masslogger | 0c2202bfc3e20a9a1be645b4ec5295a035c93643c99d20248d85a16dcd424cf5

General

Target

Product-7783887.exe
Size

880KB
MD5

f35fc88f11874e02e90bb0aa88e2fccf
SHA1

0aa0f21d88688af2e38bf574a18c97f9939b6b42
SHA256

235bae9ae04ff1860775c42e55671d3bb84d5abdf4f0f0267c66c46050f8aaca
SHA512

e4bc231916f44dd6cd8785a741537ebe364e0d4656b57977046df2e4f1deb8b236c46abe6b8549102755b64cc653e6e5d61a3600965c9c3ac2cb88736400d0be

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: 127.0.0.1 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: 5/21/2022 4:22:41 AM MassLogger Started: 5/21/2022 4:22:04 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe MassLogger Melt: true 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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/956-61-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/956-62-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/956-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/956-64-0x00000000004A2D0E-mapping.dmp	family_masslogger
behavioral1/memory/956-66-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/956-68-0x0000000000400000-0x00000000004A8000-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:

Product-7783887.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	Product-7783887.exe

Deletes itself 1 IoCs

Processes:

powershell.exe

pid process

1760 powershell.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

pid	process
1760	powershell.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

Product-7783887.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Product-7783887.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Product-7783887.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product-7783887.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

Product-7783887.exe

description pid process target process

PID 1672 set thread context of 956 1672 Product-7783887.exe Product-7783887.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Product-7783887.exe

pid process

956 Product-7783887.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

Product-7783887.exepowershell.exe

pid process

956 Product-7783887.exe
956 Product-7783887.exe
1760 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Product-7783887.exepowershell.exe

description pid process

Token: SeDebugPrivilege 956 Product-7783887.exe
Token: SeDebugPrivilege 1760 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Product-7783887.exe

pid process

956 Product-7783887.exe

description	pid	process	target process
PID 1672 set thread context of 956	1672	Product-7783887.exe	Product-7783887.exe

pid	process
956	Product-7783887.exe

pid	process
956	Product-7783887.exe
956	Product-7783887.exe
1760	powershell.exe

description	pid	process
Token: SeDebugPrivilege	956	Product-7783887.exe
Token: SeDebugPrivilege	1760	powershell.exe

pid	process
956	Product-7783887.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

Product-7783887.exeProduct-7783887.execmd.exe

description	pid	process	target process
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 1672 wrote to memory of 956	1672	Product-7783887.exe	Product-7783887.exe
PID 956 wrote to memory of 368	956	Product-7783887.exe	cmd.exe
PID 956 wrote to memory of 368	956	Product-7783887.exe	cmd.exe
PID 956 wrote to memory of 368	956	Product-7783887.exe	cmd.exe
PID 956 wrote to memory of 368	956	Product-7783887.exe	cmd.exe
PID 368 wrote to memory of 1760	368	cmd.exe	powershell.exe
PID 368 wrote to memory of 1760	368	cmd.exe	powershell.exe
PID 368 wrote to memory of 1760	368	cmd.exe	powershell.exe
PID 368 wrote to memory of 1760	368	cmd.exe	powershell.exe

outlook_office_path 1 IoCs

Processes:

Product-7783887.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	Product-7783887.exe

outlook_win_path 1 IoCs

Processes:

Product-7783887.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	Product-7783887.exe

C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe
"C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672

C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe
"{path}"
2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:956

C:\Windows\SysWOW64\cmd.exe
"cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:368

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Product-7783887.exe'
4⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1760

MITRE ATT&CK Matrix ATT&CK 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

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/368-72-0x0000000000000000-mapping.dmp

Download
memory/956-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-71-0x0000000001275000-0x0000000001286000-memory.dmp

Filesize
68KB

Download
memory/956-58-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-64-0x00000000004A2D0E-mapping.dmp

Download
memory/956-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-69-0x00000000003A0000-0x00000000003E4000-memory.dmp

Filesize
272KB

Download
memory/956-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/956-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1672-54-0x0000000001300000-0x00000000013E2000-memory.dmp

Filesize
904KB

Download
memory/1672-56-0x0000000000470000-0x0000000000478000-memory.dmp

Filesize
32KB

Download
memory/1672-57-0x00000000008D0000-0x0000000000980000-memory.dmp

Filesize
704KB

Download
memory/1672-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1760-73-0x0000000000000000-mapping.dmp

Download
memory/1760-75-0x0000000074C50000-0x00000000751FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads