masslogger | 76b03bb43e03f8fd3e3c246127be09fb90c58a66c6cc04361893a87936383916

Analysis

max time kernel
124s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:44

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General

Target

Business Register.exe
Size

2.4MB
MD5

c2840f6bf3243c09e6758e5c38494c40
SHA1

a997eece939a77b279d62adffa2ef91f84794538
SHA256

7b6cb4a94f2899f6363bbaeab018125a20310d9ad1d22b121d004803914fb378
SHA512

31bccf2518a55535faa0f5594887a0c16f0a1541d6b64b83a2b3287776fbb72a3a838295ce2a94a0a078d38b4874e7ac84eeab22df50bb9ee273e11f49e5b78a

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\EEB932C954\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 6:08:39 AM MassLogger Started: 5/21/2022 6:08:18 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe As Administrator: True

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
Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

1920 InstallUtil.exe

yara_rule
masslogger_log_file

pid	process
1920	InstallUtil.exe

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:

InstallUtil.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation	InstallUtil.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

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

29 api.ipify.org
33 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Business Register.exe

description pid process target process

PID 4184 set thread context of 1920 4184 Business Register.exe InstallUtil.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

InstallUtil.exe

pid process

1920 InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Business Register.exeInstallUtil.exe

pid process

4184 Business Register.exe
4184 Business Register.exe
4184 Business Register.exe
1920 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Business Register.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 4184 Business Register.exe
Token: SeDebugPrivilege 1920 InstallUtil.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

1920 InstallUtil.exe

flow	ioc
29	api.ipify.org
33	api.ipify.org

description	pid	process	target process
PID 4184 set thread context of 1920	4184	Business Register.exe	InstallUtil.exe

pid	process
1920	InstallUtil.exe

pid	process
4184	Business Register.exe
4184	Business Register.exe
4184	Business Register.exe
1920	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4184	Business Register.exe
Token: SeDebugPrivilege	1920	InstallUtil.exe

pid	process
1920	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Business Register.exe

description	pid	process	target process
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe
PID 4184 wrote to memory of 1920	4184	Business Register.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Business Register.exe
"C:\Users\Admin\AppData\Local\Temp\Business Register.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4184
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - 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:1920

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/1920-166-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-140-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-170-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-135-0x0000000000000000-mapping.dmp

Download
memory/1920-136-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-646-0x0000000007A70000-0x0000000007B0C000-memory.dmp

Filesize
624KB

Download
memory/1920-645-0x0000000007980000-0x00000000079D0000-memory.dmp

Filesize
320KB

Download
memory/1920-168-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-142-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-144-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-146-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-148-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-644-0x00000000067A0000-0x00000000067AA000-memory.dmp

Filesize
40KB

Download
memory/1920-152-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-154-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-156-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-158-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-162-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-160-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-164-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-150-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-643-0x00000000062E0000-0x0000000006346000-memory.dmp

Filesize
408KB

Download
memory/1920-200-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-172-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-174-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-176-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-178-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-180-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-182-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-184-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-186-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-188-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-190-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-192-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-194-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-196-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1920-198-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4184-134-0x0000000005530000-0x00000000055C2000-memory.dmp

Filesize
584KB

Download
memory/4184-133-0x0000000005310000-0x0000000005332000-memory.dmp

Filesize
136KB

Download
memory/4184-130-0x00000000006F0000-0x0000000000958000-memory.dmp

Filesize
2.4MB

Download
memory/4184-131-0x00000000057D0000-0x0000000005D74000-memory.dmp

Filesize
5.6MB

Download
memory/4184-132-0x00000000052C0000-0x0000000005304000-memory.dmp

Filesize
272KB

Download