masslogger | 5ab93ef45e2341d3769d642d23725a40fc9ebb93f0cced4f93da75003bfb16be

General

Target

doc20200812_00000187990091.xlsx.exe
Size

924KB
MD5

85b2da66be368bd544610451b942207f
SHA1

19028b35c5c8f29491be9b571c67015a84d4f46a
SHA256

35b6e2b8511ae0552a5de87abc510205a9d52a53ca6ed78b44299a31138475c8
SHA512

c68bcb0a7b7153ff839da76db1cc7d1a235a4cb057440bcd45c4868c2bd2aaddb2ded25ca25792234a4173d1140def7992cadde201de50bd311cc03025204c42

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

<|| v2.4.0.0 ||> User Name: Admin IP: 154.61.71.51 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: 5/21/2022 12:11:56 PM MassLogger Started: 5/21/2022 12:11:49 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

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

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:

doc20200812_00000187990091.xlsx.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	doc20200812_00000187990091.xlsx.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 35 IoCs

collection

Email Collection

T1114

Processes:

doc20200812_00000187990091.xlsx.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	doc20200812_00000187990091.xlsx.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:

doc20200812_00000187990091.xlsx.exe

description pid process target process

PID 1980 set thread context of 1268 1980 doc20200812_00000187990091.xlsx.exe doc20200812_00000187990091.xlsx.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

doc20200812_00000187990091.xlsx.exe

pid process

1268 doc20200812_00000187990091.xlsx.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1980 set thread context of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe

pid	process
1268	doc20200812_00000187990091.xlsx.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

doc20200812_00000187990091.xlsx.exedoc20200812_00000187990091.xlsx.exe

pid	process
1980	doc20200812_00000187990091.xlsx.exe
1980	doc20200812_00000187990091.xlsx.exe
1980	doc20200812_00000187990091.xlsx.exe
1268	doc20200812_00000187990091.xlsx.exe
1268	doc20200812_00000187990091.xlsx.exe
1268	doc20200812_00000187990091.xlsx.exe
1268	doc20200812_00000187990091.xlsx.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

doc20200812_00000187990091.xlsx.exedoc20200812_00000187990091.xlsx.exe

description pid process

Token: SeDebugPrivilege 1980 doc20200812_00000187990091.xlsx.exe
Token: SeDebugPrivilege 1268 doc20200812_00000187990091.xlsx.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

doc20200812_00000187990091.xlsx.exe

pid process

1268 doc20200812_00000187990091.xlsx.exe

description	pid	process
Token: SeDebugPrivilege	1980	doc20200812_00000187990091.xlsx.exe
Token: SeDebugPrivilege	1268	doc20200812_00000187990091.xlsx.exe

pid	process
1268	doc20200812_00000187990091.xlsx.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

doc20200812_00000187990091.xlsx.exe

description	pid	process	target process
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe
PID 1980 wrote to memory of 1268	1980	doc20200812_00000187990091.xlsx.exe	doc20200812_00000187990091.xlsx.exe

outlook_office_path 1 IoCs

Processes:

doc20200812_00000187990091.xlsx.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	doc20200812_00000187990091.xlsx.exe

outlook_win_path 1 IoCs

Processes:

doc20200812_00000187990091.xlsx.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	doc20200812_00000187990091.xlsx.exe

C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980

C:\Users\Admin\AppData\Local\Temp\doc20200812_00000187990091.xlsx.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:1268

Network

MITRE ATT&CK Enterprise 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

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1268-65-0x00000000004B2EAE-mapping.dmp

Download
memory/1268-64-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-72-0x0000000004EF5000-0x0000000004F06000-memory.dmp

Filesize
68KB

Download
memory/1268-70-0x0000000000BA0000-0x0000000000C18000-memory.dmp

Filesize
480KB

Download
memory/1268-69-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-59-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-67-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-63-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-60-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1268-62-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1980-54-0x0000000001050000-0x000000000113E000-memory.dmp

Filesize
952KB

Download
memory/1980-55-0x00000000768D1000-0x00000000768D3000-memory.dmp

Filesize
8KB

Download
memory/1980-58-0x0000000005930000-0x00000000059E8000-memory.dmp

Filesize
736KB

Download
memory/1980-57-0x00000000056A0000-0x000000000574E000-memory.dmp

Filesize
696KB

Download
memory/1980-56-0x0000000000710000-0x0000000000720000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads