masslogger | 36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31

General

Target

36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe
Size

790KB
MD5

c31ef7aefa08862def40cd90a0197e83
SHA1

954a3553f9a2e59edc2d818fe6676cfb9053fbf4
SHA256

36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31
SHA512

657dd644c3cb15bbe0ca3dcefa8265e4dadf28b4ccda4421ed4c946535882732f79c6f18727af6911320ee110c6e56615e90fa355cfd2e1b94de7773031400d0

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: 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: 5/3/2022 10:15:40 PM MassLogger Started: 5/3/2022 10:15:33 PM Interval: 2 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation RegAsm.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-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.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

3 api.ipify.org

flow	ioc
3	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe

description	pid	process	target process
PID 112 set thread context of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

RegAsm.exe

pid process

892 RegAsm.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RegAsm.exe

pid process

892 RegAsm.exe
892 RegAsm.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe

pid process

112 36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RegAsm.exe

description pid process

Token: SeDebugPrivilege 892 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

892 RegAsm.exe

pid	process
892	RegAsm.exe

pid	process
892	RegAsm.exe
892	RegAsm.exe

pid	process
112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe

description	pid	process
Token: SeDebugPrivilege	892	RegAsm.exe

pid	process
892	RegAsm.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe

description	pid	process	target process
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe
PID 112 wrote to memory of 892	112	36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.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	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.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	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe
"C:\Users\Admin\AppData\Local\Temp\36489e691b7ecb8dac7db354a4541417f045bb164db520387a4794ce7dfcce31.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:112

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
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:892

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/112-54-0x0000000000110000-0x00000000001DE000-memory.dmp

Filesize
824KB

Download
memory/112-55-0x0000000002240000-0x00000000022D6000-memory.dmp

Filesize
600KB

Download
memory/112-56-0x0000000076191000-0x0000000076193000-memory.dmp

Filesize
8KB

Download
memory/112-58-0x0000000000280000-0x0000000000283000-memory.dmp

Filesize
12KB

Download
memory/892-57-0x000000000048926E-mapping.dmp

Download
memory/892-60-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/892-61-0x0000000000520000-0x0000000000564000-memory.dmp

Filesize
272KB

Download
memory/892-62-0x00000000007B0000-0x00000000007C4000-memory.dmp

Filesize
80KB

Download
memory/892-63-0x00000000008E5000-0x00000000008F6000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads