masslogger | e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3 | Triage

Analysis

max time kernel
90s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
24-05-2022 23:29

Sharing

Report Analysis Logs

General

Target

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Size

789KB
MD5

b716d85bbaee06cea80c5d5eb8f9d965
SHA1

2c5b15f20d9d698f33a656c5ea76ed372f96f65b
SHA256

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3
SHA512

b9093c79128bfbe76740de770055c2bc8e5b9cde9046f4f3d5c6e8c86ea47f60cffd1f3ef7c382a1b0e257466162365905c85ced5668264cdcd1e32e18f9a905

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\0F48153F20\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/24/2022 11:32:55 PM MassLogger Started: 5/24/2022 11:32:52 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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 Main Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3528-137-0x0000000000400000-0x00000000004A8000-memory.dmp	family_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 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exee4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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 18 IoCs

Email Collection

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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

37 api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	pid	process	target process
PID 4740 set thread context of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

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

Processes:

schtasks.exe

pid process

4564 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

pid process

3528 e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

pid	process
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description pid process

Token: SeDebugPrivilege 3528 e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

pid process

3528 e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	pid	process	target process
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	schtasks.exe
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	schtasks.exe
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	schtasks.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

outlook_office_path 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

outlook_win_path 1 IoCs

Processes:

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
"C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4740

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PvKSHQfyvmnXd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp"
2⤵
- Creates scheduled task(s)
PID:4564

C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
"{path}"
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:3528

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

Credential Access

Credentials in Files

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe.log
Filesize
507B

MD5
ab4c71d3ff6255edd4e5c1e09540f49e

SHA1
22e06bf4e258741b5df918061871cba998c50cea

SHA256
1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

SHA512
8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp
Filesize
1KB

MD5
4d730f1fe389fb38e80735591127ba1a

SHA1
a24dcd8f91e3bbd1cdfed8b491326d2ec7787612

SHA256
c450bf56287bba8df8f1da436c6c885a1714cf8461798946223dec31113ec967

SHA512
6730d7f86e213e79a5d87df6ddbe05a743433e79f664917b0d702dcd649f0079bfaebb8277b64cbf5e8811d1b76f7153100c0ad58264090385381559bf3da5ff

Download Submit
memory/3528-136-0x0000000000000000-mapping.dmp

Download
memory/3528-137-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/3528-139-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/3528-140-0x0000000007070000-0x000000000707A000-memory.dmp

Filesize
40KB

Download
memory/3528-141-0x0000000007BB0000-0x0000000007C00000-memory.dmp

Filesize
320KB

Download
memory/4564-134-0x0000000000000000-mapping.dmp

Download
memory/4740-130-0x0000000000DD0000-0x0000000000E9C000-memory.dmp

Filesize
816KB

Download
memory/4740-131-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/4740-132-0x0000000005870000-0x0000000005902000-memory.dmp

Filesize
584KB

Download
memory/4740-133-0x00000000066D0000-0x0000000006C74000-memory.dmp

Filesize
5.6MB

Download