masslogger | 575c7db5be5d8e616f9aac99a1c5eea7dd8454be245aba610be252e08b68068b

Analysis

max time kernel
67s
max time network
122s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 00:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

Enquiry_00039.exe
Size

891KB
MD5

04c44b60982c1ffe9261c5b331da73a9
SHA1

3d64f7f3cf5de94c81f4fd7fb1471fda42f6f627
SHA256

9cba273cb9f9c6425ff47def05ea9f968752db15ce9255319cfd4a38ccc92e61
SHA512

286c3ed34b90909087a1f2f1134c340170b099d54cb5e4cb0288ec18e11729e54abe83ef3b8e7f1482d11d16231845c54f97970432e20fdad3ecdb6d8298f401

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.51 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 12:41:12 AM MassLogger Started: 5/21/2022 12:41:01 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Enquiry_00039.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> 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/1836-64-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1836-65-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1836-67-0x00000000004B372E-mapping.dmp	family_masslogger
behavioral1/memory/1836-66-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1836-69-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1836-71-0x0000000000400000-0x00000000004B8000-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-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	Enquiry_00039.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 created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Enquiry_00039.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Enquiry_00039.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 1564 set thread context of 1836	1564	Enquiry_00039.exe	29

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

pid	Process
1204	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1564	Enquiry_00039.exe
1564	Enquiry_00039.exe
1836	Enquiry_00039.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1564	Enquiry_00039.exe
Token: SeDebugPrivilege	1836	Enquiry_00039.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1564 wrote to memory of 1204	1564	Enquiry_00039.exe	27
PID 1564 wrote to memory of 1204	1564	Enquiry_00039.exe	27
PID 1564 wrote to memory of 1204	1564	Enquiry_00039.exe	27
PID 1564 wrote to memory of 1204	1564	Enquiry_00039.exe	27
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29
PID 1564 wrote to memory of 1836	1564	Enquiry_00039.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Enquiry_00039.exe

C:\Users\Admin\AppData\Local\Temp\Enquiry_00039.exe
"C:\Users\Admin\AppData\Local\Temp\Enquiry_00039.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aRRLzZdlB" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAC47.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1204
- C:\Users\Admin\AppData\Local\Temp\Enquiry_00039.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAC47.tmp

Filesize
1KB

MD5
8bf4bdf231dc39c131987cc989b77e17

SHA1
333248867a0e805351e34ab5c8358e702e00d681

SHA256
568d01f85dc65ed2ecfb2e5b5ac2f0de8b0b89d62ae92e5f8967570f32a61aee

SHA512
ec2e5999775724380da266be308f7187892f2c846d5426471627a8214d4c3bdeb3efed18602378a114b5273c530979dfd322dd2fab0335612c2390de0a666218

Download Submit
memory/1564-54-0x0000000000BE0000-0x0000000000CC4000-memory.dmp

Filesize
912KB

Download
memory/1564-55-0x0000000075CD1000-0x0000000075CD3000-memory.dmp

Filesize
8KB

Download
memory/1564-56-0x00000000004C0000-0x00000000004D0000-memory.dmp

Filesize
64KB

Download
memory/1564-57-0x00000000057C0000-0x0000000005878000-memory.dmp

Filesize
736KB

Download
memory/1564-58-0x0000000005CD0000-0x0000000005D88000-memory.dmp

Filesize
736KB

Download
memory/1836-62-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-61-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-64-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-65-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-66-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-69-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-71-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-72-0x0000000000B60000-0x0000000000BD8000-memory.dmp

Filesize
480KB

Download
memory/1836-74-0x0000000000705000-0x0000000000716000-memory.dmp

Filesize
68KB

Download