MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc. 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 14 File information Comments
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SHA256 hash: b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc
SHA3-384 hash: 8c95f5d4f68a98569993a071c3d3111deb0c2989513f0cef6929f0005428df4315f59cbf05373d2e256b64386a19c000
SHA1 hash: 91271e52fb321c02ae8d9b6d9c2c3d2838147b11
MD5 hash: f441f8341111e99b63038a003c71a040
humanhash: solar-delta-triple-kitten
File name:SecuriteInfo.com.Win32.PWSX-gen.27771.32547
Download: download sample
Signature AgentTesla
Create hunting rule
File size:696'832 bytes
First seen:2023-11-08 09:20:02 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:mouBVc9lsozDZefXFMVutr3bVdl6MVqns0VV5DuykEmuBoEaWpMMzbTdCN:fuB+7/ZPut9h4n8ykEt2EaQH8
Threatray 1'472 similar samples on MalwareBazaar
TLSH T1AAE401417A988B93F27897F332B0B701137AFAAFA5A6E28DECD522D94536F004D51317
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) (4505/5/1)
File icon (PE):PE icon
dhash icon c018f9ccccf430c4 (16 x AgentTesla, 4 x Formbook)
Reporter SecuriteInfoCom
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
324
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.27771.32547.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Reading critical registry keys
Sending an HTTP GET request
Setting a keyboard event handler
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros-on-open packed
Link:
https://www.filescan.io/uploads/654b52d90adeb0343351f24a/reports/f5d7cf62-f200-4d0e-a7e5-424b4490f3d9/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc
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/100e4f93-2a8a-40a1-ac1b-b7682c60d003
Result
Threat name:
AgentTesla
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1338933
Signature
.NET source code contains potential unpacker
Contains functionality to log keystrokes (.Net Source)
Contains functionality to register a low level keyboard hook
Contains VNC / remote desktop functionality (version string found)
Found malware configuration
Injects a PE file into a foreign processes
Installs a global keyboard hook
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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)
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2023-11-08 09:07:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
26
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wpctt4mjfx4s3aytwf4jo545c2qt6pv6vrqi7phwnkx4mm3cfp6a._file
Verdict:
malicious
Label(s):
agenttesla_v4
Create hunting rule
Similar samples:
1ed0ed4bd16a28f3f5a785b5a86ab688eb46c419f7ab69a745276e7d2db01dbe
AgentTesla
492d35ae61bf2754332de7dff76132ea8156e740300aca527e8a6f014af08bff
AgentTesla
4dc3b04f10fee9d92b2c9fef777679ceba76b7a02b4bba3097480f8d4dab0d4b
AgentTesla
6e158f16f07e8ff0704f797423eee56096fa51306fa8e74ae0034559f9cbe81c
AgentTesla
b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc
AgentTesla
dc5a6c0264dc1bd2b948b6bf82b6912e8d7a8e691f95a2dcac4f7f6f0a5abb1e
AgentTesla
+ 1'462 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/231108-lasx6sgh61/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
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:
d01f3dea3851602ba5a0586c60430d286adf6fcc7e17aab080601a66630606e5
MD5 hash:
579197d4f760148a9482d1ebde113259
SHA1 hash:
cf6924eb360c7e5a117323bebcb6ee02d2aec86d
Link:
https://www.unpac.me/results/4aa4edf1-c027-4f8d-8f07-35b16cca5464/
SH256 hash:
90c7cd196d59c69d79e23dbad34f89e08be1b378c8f65fe2b58c66668fb4aaaa
MD5 hash:
60a52f85cdc5d6c61391f34453302db9
SHA1 hash:
7dc543c15a74514ed1ef97868b3c950a1ce9eb7c
Detections:
AgentTesla
Create hunting rule
win_agent_tesla_g2
Create hunting rule
Link:
https://www.unpac.me/results/4aa4edf1-c027-4f8d-8f07-35b16cca5464/
SH256 hash:
9b7bd3ef2feead373e49463b406e990450145be9e551e8171851770c3aa61f49
MD5 hash:
f5cce887ba5ce870426a69f10c35d693
SHA1 hash:
347b670daa0b3452253aa72a298477042c84684b
Link:
https://www.unpac.me/results/4aa4edf1-c027-4f8d-8f07-35b16cca5464/
SH256 hash:
62757af7ce2dcfe188245dd26d85e233c2ded82311c600c7c8ec83c8c8a071b2
MD5 hash:
804cc8416b7db140f03d251ca3abbf00
SHA1 hash:
1a1160f7db639606a1046b555b08a43035aff960
Link:
https://www.unpac.me/results/4aa4edf1-c027-4f8d-8f07-35b16cca5464/
SH256 hash:
b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc
MD5 hash:
f441f8341111e99b63038a003c71a040
SHA1 hash:
91271e52fb321c02ae8d9b6d9c2c3d2838147b11
Link:
https://www.unpac.me/results/4aa4edf1-c027-4f8d-8f07-35b16cca5464/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b3c539f1892d/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/b3c539f1892df92d8313b17897779d16a13f3ebeac608fbcf66aafc633622bfc

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:INDICATOR_EXE_Packed_GEN01
Create hunting rule
Author:ditekSHen
Description:Detect packed .NET executables. Mostly AgentTeslaV4.
Rule name:INDICATOR_KB_ID_Infostealer
Create hunting rule
Author:ditekshen
Description:Detects exfiltration email addresses correlated from various infostealers. The same email may be observed in multiple families.
Reference:https://github.com/ditekshen/is-wos
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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Comments