MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357
SHA3-384 hash: 51a5c6f2cec148fc1e53ce42f9d3e99f0a389cc8d89e4d8842a78c86416e8c3679d845a5239d92e6098e078a774e590f
SHA1 hash: 2c61df624258b0886ea76e7b779f92062da9faa6
MD5 hash: 0afc8876c030df9cecbd89d6f59f5b9e
humanhash: washington-mars-august-sodium
File name:RFQ.xlsm.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:708'608 bytes
First seen:2024-04-30 08:12:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:92iNzeWFm+AtXPAWpK2uJVqukrGYPcAXMnEZuTsloKvnmF6em0fT:91tRFm+avLYjkiOcAXiIoKvnmF6e
Threatray 523 similar samples on MalwareBazaar
TLSH T18CE4224057E49F31E6BD4BF6A22841122BF634335791E33A0ED870EF5AD6B149321BA7
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Reporter threatcat_ch
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
373
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357.exe
Verdict:
Malicious activity
Analysis date:
2024-04-30 08:15:31 UTC
Tags:
stealer agenttesla exfiltration
Link:
https://app.any.run/tasks/4c8b4b08-c1ad-4bcb-a3f4-b79fdca2d7db

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
Create hunting rule

Porcupine.Malware.58887.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
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
Setting a keyboard event handler
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/6630a81575339da04fa77f98/reports/44fea1e8-5d60-4637-8f14-e197cbda8475/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ee0c0cfc-e182-4de2-8b34-a56fd539c40b
Result
Threat name:
AgentTesla, PureLog Stealer
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1433933
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.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)
Found malware configuration
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1433933 Sample: RFQ.xlsm.exe Startdate: 30/04/2024 Architecture: WINDOWS Score: 100 66 smtpout.neftis.com 2->66 68 mail.id-net.fr 2->68 70 api.ipify.org 2->70 84 Snort IDS alert for network traffic 2->84 86 Found malware configuration 2->86 88 Malicious sample detected (through community Yara rule) 2->88 90 14 other signatures 2->90 8 RFQ.xlsm.exe 7 2->8         started        12 vitLvescuqqqoo.exe 5 2->12         started        14 MvQHOaQ.exe 2->14         started        16 2 other processes 2->16 signatures3 process4 dnsIp5 56 C:\Users\user\AppData\...\vitLvescuqqqoo.exe, PE32 8->56 dropped 58 C:\Users\user\AppData\Local\...\tmp8065.tmp, XML 8->58 dropped 106 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 8->106 108 Uses schtasks.exe or at.exe to add and modify task schedules 8->108 110 Adds a directory exclusion to Windows Defender 8->110 19 RFQ.xlsm.exe 16 5 8->19         started        24 powershell.exe 23 8->24         started        26 schtasks.exe 1 8->26         started        112 Antivirus detection for dropped file 12->112 114 Multi AV Scanner detection for dropped file 12->114 116 Machine Learning detection for dropped file 12->116 28 vitLvescuqqqoo.exe 12->28         started        30 schtasks.exe 12->30         started        118 Injects a PE file into a foreign processes 14->118 32 MvQHOaQ.exe 14->32         started        36 2 other processes 14->36 60 192.168.2.5, 443, 49640, 49703 unknown unknown 16->60 62 192.168.2.16 unknown unknown 16->62 64 239.255.255.250 unknown Reserved 16->64 34 MvQHOaQ.exe 16->34         started        38 3 other processes 16->38 file6 signatures7 process8 dnsIp9 72 smtpout.neftis.com 178.33.249.251, 49720, 49734, 49735 OVHFR France 19->72 74 api.ipify.org 104.26.12.205, 443, 49707 CLOUDFLARENETUS United States 19->74 52 C:\Users\user\AppData\Roaming\...