masslogger | b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed

Analysis

max time kernel
105s
max time network
101s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
15/04/2022, 12:35

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General

Target
b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Size 1.4MB
Sample220415-psfbkscch6
SHA256 b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed
MD5 ca7957bbdbd7829ab15c624367f3b82f
SHA1 de862cb3c487d36ab954bbd2d7cce9bb217c8b09
SHA512 f9ab5a37f57d751b84ebb362fe2431bad8dd1b68cdeb221aa9856a77c02dbff0f55c6783a6438356b09960bee0aa3b4cedf866910a65e6a19d21bb0bb278725a
MD5 SHA1 SHA512

Score

10^/10

masslogger collection spyware stealer

Malware Config

Signatures

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

MassLogger Main Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4204-139-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger

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-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.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

Accesses Microsoft Outlook profiles 1 TTPs 42 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.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.

flow	ioc
8	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4984 set thread context of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
Token: SeDebugPrivilege	4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4204	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 4552	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	77
PID 4984 wrote to memory of 4552	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	77
PID 4984 wrote to memory of 4552	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	77
PID 4984 wrote to memory of 2832	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	78
PID 4984 wrote to memory of 2832	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	78
PID 4984 wrote to memory of 2832	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	78
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79
PID 4984 wrote to memory of 4204	4984	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe	79

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe

C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
"C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
  "C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe"
  2⤵
  PID:4552
- C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
  "C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe"
  2⤵
  PID:2832
- C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.exe
  "C:\Users\Admin\AppData\Local\Temp\b55cc68932bd36e0d0da05c5c40afd2416e6a505822584667780b48e469f22ed.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:4204

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4204-142-0x00000000051A3000-0x00000000051A5000-memory.dmp

Download

memory/4204-141-0x0000000006D10000-0x0000000006D60000-memory.dmp

Download

memory/4204-140-0x0000000006390000-0x00000000063F6000-memory.dmp

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memory/4204-139-0x0000000000400000-0x0000000000486000-memory.dmp

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memory/4984-130-0x0000000000BA0000-0x0000000000D16000-memory.dmp

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memory/4984-135-0x000000000B240000-0x000000000B296000-memory.dmp

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memory/4984-134-0x00000000058D0000-0x00000000058DA000-memory.dmp

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memory/4984-133-0x000000000B0B0000-0x000000000B142000-memory.dmp

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memory/4984-132-0x000000000B660000-0x000000000BC04000-memory.dmp

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memory/4984-131-0x000000000B010000-0x000000000B0AC000-memory.dmp

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