masslogger | 7494beb1fee29665bd22f4d346c00a5ffc443f55115d9bc4127144073f5213e4

General

Target

7xzfZF3ytRSjYKH.exe
Size

764KB
MD5

c1bc6e48612fc775cf6bdcb6cb037f87
SHA1

b02ccd068ac1120873abd28f1d9e356417bfbc11
SHA256

f98b35d218026beac9f13d886758bb0712fda3dc74ae7fbc5b29ce5fb63109ab
SHA512

9b98f89fb8d17dca762315bac8a4ad217d1f9984088f4e60d1307284e35cb3cae2eec6191f1b58fbeb7339405ea78e6d8bb082ce4f02663884c74e43aa24efdb

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 v2.0.0.0 ################################################################# ### Logger Details ### 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 4:08:14 AM MassLogger Started: 5/21/2022 4:08:07 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\7xzfZF3ytRSjYKH.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

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:

7xzfZF3ytRSjYKH.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	7xzfZF3ytRSjYKH.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:

7xzfZF3ytRSjYKH.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	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	7xzfZF3ytRSjYKH.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	7xzfZF3ytRSjYKH.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	7xzfZF3ytRSjYKH.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	7xzfZF3ytRSjYKH.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:

7xzfZF3ytRSjYKH.exe

description pid process target process

PID 1564 set thread context of 1976 1564 7xzfZF3ytRSjYKH.exe 7xzfZF3ytRSjYKH.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

7xzfZF3ytRSjYKH.exe7xzfZF3ytRSjYKH.exe

pid process

1564 7xzfZF3ytRSjYKH.exe
1564 7xzfZF3ytRSjYKH.exe
1976 7xzfZF3ytRSjYKH.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

7xzfZF3ytRSjYKH.exe7xzfZF3ytRSjYKH.exe

description pid process

Token: SeDebugPrivilege 1564 7xzfZF3ytRSjYKH.exe
Token: SeDebugPrivilege 1976 7xzfZF3ytRSjYKH.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1564 set thread context of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe

pid	process
1564	7xzfZF3ytRSjYKH.exe
1564	7xzfZF3ytRSjYKH.exe
1976	7xzfZF3ytRSjYKH.exe

description	pid	process
Token: SeDebugPrivilege	1564	7xzfZF3ytRSjYKH.exe
Token: SeDebugPrivilege	1976	7xzfZF3ytRSjYKH.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

7xzfZF3ytRSjYKH.exe

description	pid	process	target process
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe
PID 1564 wrote to memory of 1976	1564	7xzfZF3ytRSjYKH.exe	7xzfZF3ytRSjYKH.exe

outlook_office_path 1 IoCs

Processes:

7xzfZF3ytRSjYKH.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	7xzfZF3ytRSjYKH.exe

outlook_win_path 1 IoCs

Processes:

7xzfZF3ytRSjYKH.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	7xzfZF3ytRSjYKH.exe

C:\Users\Admin\AppData\Local\Temp\7xzfZF3ytRSjYKH.exe
"C:\Users\Admin\AppData\Local\Temp\7xzfZF3ytRSjYKH.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1564
- C:\Users\Admin\AppData\Local\Temp\7xzfZF3ytRSjYKH.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:1976

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/1564-54-0x0000000001090000-0x0000000001156000-memory.dmp

Filesize
792KB

Download
memory/1564-55-0x00000000763B1000-0x00000000763B3000-memory.dmp

Filesize
8KB

Download
memory/1564-56-0x0000000000410000-0x0000000000420000-memory.dmp

Filesize
64KB

Download
memory/1564-57-0x00000000057D0000-0x000000000585A000-memory.dmp

Filesize
552KB

Download
memory/1564-58-0x0000000005BA0000-0x0000000005C2E000-memory.dmp

Filesize
568KB

Download
memory/1976-59-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-60-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-62-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-63-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-64-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-65-0x00000000004894CE-mapping.dmp

Download
memory/1976-67-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-69-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/1976-70-0x0000000000620000-0x0000000000664000-memory.dmp

Filesize
272KB

Download
memory/1976-72-0x0000000000B80000-0x0000000000B94000-memory.dmp

Filesize
80KB

Download
memory/1976-73-0x0000000004CF5000-0x0000000004D06000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads