masslogger | 560a0f75df71d4870f4dc8baebde68372178b3c9112b849a1a6f4995a99e2958

General

Target

Oypy7XYBTMuI7M2.exe
Size

702KB
MD5

fcada174c3065750b2fbf81594987216
SHA1

6aabb9ad9424b5be363fed86ad528b190a9bcc24
SHA256

f0176393025bb51cbf9ac3e0d457ab89e129d90583fa103ff9db794687787715
SHA512

14c5277eac5996f5a6660a434c9884279a34b383f87f603708b9faba03abb20802ff5a316d065a90987e0a4e674f5fb0e5fecf9618d53eb50fdb7361215ec035

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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 2:43:40 AM MassLogger Started: 5/21/2022 2:43:29 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Oypy7XYBTMuI7M2.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
SometimesINLIFE@

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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1960-57-0x0000000005F90000-0x0000000006026000-memory.dmp	rezer0

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:

Oypy7XYBTMuI7M2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	Oypy7XYBTMuI7M2.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 15 IoCs

collection

Email Collection

T1114

Processes:

Oypy7XYBTMuI7M2.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	Oypy7XYBTMuI7M2.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Oypy7XYBTMuI7M2.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Oypy7XYBTMuI7M2.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

11 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

description pid process target process

PID 1960 set thread context of 664 1960 Oypy7XYBTMuI7M2.exe Oypy7XYBTMuI7M2.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1320 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

pid process

664 Oypy7XYBTMuI7M2.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

pid process

664 Oypy7XYBTMuI7M2.exe
664 Oypy7XYBTMuI7M2.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

description pid process

Token: SeDebugPrivilege 664 Oypy7XYBTMuI7M2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

pid process

664 Oypy7XYBTMuI7M2.exe

flow	ioc
11	api.ipify.org

description	pid	process	target process
PID 1960 set thread context of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe

pid	process
1320	schtasks.exe

pid	process
664	Oypy7XYBTMuI7M2.exe

pid	process
664	Oypy7XYBTMuI7M2.exe
664	Oypy7XYBTMuI7M2.exe

description	pid	process
Token: SeDebugPrivilege	664	Oypy7XYBTMuI7M2.exe

pid	process
664	Oypy7XYBTMuI7M2.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Oypy7XYBTMuI7M2.exe

description	pid	process	target process
PID 1960 wrote to memory of 1320	1960	Oypy7XYBTMuI7M2.exe	schtasks.exe
PID 1960 wrote to memory of 1320	1960	Oypy7XYBTMuI7M2.exe	schtasks.exe
PID 1960 wrote to memory of 1320	1960	Oypy7XYBTMuI7M2.exe	schtasks.exe
PID 1960 wrote to memory of 1320	1960	Oypy7XYBTMuI7M2.exe	schtasks.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe
PID 1960 wrote to memory of 664	1960	Oypy7XYBTMuI7M2.exe	Oypy7XYBTMuI7M2.exe

outlook_office_path 1 IoCs

Processes:

Oypy7XYBTMuI7M2.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	Oypy7XYBTMuI7M2.exe

outlook_win_path 1 IoCs

Processes:

Oypy7XYBTMuI7M2.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	Oypy7XYBTMuI7M2.exe

C:\Users\Admin\AppData\Local\Temp\Oypy7XYBTMuI7M2.exe
"C:\Users\Admin\AppData\Local\Temp\Oypy7XYBTMuI7M2.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1960

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cdXoLuWnjLxPxP" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7A20.tmp"
2⤵
- Creates scheduled task(s)
PID:1320

C:\Users\Admin\AppData\Local\Temp\Oypy7XYBTMuI7M2.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
- outlook_office_path
- outlook_win_path
PID:664

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7A20.tmp
Filesize
1KB

MD5
aac2cfc90fb7089f44eb9dcf91dac7c7

SHA1
b52974b4397d676076e0ea8d525604a3962cb016

SHA256
104669b7cab520ee8824b35efbca6996794a7e05bff0698e3a5fa7b7817c8313

SHA512
ffcc85c8194a3cbdb57f3c778d06b2754ab1c743454c50b085751b81e5ab91b7fa6bad808554991993df506f8795dbad1f88c9c33ed76c74116e3f5c70b66731

Download Submit
memory/664-68-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-61-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-74-0x0000000004BD5000-0x0000000004BE6000-memory.dmp

Filesize
68KB

Download
memory/664-73-0x0000000000750000-0x0000000000764000-memory.dmp

Filesize
80KB

Download
memory/664-64-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-60-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-71-0x00000000004A0000-0x00000000004E4000-memory.dmp

Filesize
272KB

Download
memory/664-63-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-70-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-65-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/664-66-0x000000000048969E-mapping.dmp

Download
memory/1320-58-0x0000000000000000-mapping.dmp

Download
memory/1960-54-0x0000000000D40000-0x0000000000DF6000-memory.dmp

Filesize
728KB

Download
memory/1960-55-0x00000000759F1000-0x00000000759F3000-memory.dmp

Filesize
8KB

Download
memory/1960-56-0x0000000000250000-0x0000000000260000-memory.dmp

Filesize
64KB

Download
memory/1960-57-0x0000000005F90000-0x0000000006026000-memory.dmp

Filesize
600KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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