masslogger | 73fa7d72535f68d0def7fc2a838c2f8b175e13128f774fdbd6b4335dc95c0453

General

Target

wewewewe.exe
Size

1.4MB
MD5

029c7ec1040676551533408ef85d1f68
SHA1

9e5fb6844e76687bb47f7b7e549307c95305fdae
SHA256

619d55dafa6cfdc23580e3a1e8a57ef3a246a0163385f4a61a591ac0517d85f6
SHA512

2e0c010d934131d0641f89c9ebeb7a295f519e09578bda477f58b88b4e8c0d7658adc3c07f8a94e455b4b4c46fcd56e32c27f5afb4b4ededccb668fdd572042c

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/20/2022 6:07:22 PM MassLogger Started: 5/20/2022 6:07:13 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\wewewewe.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/836-60-0x0000000001EF0000-0x0000000001F98000-memory.dmp	family_masslogger
behavioral1/memory/836-59-0x0000000001EF0000-0x0000000001F98000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

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

Processes:

wewewewe.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	wewewewe.exe

Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wewewew.vbs notepad.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\wewewew.vbs	notepad.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

wewewewe.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	wewewewe.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	wewewewe.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	wewewewe.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	wewewewe.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

4 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

wewewewe.exe

description pid process target process

PID 936 set thread context of 836 936 wewewewe.exe wewewewe.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

wewewewe.exe

pid process

836 wewewewe.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

wewewewe.exewewewewe.exe

pid process

936 wewewewe.exe
836 wewewewe.exe
836 wewewewe.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

wewewewe.exe

pid process

936 wewewewe.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

wewewewe.exe

description pid process

Token: SeDebugPrivilege 836 wewewewe.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

wewewewe.exe

pid process

836 wewewewe.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 936 set thread context of 836	936	wewewewe.exe	wewewewe.exe

pid	process
836	wewewewe.exe

pid	process
936	wewewewe.exe
836	wewewewe.exe
836	wewewewe.exe

pid	process
936	wewewewe.exe

description	pid	process
Token: SeDebugPrivilege	836	wewewewe.exe

pid	process
836	wewewewe.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

wewewewe.exe

description	pid	process	target process
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 992	936	wewewewe.exe	notepad.exe
PID 936 wrote to memory of 836	936	wewewewe.exe	wewewewe.exe
PID 936 wrote to memory of 836	936	wewewewe.exe	wewewewe.exe
PID 936 wrote to memory of 836	936	wewewewe.exe	wewewewe.exe
PID 936 wrote to memory of 836	936	wewewewe.exe	wewewewe.exe

outlook_office_path 1 IoCs

Processes:

wewewewe.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe

outlook_win_path 1 IoCs

Processes:

wewewewe.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	wewewewe.exe

C:\Users\Admin\AppData\Local\Temp\wewewewe.exe
"C:\Users\Admin\AppData\Local\Temp\wewewewe.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:936

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
PID:992

C:\Users\Admin\AppData\Local\Temp\wewewewe.exe
"C:\Users\Admin\AppData\Local\Temp\wewewewe.exe"
2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

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/836-58-0x0000000000562080-mapping.dmp

Download
memory/836-60-0x0000000001EF0000-0x0000000001F98000-memory.dmp

Filesize
672KB

Download
memory/836-59-0x0000000001EF0000-0x0000000001F98000-memory.dmp

Filesize
672KB

Download
memory/836-62-0x0000000004B60000-0x0000000004BA4000-memory.dmp

Filesize
272KB

Download
memory/836-63-0x0000000004B25000-0x0000000004B36000-memory.dmp

Filesize
68KB

Download
memory/936-54-0x00000000755C1000-0x00000000755C3000-memory.dmp

Filesize
8KB

Download
memory/936-55-0x0000000000280000-0x0000000000289000-memory.dmp

Filesize
36KB

Download
memory/992-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads