masslogger | 6c5210755b655eb982c7d572de94e5ef9d685ec236e629ef03eb99bbcabfcdaf

General

Target

RFQ.exe
Size

842KB
MD5

43bf47ce9c3b94e284d4b1127ae23316
SHA1

ecd3faede2a34fee58c8b84e297abf217e9b4b4c
SHA256

db18483e4256dc8f3362b52e3474260eeee4a7e7af43c8126200237e5a8804db
SHA512

dfa81578090f56788c7b76bbca564a2c3cfb2e49c6ee83a92a46adc5a57a802950c18368ae1a4df68d4e0b6e3342b2c83d0ebb1b73b4edd93f347d309a891d72

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8506BBE7FF\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 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 6:12:46 AM MassLogger Started: 5/21/2022 6:12:35 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RFQ.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 log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

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

Processes:

RFQ.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation RFQ.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

yara_rule
masslogger_log_file

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation	RFQ.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

RFQ.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RFQ.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RFQ.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RFQ.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RFQ.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.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:

RFQ.exe

description pid process target process

PID 1240 set thread context of 592 1240 RFQ.exe RFQ.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RFQ.exeRFQ.exe

pid process

1240 RFQ.exe
1240 RFQ.exe
592 RFQ.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ.exeRFQ.exe

description pid process

Token: SeDebugPrivilege 1240 RFQ.exe
Token: SeDebugPrivilege 592 RFQ.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1240 set thread context of 592	1240	RFQ.exe	RFQ.exe

pid	process
1240	RFQ.exe
1240	RFQ.exe
592	RFQ.exe

description	pid	process
Token: SeDebugPrivilege	1240	RFQ.exe
Token: SeDebugPrivilege	592	RFQ.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

RFQ.exe

description	pid	process	target process
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe
PID 1240 wrote to memory of 592	1240	RFQ.exe	RFQ.exe

outlook_office_path 1 IoCs

Processes:

RFQ.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe

outlook_win_path 1 IoCs

Processes:

RFQ.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ.exe

C:\Users\Admin\AppData\Local\Temp\RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1240
- C:\Users\Admin\AppData\Local\Temp\RFQ.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:592

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

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Downloads

memory/592-64-0x0000000000489A0E-mapping.dmp

Download
memory/592-66-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-72-0x00000000049D5000-0x00000000049E6000-memory.dmp

Filesize
68KB

Download
memory/592-71-0x0000000000760000-0x0000000000774000-memory.dmp

Filesize
80KB

Download
memory/592-70-0x00000000753E1000-0x00000000753E3000-memory.dmp

Filesize
8KB

Download
memory/592-59-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-69-0x0000000000540000-0x0000000000584000-memory.dmp

Filesize
272KB

Download
memory/592-61-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-58-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-63-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-62-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/592-68-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1240-55-0x0000000000230000-0x0000000000240000-memory.dmp

Filesize
64KB

Download
memory/1240-54-0x0000000000BA0000-0x0000000000C78000-memory.dmp

Filesize
864KB

Download
memory/1240-57-0x00000000055B0000-0x000000000563E000-memory.dmp

Filesize
568KB

Download
memory/1240-56-0x0000000004ED0000-0x0000000004F5A000-memory.dmp

Filesize
552KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads