MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19. 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


AsyncRAT


Vendor detections: 19


Intelligence 19 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
SHA3-384 hash: 669dde93429dd62d215381de3f841459523ca2a9453a95b0bff6f67518ac3a1f7e861aaf4d569d4439b31ddb9926733f
SHA1 hash: ca6d3865d17265d94ff4af4f7851650244ae34bc
MD5 hash: 780797d9ab0c3bceb7d50a30fc3de50e
humanhash: east-red-carbon-six
File name:ProxyLoader.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:1'768'448 bytes
First seen:2025-06-26 18:25:59 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 49152:jLomO28nxkWIAbETHa1hGVr3L/9+WORpbsBLn5FRWTe/Iel:GlnxHHbETHa123L1+/sBzRWL
Threatray 78 similar samples on MalwareBazaar
TLSH T16585332465C83D86E8213B3544B33283953F89B66A3C6A5ED86F85862CF5487F345B3F
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter burger
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
453
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ProxyLoader.exe
Verdict:
Malicious activity
Analysis date:
2025-06-26 18:28:42 UTC
Tags:
auto-sch xworm auto-startup auto-reg crypto-regex
Link:
https://app.any.run/tasks/b665fa77-8a3d-48ff-bb97-264df0413a85

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
XWorm
Create hunting rule
Link:
https://www.capesandbox.com/analysis/11276/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.2595.24194.12143.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=685d9105b06783b9ebd84e66
Tags:
asyncrat autorun
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Creating a file
Creating a process from a recently created file
Creating a file in the %temp% directory
Creating a window
Creating a file in the system32 subdirectories
Unauthorized injection to a recently created process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 entropy obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/685d91d48cd0d23e5be876f7/reports/1d7c9e44-c59c-4416-87b9-8a81585a45c2/overview
Verdict:
Malicious
Labled as:
Ransom.Loki.Generic
Link:
https://www.hybrid-analysis.com/sample/4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/445f6b3a-2bc8-4e4e-aac7-de82b50a2ddb
Result
Threat name:
Quasar, XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1723688
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Bypasses PowerShell execution policy
C2 URLs / IPs found in malware configuration
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files to the user root directory
Encrypted powershell cmdline option found
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Sample uses string decryption to hide its real strings
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1723688 Sample: ProxyLoader.exe Startdate: 26/06/2025 Architecture: WINDOWS Score: 100 76 Found malware configuration 2->76 78 Malicious sample detected (through community Yara rule) 2->78 80 Antivirus / Scanner detection for submitted sample 2->80 82 9 other signatures 2->82 10 ProxyLoader.exe 6 2->10         started        14 RelTekAudioDriver.exe 2->14         started        16 SecurityHealthSYStrayHelper.exe 2->16         started        18 4 other processes 2->18 process3 file4 68 C:\Users\user\nigga.exe, PE32 10->68 dropped 70 C:\Users\user\AppData\...\Client-built.exe, PE32 10->70 dropped 72 C:\Users\user\AppData\...\ProxyLoader.exe.log, CSV 10->72 dropped 100 Encrypted powershell cmdline option found 10->100 102 Drops PE files to the user root directory 10->102 20 Client-built.exe 5 10->20         started        24 nigga.exe 1 5 10->24         started        26 powershell.exe 23 10->26         started        28 powershell.exe 15 10->28         started        104 Antivirus detection for dropped file 14->104 106 Multi AV Scanner detection for dropped file 14->106 signatures5 process6 file7 64 C:\...\SecurityHealthSYStrayHelper.exe, PE32 20->64 dropped 84 Antivirus detection for dropped file 20->84 86 Multi AV Scanner detection for dropped file 20->86 88 Drops executables to the windows directory (C:\Windows) and starts them 20->88 98 3 other signatures 20->98 30 SecurityHealthSYStrayHelper.exe 20->30         started        34 schtasks.exe 20->34         started        66 C:\Users\user\...\RelTekAudioDriver.exe, PE32 24->66 dropped 90 Protects its processes via BreakOnTermination flag 24->90 92 Bypasses PowerShell execution policy 24->92 94 Adds a directory exclusion to Windows Defender 24->94 36 powershell.exe 24->36         started        38 powershell.exe 24->38         started        40 powershell.exe 24->40         started        46 3 other processes 24->46 96 Loading BitLocker PowerShell Module 26->96 42 conhost.exe 26->42         started        44 conhost.exe 28->44         started        signatures8 process9 dnsIp10 74 94.154.173.151, 5000, 7000 LVLT-10753US Germany 30->74 108 Antivirus detection for dropped file 30->108 110 Multi AV Scanner detection for dropped file 30->110 112 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->112 48 schtasks.exe 30->48         started        50 conhost.exe 34->50         started        114 Loading BitLocker PowerShell Module 36->114 52 conhost.exe 36->52         started        54 conhost.exe 38->54         started        56 conhost.exe 40->56         started        58 conhost.exe 46->58         started        signatures11 process12 process13 60 conhost.exe 48->60         started        process14 62 conhost.exe 60->62         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
