MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d. 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


XFilesStealer


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d
SHA3-384 hash: a6ea60d702c7bd16cd86980bcc760570b7888c0eecdc3f9f8f65b463e3ccdbb9398b6a6fafb1c4d55f91edd4a48767f5
SHA1 hash: 934d183b91bae0f72af53aea48afed15016507c7
MD5 hash: 9a06f45dca4a7b2a33d8396668b24a9b
humanhash: cold-saturn-crazy-romeo
File name:558957d6-9173-471a-9d5b-39453e677d3b
Download: download sample
Signature XFilesStealer
Create hunting rule
File size:4'938'240 bytes
First seen:2022-07-16 11:35:40 UTC
Last seen:2022-07-16 12:40:50 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 98304:tnrHztkv8r41Ndr5FCAAa0PqmqQhNTBA+OTLzrxCr:RrJkv/3kdqmqmjA+OJ+
TLSH T1D4364C741148E20DC9BDADB7CDF1C8A5BAFF90C220159CAB91B3446785B6D3734398EA
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon edcdb2b6a2a6a2ab (1 x XFilesStealer, 1 x Formbook)
Reporter KdssSupport
Tags:exe XFilesStealer


Avatar
KdssSupport
Uploaded with API

Intelligence

File Origin
# of uploads :
2
# of downloads :
364
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
S500RAT.exe
Verdict:
Malicious activity
Analysis date:
2022-07-16 07:28:29 UTC
Tags:
evasion trojan
Link:
https://app.any.run/tasks/9dcc7d07-e80a-485b-bb80-957a7a979656

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/291187/
Detection(s):
SecuriteInfo.com.Variant.Tedy.148139.6850.27138.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a process from a recently created file
Creating a file
Creating a window
Using the Windows Management Instrumentation requests
Launching a process
Searching for synchronization primitives
Enabling the 'hidden' option for recently created files
Creating a process with a hidden window
Moving a recently created file
DNS request
Sending an HTTP GET request
Creating a file in the %temp% directory
Searching for the window
Moving a file to the %temp% directory
Modifying an executable file
Sending a UDP request
Changing a file
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Query of malicious DNS domain
Enabling autorun by creating a file
Infecting executable files
Gathering data
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a864ad98-d01c-4254-8131-0e0d46128a7e
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1033696
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Detected unpacking (overwrites its own PE header)
Drops PE files to the document folder of the user
Injects code into the Windows Explorer (explorer.exe)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 666190 Sample: 558957d6-9173-471a-9d5b-394... Startdate: 16/07/2022 Architecture: WINDOWS Score: 100 89 xred.mooo.com 2->89 103 Snort IDS alert for network traffic 2->103 105 Malicious sample detected (through community Yara rule) 2->105 107 Antivirus detection for URL or domain 2->107 109 13 other signatures 2->109 9 558957d6-9173-471a-9d5b-39453e677d3b.exe 8 2->9         started        13 srvhost.exe 2 2->13         started        15 Synaptics.exe 2->15         started        17 2 other processes 2->17 signatures3 process4 file5 73 C:\Users\user\AppData\Roaming\svhost.exe, PE32 9->73 dropped 75 C:\Users\user\AppData\Roaming\srvhost.exe, PE32 9->75 dropped 77 C:\Users\user\AppData\...\WindowsDefend.exe, PE32 9->77 dropped 79 4 other malicious files 9->79 dropped 123 Antivirus detection for dropped file 9->123 125 Detected unpacking (overwrites its own PE header) 9->125 127 Machine Learning detection for dropped file 9->127 19 File Explorer.exe 9->19         started        23 srvhost.exe 3 9->23         started        25 svhost.exe 14 3 9->25         started        30 3 other processes 9->30 28 schtasks.exe 13->28         started        signatures6 process7 dnsIp8 67 C:\Users\user\...\._cache_File Explorer.exe, PE32 19->67 dropped 69 C:\ProgramData\Synaptics\Synaptics.exe, PE32 19->69 dropped 71 C:\ProgramData\Synaptics\RCXA971.tmp, PE32 19->71 dropped 111 Injects code into the Windows Explorer (explorer.exe) 19->111 32 Synaptics.exe 19->32         started        37 ._cache_File Explorer.exe 19->37         started        113 Antivirus detection for dropped file 23->113 115 Multi AV Scanner detection for dropped file 23->115 117 Machine Learning detection for dropped file 23->117 119 Uses schtasks.exe or at.exe to add and modify task schedules 23->119 39 xcopy.exe 2 23->39         started        41 schtasks.exe 1 23->41         started        91 ip-api.com 208.95.112.1, 49770, 49771, 49775 TUT-ASUS United States 25->91 121 May check the online IP address of the machine 25->121 43 conhost.exe 28->43         started        93 192.168.2.1 unknown unknown 30->93 45 WerFault.exe 30->45         started        47 WerFault.exe 30->47         started        file9 signatures10 process11 dnsIp12 81 docs.google.com 142.250.184.238, 443, 49859, 49860 GOOGLEUS United States 32->81 83 freedns.afraid.org 69.42.215.252, 49862, 80 AWKNET-LLCUS United States 32->83 85 xred.mooo.com 32->85 57 C:\Users\user\Documents\AFWAAFRXKO\~$cache1, PE32 32->57 dropped 59 558957d6-9173-471a-9d5b-39453e677d3b.exe, PE32 32->59 dropped 61 C:\Users\user\AppData\Local\...\RCXAB97.tmp, PE32 32->61 dropped 65 4 other malicious files 32->65 dropped 95 Antivirus detection for dropped file 32->95 97 Multi AV Scanner detection for dropped file 32->97 99 Drops PE files to the document folder of the user 32->99 101 Machine Learning detection for dropped file 32->101 49 WerFault.exe 32->49         started        87 ip-api.com 37->87 51 WerFault.exe 37->51         started        63 C:\Users\user\Desktop\srvhost.exe, PE32 39->63 dropped 53 conhost.exe 39->53         started        55 conhost.exe 41->55         started        file13 signatures14 process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d/
Threat name:
Win32.Trojan.Lazy
Create hunting rule
Status:
Malicious
First seen:
2022-07-15 23:35:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hkuzyn7fadnc4c5xvodzyh2qqoprbqibuoxby425udss45qb4aoq._file
Verdict:
malicious
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/220716-nqlj5sccfk/
Behaviour
Creates scheduled task(s)
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Adds Run key to start application
Looks up external IP address via web service
Checks computer location settings
Drops startup file
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
4321ff5fbab8af8ab008a42a6412622e02e8bad632583beb841f9f1770f2e2b9
MD5 hash:
959929790d023dd310c1213173049301
SHA1 hash:
4cbdbef454433e408a41fac862d5315d988c0c52
Link:
https://www.unpac.me/results/f0f367fe-5406-4bf0-a0bb-4b216feb2c6f/
SH256 hash:
8c751b182c88374bcf394d912e27b3ef855ea5a834cb619272c8de7bbc979925
MD5 hash:
3a2dd995c38097a52d377e3931901dd4
SHA1 hash:
c324a8ef201f5c17645ddbde9fb88bae3ece1370
Link:
https://www.unpac.me/results/f0f367fe-5406-4bf0-a0bb-4b216feb2c6f/
SH256 hash:
9d500b069f7431bb29bdaebb3d49387b5d444b9ac80bb6bda7a8f37ae6606795
MD5 hash:
659eb318899a20dbdb56486041d0b1e9
SHA1 hash:
8fa83d4c9c8d056f9e2536b5c7ab04cffd00f81d
Link:
https://www.unpac.me/results/f0f367fe-5406-4bf0-a0bb-4b216feb2c6f/
SH256 hash:
3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d
MD5 hash:
9a06f45dca4a7b2a33d8396668b24a9b
SHA1 hash:
934d183b91bae0f72af53aea48afed15016507c7
Link:
https://www.unpac.me/results/f0f367fe-5406-4bf0-a0bb-4b216feb2c6f/
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/3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d

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
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.

Web download

XFilesStealer

Executable exe 3aa99c37e500da2e0bb7ab879c1f50839f10c101a3ae1c735da0e52e7601e01d

(this sample)

  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/291187/

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