masslogger | 76b03bb43e03f8fd3e3c246127be09fb90c58a66c6cc04361893a87936383916

Analysis

max time kernel
89s
max time network
94s
platform
windows7_x64
resource
win7-20220414-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\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 4:09:07 AM MassLogger Started: 5/21/2022 4:08:56 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe As Administrator: True

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Dmacdavid

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

1564 InstallUtil.exe

yara_rule
masslogger_log_file

pid	process
1564	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-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	InstallUtil.exe

Loads dropped DLL 1 IoCs

Processes:

Business Register.exe

pid process

1080 Business Register.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

pid	process
1080	Business Register.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.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:

Business Register.exe

description pid process target process

PID 1080 set thread context of 1564 1080 Business Register.exe InstallUtil.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

InstallUtil.exe

pid process

1564 InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Business Register.exeInstallUtil.exe

pid process

1080 Business Register.exe
1080 Business Register.exe
1080 Business Register.exe
1564 InstallUtil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Business Register.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 1080 Business Register.exe
Token: SeDebugPrivilege 1564 InstallUtil.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

1564 InstallUtil.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1080 set thread context of 1564	1080	Business Register.exe	InstallUtil.exe

pid	process
1564	InstallUtil.exe

pid	process
1080	Business Register.exe
1080	Business Register.exe
1080	Business Register.exe
1564	InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	1080	Business Register.exe
Token: SeDebugPrivilege	1564	InstallUtil.exe

pid	process
1564	InstallUtil.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

Business Register.exe

description	pid	process	target process
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe
PID 1080 wrote to memory of 1564	1080	Business Register.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\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⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1080
- 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:1564

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
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
memory/1080-55-0x00000000004D0000-0x00000000004E6000-memory.dmp

Filesize
88KB

Download
memory/1080-56-0x00000000752D1000-0x00000000752D3000-memory.dmp

Filesize
8KB

Download
memory/1080-57-0x0000000000640000-0x0000000000648000-memory.dmp

Filesize
32KB

Download
memory/1080-58-0x0000000000650000-0x0000000000658000-memory.dmp

Filesize
32KB

Download
memory/1080-59-0x0000000000690000-0x0000000000698000-memory.dmp

Filesize
32KB

Download
memory/1080-54-0x0000000000210000-0x0000000000478000-memory.dmp

Filesize
2.4MB

Download
memory/1564-86-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-94-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-67-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-68-0x00000000004A12AE-mapping.dmp

Download
memory/1564-71-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-64-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-73-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-62-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-76-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-78-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-80-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-82-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-84-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-61-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-88-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-90-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-92-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-66-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-96-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-98-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-100-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-102-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-104-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-106-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-108-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-110-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-112-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-114-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-116-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-118-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-120-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-122-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-124-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-126-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/1564-580-0x0000000001300000-0x0000000001344000-memory.dmp

Filesize
272KB

Download