MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
SHA3-384 hash: 623758dd6fd0b6d35c00b30c9558210a193ff12605a19fbc28f3e7576d9426c2e057dd5ae496af04a87a9390a42c2683
SHA1 hash: eb7d2554b1a38da763b94177f6272a86c35b1d0d
MD5 hash: af7969ad9402eed625d7062c487c6f66
humanhash: ohio-table-georgia-jersey
File name:image004.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:768'000 bytes
First seen:2024-05-21 09:13:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:5zvxn6yWn7fcpVZlu/6uHl8XdpxC8wmkSgIYBo9u9xm5TdgWgegPgy/g52w8BLvm:Zxn698VVYl4PCVogIY0Qm9dg0gIyYsp6
Threatray 1'586 similar samples on MalwareBazaar
TLSH T1C3F423A16FE58B31D05C477ABA6C023057F3EA0BA559FB5D0DC698EF8843FA0C146A17
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon f0ccece8e0e8ccf0 (2 x AgentTesla, 1 x RemcosRAT, 1 x AsyncRAT)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
346
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8.exe
Verdict:
Malicious activity
Analysis date:
2024-05-21 09:14:46 UTC
Tags:
evasion
Link:
https://app.any.run/tasks/1ee2b91e-8109-4494-97c4-1da916e2f270

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.26608.5457.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Tags:
Banker Encryption Execution Network Crypt Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
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
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending an HTTP GET request
Reading critical registry keys
Sending a custom TCP request
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:
packed
Link:
https://www.filescan.io/uploads/664c65dcd5c40bffee644a95/reports/33483209-eb6d-47f3-ad13-f0594c551cd5/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
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/7fa8ab32-51c0-495d-9b0d-a85b5951145e
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1444836
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Check if machine is in data center or colocation facility
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to harvest and steal ftp login credentials
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
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1444836 Sample: image004.exe Startdate: 21/05/2024 Architecture: WINDOWS Score: 100 34 mail.bonnyriggdentalsurgery.com.au 2->34 36 ip-api.com 2->36 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Antivirus / Scanner detection for submitted sample 2->46 48 11 other signatures 2->48 8 image004.exe 16 7 2->8         started        13 WWDyYT.exe 3 2->13         started        signatures3 process4 dnsIp5 38 mail.bonnyriggdentalsurgery.com.au 192.254.225.166, 49707, 587 UNIFIEDLAYER-AS-1US United States 8->38 40 ip-api.com 208.95.112.1, 49706, 80 TUT-ASUS United States 8->40 30 C:\Users\user\AppData\Roaming\WWDyYT.exe, PE32 8->30 dropped 32 C:\Users\user\AppData\Local\Temp\tmpE1.tmp, XML 8->32 dropped 50 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 8->50 52 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->52 54 Tries to steal Mail credentials (via file / registry access) 8->54 62 5 other signatures 8->62 15 powershell.exe 23 8->15         started        18 powershell.exe 23 8->18         started        20 schtasks.exe 1 8->20         started        56 Antivirus detection for dropped file 13->56 58 Multi AV Scanner detection for dropped file 13->58 60 Machine Learning detection for dropped file 13->60 file6 signatures7 process8 signatures9 64 Loading BitLocker PowerShell Module 15->64 22 conhost.exe 15->22         started        24 WmiPrvSE.exe 15->24         started        26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-05-20 22:47:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zgnll7me7whe5oklzhksdeqeqhx73exhttjyh6hoa7auk74mh7ea._file
Verdict:
malicious
Similar samples:
34920a90105dca3971cbd0871a0f34203c6b398197b8239eba454d502100f9ee
AgentTesla
4fb48e8fd54c7dba1422489d3312e5c0bde0f8e4d375103c28160403624afabf
AgentTesla
866de3bdc1cc207c818212511641cdf5e6220f304619a26b5e9cb2d2b9c8a309
AgentTesla
b5372cebf5de722e79a9b485984192eb87f6ad78eb2bdd725ae4521c90c0ddac
AgentTesla
c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
AgentTesla
+ 1'576 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240521-k7a8ysfh42/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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
Command and Scripting Interpreter: PowerShell
AgentTesla
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4a396949-d308-445e-8137-17e3c0191822
Unpacked files
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/aa91ed30-896b-4fe3-b6f7-bb567a145b38/
SH256 hash:
3529dfb6de216d98804dfb1ff8863fb624d8f59ce154a2f73b914b87df45546f
MD5 hash:
be764b29e67e778943ad1f4f054f916b
SHA1 hash:
5e53fc49b000ae2ec2e247778c1427da9bec3f35
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_SUSPICIOUS_EXE_SandboxHookingDLL
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/aa91ed30-896b-4fe3-b6f7-bb567a145b38/
Parent samples :
c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
af852fa71e4e2979b288920a1144bc6fdeaf4b47747e6a18a457f1242ab8f7cd
167a7a33c321ff9bf91a313c19edb14c195c34662c465560a868e6d2d8f214ad
SH256 hash:
a3e4c9296c7b64ff53142ad5b81ba73284386f4fb15443b7886389a31517eaca
MD5 hash:
7012caf0c267f5606856fc90fb6eb92c
SHA1 hash:
40b3c0737a7b661cd0c4af0a60812d731e404697
Link:
https://www.unpac.me/results/aa91ed30-896b-4fe3-b6f7-bb567a145b38/
SH256 hash:
27ddc96465ac70b602e730ca4b28018a2875f5aca4215f3d8608b9defc8bf23d
MD5 hash:
1b2614489be216f14010dea5dee50dc5
SHA1 hash:
046c2462662dc3adea1c79121b4d865665850e23
Link:
https://www.unpac.me/results/aa91ed30-896b-4fe3-b6f7-bb567a145b38/
SH256 hash:
c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8
MD5 hash:
af7969ad9402eed625d7062c487c6f66
SHA1 hash:
eb7d2554b1a38da763b94177f6272a86c35b1d0d
Link:
https://www.unpac.me/results/aa91ed30-896b-4fe3-b6f7-bb567a145b38/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/c99ab5fd84fd/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/c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8

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 c99ab5fd84fd8e4eb94bc9d521920481effd92e79cd383f8ee07c1457f8c3fc8

(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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