masslogger | 81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62

General

Target

81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Size

495KB
MD5

23060ccfc90d21321420bda396ce8f8e
SHA1

69239688b9089a3ba073bf88e0fc60c9bbe0efcc
SHA256

81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62
SHA512

a45c413e5cba8e09c7f418af7c74070178c94acea4433ce240c0f8f1d961eab65dd52288a9b7dfbb479080486ba847b661cbcfe39bc9b7a209c91599f6b9424d

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 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: 5/25/2022 3:17:23 AM MassLogger Started: 5/25/2022 3:17:11 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe MassLogger Melt: false MassLogger Exit after delivery: true 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.

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-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.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

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.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
6	api.ipify.org

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1760	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1760	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe

outlook_win_path 1 IoCs

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	81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe

C:\Users\Admin\AppData\Local\Temp\81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe
"C:\Users\Admin\AppData\Local\Temp\81982f45f90c69f5fbdf0bb34273a99c1a9d1d8b1b51a307cb4b3dfa829bae62.exe"
1⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:1760

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

Replay Monitor

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Downloads

memory/1760-54-0x00000000000E0000-0x0000000000162000-memory.dmp

Filesize
520KB

Download
memory/1760-55-0x00000000002C0000-0x0000000000304000-memory.dmp

Filesize
272KB

Download
memory/1760-56-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/1760-57-0x0000000000390000-0x00000000003A4000-memory.dmp

Filesize
80KB

Download
memory/1760-58-0x0000000004A05000-0x0000000004A16000-memory.dmp

Filesize
68KB

Download

Analysis

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