masslogger | d08fc097e6d26fba99270c26526b6bc1cc25bb27362a3a0a2d9f29c42468e583

Analysis

max time kernel
106s
max time network
117s
platform
windows7_x64
resource
win7-20220414-en
submitted
20-05-2022 22:19

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General

Target

Required Purchase Order Reference.exe
Size

1.0MB
MD5

1728a1c5055e320ba8f3c1f74b617f41
SHA1

b73625caa0fcf43c9cdce6fe406e793cbf43f0ec
SHA256

97a3f574869dfb82834d7481df5e280ab0944dda13ff548d5674e960493cfb8c
SHA512

fb0e14fac3487229b054ffd76b43a1e620030b3788480174b220ab3004e707875e6a298eef9c318d0b5e4b57d6890d7e15ec9c2e5d1e5f78b74db504f66cf974

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

<|| v2.4.0.0 ||> 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 12:23:36 AM MassLogger Started: 5/21/2022 12:23:13 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Required Purchase Order Reference.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> Disabled

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 6 IoCs

resource	yara_rule
behavioral1/memory/640-62-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/640-63-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/640-64-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/640-65-0x00000000004B324E-mapping.dmp	family_masslogger
behavioral1/memory/640-67-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/640-69-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	Required Purchase Order Reference.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

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

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1628 set thread context of 640	1628	Required Purchase Order Reference.exe	28

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
640	Required Purchase Order Reference.exe
640	Required Purchase Order Reference.exe
640	Required Purchase Order Reference.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	Required Purchase Order Reference.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28
PID 1628 wrote to memory of 640	1628	Required Purchase Order Reference.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Required Purchase Order Reference.exe

outlook_win_path 1 IoCs

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	Required Purchase Order Reference.exe

C:\Users\Admin\AppData\Local\Temp\Required Purchase Order Reference.exe
"C:\Users\Admin\AppData\Local\Temp\Required Purchase Order Reference.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\Temp\Required Purchase Order Reference.exe
  "C:\Users\Admin\AppData\Local\Temp\Required Purchase Order Reference.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/640-64-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-72-0x0000000004F75000-0x0000000004F86000-memory.dmp

Filesize
68KB

Download
memory/640-70-0x0000000000720000-0x0000000000798000-memory.dmp

Filesize
480KB

Download
memory/640-69-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-59-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-67-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-63-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-60-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/640-62-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1628-54-0x0000000000A30000-0x0000000000B44000-memory.dmp

Filesize
1.1MB

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

Filesize
8KB

Download
memory/1628-58-0x0000000005A10000-0x0000000005AD8000-memory.dmp

Filesize
800KB

Download
memory/1628-57-0x0000000005780000-0x0000000005874000-memory.dmp

Filesize
976KB

Download
memory/1628-56-0x0000000000220000-0x0000000000228000-memory.dmp

Filesize
32KB

Download