MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b. 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: 15


Intelligence 15 IOCs YARA 3 File information Comments
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SHA256 hash: b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b
SHA3-384 hash: 5a6d7041af87196ad9b26761cec936e45146857dac904cbd079d1f0591cd4228e6515a0dc99bb295be57db8a73677b8d
SHA1 hash: 8af50fd7de079cc2c5f68c8529feffa17c03c887
MD5 hash: 3286ca6992473c9b5d8e1de370bf8f50
humanhash: fruit-speaker-early-hot
File name:SecuriteInfo.com.Win32.PWSX-gen.11139.15866
Download: download sample
Signature AgentTesla
Create hunting rule
File size:871'424 bytes
First seen:2023-08-30 11:33:47 UTC
Last seen:2023-08-30 12:28:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 12288:7m5Os9W7p8ioRY4XGuDr74LW/mHalI+IgvtkXP1/p83havzrX6cCCTdMGA:y5O78io+4NDr79OHaWDKeX9/WRcCCeT
Threatray 5'570 similar samples on MalwareBazaar
TLSH T13A05A203BA8789B2C94C173AC59B4C34D370D5817A1BF71A7D8A237958437BA6E4DE0B
TrID 60.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.8% (.SCR) Windows screen saver (13097/50/3)
8.7% (.EXE) Win64 Executable (generic) (10523/12/4)
5.4% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter SecuriteInfoCom
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
291
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
SecuriteInfo.com.Win32.PWSX-gen.11139.15866
Verdict:
Malicious activity
Analysis date:
2023-08-30 11:35:05 UTC
Tags:
agenttesla stealer
Link:
https://app.any.run/tasks/5eaab669-d336-4255-8769-a23164c1f74d

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/445286/
Detection(s):
SecuriteInfo.com.Win32.PWSX-gen.11139.15866.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Creating a file in the %AppData% directory
Launching a process
Creating a file
Using the Windows Management Instrumentation requests
Creating a file in the %AppData% subdirectories
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
80%
Tags:
control lolbin packed
Link:
https://www.filescan.io/uploads/64ef29301d3a8c6c1217eb4a/reports/b7361a50-f210-4ce0-9103-ff5590d7ab96/overview
Verdict:
Malicious
Labled as:
MSILHeracles.Generic
Link:
https://www.hybrid-analysis.com/sample/b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b
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/8d044975-600a-4f84-853d-4b6ecfcedf1d
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
spre.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1300321
Signature
.NET source code contains potential unpacker
Creates multiple autostart registry keys
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sample uses string decryption to hide its real strings
Sigma detected: MSBuild connects to smtp port
Snort IDS alert for network traffic
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1300321 Sample: SecuriteInfo.com.Win32.PWSX... Startdate: 30/08/2023 Architecture: WINDOWS Score: 100 50 Snort IDS alert for network traffic 2->50 52 Found malware configuration 2->52 54 Yara detected AgentTesla 2->54 56 6 other signatures 2->56 6 SecuriteInfo.com.Win32.PWSX-gen.11139.15866.exe 16 5 2->6         started        11 Jnnkox.exe 14 5 2->11         started        13 Jnnkox.exe 2->13         started        15 2 other processes 2->15 process3 dnsIp4 48 files.catbox.moe 108.181.20.35, 443, 49707, 49709 ASN852CA Canada 6->48 34 C:\Users\user\AppData\Roaming\Jnnkox.exe, PE32 6->34 dropped 72 Creates multiple autostart registry keys 6->72 74 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 6->74 76 Writes to foreign memory regions 6->76 17 MSBuild.exe 16 4 6->17         started        78 Multi AV Scanner detection for dropped file 11->78 80 Machine Learning detection for dropped file 11->80 82 Injects a PE file into a foreign processes 11->82 22 MSBuild.exe 3 11->22         started        24 MSBuild.exe 11->24         started        26 MSBuild.exe 13->26         started        28 conhost.exe 15->28         started        30 conhost.exe 15->30         started        file5 signatures6 process7 dnsIp8 36 mail.parivartansandeshfoundation.com 184.168.111.8, 49710, 49714, 49716 AS-26496-GO-DADDY-COM-LLCUS United States 17->36 38 api4.ipify.org 104.237.62.211, 443, 49708, 49719 WEBNXUS United States 17->38 40 api.ipify.org 17->40 32 C:\Users\user\AppData\Roaming\...bJgI.exe, PE32 17->32 dropped 58 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->58 60 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->60 62 May check the online IP address of the machine 17->62 64 Creates multiple autostart registry keys 17->64 42 64.185.227.156, 443, 49711 WEBNXUS United States 22->42 44 api.ipify.org 22->44 46 api.ipify.org 26->46 66 Tries to steal Mail credentials (via file / registry access) 26->66 68 Tries to harvest and steal browser information (history, passwords, etc) 26->68 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 26->70 file9 signatures10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b/
Threat name:
Win32.Trojan.Synder
Create hunting rule
Status:
Malicious
First seen:
2023-08-30 11:34:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
19 of 23 (82.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ws7ysio25xdag2jxas3xd32i5kmvoih2s5ul2yaf4huqfqnuj5vq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
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1b3a82f21226cf22c6b935eeb7ca17fc2c36ec65cbf1f4fc32cc8b79fb3252d8
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39fdc2f771ca4310602321e5d1484b3f8a6ccd4ad93874e1394feda5c72d18b1
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54a5be7cfb6c0e4eb1673fc7d158b93094378a55f403afa84b82604bf06a9d5b
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a073440250210a9a498868af360fb2e9dc8bd35458891a4bad3972c9aa4b4ca7
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a118bad62d2047fe8e2ad0cdb3aee9dd0be8daabd287e72e057531675feec3e8
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c04edaab3f7fd927118d248a63907eb7b7b65af0300266610af6435456ca435d
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c203ce634a1d32ea10fbc654272e1a1e4aaf253a9fc45cc4204c695bab93364b
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c7464a9c462386c00041d6afed11e2204d064bc83bce45275b4496b54c92083d
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fe561cf56cd580b3bb34099feec06059cd9b276a1c07f9316036058d22d661ac
AgentTesla
+ 5'560 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/230830-npep7sbd94/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
AgentTesla
Unpacked files
SH256 hash:
b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b
MD5 hash:
3286ca6992473c9b5d8e1de370bf8f50
SHA1 hash:
8af50fd7de079cc2c5f68c8529feffa17c03c887
Link:
https://www.unpac.me/results/7b7adc57-fa59-49ef-8539-76f465fbfbf6/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b4bf8921daed/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/b4bf8921daedc603693704b771ef48ea995720fa9768bd6005e1e902c1b44f6b

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: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.

Cape
Cape
https://www.capesandbox.com/analysis/445286/

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