MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2. 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


AteraAgent


Vendor detections: 6


Intelligence 6 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2
SHA3-384 hash: 531e3176611ed420c9e183232e2ddf3b845f147244c94b3e89d7bb0cfc6d232a09a39e1872c9c64106cb98cde6fe2e60
SHA1 hash: 8103cbffd4f7651c32a1cc602f0398027fb3207f
MD5 hash: aba760ec55fdeccb35adb068443feb89
humanhash: virginia-zulu-alaska-oven
File name:Polaristek.msi
Download: download sample
Signature AteraAgent
Create hunting rule
File size:2'752'512 bytes
First seen:2024-02-25 16:20:46 UTC
Last seen:2024-02-25 18:20:43 UTC
File type:Microsoft Software Installer (MSI) msi
MIME type:application/x-msi
ssdeep 49152:g51VAM5R2KAHlcp8qFmmzDza2Rqr+kMdPTEe/pjO8xn+ch/TlOFNOnUI:gPCMr2NMRmk/XeM9TEeRvx+ch/TlAr
Threatray 505 similar samples on MalwareBazaar
TLSH T1AED5232275904439E7FF1A355D3A96A16EBEFE200B70C98E8348751D2EB05C067B6B73
TrID 80.0% (.MSI) Microsoft Windows Installer (454500/1/170)
10.7% (.MST) Windows SDK Setup Transform script (61000/1/5)
7.8% (.MSP) Windows Installer Patch (44509/10/5)
1.4% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter smica83
Tags:apt AteraAgent msi muddywater signed TA450

Code Signing Certificate

Organisation:Atera Networks Ltd
Issuer:DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1
Algorithm:sha256WithRSAEncryption
Valid from:2022-02-17T00:00:00Z
Valid to:2024-03-16T23:59:59Z
Serial number: 067f6047956624a7159961743d819493
Intelligence: 11 malware samples on MalwareBazaar are signed with this code signing certificate
Thumbprint Algorithm:SHA256
Thumbprint: ae0332c3f49817b1e6229e4fad24e8f661650ac20860179fe1309d3288ee39bf
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
127
Origin country :
HU HU
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/477680/
Detection(s):
PUA.Win.File.AteraRemoteAdmin-9942568-0
Create hunting rule

Verdict:
No Threat
Threat level:
  2.5/10
Confidence:
100%
Tags:
expand installer lolbin rundll32 shell32
Link:
https://www.filescan.io/uploads/65db68efe304215defb73280/reports/9f99fb94-83ab-4779-8a0c-8c3c217d7a30/overview
Verdict:
Suspicious
Link:
https://www.hybrid-analysis.com/sample/638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
n/a
Detection:
malicious
Classification:
troj.evad
Score:
60 / 100
Link:
https://www.joesandbox.com/analysis/1398377
Signature
Creates files in the system32 config directory
Multi AV Scanner detection for submitted file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1398377 Sample: Polaristek.msi Startdate: 25/02/2024 Architecture: WINDOWS Score: 60 79 windowsupdatebg.s.llnwi.net 2->79 81 ps.pndsn.com 2->81 83 5 other IPs or domains 2->83 93 Multi AV Scanner detection for submitted file 2->93 95 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 2->95 97 Yara detected Generic Downloader 2->97 9 AteraAgent.exe 26 22 2->9         started        14 msiexec.exe 82 40 2->14         started        16 msiexec.exe 5 2->16         started        signatures3 process4 dnsIp5 85 ps.pndsn.com 54.175.191.204, 443, 49717, 49718 AMAZON-AESUS United States 9->85 87 54.175.191.205, 443, 49744, 49745 AMAZON-AESUS United States 9->87 89 2 other IPs or domains 9->89 59 C:\...\AgentPackageAgentInformation.exe, PE32 9->59 dropped 61 C:\...61ewtonsoft.Json.dll, PE32 9->61 dropped 63 C:\...\Atera.AgentPackage.Common.dll, PE32 9->63 dropped 101 Creates files in the system32 config directory 9->101 18 AgentPackageAgentInformation.exe 9->18         started        21 sc.exe 9->21         started        23 AgentPackageAgentInformation.exe 9->23         started        31 24 other processes 9->31 65 C:\Program Files (x86)\...\AteraAgent.exe, PE32 14->65 dropped 67 C:\Windows\Installer\MSIB009.tmp, PE32 14->67 dropped 69 C:\Windows\Installer\MSIAEB0.tmp, PE32 14->69 dropped 71 7 other files (none is malicious) 14->71 dropped 25 msiexec.exe 14->25         started        27 AteraAgent.exe 5 15 14->27         started        29 msiexec.exe 14->29         started        file6 signatures7 process8 signatures9 91 Creates files in the system32 config directory 18->91 33 conhost.exe 18->33         started        35 conhost.exe 21->35         started        37 conhost.exe 23->37         started        39 net.exe 1 25->39         started        41 taskkill.exe 1 25->41         started        43 rundll32.exe 7 29->43         started        46 conhost.exe 31->46         started        48 conhost.exe 31->48         started        50 22 other processes 31->50 process10 file11 52 conhost.exe 39->52         started        55 net1.exe 1 39->55         started        57 conhost.exe 41->57         started        73 C:\Windows\...\System.Management.dll, PE32 43->73 dropped 75 Microsoft.Deployme...indowsInstaller.dll, PE32 43->75 dropped 77 C:\...\AlphaControlAgentInstallation.dll, PE32 43->77 dropped process12 signatures13 99 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 52->99
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2/
Threat name:
Win32.Trojan.Atera
Create hunting rule
Status:
Malicious
First seen:
2024-02-13 13:40:24 UTC
File Type:
Binary (Archive)
Extracted files:
51
AV detection:
9 of 38 (23.68%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=moghut4dhxev3ovv6cub54b3pwbxatrqwxg4mmdqer24zh77q2ra._file
Verdict:
unknown
Similar samples:
3871a8c00ec780da7a1908d3a7f1de8bfa14bcc9ad6f37fdcf335ea741bd6e1e
AteraAgent
91d9c73b804aae60057aa93f4296d39ec32a01fe8201f9b73f979d9f9e4aea8b
AteraAgent
dd2675e2f6835f8a8a0e65e9dbc763ca9229b55af7d212da38b949051ae296a5
AteraAgent
e51721dc0647f4838b1abc592bd95fd8cb924716e8a64f83d4b947821fa1fa42
AteraAgent
+ 495 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
discovery
Link:
https://tria.ge/reports/240225-ttmt9sff43/
Behaviour
Checks SCSI registry key(s)
Kills process with taskkill
Modifies data under HKEY_USERS
Modifies registry class
Modifies system certificate store
Runs net.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
Uses Volume Shadow Copy service COM API
Enumerates physical storage devices
Checks installed software on the system
Drops file in Program Files directory
Drops file in Windows directory
Executes dropped EXE
Launches sc.exe
Loads dropped DLL
Drops file in System32 directory
Blocklisted process makes network request
Enumerates connected drives
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.31
Link:
https://yomi.yoroi.company/submissions/638c7a4f833dc95dbab5f0a81ef03b7d83704e30b5cdc630702475cc9fff86a2

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_OLE_file_magic_number
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:NET
Create hunting rule
Author:malware-lu

File information

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

  
X
https://twitter.com/k3yp0d/status/1761736544061198704?t=tc1Vp0v5wp9eN6i8raEHNQ&s=19
Cape
Cape
https://www.capesandbox.com/analysis/477680/

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