.Net Executable PE (Portable Executable) Win 32 Exe x86
Link:
https://app.malva.re/file/780797d9ab0c3bceb7d50a30fc3de50e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19/
Verdict:
Malicious
Link:
https://tip.neiki.dev/file/4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-06-26 18:13:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
20 of 24 (83.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jjkzrycwuhzvxbryuydptbyk2lyf6af5hadw4xhwn7ezznrqtmmq._file
Verdict:
malicious
Label(s):
xworm
Create hunting rule
quasarrat
Create hunting rule
Similar samples:
403a210490c6018a9cf4e6f960a8fdc82fc48cc764de5f79156012b90ce96e12
AsyncRAT
4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
AsyncRAT
896dd6fb0a61655177ecd82a93a507c5d127b7e81e41568ecdf59b1f523b1cbc
AsyncRAT
be81829ae93532f01dcb0953b6918e893d8c48dcca4ee311d5e915d826336add
AsyncRAT
c2b78e277970e1607c23f03bf7facfb77a1dd50798acc078fd942abe59baca6f
AsyncRAT
c598101df884baa2a9db9162b00fe4ab7adf469ae87d764e6d8b210fe095e565
AsyncRAT
error
AsyncRAT
+ 68 additional samples on MalwareBazaar
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:quasar family:xworm defense_evasion execution persistence rat spyware trojan
Link:
https://tria.ge/reports/250626-w494naxsb1/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Scheduled Task/Job: Scheduled Task
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Enumerates physical storage devices
Drops file in System32 directory
Adds Run key to start application
Obfuscated Files or Information: Command Obfuscation
Checks computer location settings
Drops startup file
Executes dropped EXE
Command and Scripting Interpreter: PowerShell
Detect Xworm Payload
Quasar RAT
Quasar family
Quasar payload
Xworm
Xworm family
Malware Config
C2 Extraction:
94.154.173.151:7000
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/677a31b3-d8d5-4cf9-9bd3-55edb00619eb
Unpacked files
SH256 hash:
4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19
MD5 hash:
780797d9ab0c3bceb7d50a30fc3de50e
SHA1 hash:
ca6d3865d17265d94ff4af4f7851650244ae34bc
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
2a206314a981c039c58e7c0379e25e84cb51628ff8c60458421d84f2b03aa277
MD5 hash:
8b4aff32bd8ab8d75aba730192020560
SHA1 hash:
1af68230cfbc9af5db315435094dd1abe83c981f
Detections:
win_xworm_w0
Create hunting rule
win_mal_XWorm
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MALWARE_Win_AsyncRAT
Create hunting rule
MALWARE_Win_XWorm
Create hunting rule
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
e93423e1e076bb08282494a377055076f6b2092a2bb040745f56a54b1bdb8d90
MD5 hash:
d0291c0c2d0056ac6c56a8c5e934e0a5
SHA1 hash:
59e0be7cb485fc4df52f00a9546e6f84b83fedad
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
0b405341cee2c1cd5b36451ac468170edc30ae3e5ec0f4f169a4861d8e2a9b47
MD5 hash:
6ef349111885a40703ab93b3f27d9da7
SHA1 hash:
65ae9ee2a4361da20769669459c273fc72ddf467
Detections:
QuasarRAT
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
MAL_BackNet_Nov18_1
Create hunting rule
INDICATOR_EXE_Packed_Fody
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_SandboxHookingDLL
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
c1eaf3d3f243f6dfeddede45a7ab1a8b96b63c975365593c8a0bf41992c5b0d1
MD5 hash:
a4d49ff1550f49a53b2a3ca38d14f385
SHA1 hash:
f484d25d637f7bcaba70048adabc7db1fe82d294
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
d5235265564f0bfd23b7279d7bdccc9ea6383ed07c5d0bfdf6c99029af9a2c0c
MD5 hash:
1d3dd9fcc077e6b4f88c05b9aef53ee6
SHA1 hash:
12b33858bc84f54b8aa8dbcb5a0ec2da043a6f66
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
a91b1f4138079bead0028dbce4ec524dcf4e8e1672d54ee0d3e86a35e8705467
MD5 hash:
ac0c15fe3b87e21a838e838b5f0a6296
SHA1 hash:
2f4b62063a870db8afe48648d8e9afff2b351756
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
a1df78c029b2a06ef85d6d2fade5222da9409c75d36025e1486c9b3dc5e56340
MD5 hash:
7f6d1d574e7c4de1828a3cf1123d1d49
SHA1 hash:
354544099434d4a682fbfed84224dbeaeea2b907
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
SH256 hash:
fb649fb476a1d80bd0752ec7851a901011d31ab9e87ab755ce6f2873f96ec1a8
MD5 hash:
cc6cb47f9a0b36f1137e3ced6fd28926
SHA1 hash:
791144d3a1da69a4ff34188ec780ed544046fe94
Link:
https://www.unpac.me/results/8b041044-b011-4fc8-a319-88dbf117f5fd/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a5598e056a1/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/4a5598e056a1f35b8638a606f9870ad2f05f00bd38076e5cf66fc99cb6309b19

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:NETexecutableMicrosoft
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
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

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/11276/

Comments