masslogger | e6d6efece3b8baf2d0373c8adc270be90e9e6d48ffdf6c3253646075dd4c2fdc

General

Target

company letter_pdf_______________________________________.exe
Size

1.7MB
MD5

f013528fbca058469f52035d94bea1af
SHA1

28c80b4151a987f318d6faae6bf19d9566c3cc75
SHA256

b46571fd44360c7d8e9771a807c0914f419dc7dc69a43b475b537484a1aa5053
SHA512

a31622815b06eb2d22e6648d2fe540568ee571667170eda34d14344573fa5285cd548558e6ec67b9f094d930f65c2f19f7b4f97e60fa201a30278f33259b8905

Score

10^/10

masslogger collection spyware stealer upx

Malware Config

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.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll	acprotect

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll	upx

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:

company letter_pdf_______________________________________.exe

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

Loads dropped DLL 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

744 company letter_pdf_______________________________________.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
744	company letter_pdf_______________________________________.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

company letter_pdf_______________________________________.exe

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

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

description	pid	process	target process
PID 1628 set thread context of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

744 company letter_pdf_______________________________________.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

744 company letter_pdf_______________________________________.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

description pid process

Token: SeDebugPrivilege 744 company letter_pdf_______________________________________.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

744 company letter_pdf_______________________________________.exe

pid	process
744	company letter_pdf_______________________________________.exe

pid	process
744	company letter_pdf_______________________________________.exe

description	pid	process
Token: SeDebugPrivilege	744	company letter_pdf_______________________________________.exe

pid	process
744	company letter_pdf_______________________________________.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

company letter_pdf_______________________________________.exe

description	pid	process	target process
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe

outlook_office_path 1 IoCs

Processes:

company letter_pdf_______________________________________.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	company letter_pdf_______________________________________.exe

outlook_win_path 1 IoCs

Processes:

company letter_pdf_______________________________________.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	company letter_pdf_______________________________________.exe

C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1628

C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe
"{path}"
2⤵
- Checks computer location settings
- Loads dropped DLL
- 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:744

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

\Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll
Filesize
594KB

MD5
e81aeac387c5db32b7f9b07d15e788e0

SHA1
829be6eaf1cb0d82b2ddfc98272e1087f4a7a7c3

SHA256
44f31f99f048bfc5195937353b5207332e455bcd5a722bcfd32cacfd93f60f06

SHA512
cc6a96325a01c50c059706a1f4156f109e502ef9c0b0f5de209d1f52e7cc973cebc027f57ed988e9d1b8fca62746b60ee7430d608de95cdd0e5ac3cb61fbe32e

Download Submit
memory/744-86-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-63-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-633-0x00000000005A0000-0x0000000000600000-memory.dmp

Filesize
384KB

Download
memory/744-88-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-59-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-92-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-62-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-90-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-64-0x000000000055A42E-mapping.dmp

Download
memory/744-66-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-68-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-70-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-72-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-74-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-76-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-78-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-80-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-82-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-84-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-632-0x00000000067C0000-0x0000000006850000-memory.dmp

Filesize
576KB

Download
memory/744-58-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-631-0x0000000004F20000-0x0000000004F64000-memory.dmp

Filesize
272KB

Download
memory/744-61-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-94-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-96-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-98-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-100-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-102-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-104-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-108-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-106-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-110-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-112-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-114-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-116-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-118-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-120-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/1628-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1628-56-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/1628-54-0x0000000000BF0000-0x0000000000DAE000-memory.dmp

Filesize
1.7MB

Download
memory/1628-57-0x0000000005A10000-0x0000000005B78000-memory.dmp

Filesize
1.4MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads