masslogger | c701607a15dded41bccd054b3e2b84bccd855e4cab07e6523e113f03c5be920a

General

Target

PO#556361TW.exe
Size

704KB
MD5

ff87250b9ebf0cddd524ba8e4282d94f
SHA1

af575cb114ce44e76ec94d5e5bd29f59230042c1
SHA256

4c4ee69bd58db589d202dcfb5872fb970e4367547e4ba90f57d9db502daa1c65
SHA512

f2244aaed8910aa338a15e4dd1e0128839ea053ca837955c40ba1d79829504e8a7276c8c4879ba52561757375b310507102868900c30d44ae2b444e586df79c8

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\19E979543A\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States Windows OS: Microsoft Windows 10 Pro 64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 8:55:23 PM MassLogger Started: 5/21/2022 8:55:08 PM Interval: 12 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO#556361TW.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 log file 1 IoCs

Detects a log file produced by MassLogger.

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	PO#556361TW.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 18 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO#556361TW.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.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
11	api.ipify.org

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4916	PO#556361TW.exe

Suspicious behavior: EnumeratesProcesses 25 IoCs

pid	Process
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe
4916	PO#556361TW.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	PO#556361TW.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4916	PO#556361TW.exe

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO#556361TW.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	PO#556361TW.exe

C:\Users\Admin\AppData\Local\Temp\PO#556361TW.exe
"C:\Users\Admin\AppData\Local\Temp\PO#556361TW.exe"
1⤵
- 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:4916

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

Replay Monitor

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Downloads

memory/4916-130-0x0000000000310000-0x00000000003C6000-memory.dmp

Filesize
728KB

Download
memory/4916-131-0x0000000004DE0000-0x0000000004E46000-memory.dmp

Filesize
408KB

Download
memory/4916-132-0x0000000005990000-0x0000000005F34000-memory.dmp

Filesize
5.6MB

Download
memory/4916-133-0x0000000005050000-0x00000000050EC000-memory.dmp

Filesize
624KB

Download
memory/4916-134-0x00000000050F0000-0x0000000005182000-memory.dmp

Filesize
584KB

Download
memory/4916-135-0x0000000006E50000-0x0000000006E5A000-memory.dmp

Filesize
40KB

Download
memory/4916-136-0x0000000007B50000-0x0000000007BA0000-memory.dmp

Filesize
320KB

Download

Analysis

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