MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
SHA3-384 hash: 722748cf3e83af5007f398810c6e0329aedbee6e2b174952f23c3419e2085c4b69091d69fc83cbcdd8a5c6b603e95b5d
SHA1 hash: 36058e0927d6a01f59c99ba002e153febdd071d9
MD5 hash: d13070a2b75d39524f75cd80f1cc5279
humanhash: wisconsin-summer-chicken-oven
File name:New RFQ.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:747'520 bytes
First seen:2024-06-05 16:50:02 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'741 x AgentTesla, 19'604 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:qgsJtr6p3liqyJMlksB54oJZnUyAlMB5hQd4DnXmCO1IYPefLnTgFXn:f5OKkW5NnUkjDXHn8oLnTg
Threatray 925 similar samples on MalwareBazaar
TLSH T1B8F4010823F85F21D4BF57B7AAB4921103FAB41AB173E35D9DD261E52C76B804E02B5B
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)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
443
Origin country :
US US
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433.exe
Verdict:
Malicious activity
Analysis date:
2024-06-05 16:52:45 UTC
Tags:
smtp exfiltration stealer agenttesla
Link:
https://app.any.run/tasks/88ac47b4-2e81-4200-906d-8ae20b4b32bf

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.TrojanX-gen.24233.2197.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6660a70931703c6eb9054c58win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Network Static Gensteal Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
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/2075c938-c91b-4a8d-840e-781753e713c2
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1452523
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
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
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1452523 Sample: New RFQ.exe Startdate: 05/06/2024 Architecture: WINDOWS Score: 100 44 us2.smtp.mailhostbox.com 2->44 48 Found malware configuration 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Sigma detected: Scheduled temp file as task from temp location 2->52 54 13 other signatures 2->54 8 New RFQ.exe 7 2->8         started        12 ikeDzhbe.exe 5 2->12         started        signatures3 process4 file5 36 C:\Users\user\AppData\Roaming\ikeDzhbe.exe, PE32 8->36 dropped 38 C:\Users\...\ikeDzhbe.exe:Zone.Identifier, ASCII 8->38 dropped 40 C:\Users\user\AppData\Local\...\tmpF56D.tmp, XML 8->40 dropped 42 C:\Users\user\AppData\...42ew RFQ.exe.log, ASCII 8->42 dropped 56 Writes to foreign memory regions 8->56 58 Allocates memory in foreign processes 8->58 60 Adds a directory exclusion to Windows Defender 8->60 14 vbc.exe 2 8->14         started        18 powershell.exe 23 8->18         started        20 vbc.exe 8->20         started        22 schtasks.exe 1 8->22         started        62 Multi AV Scanner detection for dropped file 12->62 64 Machine Learning detection for dropped file 12->64 66 Injects a PE file into a foreign processes 12->66 24 vbc.exe 2 12->24         started        26 schtasks.exe 1 12->26         started        signatures6 process7 dnsIp8 46 us2.smtp.mailhostbox.com 208.91.198.143, 49708, 49710, 587 PUBLIC-DOMAIN-REGISTRYUS United States 14->46 68 Loading BitLocker PowerShell Module 18->68 28 WmiPrvSE.exe 18->28         started        30 conhost.exe 18->30         started        70 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 20->70 32 conhost.exe 22->32         started        72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 24->72 74 Tries to steal Mail credentials (via file / registry access) 24->74 76 Tries to harvest and steal ftp login credentials 24->76 78 Tries to harvest and steal browser information (history, passwords, etc) 24->78 34 conhost.exe 26->34         started        signatures9 process10
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433/
Threat name:
ByteCode-MSIL.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2024-06-05 08:30:22 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gvkep66bvb5tphj7mmyrpw6ygjzhtr2kequiyigulgmgwirs6qzq._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
agenttesla
Create hunting rule
Similar samples:
031c712370f6c655fdd1e11f2eecae2065106e3f6588415dd9dfb42914e557ec
AgentTesla
355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
AgentTesla
6f4fe5f02ccbea743f38c50e8876c145db647247654ee55031e42682fa8ef6da
AgentTesla
+ 915 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240605-vb9fzsdb73/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
AgentTesla
Unpacked files
SH256 hash:
9e73222c9aa91b037c84df1ff22ee23d596e73536b381f3d4314b50f51133d5b
MD5 hash:
a1c20822add6e4834fe372a62ba5d3cd
SHA1 hash:
573a737baac141c991d114093e6eb8f51bf5f75d
Link:
https://www.unpac.me/results/b09f7cfe-8ea8-4622-b950-47c6a1e12acf/
SH256 hash:
5d32a4ebaee90d86a469c3abed3570a87f104906094dd90c458def372d0df4e4
MD5 hash:
0c1e7bfd692be94880c54b7e431cc871
SHA1 hash:
439e0832d2618281969dc9748167f21a2c1638c6
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/b09f7cfe-8ea8-4622-b950-47c6a1e12acf/
Parent samples :
f1d18359bfd91d436437dc5c6055e5d98f72035655ad421cd66e20cd9c97ea60
355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
b676c17a455c3cbc95167c0e80d07d7364ff8894134edfaa020627ccc5469fab
SH256 hash:
1e296fa27d02853a937d9b38608a5c9d3fc96981aaf50e422deabf47caacf369
MD5 hash:
ae59a35316e92f39b3ed3ce5c880f1ea
SHA1 hash:
1fa4ba713a3ec670a94f9143072ed0fd8e9ef33c
Link:
https://www.unpac.me/results/b09f7cfe-8ea8-4622-b950-47c6a1e12acf/
SH256 hash:
55729815a6ad44739f2af0c7a7096f4153fcc109d440f23d0d609065e96b625e
MD5 hash:
82a8fdab718d8d9c1c82472293a72e3d
SHA1 hash:
042c0d08baf858128d32c01476380e142891456e
Link:
https://www.unpac.me/results/b09f7cfe-8ea8-4622-b950-47c6a1e12acf/
SH256 hash:
355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433
MD5 hash:
d13070a2b75d39524f75cd80f1cc5279
SHA1 hash:
36058e0927d6a01f59c99ba002e153febdd071d9
Link:
https://www.unpac.me/results/b09f7cfe-8ea8-4622-b950-47c6a1e12acf/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/355447fbc1a8/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/355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433

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:Agenttesla_type2
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Agenttesla in memory
Reference:internal research
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: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 355447fbc1a87b379d3f633117dbd8327279c74a24288c20d459986b2232f433

(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