MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd. 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: 18


Intelligence 18 IOCs YARA 40 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
SHA3-384 hash: e3bc5435b4b4a39bd46492f735e4f2ff03bc2e5a35d80de933f6dc556347a94846bfc3a1e924c9cb6651d918c7149472
SHA1 hash: 4092e72b48a310bc15a2a127f78452829c2f080a
MD5 hash: 063d1f3ed2ad5d96871dd1910b1722bb
humanhash: five-oregon-sodium-hot
File name:MasonRootkit.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:237'056 bytes
First seen:2025-03-23 18:59:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 3072:SvNYkHFE9jrOjA4LD8KbgVtn8Mo8G1gVziHzZbIK1YKB/pCAcNqXhwBV3yxSQig9:KrE9Q/5bTgVziHzZnSKrCbYMJObY8tq
Threatray 288 similar samples on MalwareBazaar
TLSH T189343A66F69000F6D4BA82758D636B02B7B2F0361721EBEF0B94495D7F637E04D29B90
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter BastianHein
Tags:AsyncRAT exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
405
Origin country :
CL CL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
MasonRootkit.exe
Verdict:
Malicious activity
Analysis date:
2025-03-23 19:07:25 UTC
Tags:
xworm
Link:
https://app.any.run/tasks/1d04b986-2e34-48fb-be0a-5617840eeec2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e196a5bb84e066269e8f07
Tags:
asyncrat autorun cobalt emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Сreating synchronization primitives
Creating a process from a recently created file
Launching a process
Forced system process termination
Unauthorized injection to a recently created process
Connection attempt
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-vm anti-vm asyncrat backdoor config-extracted exploit lolbin msbuild njrat obfuscated rat reconnaissance xworm
Link:
https://www.filescan.io/uploads/67e05a3e195c2ecf47efae3d/reports/060117ef-df23-426c-a58a-e9aad32d68db/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
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:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/eae217f8-135c-4a96-b8fa-c936e05fea96
Result
Threat name:
XWorm
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1646277
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to inject code into remote processes
Creates a thread in another existing process (thread injection)
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Hooks files or directories query functions (used to hide files and directories)
Hooks processes query functions (used to hide processes)
Hooks registry keys query functions (used to hide registry keys)
Injects a PE file into a foreign processes
Injects code into the Windows Explorer (explorer.exe)
Installs new ROOT certificates
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected XWorm
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1646277 Sample: MasonRootkit.exe Startdate: 23/03/2025 Architecture: WINDOWS Score: 100 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 Antivirus / Scanner detection for submitted sample 2->58 60 11 other signatures 2->60 7 MasonRootkit.exe 4 4 2->7         started        12 MasonRootkit.exe 4 3 2->12         started        process3 dnsIp4 52 217.195.153.81, 50002 SHOCK-1US Netherlands 7->52 46 C:\Users\user\AppData\...\s3tvag4o.5hb.exe, PE32+ 7->46 dropped 62 Uses schtasks.exe or at.exe to add and modify task schedules 7->62 14 s3tvag4o.5hb.exe 1 7->14         started        17 schtasks.exe 1 7->17         started        19 schtasks.exe 1 7->19         started        48 C:\Users\user\AppData\...\otep0ggk.adq.exe, PE32+ 12->48 dropped 50 C:\Users\user\...\MasonRootkit.exe.log, CSV 12->50 dropped 21 otep0ggk.adq.exe 12->21         started        23 schtasks.exe 1 12->23         started        25 schtasks.exe 1 12->25         started        file5 signatures6 process7 signatures8 68 Antivirus detection for dropped file 14->68 70 Multi AV Scanner detection for dropped file 14->70 72 Contains functionality to inject code into remote processes 14->72 80 4 other signatures 14->80 27 lsass.exe 14->27 injected 30 winlogon.exe 14->30 injected 32 dwm.exe 14->32 injected 34 svchost.exe 14->34 injected 36 conhost.exe 17->36         started        38 conhost.exe 19->38         started        74 Injects code into the Windows Explorer (explorer.exe) 21->74 76 Writes to foreign memory regions 21->76 78 Allocates memory in foreign processes 21->78 44 26 other processes 21->44 40 conhost.exe 23->40         started        42 conhost.exe 25->42         started        process9 signatures10 64 Installs new ROOT certificates 27->64 66 Writes to foreign memory regions 27->66
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd/
Threat name:
ByteCode-MSIL.Spyware.AsyncRAT
Create hunting rule
Status:
Malicious
First seen:
2025-03-23 19:00:12 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
30 of 36 (83.33%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fkrx45j44ett63xes2f6y7rdqg3zvbp7xupohwq75g2md2r6ytgq._file
Verdict:
malicious
Label(s):
r77
Create hunting rule
xworm
Create hunting rule
Similar samples:
03c95970bb3d91530aa29f9199ac1b2d7082672909e9c1a30804f99ebc9643b7
AsyncRAT
2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
AsyncRAT
3db6003aed5663530344f627592d7071efcece6ab608d114cd219d5b19f389a5
AsyncRAT
5c9c8ee0fd56497f8d1662c9d9347211761e969ab2af67d2c02ccb8588519f6e
AsyncRAT
9d08e5e62b409ef1ccd05c7996eb5432e4a36f55642cb7441d153909e823f144
AsyncRAT
error
AsyncRAT
+ 278 additional samples on MalwareBazaar
Result
Malware family:
xworm
Create hunting rule
Score:
  10/10
Tags:
family:xworm defense_evasion rat trojan
Link:
https://tria.ge/reports/250323-xnqkravrs2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies data under HKEY_USERS
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: LoadsDriver
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Drops file in Windows directory
Drops file in System32 directory
Checks computer location settings
Executes dropped EXE
Indicator Removal: Clear Windows Event Logs
Loads dropped DLL
Detect Xworm Payload
Suspicious use of NtCreateProcessExOtherParentProcess
Suspicious use of NtCreateUserProcessOtherParentProcess
Xworm
Xworm family
Malware Config
C2 Extraction:
217.195.153.81:50002
Verdict:
Malicious
Tags:
rootkit trojan rat xworm Win.Packed.njRAT-10002074-1
YARA:
Windows_Rootkit_R77_d0367e28 Windows_Rootkit_R77_Be403E3C MALWARE_Win_R77 win_mal_XWorm MALWARE_Win_XWorm
Link:
https://app.threat.zone/submission/b3bd5c5c-0654-4a74-a12e-0a670de21f94
Unpacked files
SH256 hash:
2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
MD5 hash:
063d1f3ed2ad5d96871dd1910b1722bb
SHA1 hash:
4092e72b48a310bc15a2a127f78452829c2f080a
Detections:
win_xworm_w0
Create hunting rule
XWorm
Create hunting rule
Link:
https://www.unpac.me/results/14fa3041-2613-4ca6-bd90-96acb8671e64/
SH256 hash:
879cc20b41635709bb304e315aaa5ca4708b480a1bfc2f4935fcf2215188efb0
MD5 hash:
94f1ab3a068f83b32639579ec9c5d025
SHA1 hash:
38f3d5bc5de46feb8de093d11329766b8e2054ae
Detections:
MALWARE_Win_R77
Create hunting rule
Link:
https://www.unpac.me/results/14fa3041-2613-4ca6-bd90-96acb8671e64/
Parent samples :
3db6003aed5663530344f627592d7071efcece6ab608d114cd219d5b19f389a5
9d08e5e62b409ef1ccd05c7996eb5432e4a36f55642cb7441d153909e823f144
2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
88bf0db97f3bf88a4b7f0aaff64cc4065cb5da6c140008e6cb22316da47428bb
e6b8af13a9832030a6e769db896510df174c3450cc1ea9beffd59d052204e6c4
2f0ff1a3573cb45775b709b1e8df418ff7adcc5b678a52a768d02933b6174ca6
SH256 hash:
ecac0c91d0825919494b420be0b3f8b8e75dd96bb59cc9fc6504fdd332ffb700
MD5 hash:
f09042a3ba866f4f7062b23e70e0f5eb
SHA1 hash:
bcb3e863b07e1bd68f7c84305ff789610ce52cdb
Detections:
MALWARE_Win_R77
Create hunting rule
Link:
https://www.unpac.me/results/14fa3041-2613-4ca6-bd90-96acb8671e64/
Parent samples :
ade5c6fc5f35fa02723f1c302d019419a7bc0d9234a4291040846c7e3515eb78
3db6003aed5663530344f627592d7071efcece6ab608d114cd219d5b19f389a5
9d08e5e62b409ef1ccd05c7996eb5432e4a36f55642cb7441d153909e823f144
2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd
88bf0db97f3bf88a4b7f0aaff64cc4065cb5da6c140008e6cb22316da47428bb
e6b8af13a9832030a6e769db896510df174c3450cc1ea9beffd59d052204e6c4
2f0ff1a3573cb45775b709b1e8df418ff7adcc5b678a52a768d02933b6174ca6
SH256 hash:
6da48f8a381922ce281e994d9a1993dd0faa011d90b288912102c856a8992b0f
MD5 hash:
bfe1667e8fec1b4b963a0bc8e53e0c90
SHA1 hash:
c3c0b989376aa26a7441c6f36591fea921e79cd9
Detections:
win_xworm_w0
Create hunting rule
XWorm
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/14fa3041-2613-4ca6-bd90-96acb8671e64/
Malware family:
XWorm
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2aa37e753ce1/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/2aa37e753ce1273f6ee4968bec7e2381b79a85ffbd1ee3da1fe9b4c1ea3ec4cd

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:ByteCode_MSIL_Backdoor_AsyncRAT
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects AsyncRAT backdoor.
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:MALWARE_Win_AsyncRAT
Create hunting rule
Author:ditekSHen
Description:Detects AsyncRAT
Rule name:MALWARE_Win_R77
Create hunting rule
Author:ditekSHen
Description:Detects r77 rootkit
Rule name:MALWARE_Win_XWorm
Create hunting rule
Author:ditekSHen
Description:Detects XWorm
Rule name:Multifamily_RAT_Detection
Create hunting rule
Author:Lucas Acha (http://www.lukeacha.com)
Description:Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:Njrat
Create hunting rule
Author:botherder https://github.com/botherder
Description:Njrat
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Rootkit_R77_be403e3c
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:Windows_Rootkit_R77_d0367e28
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/elastic-security-labs-steps-through-the-r77-rootkit
Rule name:win_xworm_w0
Create hunting rule
Author:jeFF0Falltrades
Description:Detects win.xworm.
Rule name:xworm
Create hunting rule
Author:jeFF0Falltrades
Rule name:XWorm
Create hunting rule
Author:ditekSHen
Description:Detects XWorm
Rule name:xworm_kingrat
Create hunting rule
Author:jeFF0Falltrades

File information

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

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
CHECK_TRUST_INFORequires Elevated Execution (level:requireAdministrator)high

Comments