masslogger | a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5

General

Target

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Size

688KB
MD5

ecad32280bbd5601b22a12b8ebb7124f
SHA1

beeb525154606abbf5773ad9489ab4fd35089bcf
SHA256

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5
SHA512

9d5423a9fefc562fdf9b137a1810be1115751b5b38495af8e38154229ea1278321ca4951e72cd9bd1625e6ea55f2a928a635d9c8c83a08c3cc3a3dea1406d16c

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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/364-62-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/364-63-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/364-64-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/364-65-0x0000000000481D4E-mapping.dmp	family_masslogger
behavioral1/memory/364-67-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral1/memory/364-69-0x0000000000400000-0x0000000000486000-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

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.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 35 IoCs

collection

Email Collection

T1114

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.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:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

description	pid	process	target process
PID 1436 set thread context of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exepowershell.exe

pid	process
364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
1732	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
Token: SeDebugPrivilege	1732	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exea855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

description	pid	process	target process
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 1436 wrote to memory of 364	1436	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
PID 364 wrote to memory of 1732	364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	powershell.exe
PID 364 wrote to memory of 1732	364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	powershell.exe
PID 364 wrote to memory of 1732	364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	powershell.exe
PID 364 wrote to memory of 1732	364	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe	powershell.exe

outlook_office_path 1 IoCs

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

outlook_win_path 1 IoCs

Processes:

a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.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	a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe

C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
"C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1436

C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe
"C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe"
2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:364

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell" Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\a855cffb375c1169d6b6a6f1690f19037eabce6a4b546864ab6c2a686edf01a5.exe'
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1732

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

memory/364-69-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-60-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-73-0x0000000004F15000-0x0000000004F26000-memory.dmp

Filesize
68KB

Download
memory/364-67-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-63-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-59-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-65-0x0000000000481D4E-mapping.dmp

Download
memory/364-62-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/364-64-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1436-58-0x0000000005420000-0x00000000054AA000-memory.dmp

Filesize
552KB

Download
memory/1436-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1436-57-0x0000000005250000-0x00000000052FA000-memory.dmp

Filesize
680KB

Download
memory/1436-54-0x0000000000C00000-0x0000000000CB2000-memory.dmp

Filesize
712KB

Download
memory/1436-56-0x0000000000360000-0x0000000000368000-memory.dmp

Filesize
32KB

Download
memory/1732-71-0x0000000000000000-mapping.dmp

Download
memory/1732-74-0x000000006EF00000-0x000000006F4AB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads