masslogger | cdfbe574fd5d0be6ec09893c69bb550af33ff85b39019abcced1cf4d1ae6afba

General

Target

Purchase List.exe
Size

869KB
MD5

d0454c5763ed33859b7e691a2b758a53
SHA1

b5922dd8d08302b632e14848868534c9c55e275a
SHA256

a695f00451136422236ac536e9a7417a8826001ecb0ba51e582687cb0dc3f0ba
SHA512

cf3b3b7fcd1baed5fa294104032206e2ad6bd6c46df53b576a3a45ca3062e8167baf8eee1621f42deffb016e44538f324bdb71a502f405f804bfb63b8eee67ff

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 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 2:30:47 PM MassLogger Started: 5/21/2022 2:30:31 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Purchase List.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

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1928-56-0x0000000005470000-0x0000000005528000-memory.dmp	rezer0

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:

Purchase List.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	Purchase List.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

Processes:

Purchase List.exe

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

Purchase List.exe

description pid process target process

PID 1928 set thread context of 944 1928 Purchase List.exe Purchase List.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

1376 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Purchase List.exe

pid process

944 Purchase List.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Purchase List.exe

pid process

944 Purchase List.exe
944 Purchase List.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Purchase List.exe

description pid process

Token: SeDebugPrivilege 944 Purchase List.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Purchase List.exe

pid process

944 Purchase List.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1928 set thread context of 944	1928	Purchase List.exe	Purchase List.exe

pid	process
1376	schtasks.exe

pid	process
944	Purchase List.exe

pid	process
944	Purchase List.exe
944	Purchase List.exe

description	pid	process
Token: SeDebugPrivilege	944	Purchase List.exe

pid	process
944	Purchase List.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Purchase List.exe

description	pid	process	target process
PID 1928 wrote to memory of 1376	1928	Purchase List.exe	schtasks.exe
PID 1928 wrote to memory of 1376	1928	Purchase List.exe	schtasks.exe
PID 1928 wrote to memory of 1376	1928	Purchase List.exe	schtasks.exe
PID 1928 wrote to memory of 1376	1928	Purchase List.exe	schtasks.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe
PID 1928 wrote to memory of 944	1928	Purchase List.exe	Purchase List.exe

outlook_office_path 1 IoCs

Processes:

Purchase List.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	Purchase List.exe

outlook_win_path 1 IoCs

Processes:

Purchase List.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	Purchase List.exe

C:\Users\Admin\AppData\Local\Temp\Purchase List.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase List.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1928

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\woUSvxLUnlfbH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA3B0.tmp"
2⤵
- Creates scheduled task(s)
PID:1376

C:\Users\Admin\AppData\Local\Temp\Purchase List.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:944

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA3B0.tmp
Filesize
1KB

MD5
80916c371d03d25522437b1cab4237ae

SHA1
3fc1ed6712e0793a7a56591e8255e6af1ed55bb8

SHA256
5a773f9de2b7c3373fc2b58ec48a9f060cba250a221e577399ed631b49e9207e

SHA512
623878b8a5d3e766031e700e4e3e7f770c7c7b540e82f0497e1e52efebf6204a442d63f492cb26de02d0b2a35030c189d190a1aee2366fbff977576738db8deb

Download Submit
memory/944-85-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-580-0x0000000000BB5000-0x0000000000BC6000-memory.dmp

Filesize
68KB

Download
memory/944-87-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-59-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-91-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-62-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-89-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-65-0x00000000004AB6AE-mapping.dmp

Download
memory/944-67-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-69-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-71-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-73-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-75-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-77-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-79-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-81-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-83-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-578-0x0000000000620000-0x0000000000664000-memory.dmp

Filesize
272KB

Download
memory/944-123-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-121-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-93-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-95-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-97-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-99-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-101-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-103-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-105-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-107-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-109-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-111-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-113-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-115-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-117-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/944-119-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1376-57-0x0000000000000000-mapping.dmp

Download
memory/1928-56-0x0000000005470000-0x0000000005528000-memory.dmp

Filesize
736KB

Download
memory/1928-55-0x0000000000230000-0x0000000000240000-memory.dmp

Filesize
64KB

Download
memory/1928-54-0x0000000000E20000-0x0000000000F00000-memory.dmp

Filesize
896KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads