meduza | fbe49c90e24fb5b6be83157db5a5415411b410c6b13fdb9ef12740a157f60481

General

Target

ruppert.exe
Size

2.6MB
MD5

c3242cab034e773dad42d6fbff0b4ecf
SHA1

c4b7daa973a191f9dcd6e6f637602b5683899571
SHA256

fbe49c90e24fb5b6be83157db5a5415411b410c6b13fdb9ef12740a157f60481
SHA512

e74a8e474f4385531387e0f51cff631a8e7c0eacb5d23021f0ac4701f356f869889472814cc5856aef776fefa8703a94578af4feec8e037d89cbe95a409027c3
SSDEEP

24576:V9L8hJZ4uB+Ch0lhSMXl84BqdrZdJAxl21KPETU6D5Q:PL8hD4au/qdrZdyw1KP91

Score

10^/10

meduza collection defense_evasion discovery spyware stealer

Malware Config

Extracted

Family

meduza

C2

45.130.145.152

Attributes

anti_dbg
true
anti_vm
true
build_name
Work
extensions
.txt;.doc;.docx;.pdf;.xls;.xlsx;.log;.db;.sqlite
grabber_max_size
4.194304e+06
port
15666
self_destruct
false

Signatures

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

Meduza Stealer payload 5 IoCs

resource	yara_rule
behavioral1/memory/1964-0-0x0000000001E90000-0x0000000001FCE000-memory.dmp	family_meduza
behavioral1/memory/1964-10-0x0000000001E90000-0x0000000001FCE000-memory.dmp	family_meduza
behavioral1/memory/1964-11-0x0000000001E90000-0x0000000001FCE000-memory.dmp	family_meduza
behavioral1/memory/1232-12-0x0000000001E70000-0x0000000001FAE000-memory.dmp	family_meduza
behavioral1/memory/1232-13-0x0000000001E70000-0x0000000001FAE000-memory.dmp	family_meduza

Meduza family
meduza

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-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\International\Geo\Nation	ruppert.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Control Panel\International\Geo\Nation	ruppert.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-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Office\12.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Office\14.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.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
6	api.ipify.org

System Binary Proxy Execution: Verclsid 1 TTPs 1 IoCs

Adversaries may abuse Verclsid to proxy execution of malicious code.

defense_evasion

Verclsid

T1218.012

pid	Process
2608	verclsid.exe

Browser Information Discovery 1 TTPs
Enumerate browser information.
discovery

Browser Information Discovery
T1217

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1964	ruppert.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1964	ruppert.exe
Token: SeImpersonatePrivilege	1964	ruppert.exe
Token: SeDebugPrivilege	1232	ruppert.exe
Token: SeImpersonatePrivilege	1232	ruppert.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1232 wrote to memory of 2568	1232	ruppert.exe	36
PID 1232 wrote to memory of 2568	1232	ruppert.exe	36
PID 1232 wrote to memory of 2568	1232	ruppert.exe	36

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	ruppert.exe

C:\Users\Admin\AppData\Local\Temp\ruppert.exe
"C:\Users\Admin\AppData\Local\Temp\ruppert.exe"
1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1964

C:\Windows\system32\verclsid.exe
"C:\Windows\system32\verclsid.exe" /S /C {0B2C9183-C9FA-4C53-AE21-C900B0C39965} /I {0C733A8A-2A1C-11CE-ADE5-00AA0044773D} /X 0x401
1⤵
- System Binary Proxy Execution: Verclsid
PID:2608

C:\Users\Admin\AppData\Local\Temp\ruppert.exe
"C:\Users\Admin\AppData\Local\Temp\ruppert.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1232
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1232 -s 608
  2⤵
  PID:2568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

System Binary Proxy Execution

1

T1218

Verclsid

1

T1218.012

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

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1232-12-0x0000000001E70000-0x0000000001FAE000-memory.dmp

Filesize
1.2MB

Download
memory/1232-13-0x0000000001E70000-0x0000000001FAE000-memory.dmp

Filesize
1.2MB

Download
memory/1964-0-0x0000000001E90000-0x0000000001FCE000-memory.dmp

Filesize
1.2MB

Download
memory/1964-10-0x0000000001E90000-0x0000000001FCE000-memory.dmp

Filesize
1.2MB

Download
memory/1964-11-0x0000000001E90000-0x0000000001FCE000-memory.dmp

Filesize
1.2MB

Download

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Analysis

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