06e47792
AgentTesla
+ 651 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/240418-hqxphsfd7y/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
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:
1c633f39a192f108f755e0bcf412e8489ad80781f3b7807c80892deb2526ff0d
MD5 hash:
e4b5d57e9e46a4e76075b5b92f71577f
SHA1 hash:
d76dc165724148193c6911cc75fc62c198737d3a
Link:
https://www.unpac.me/results/c5202d82-6085-4fb5-b151-1ade5ff92f7d/
Parent samples :
d89ea6a01347b82f963ed7960583e5d76c6a07e91852fae83bc290e0f64a06b2
3f700fd41c6cca501d50cc2f62afd8e0d951efc1a918aa65ab3e84ee563ff1d6
SH256 hash:
b91db27e714ca7269176ba622b253ba1fb936ecdffdbfc6b96930473b6416214
MD5 hash:
aa3cb91e8573d5ac992361ec1ef7e579
SHA1 hash:
d263656bbd117442625768909e4c7ccf00aab860
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/c5202d82-6085-4fb5-b151-1ade5ff92f7d/
Parent samples :
40bb8b7b9fec345f4aa54b05cc02fa42b404b9de341e07f7c6d7a0c1a1d801ff
20524ab9c6ee331864f6451f2b8f24d7fd321f5ba656ea4079deacdd51702891
8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5
cb06339a87bdd6284086a97545c32dc8a3eb3701c7642543e7c327d0539005f9
e67c69055ea1d00cf415d8e67faa2460972ec03a0b49954f085f7741c101d298
SH256 hash:
c7503696de04b1e1dc6a8ad57969a52e00b81390f6729bc05f5b302a820246ce
MD5 hash:
dfb8e47c94b650047991bd2d015cebdc
SHA1 hash:
309a5153dcaeff54fd6c442cd309eb3b7c8a1d82
Link:
https://www.unpac.me/results/c5202d82-6085-4fb5-b151-1ade5ff92f7d/
SH256 hash:
baa0bda022a64970c5be7e975198d5dd8229901e827b2bda8ed277c53e9fb950
MD5 hash:
1efe8c9276f935bf051c72a80a02d2c8
SHA1 hash:
13a1f62d3ad9375ca328ce8e393e4e235226bc3c
Link:
https://www.unpac.me/results/c5202d82-6085-4fb5-b151-1ade5ff92f7d/
SH256 hash:
8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5
MD5 hash:
41b141362972c5b724fea74dbf61e3fb
SHA1 hash:
5e20a5dc5c80daa00ca05b9ce8a08a19c3b8b263
Link:
https://www.unpac.me/results/c5202d82-6085-4fb5-b151-1ade5ff92f7d/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8603455eb5ec/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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: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: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
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

rar 6ae256533d1ffa18d81da6ba75400092ecd8c01c38c6a4a114fc895d781847ca

AgentTesla

Executable exe 8603455eb5ecb4d3668419c43db4504edfc8e1edcaa5f065d78325ed7a8d86c5

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 6ae256533d1ffa18d81da6ba75400092ecd8c01c38c6a4a114fc895d781847ca
  
Dropped by
MD5 6a5bae0e89bfa56e15b6654ef89f5fb8

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