404keylogger | 6a18a0c24a8fbf096c78a015fe26ffb799b301addcfc899a27037ff5478d266c

General

Target

4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
Size

646KB
MD5

311102ca55b09ee930cfceca5e4c06da
SHA1

8fbe0182c4ae39acb97a23f16b5d758b4183ad4b
SHA256

4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d
SHA512

0e812ff97fb68c2d635a681d12d21b997e81bb9a442bf1c375d7a459c1785bb355cb62227bb15672cd7146437d8f5274da8e348170c5570d247def339b8b73ee
SSDEEP

12288:6GvZepMqJ07C6YHyrn9baFbUBXrVAlLSjujRJK/sJ2:6IgpM+F6YHyDYFYUNSVA2

Score

10^/10

404keylogger collection keylogger spyware stealer upx

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
us2.smtp.mailhostbox.com
Port:
587
Username:
[email protected]
Password:
eJkG%KP9

Signatures

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

404 Keylogger Main Executable 5 IoCs

resource	yara_rule
behavioral2/memory/1648-137-0x0000000000400000-0x0000000000450000-memory.dmp	family_404keylogger
behavioral2/memory/1648-138-0x0000000000900000-0x0000000000922000-memory.dmp	family_404keylogger
behavioral2/memory/1648-139-0x0000000000900000-0x0000000000922000-memory.dmp	family_404keylogger
behavioral2/memory/1648-140-0x0000000000400000-0x0000000000450000-memory.dmp	family_404keylogger
behavioral2/memory/1648-157-0x0000000000400000-0x0000000000450000-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

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1648-133-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/1648-136-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/1648-137-0x0000000000400000-0x0000000000450000-memory.dmp	upx
behavioral2/memory/1648-140-0x0000000000400000-0x0000000000450000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.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
7	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4320 set thread context of 1648	4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe	82

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4660	1648	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
1648	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
1648	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1648	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4320 wrote to memory of 1648	4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe	82
PID 4320 wrote to memory of 1648	4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe	82
PID 4320 wrote to memory of 1648	4320	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe	82

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2805025096-2326403612-4231045514-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe

C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
"C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe
  "C:\Users\Admin\AppData\Local\Temp\4d10520e2b80ca42e98590435c36c5409a458d9a5bd0ad35b0f444d2ceb2626d.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: RenamesItself
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1648
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1648 -s 2224
    3⤵
    - Program crash
    PID:4660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1648 -ip 1648
1⤵
PID:3876

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

3

T1081

Discovery

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1648-140-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1648-154-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/1648-136-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1648-137-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1648-138-0x0000000000900000-0x0000000000922000-memory.dmp

Filesize
136KB

Download
memory/1648-139-0x0000000000900000-0x0000000000922000-memory.dmp

Filesize
136KB

Download
memory/1648-159-0x0000000000450000-0x0000000000519000-memory.dmp

Filesize
804KB

Download
memory/1648-152-0x0000000004A90000-0x0000000004B2C000-memory.dmp

Filesize
624KB

Download
memory/1648-133-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1648-153-0x0000000004C00000-0x0000000004C10000-memory.dmp

Filesize
64KB

Download
memory/1648-151-0x0000000004C40000-0x00000000051E4000-memory.dmp

Filesize
5.6MB

Download
memory/1648-155-0x00000000061A0000-0x0000000006362000-memory.dmp

Filesize
1.8MB

Download
memory/1648-157-0x0000000000400000-0x0000000000450000-memory.dmp

Filesize
320KB

Download
memory/1648-158-0x0000000006590000-0x0000000006622000-memory.dmp

Filesize
584KB

Download
memory/4320-135-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download

Analysis

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