MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b98dfaa625437b4297939c552ad848948f9b83b00dae429a1c1e897355776ab. 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: 13


Intelligence 13 IOCs YARA 3 File information Comments
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SHA256 hash: 4b98dfaa625437b4297939c552ad848948f9b83b00dae429a1c1e897355776ab
SHA3-384 hash: 663f54b88e11ee263cde016efba4f135e52cc13144dcc9c5723aa73319613dcac705c2746c2f6a95096ee8e6732c89ad
SHA1 hash: af091d63cd2ad8f07cc9d506761d5711e73cb2ba
MD5 hash: 0fa269619f0ce9ad1eb596fd6b4bf8a7
humanhash: beer-hot-charlie-nuts
File name:PO_SBK4128332S.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:738'816 bytes
First seen:2021-11-18 14:29:09 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:pLum31gW7ONUs2eCh+q4vd6gW9OfbHkVT0cwzmeSqsFz2qb:wm3KWKNUsdNHcTEzmeS5
TLSH T1D5F4E09036B8C41BE37081BAC1A1D6BA4B70F85C1EE2D6567DDD2ADF7A19760BC24313
File icon (PE):PE icon
dhash icon f062626222222024 (3 x AgentTesla, 1 x NanoCore)
Reporter James_inthe_box
Tags:AgentTesla exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
100
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO_SBK4128332S.exe
Verdict:
Malicious activity
Analysis date:
2021-11-18 15:25:06 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4502931f-0c8b-4550-b441-65f69b73a4eb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Gathering data
Detection(s):
SecuriteInfo.com.Artemis94E5EB9F1122.4572.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/6196636d43e8f62b6698db80/reports/deb403b2-31e1-4d83-9737-14042a150adf/overview
Result
Verdict:
UNKNOWN
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
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/421d7a25-e997-429d-b71b-2459f8a81331
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/892002
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Adds a directory exclusion to Windows Defender
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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 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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 524475 Sample: PO_SBK4128332S.exe Startdate: 18/11/2021 Architecture: WINDOWS Score: 100 52 Found malware configuration 2->52 54 Multi AV Scanner detection for dropped file 2->54 56 Multi AV Scanner detection for submitted file 2->56 58 9 other signatures 2->58 7 PO_SBK4128332S.exe 7 2->7         started        11 TmZaMAa.exe 2 2->11         started        13 TmZaMAa.exe 2->13         started        process3 file4 34 C:\Users\user\AppData\Roaming\fVeleuU.exe, PE32 7->34 dropped 36 C:\Users\user\AppData\Local\...\tmp27D4.tmp, XML 7->36 dropped 38 C:\Users\user\...\PO_SBK4128332S.exe.log, ASCII 7->38 dropped 60 Uses schtasks.exe or at.exe to add and modify task schedules 7->60 62 Adds a directory exclusion to Windows Defender 7->62 15 RegSvcs.exe 2 8 7->15         started        20 powershell.exe 22 7->20         started        22 schtasks.exe 1 7->22         started        24 conhost.exe 11->24         started        26 conhost.exe 13->26         started        signatures5 process6 dnsIp7 40 smtp.mail.ru 94.100.180.160, 49783, 49784, 587 MAILRU-ASMailRuRU Russian Federation 15->40 42 192.168.2.1 unknown unknown 15->42 32 C:\Users\user\AppData\Roaming\...\TmZaMAa.exe, PE32 15->32 dropped 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 15->46 48 Tries to steal Mail credentials (via file / registry access) 15->48 50 4 other signatures 15->50 28 conhost.exe 20->28         started        30 conhost.exe 22->30         started        file8 signatures9 process10
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/4b98dfaa625437b4297939c552ad848948f9b83b00dae429a1c1e897355776ab/
Threat name:
ByteCode-MSIL.Trojan.Taskun
Create hunting rule
Status:
Malicious
First seen:
2021-11-18 14:28:17 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jomn7ktckq33iklzhhcvflmerfeptob3adnoiknbyhujonkxo2vq._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/211118-rt99fsebcl/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Adds Run key to start application
AgentTesla Payload
AgentTesla
Unpacked files
SH256 hash:
40fa8f513c5ae8369d7b81a9a6c88387761075dc7278c7de20846f81c198083c
MD5 hash:
acad3057f22f1f523718129f5004e596
SHA1 hash:
bbba5d55126c2c80608dcffea89c08dcdaad093e
Link:
https://www.unpac.me/results/84232f78-7d09-4714-88c1-13b8b513bde5/
SH256 hash:
cc5c5860e83b708cd158454165cbeb714767119946049de5aa7677685be75c14
MD5 hash:
83cbea4dec6e5b64a85ee9b6f9ff7598
SHA1 hash:
5c1d12b792c32ba73b7bf2634da5e4d9fbcd7d4e
Link:
https://www.unpac.me/results/84232f78-7d09-4714-88c1-13b8b513bde5/
SH256 hash:
819bd9b75fa4f79cd584a7db683ac853b8f3ca754cd2e844d8f3d1706b04df85
MD5 hash:
b2c6b825d1736f08fdf38d6f7c519cf7
SHA1 hash:
4c387a8f2fbec60abac920233ebc897416dbec30
Link:
https://www.unpac.me/results/84232f78-7d09-4714-88c1-13b8b513bde5/
SH256 hash:
4b98dfaa625437b4297939c552ad848948f9b83b00dae429a1c1e897355776ab
MD5 hash:
0fa269619f0ce9ad1eb596fd6b4bf8a7
SHA1 hash:
af091d63cd2ad8f07cc9d506761d5711e73cb2ba
Link:
https://www.unpac.me/results/84232f78-7d09-4714-88c1-13b8b513bde5/
Malware family:
Agent Tesla v3
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/4b98dfaa6254/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/4b98dfaa625437b4297939c552ad848948f9b83b00dae429a1c1e897355776ab

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:pe_imphash
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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.

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/207275/

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