MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a
SHA3-384 hash: 0e80e2bd76fcd094ae39222023ff0bd3895f765f553a69c6e31f41093f929cc7be51c8ab9d4c1e0c8e92585658f46737
SHA1 hash: 0d0dae381fee5fcd4c01f0a7ebde0f4585144f27
MD5 hash: 52e82226b7aa762bf8b2e95fa4e0d390
humanhash: snake-virginia-edward-early
File name:WHL050C538369.exe
Download: download sample
Signature AgentTesla
Create hunting rule
File size:313'758 bytes
First seen:2023-06-20 07:23:49 UTC
Last seen:2023-06-26 08:02:06 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 61259b55b8912888e90f516ca08dc514 (1'059 x Formbook, 741 x AgentTesla, 427 x GuLoader)
ssdeep 6144:pYa6wX458ZyyyHUY4kiRuFL5ebkDp0YZRI1IuP6KaLd3VIGCO0XjzsirSyYQa+zq:pYC45jnUYoqLuYZW1XC3LMO0Tzij+q
Threatray 3'906 similar samples on MalwareBazaar
TLSH T18F641299A3E4C4EFCE858AB25D7E07BA1EF1C440149E5A0F53904F0A3E769519C1F7B2
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 64f4d4d4ecf4d4d4 (82 x SnakeKeylogger, 34 x AgentTesla, 24 x Formbook)
Reporter cocaman
Tags:AgentTesla exe Shipping

Intelligence

File Origin
# of uploads :
3
# of downloads :
283
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
WHL050C538369.exe
Verdict:
Malicious activity
Analysis date:
2023-06-20 07:30:26 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/98eb4054-7066-44a2-9890-021de28c3bab

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XorStringsNET
Create hunting rule
Link:
https://www.capesandbox.com/analysis/400909/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.22777.7001.3617.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% directory
Creating a window
Creating a file
Creating a file in the %AppData% subdirectories
Unauthorized injection to a recently created process
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Stealing user critical data
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6491541673cb23e4dbf7e1ac/reports/686a1349-afe1-4fb2-9239-95ed03944032/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a
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/bc5b42db-9374-42bc-b107-2365408867fd
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1257977
Signature
Creates multiple autostart registry keys
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Maps a DLL or memory area into another process
May check the online IP address of the machine
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)
Sample uses string decryption to hide its real strings
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 890998 Sample: WHL050C538369.exe Startdate: 20/06/2023 Architecture: WINDOWS Score: 100 44 Found malware configuration 2->44 46 Multi AV Scanner detection for dropped file 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 3 other signatures 2->50 6 WHL050C538369.exe 1 21 2->6         started        10 bplu.exe 19 2->10         started        12 bplu.exe 19 2->12         started        process3 file4 22 C:\Users\user\AppData\Roaming\...\bplu.exe, PE32 6->22 dropped 24 C:\Users\user\AppData\Local\...\ngdxtd.dll, PE32 6->24 dropped 52 Detected unpacking (changes PE section rights) 6->52 54 Detected unpacking (creates a PE file in dynamic memory) 6->54 56 Detected unpacking (overwrites its own PE header) 6->56 58 Creates multiple autostart registry keys 6->58 14 WHL050C538369.exe 17 3 6->14         started        26 C:\Users\user\AppData\Local\...\ngdxtd.dll, PE32 10->26 dropped 60 Multi AV Scanner detection for dropped file 10->60 62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 10->62 64 May check the online IP address of the machine 10->64 66 Machine Learning detection for dropped file 10->66 18 bplu.exe 14 2 10->18         started        28 C:\Users\user\AppData\Local\...\ngdxtd.dll, PE32 12->28 dropped 68 Maps a DLL or memory area into another process 12->68 20 bplu.exe 2 12->20         started        signatures5 process6 dnsIp7 30 api4.ipify.org 104.237.62.211, 443, 49708, 49712 WEBNXUS United States 14->30 32 smtp.gmail.com 142.250.102.108, 49710, 49713, 587 GOOGLEUS United States 14->32 34 api.ipify.org 14->34 70 Creates multiple autostart registry keys 14->70 36 64.185.227.155, 443, 49709 WEBNXUS United States 18->36 38 142.250.102.109, 49711, 587 GOOGLEUS United States 18->38 40 api.ipify.org 18->40 42 api.ipify.org 20->42 72 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 20->72 74 Tries to steal Mail credentials (via file / registry access) 20->74 76 Tries to harvest and steal browser information (history, passwords, etc) 20->76 signatures8
Detection:
agenttesla
Create hunting rule
Link:
https://mwdb.cert.pl/sample/ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a/
Threat name:
Win32.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2023-06-19 23:40:35 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
18 of 37 (48.65%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=56deqezraaonisl4wikmb4fw4xiyb3n4g7wz47twec4fglgcf5fa._file
Verdict:
malicious
Label(s):
agenttesla
Create hunting rule
Similar samples:
0cc8d93630b4068b0b72119c061925754274478463014d05696a34603f88eaf7
AgentTesla
60221fe8c0c8b95270816c5f36f3e5c0f01cede1c822a7d7a115189dc78a0cb5
AgentTesla
6d731cdb770865654178d35ddd42ed30c749311de73924037707997e363e0bb0
AgentTesla
7ca4331b53cb649259648314c7e8eb267cfba6d16fdbc58273fd1005584f4b91
AgentTesla
c10c5389ff2136ba1c998b3d68e57c85aee9f83440cc06ca872135d354a3ab6d
AgentTesla
+ 3'896 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/230620-h8ddlabh4y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
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
Looks up external IP address via web service
Loads dropped DLL
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:
ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a
MD5 hash:
52e82226b7aa762bf8b2e95fa4e0d390
SHA1 hash:
0d0dae381fee5fcd4c01f0a7ebde0f4585144f27
Link:
https://www.unpac.me/results/0239f1f7-5975-4bcd-a7ed-3f63fa9e3fcb/
Malware family:
AgentTesla.v4
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ef8648133100/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/ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:MSIL_SUSP_OBFUSC_XorStringsNet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
Reference:https://github.com/dr4k0nia/yara-rules
Rule name:msil_susp_obf_xorstringsnet
Create hunting rule
Author:dr4k0nia
Description:Detects XorStringsNET string encryption, and other obfuscators derived from it
Rule name:pe_imphash
Create hunting rule
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

Malspam

AgentTesla

zip 10fbec3608285f591c1432e5bbf7d21520568981ccf9ebf2fa4d3eb3c7923f0d

AgentTesla

Executable exe ef86481331001cd4497cb214c0f0b6e5d180edbc37ed9e7e7620b8532cc22f4a

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 10fbec3608285f591c1432e5bbf7d21520568981ccf9ebf2fa4d3eb3c7923f0d
Cape
Cape
https://www.capesandbox.com/analysis/400909/
  
Dropped by
MD5 81841b9abd1f0fb0076edb9e57158963

Comments