Analysis
-
max time kernel
120s -
max time network
126s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
21-11-2024 11:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe
Resource
win10v2004-20241007-en
General
-
Target
2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe
-
Size
4.1MB
-
MD5
bf76e56ebf9bfeeb4660d2b38c1a431e
-
SHA1
9c312e856d8c35cccde1657773b7fd7c60585233
-
SHA256
9942b0cf3776c6a023f103deacba17a52607707d6257531c0fd2e3982d5979af
-
SHA512
4b860b1f5111b4a77c139ae65b7293e1211264d71b1540e210cdcca52972d1ba5e7aa4e5adf53edbd36727e85fa4625074e21ff4e4fa4ef7ae018ac0014b5852
-
SSDEEP
49152:/xGK0l3e3udPEcpRd2oXnXfvVOvw4CLzEAgpAEVV7yKzYkkrKVmZ:/xGK09yuZZ
Malware Config
Extracted
meduza
109.107.181.162
-
anti_dbg
true
-
anti_vm
true
-
build_name
703
-
extensions
none
-
grabber_max_size
1.048576e+06
-
links
none
-
port
15666
-
self_destruct
true
Signatures
-
Meduza Stealer payload 48 IoCs
resource yara_rule behavioral1/memory/2460-7-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-16-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-26-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-28-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-24-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-23-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-22-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-21-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-20-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-18-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-17-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-15-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-13-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-11-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-8-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-6-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-5-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-42-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-44-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-47-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-46-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-48-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-53-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-52-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-50-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-49-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-54-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-59-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-58-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-56-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-55-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-84-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-87-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-86-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-82-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-79-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-78-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-74-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-73-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-69-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-68-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-63-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-61-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-92-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-91-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-89-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-94-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza behavioral1/memory/2460-95-0x0000000140000000-0x00000001401FA000-memory.dmp family_meduza -
Meduza family
-
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Control Panel\International\Geo\Nation 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe -
Deletes itself 1 IoCs
pid Process 1164 cmd.exe -
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
-
Accesses Microsoft Outlook profiles 1 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
-
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 6 api.ipify.org 5 api.ipify.org -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2488 set thread context of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 -
System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs
Adversaries may check for Internet connectivity on compromised systems.
pid Process 1164 cmd.exe 664 PING.EXE -
Runs ping.exe 1 TTPs 1 IoCs
pid Process 664 PING.EXE -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe Token: SeImpersonatePrivilege 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe -
Suspicious use of WriteProcessMemory 17 IoCs
description pid Process procid_target PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2488 wrote to memory of 2460 2488 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 31 PID 2460 wrote to memory of 1164 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 33 PID 2460 wrote to memory of 1164 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 33 PID 2460 wrote to memory of 1164 2460 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe 33 PID 1164 wrote to memory of 664 1164 cmd.exe 35 PID 1164 wrote to memory of 664 1164 cmd.exe 35 PID 1164 wrote to memory of 664 1164 cmd.exe 35 -
outlook_office_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe -
outlook_win_path 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe"C:\Users\Admin\AppData\Local\Temp\2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2488 -
C:\Users\Admin\AppData\Local\Temp\2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exeC:\Users\Admin\AppData\Local\Temp\2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:2460 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /C ping 1.1.1.1 -n 1 -w 3000 > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\2024-11-21_bf76e56ebf9bfeeb4660d2b38c1a431e_ryuk.exe"3⤵
- Deletes itself
- System Network Configuration Discovery: Internet Connection Discovery
- Suspicious use of WriteProcessMemory
PID:1164 -
C:\Windows\system32\PING.EXEping 1.1.1.1 -n 1 -w 30004⤵
- System Network Configuration Discovery: Internet Connection Discovery
- Runs ping.exe
PID:664
-
-
-
Network
MITRE ATT&CK Enterprise v15
Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
1Credentials In Files
1