\MvQHOaQ.exe, PE32 19->52 dropped 54 C:\Users\user\...\MvQHOaQ.exe:Zone.Identifier, ASCII 19->54 dropped 92 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 19->92 94 Tries to steal Mail credentials (via file / registry access) 19->94 96 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->96 98 Loading BitLocker PowerShell Module 24->98 40 conhost.exe 24->40         started        42 WmiPrvSE.exe 24->42         started        44 conhost.exe 26->44         started        46 conhost.exe 30->46         started        76 104.26.13.205, 443, 49732, 49733 CLOUDFLARENETUS United States 32->76 100 Tries to harvest and steal ftp login credentials 34->100 102 Tries to harvest and steal browser information (history, passwords, etc) 34->102 104 Installs a global keyboard hook 34->104 48 conhost.exe 36->48         started        78 www.google.com 142.250.190.68, 443, 49712, 49713 GOOGLEUS United States 38->78 80 plus.l.google.com 142.250.190.78, 443, 49722 GOOGLEUS United States 38->80 82 apis.google.com 38->82 50 conhost.exe 38->50         started        file10 signatures11 process12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2024-04-30 08:13:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=jtk3jxyvko37ef5xdmuuhv5kfcjwyrgm5thnvarjomnlkktgenlq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
0a99db14d49955334e10fe81245fd1f155f4308b6392c17282dbdf7ac2255e12
AgentTesla
8ef48d5d91316d0e61afeb7a330f215d85eca1bfeb63368850e5b3fe0e91f44e
AgentTesla
91b3beabc3244b35f86ad8669b64dc3aeef2b0c646bc93331babc88f5e51687d
AgentTesla
a0256620e6fca3aed48fb36d3d7d798e5d0f790bdfaf93e56a4b9471ade8f7e7
AgentTesla
faf7c5141cc9cf0de0b8ccfa603d97858f1be4f86281705bd34063ff1259d7b3
AgentTesla
+ 513 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/240430-j4earsga77/
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:
0d2d4c43c8df410a8789c3a8d09280cbf5822fa9b1f56107bfb4fa27f3255541
MD5 hash:
a15c772a2874fcee856a996f9452af2d
SHA1 hash:
f1c5ab40dd933a4c4150770526b2e5bb26a57ae6
Link:
https://www.unpac.me/results/7bbeb30f-5393-4e4b-84a7-bd5428571203/
SH256 hash:
bfc8d72b7fbe7f027b70ada30d9dea3d03b15073f442f93c74c19572d4ed7742
MD5 hash:
d7b68b73ac8ea51c84b9574ead8d5d28
SHA1 hash:
9d350b551d4df35d4c73a3cce59c5a02321ae4a4
Link:
https://www.unpac.me/results/7bbeb30f-5393-4e4b-84a7-bd5428571203/
SH256 hash:
b427c64f968819019a80245a517d862258fd7fca2105100b7cff7c5c19864d79
MD5 hash:
d376b9c3f819642aa78e8af2bf291dba
SHA1 hash:
9754c82ea2abd5caf1b48964621ad03280bcf67c
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/7bbeb30f-5393-4e4b-84a7-bd5428571203/
SH256 hash:
8213a6a34c36db37675298dcbbbb36451ddf233c1af7e8783be225d3e4c08271
MD5 hash:
a2f5dafc17432fdea2f85c9c972167ca
SHA1 hash:
004139faa5268e3fd9fcc92710d0e331d32a2d7b
Link:
https://www.unpac.me/results/7bbeb30f-5393-4e4b-84a7-bd5428571203/
SH256 hash:
4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357
MD5 hash:
0afc8876c030df9cecbd89d6f59f5b9e
SHA1 hash:
2c61df624258b0886ea76e7b779f92062da9faa6
Link:
https://www.unpac.me/results/7bbeb30f-5393-4e4b-84a7-bd5428571203/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4cd5b4df1553/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/4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357

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:AgentTesla_DIFF_Common_Strings_01
Create hunting rule
Author:schmidtsz
Description:Identify partial Agent Tesla strings
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

Executable exe 4cd5b4df1553b7f217b71b2943d7aa28936c44ccecceda8229731ab52a662357

(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