masslogger | 51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3

Analysis

max time kernel
113s
max time network
128s
platform
windows7_x64
resource
win7-20220414-en
submitted
24-05-2022 22:40

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General

Target

51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Size

1.4MB
MD5

3338ab802e6b10e0b9400ba1aa16459f
SHA1

708e0c78ca69ae2f3d52a24f1d88240b9351d413
SHA256

51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3
SHA512

3abad3c64f26245b5a50fb669088bd9f85cf2dda44d2c9727daddb33866d32d58f6d31e1f1f369dc167a2df0309e53c08869d9d7a67ecb7c0d39536a78ff2961

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

<|| v2.1.0.0 ||> User Name: Admin IP: 127.0.0.1 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: 5/25/2022 12:48:34 AM MassLogger Started: 5/25/2022 12:48:18 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> 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 ||> Disabled

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
71c7eb1f8baa88

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/1500-63-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1500-67-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1500-69-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1500-65-0x00000000004945DE-mapping.dmp	family_masslogger
behavioral1/memory/1500-64-0x0000000000400000-0x000000000049A000-memory.dmp	family_masslogger
behavioral1/memory/1500-62-0x0000000000400000-0x000000000049A000-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-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.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-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.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 888 set thread context of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29

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
836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1500	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1500	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 888 wrote to memory of 836	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	28
PID 888 wrote to memory of 836	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	28
PID 888 wrote to memory of 836	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	28
PID 888 wrote to memory of 836	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	28
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29
PID 888 wrote to memory of 1500	888	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe

outlook_win_path 1 IoCs

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	51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe

C:\Users\Admin\AppData\Local\Temp\51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
"C:\Users\Admin\AppData\Local\Temp\51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:888
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SykZpiBPRpDQ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp3757.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:836
- C:\Users\Admin\AppData\Local\Temp\51091505f98b9c8b8732986911d36a901153d721d0e30bdaad8d8ce5b771c8d3.exe
  "{path}"
  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\tmp3757.tmp

Filesize
1KB

MD5
4b8c480f7d54fd51883f318aae3f2981

SHA1
ad1df92a9352f52059f53d87f4a8746146987350

SHA256
81499a47eaf94363ba12c4cc3cb0200dafe16878a518396d37aa5f0093ad137f

SHA512
0e41036639d8ee79948e3805236b6797e377bf8447466b35ba738d53d242b20f7c284d41d163b34ba46268c4d04109b830f45685cdeb3a35a40ae8b8b46d07d1

Download Submit
memory/888-54-0x0000000000870000-0x00000000009D4000-memory.dmp

Filesize
1.4MB

Download
memory/888-55-0x0000000000440000-0x000000000044A000-memory.dmp

Filesize
40KB

Download
memory/888-56-0x00000000051F0000-0x0000000005292000-memory.dmp

Filesize
648KB

Download
memory/1500-69-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-63-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-67-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-60-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-64-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-62-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-59-0x0000000000400000-0x000000000049A000-memory.dmp

Filesize
616KB

Download
memory/1500-70-0x00000000003B0000-0x00000000003F4000-memory.dmp

Filesize
272KB

Download
memory/1500-71-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download
memory/1500-72-0x0000000004E35000-0x0000000004E46000-memory.dmp

Filesize
68KB

Download
memory/1500-73-0x00000000007D0000-0x00000000007E4000-memory.dmp

Filesize
80KB

Download