masslogger | e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453

General

Target

e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Size

825KB
MD5

dfcf1620885540dfa1da2cb26a8d68e8
SHA1

ee389b7a189ce6ec72e31eaba77917c6d281dd9f
SHA256

e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453
SHA512

e1dd16ccf083039d3a658577d5f3235af1c97f308409da4c0b8e2ceaea70e8617f3c74a134756c5c956db97ecefe46d49bb097d9bed4cb1be76b4eb8307d298d

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.0 ################################################################# ### 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: 5/24/2022 4:37:25 PM MassLogger Started: 5/24/2022 4:37:19 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe MassLogger Melt: false MassLogger Exit after delivery: true As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
akachukwu123@

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/2024-61-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/2024-62-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/2024-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/2024-64-0x00000000004A2AFE-mapping.dmp	family_masslogger
behavioral1/memory/2024-66-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/2024-68-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

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

rezer0

resource	yara_rule
behavioral1/memory/388-57-0x0000000005BF0000-0x0000000005CA0000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.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

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	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.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 388 set thread context of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2024	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2024	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28
PID 388 wrote to memory of 2024	388	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe	28

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.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	e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe

C:\Users\Admin\AppData\Local\Temp\e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
"C:\Users\Admin\AppData\Local\Temp\e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:388
- C:\Users\Admin\AppData\Local\Temp\e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe
  "C:\Users\Admin\AppData\Local\Temp\e5fad7b30edf2cac81f8d5ef6b286041ee0b0d5fb4dd29f78a9ca2bc62f1a453.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2024

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

Loading Replay Monitor...

Downloads

memory/388-54-0x00000000013B0000-0x0000000001484000-memory.dmp

Filesize
848KB

Download
memory/388-55-0x0000000076C81000-0x0000000076C83000-memory.dmp

Filesize
8KB

Download
memory/388-56-0x0000000000830000-0x0000000000838000-memory.dmp

Filesize
32KB

Download
memory/388-57-0x0000000005BF0000-0x0000000005CA0000-memory.dmp

Filesize
704KB

Download
memory/2024-58-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2024-69-0x00000000004E0000-0x0000000000524000-memory.dmp

Filesize
272KB

Download
memory/2024-71-0x0000000000DF5000-0x0000000000E06000-memory.dmp

Filesize
68KB

Download
memory/2024-72-0x0000000000980000-0x0000000000994000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads