404keylogger | f47e8cf02f856c487fd8f832ba0de87778eeb4e8bcb405407b4145b2050879e7

General

Target

DOC29309.exe
Size

283KB
MD5

92b37680ac5c24374bafb7db5be4fd0a
SHA1

df08457d10f1ffea52d7115d5b0a498509e5a72a
SHA256

f5ce2ee6334c46aae1d42e65626227232ca319a3a4c7e6388df99b0bc7da646e
SHA512

4e05d6e3c0f7aa45de04c508db58476c9a7ab9a52fc6d9d59874193c8629b4bba3e430b6c1096fdd6952e794893699e2143fc0918e833ad1f92dacde9817d9fb

Score

10^/10

404keylogger collection keylogger persistence spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.ionos.es
Port:
587
Username:
b.goicoechea@amyavigo.es
Password:
75457545bg

Signatures

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

404 Keylogger Main Executable 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/892-64-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger
behavioral1/memory/892-65-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger
behavioral1/memory/892-66-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger
behavioral1/memory/892-67-0x000000000041D12E-mapping.dmp	family_404keylogger
behavioral1/memory/892-69-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger
behavioral1/memory/892-71-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger

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

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

DOC29309.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows defender.exe = "\"C:\\Users\\Admin\\Windows defender.exe.exe\""	DOC29309.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

3 checkip.dyndns.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

DOC29309.exe

description pid process target process

PID 536 set thread context of 892 536 DOC29309.exe RegAsm.exe

flow	ioc
3	checkip.dyndns.org

description	pid	process	target process
PID 536 set thread context of 892	536	DOC29309.exe	RegAsm.exe

Modifies system certificate store 2 TTPs 2 IoCs

evasion spyware trojan

Install Root Certificate

T1130

Modify Registry

T1112

Processes:

RegAsm.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436	RegAsm.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

Processes:

DOC29309.exeRegAsm.exe

pid	process
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
536	DOC29309.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe
892	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

DOC29309.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 536 DOC29309.exe
Token: SeDebugPrivilege 892 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

892 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	536	DOC29309.exe
Token: SeDebugPrivilege	892	RegAsm.exe

pid	process
892	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

DOC29309.exe

description	pid	process	target process
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe
PID 536 wrote to memory of 892	536	DOC29309.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

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

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\DOC29309.exe
"C:\Users\Admin\AppData\Local\Temp\DOC29309.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Accesses Microsoft Outlook profiles
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:892

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Install Root Certificate

1

T1130

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

3

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

memory/536-54-0x0000000000B10000-0x0000000000B5E000-memory.dmp

Filesize
312KB

Download
memory/536-55-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/536-56-0x0000000000270000-0x0000000000278000-memory.dmp

Filesize
32KB

Download
memory/536-57-0x0000000000580000-0x00000000005A8000-memory.dmp

Filesize
160KB

Download
memory/536-58-0x00000000002E0000-0x00000000002F6000-memory.dmp

Filesize
88KB

Download
memory/536-59-0x0000000000990000-0x00000000009A6000-memory.dmp

Filesize
88KB

Download
memory/536-60-0x0000000000A50000-0x0000000000A62000-memory.dmp

Filesize
72KB

Download
memory/892-61-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-62-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-64-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-65-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-66-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-67-0x000000000041D12E-mapping.dmp

Download
memory/892-69-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-71-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/892-73-0x0000000000C25000-0x0000000000C36000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads