masslogger | 52fe0bd9d845df83c0f65bfcb4f5cb86f5fe3e4328d59cb1e459ffade64c3700

General

Target

Product Inquiry N0.3000334756.exe
Size

856KB
MD5

934f4480b7c045329d444d37760225a6
SHA1

f819e700b862ba46f2fabc573f15f6c5554ecf1b
SHA256

0137eab9ffb892bcff1aabd6bba89c41459cf49087222ebb2723c3ce5a755ad3
SHA512

559826a4f7562db9c17699cacc9f60145c6dcc554485aacc86bd4d23b8dad8a8bdbc2190a9622a7b7f3e8ae7ac0297f842547c41589a3deb723a4e1b563d0677

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.1 ################################################################# ### 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 2:10:59 PM MassLogger Started: 5/21/2022 2:10:42 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Product Inquiry N0.3000334756.exe MassLogger Melt: false 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/1292-60-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1292-61-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1292-62-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1292-63-0x00000000004A2BFE-mapping.dmp	family_masslogger
behavioral1/memory/1292-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1292-67-0x0000000000400000-0x00000000004A8000-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

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1464-56-0x0000000004F70000-0x000000000501E000-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:

Product Inquiry N0.3000334756.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	Product Inquiry N0.3000334756.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:

Product Inquiry N0.3000334756.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Product Inquiry N0.3000334756.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.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
Suspicious use of SetThreadContext 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

description pid process target process

PID 1464 set thread context of 1292 1464 Product Inquiry N0.3000334756.exe Product Inquiry N0.3000334756.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

pid process

1292 Product Inquiry N0.3000334756.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Product Inquiry N0.3000334756.exe

pid process

1292 Product Inquiry N0.3000334756.exe
1292 Product Inquiry N0.3000334756.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

description pid process

Token: SeDebugPrivilege 1292 Product Inquiry N0.3000334756.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

pid process

1292 Product Inquiry N0.3000334756.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1464 set thread context of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe

pid	process
1292	Product Inquiry N0.3000334756.exe

pid	process
1292	Product Inquiry N0.3000334756.exe
1292	Product Inquiry N0.3000334756.exe

description	pid	process
Token: SeDebugPrivilege	1292	Product Inquiry N0.3000334756.exe

pid	process
1292	Product Inquiry N0.3000334756.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

Product Inquiry N0.3000334756.exe

description	pid	process	target process
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe
PID 1464 wrote to memory of 1292	1464	Product Inquiry N0.3000334756.exe	Product Inquiry N0.3000334756.exe

outlook_office_path 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe

outlook_win_path 1 IoCs

Processes:

Product Inquiry N0.3000334756.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Product Inquiry N0.3000334756.exe

C:\Users\Admin\AppData\Local\Temp\Product Inquiry N0.3000334756.exe
"C:\Users\Admin\AppData\Local\Temp\Product Inquiry N0.3000334756.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1464

C:\Users\Admin\AppData\Local\Temp\Product Inquiry N0.3000334756.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:1292

Network

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

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Downloads

memory/1292-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-63-0x00000000004A2BFE-mapping.dmp

Download
memory/1292-70-0x00000000009C5000-0x00000000009D6000-memory.dmp

Filesize
68KB

Download
memory/1292-57-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-58-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-69-0x00000000754A1000-0x00000000754A3000-memory.dmp

Filesize
8KB

Download
memory/1292-68-0x0000000000600000-0x0000000000644000-memory.dmp

Filesize
272KB

Download
memory/1292-67-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1292-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1464-54-0x00000000002E0000-0x00000000003BC000-memory.dmp

Filesize
880KB

Download
memory/1464-55-0x00000000002D0000-0x00000000002E6000-memory.dmp

Filesize
88KB

Download
memory/1464-56-0x0000000004F70000-0x000000000501E000-memory.dmp

Filesize
696KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads