masslogger | 8a30191071b228039a217301f4f3431924d492d01ec49302fa30e5ab9388b81d

Analysis

max time kernel
80s
max time network
139s
platform
windows7_x64
resource
win7-20220414-en
submitted
02-05-2022 23:21

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General

Target

PO 202108 FOR JANUARY 2021.exe
Size

1.5MB
MD5

d6fedf690e4ea4ba0918f9deddeb9b7a
SHA1

abb8d5664b096b6caa92993ffb75c3460f6cc7a0
SHA256

828a9fae03e6a20158c58a659f27371fbe9a836199a3327fe5ef457115cf0206
SHA512

5b3c0d624c76a5badb81c4fcb23137cee89736d4212016337a63f953a85ba033970e9f540cb63cf12bd876e0dfcfbed6a3a5817a734e8f53863d87baf0dec0cc

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: 5/3/2022 12:54:12 AM MassLogger Started: 5/3/2022 12:54:05 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| Bot Killer ||> Disabled <|| Window Searcher ||> 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 ||> Disabled

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 6 IoCs

resource	yara_rule
behavioral1/memory/1500-64-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1500-65-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1500-66-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1500-67-0x00000000004B32CE-mapping.dmp	family_masslogger
behavioral1/memory/1500-69-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger
behavioral1/memory/1500-71-0x0000000000400000-0x00000000004B8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	PO 202108 FOR JANUARY 2021.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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	PO 202108 FOR JANUARY 2021.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO 202108 FOR JANUARY 2021.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.

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1836 set thread context of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34

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

pid	Process
1708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
1836	PO 202108 FOR JANUARY 2021.exe
1836	PO 202108 FOR JANUARY 2021.exe
1836	PO 202108 FOR JANUARY 2021.exe
1836	PO 202108 FOR JANUARY 2021.exe
1500	PO 202108 FOR JANUARY 2021.exe
1500	PO 202108 FOR JANUARY 2021.exe
1500	PO 202108 FOR JANUARY 2021.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1836	PO 202108 FOR JANUARY 2021.exe
Token: SeDebugPrivilege	1500	PO 202108 FOR JANUARY 2021.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1836 wrote to memory of 1708	1836	PO 202108 FOR JANUARY 2021.exe	28
PID 1836 wrote to memory of 1708	1836	PO 202108 FOR JANUARY 2021.exe	28
PID 1836 wrote to memory of 1708	1836	PO 202108 FOR JANUARY 2021.exe	28
PID 1836 wrote to memory of 1708	1836	PO 202108 FOR JANUARY 2021.exe	28
PID 1836 wrote to memory of 1776	1836	PO 202108 FOR JANUARY 2021.exe	30
PID 1836 wrote to memory of 1776	1836	PO 202108 FOR JANUARY 2021.exe	30
PID 1836 wrote to memory of 1776	1836	PO 202108 FOR JANUARY 2021.exe	30
PID 1836 wrote to memory of 1776	1836	PO 202108 FOR JANUARY 2021.exe	30
PID 1836 wrote to memory of 1720	1836	PO 202108 FOR JANUARY 2021.exe	31
PID 1836 wrote to memory of 1720	1836	PO 202108 FOR JANUARY 2021.exe	31
PID 1836 wrote to memory of 1720	1836	PO 202108 FOR JANUARY 2021.exe	31
PID 1836 wrote to memory of 1720	1836	PO 202108 FOR JANUARY 2021.exe	31
PID 1836 wrote to memory of 2028	1836	PO 202108 FOR JANUARY 2021.exe	32
PID 1836 wrote to memory of 2028	1836	PO 202108 FOR JANUARY 2021.exe	32
PID 1836 wrote to memory of 2028	1836	PO 202108 FOR JANUARY 2021.exe	32
PID 1836 wrote to memory of 2028	1836	PO 202108 FOR JANUARY 2021.exe	32
PID 1836 wrote to memory of 2032	1836	PO 202108 FOR JANUARY 2021.exe	33
PID 1836 wrote to memory of 2032	1836	PO 202108 FOR JANUARY 2021.exe	33
PID 1836 wrote to memory of 2032	1836	PO 202108 FOR JANUARY 2021.exe	33
PID 1836 wrote to memory of 2032	1836	PO 202108 FOR JANUARY 2021.exe	33
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34
PID 1836 wrote to memory of 1500	1836	PO 202108 FOR JANUARY 2021.exe	34

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO 202108 FOR JANUARY 2021.exe

outlook_win_path 1 IoCs

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	PO 202108 FOR JANUARY 2021.exe

C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
"C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1836
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\NGgqNkUr" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB77E.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1708
- C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
  2⤵
  PID:1776
- C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
  2⤵
  PID:1720
- C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
  2⤵
  PID:2028
- C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
  2⤵
  PID:2032
- C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe
  "C:\Users\Admin\AppData\Local\Temp\PO 202108 FOR JANUARY 2021.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpB77E.tmp

Filesize
1KB

MD5
1f299eae3c6afe3bc8ed4be5fd5897ab

SHA1
f81611d08ea079f029c0db3cc06209335471bf0c

SHA256
b9e9b70ba5795d6513bd36639c050d3c4349268c58f91649c7c10e6efd75b7da

SHA512
da59f528a2824532ec30a35a210e775347f88843b2847fea74bc4852ca078dfd91f954cb60abf510db5f8cbe76e53d3aa311b18ce9e5647787c4d494977ee225

Download Submit
memory/1500-61-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-74-0x0000000004EE5000-0x0000000004EF6000-memory.dmp

Filesize
68KB

Download
memory/1500-72-0x0000000002260000-0x00000000022D8000-memory.dmp

Filesize
480KB

Download
memory/1500-64-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-71-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-69-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-62-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-66-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1500-65-0x0000000000400000-0x00000000004B8000-memory.dmp

Filesize
736KB

Download
memory/1836-54-0x0000000000080000-0x000000000020E000-memory.dmp

Filesize
1.6MB

Download
memory/1836-56-0x00000000004E0000-0x00000000004EC000-memory.dmp

Filesize
48KB

Download
memory/1836-55-0x0000000076421000-0x0000000076423000-memory.dmp

Filesize
8KB

Download
memory/1836-58-0x0000000005820000-0x000000000590E000-memory.dmp

Filesize
952KB

Download
memory/1836-57-0x0000000005710000-0x0000000005824000-memory.dmp

Filesize
1.1MB

Download