404keylogger | 71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62

General

Target
71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
Size 110KB
Sample220205-rqqqmscbf3
SHA256 71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62
MD5 eb85faec66c8d936b6b8ae45f9fdbea2
SHA1 e02e71cbc0174b5c67774687a84eb6f99871dcd4
SHA512 fda8f4d4d04ba85b6759b57b447fab70f5013d865ecab177a12f0c6848a6fac47c93af3c8aed218af9a9bf8c58eb269eea99fa327c574cde05761ea83c4e58ab
MD5 SHA1 SHA512

Score

10^/10

404keylogger collection keylogger spyware stealer

Malware Config

Extracted

Credentials

Protocol
smtp
Host
us2.smtp.mailhostbox.com
Port
587
Username
[email protected]
Password
Kgd#j*y3

Signatures

404 Keylogger
Information stealer and keylogger first seen in 2019.
stealer keylogger 404keylogger

404 Keylogger Main Executable 1 IoCs

resource	yara_rule
behavioral2/memory/5016-130-0x0000000000E90000-0x0000000000EB2000-memory.dmp	family_404keylogger

Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs

description	pid	Process	procid_target
PID 4156 created 5016	4156	WerFault.exe	81

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
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 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.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
18	checkip.dyndns.org

Drops file in Windows directory 6 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.jfm	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\ReportingEvents.log	svchost.exe
File opened for modification	C:\Windows\WindowsUpdate.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.chk	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\Logs\edb.log	svchost.exe
File opened for modification	C:\Windows\SoftwareDistribution\DataStore\DataStore.edb	svchost.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
444	5016	WerFault.exe	81

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WerFault.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WerFault.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WerFault.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
5016	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
444	WerFault.exe
444	WerFault.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	5016	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
Token: SeShutdownPrivilege	1988	svchost.exe
Token: SeCreatePagefilePrivilege	1988	svchost.exe
Token: SeShutdownPrivilege	1988	svchost.exe
Token: SeCreatePagefilePrivilege	1988	svchost.exe
Token: SeShutdownPrivilege	1988	svchost.exe
Token: SeCreatePagefilePrivilege	1988	svchost.exe
Token: SeRestorePrivilege	444	WerFault.exe
Token: SeBackupPrivilege	444	WerFault.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5016	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4156 wrote to memory of 5016	4156	WerFault.exe	81
PID 4156 wrote to memory of 5016	4156	WerFault.exe	81

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1346565761-3498240568-4147300184-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe

C:\Users\Admin\AppData\Local\Temp\71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe
"C:\Users\Admin\AppData\Local\Temp\71f19c999587e61ce4920acbf525240c30bf3b433d4e8f48d8ba5b5e00d65d62.exe"
1⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:5016
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 5016 -s 2204
  2⤵
  - Program crash
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:444

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k netsvcs -p -s wuauserv
1⤵
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:1988

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 5016 -ip 5016
1⤵
- Suspicious use of NtCreateProcessExOtherParentProcess
- Suspicious use of WriteProcessMemory
PID:4156

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1988-149-0x00000194E1950000-0x00000194E1954000-memory.dmp

Download

memory/5016-130-0x0000000000E90000-0x0000000000EB2000-memory.dmp

Download

memory/5016-131-0x0000000005E30000-0x00000000063D4000-memory.dmp

Download

memory/5016-132-0x0000000005920000-0x00000000059BC000-memory.dmp

Download

memory/5016-133-0x0000000006910000-0x0000000006976000-memory.dmp

Download

memory/5016-134-0x0000000005880000-0x0000000005E24000-memory.dmp

Download

memory/5016-135-0x0000000006F90000-0x0000000007152000-memory.dmp

Download

memory/5016-136-0x0000000007260000-0x00000000072F2000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads