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
C:\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
C:\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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	company letter_pdf_______________________________________.exe

Loads dropped DLL 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

3892 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
3892	company letter_pdf_______________________________________.exe

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

company letter_pdf_______________________________________.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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

31 api.ipify.org

flow	ioc
31	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

description	pid	process	target process
PID 4092 set thread context of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

3892 company letter_pdf_______________________________________.exe

pid	process
3892	company letter_pdf_______________________________________.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

company letter_pdf_______________________________________.execompany letter_pdf_______________________________________.exe

pid	process
4092	company letter_pdf_______________________________________.exe
4092	company letter_pdf_______________________________________.exe
3892	company letter_pdf_______________________________________.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

company letter_pdf_______________________________________.execompany letter_pdf_______________________________________.exe

description	pid	process
Token: SeDebugPrivilege	4092	company letter_pdf_______________________________________.exe
Token: SeDebugPrivilege	3892	company letter_pdf_______________________________________.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

company letter_pdf_______________________________________.exe

pid process

3892 company letter_pdf_______________________________________.exe

pid	process
3892	company letter_pdf_______________________________________.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

company letter_pdf_______________________________________.exe

description	pid	process	target process
PID 4092 wrote to memory of 4424	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 4424	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 4424	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	company letter_pdf_______________________________________.exe	company letter_pdf_______________________________________.exe
PID 4092 wrote to memory of 3892	4092	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-1-5-21-3751123196-3323558407-1869646069-1000\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-1-5-21-3751123196-3323558407-1869646069-1000\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 behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4092

C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe
"{path}"
2⤵
PID:4424

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:3892

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\company letter_pdf_______________________________________.exe.log
Filesize
685B

MD5
64f7d1001f1b3c983776387519079574

SHA1
9696fb5ffd5597c12fc1ca6bcb7fe889f8cc9c2c

SHA256
b7724fa480f240bb6e0131973d0f085d5fb0865677f277a2a306f4fa89c89485

SHA512
bf81147d1a43290c845f788fbe633bf0ae8abff31a342b0278e525fdf65bd5294e797b3a11f375027e5b2c42d224459583d5a0e753f563d5034d4d7653d39eba

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

MD5
e81aeac387c5db32b7f9b07d15e788e0

SHA1
829be6eaf1cb0d82b2ddfc98272e1087f4a7a7c3

SHA256
44f31f99f048bfc5195937353b5207332e455bcd5a722bcfd32cacfd93f60f06

SHA512
cc6a96325a01c50c059706a1f4156f109e502ef9c0b0f5de209d1f52e7cc973cebc027f57ed988e9d1b8fca62746b60ee7430d608de95cdd0e5ac3cb61fbe32e

Download Submit
memory/3892-167-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-141-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-171-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-701-0x00000000097B0000-0x0000000009800000-memory.dmp

Filesize
320KB

Download
memory/3892-136-0x0000000000000000-mapping.dmp

Download
memory/3892-137-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-139-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-169-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-143-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-145-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-147-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-149-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-700-0x0000000006A60000-0x0000000006A6A000-memory.dmp

Filesize
40KB

Download
memory/3892-153-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-155-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-157-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-159-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-161-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-163-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-165-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-151-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-699-0x00000000064B0000-0x0000000006516000-memory.dmp

Filesize
408KB

Download
memory/3892-199-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-173-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-175-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-177-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-179-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-181-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-183-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-185-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-187-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-189-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-191-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-193-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-195-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/3892-197-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/4092-134-0x0000000005CB0000-0x0000000005D4C000-memory.dmp

Filesize
624KB

Download
memory/4092-132-0x0000000005810000-0x00000000058A2000-memory.dmp

Filesize
584KB

Download
memory/4092-133-0x0000000006370000-0x00000000064F6000-memory.dmp

Filesize
1.5MB

Download
memory/4092-130-0x0000000000C80000-0x0000000000E3E000-memory.dmp

Filesize
1.7MB

Download
memory/4092-131-0x0000000005DC0000-0x0000000006364000-memory.dmp

Filesize
5.6MB

Download
memory/4424-135-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads