meduza | 5c0ead3d71e0c901aef2a4c7a2ad29212fcb9f8dc49c5e6b524f822ec65511fd

General

Target

gem1.exe
Size

1.2MB
MD5

b151d347d2f47dad2db0aa029dd6c9dd
SHA1

8e191fc786e010f93c9bcc41de3a42e1e16fa345
SHA256

5c0ead3d71e0c901aef2a4c7a2ad29212fcb9f8dc49c5e6b524f822ec65511fd
SHA512

cb6e1d0d13a00713afc45557cff0a6d71024fda5d509356a04e09d0c999b219e221c3bdd7702043f1cb9290329c3fb9ad121168f60f5a94f5a0d50e45abdc81b
SSDEEP

24576:RQu06mH2AfjusEQ3MWTwGxXjfAnpiYQ7eVGKtFwVrJa/tXjuD/:3LmH2AfisEQ5XEnpI74arM/tXj+/

Score

10^/10

meduza collection discovery spyware stealer

Malware Config

Signatures

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

Meduza Stealer payload 6 IoCs

resource	yara_rule
behavioral1/memory/3440-4-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza
behavioral1/memory/3440-5-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza
behavioral1/memory/3440-6-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza
behavioral1/memory/3440-8-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza
behavioral1/memory/3440-15-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza
behavioral1/memory/3440-16-0x0000000000400000-0x0000000000526000-memory.dmp	family_meduza

Meduza family
meduza

Checks computer location settings 2 TTPs 1 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-1-5-21-2503671516-4119152987-701077851-1000\Control Panel\International\Geo\Nation	gem1.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-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.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
5	api.ipify.org
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4792 set thread context of 3440	4792	gem1.exe	82

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4908	4792	WerFault.exe	80

System Location Discovery: System Language Discovery 1 TTPs 2 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	gem1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gem1.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3440	gem1.exe
3440	gem1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3440	gem1.exe
Token: SeImpersonatePrivilege	3440	gem1.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82
PID 4792 wrote to memory of 3440	4792	gem1.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2503671516-4119152987-701077851-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	gem1.exe

C:\Users\Admin\AppData\Local\Temp\gem1.exe
"C:\Users\Admin\AppData\Local\Temp\gem1.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4792
- C:\Users\Admin\AppData\Local\Temp\gem1.exe
  "C:\Users\Admin\AppData\Local\Temp\gem1.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:3440
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4792 -s 808
  2⤵
  - Program crash
  PID:4908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4792 -ip 4792
1⤵
PID:1720

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Browser Information Discovery

Query Registry

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3440-4-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-5-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-6-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-8-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-15-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/3440-16-0x0000000000400000-0x0000000000526000-memory.dmp

Filesize
1.1MB

Download
memory/4792-0-0x0000000074EFE000-0x0000000074EFF000-memory.dmp

Filesize
4KB

Download
memory/4792-1-0x0000000000D10000-0x0000000000E40000-memory.dmp

Filesize
1.2MB

Download
memory/4792-2-0x0000000005D50000-0x00000000062F6000-memory.dmp

Filesize
5.6MB

Download
memory/4792-7-0x0000000074EF0000-0x00000000756A1000-memory.dmp

Filesize
7.7MB

Download

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