404keylogger | f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8

General

Target

f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe
Size

130KB
MD5

57ba94b8b52a58444b8d371cfa0949f9
SHA1

30e862404054d63fefc03916b0fd0c5155b817f2
SHA256

f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8
SHA512

6eeb2fda44ee0e6aacd1686538bd1920f160fbfc6694f637024dfe4c478d750fce48fb3fc8698b223f6a0c8687c1ecb614539fe710dd6fc2d8052caa8c8c64aa

Score

10^/10

404keylogger collection keylogger persistence stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.privateemail.com
Port:
587
Username:
[email protected]
Password:
]WqfQ8cSP2)6O

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/4300-134-0x0000000000400000-0x0000000000422000-memory.dmp	family_404keylogger

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CndMq = "C:\\Users\\Admin\\AppData\\Local\\CndMqk\\CndMqkmDL.hta"	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.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
15	checkip.dyndns.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3896 set thread context of 4300	3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4672	4300	WerFault.exe	80

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
4300	RegSvcs.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4300	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4300	RegSvcs.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 4300	3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe	80
PID 3896 wrote to memory of 4300	3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe	80
PID 3896 wrote to memory of 4300	3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe	80
PID 3896 wrote to memory of 4300	3896	f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe	80

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegSvcs.exe

C:\Users\Admin\AppData\Local\Temp\f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe
"C:\Users\Admin\AppData\Local\Temp\f6cfa0f73d0631c0523d5f26ae6a808f50c8966158f462f62e0f6c0dccf82ce8.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3896
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\RegSvcs.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:4300
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4300 -s 2116
    3⤵
    - Program crash
    PID:4672

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4300 -ip 4300
1⤵
PID:4652

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

1

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/3896-130-0x00000000008A0000-0x00000000008C6000-memory.dmp

Filesize
152KB

Download
memory/3896-131-0x00000000050D0000-0x0000000005162000-memory.dmp

Filesize
584KB

Download
memory/3896-132-0x0000000005760000-0x0000000005D04000-memory.dmp

Filesize
5.6MB

Download
memory/3896-135-0x00000000051B0000-0x000000000520F000-memory.dmp

Filesize
380KB

Download
memory/4300-134-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/4300-136-0x00000000051D0000-0x000000000526C000-memory.dmp

Filesize
624KB

Download
memory/4300-137-0x0000000005F90000-0x0000000005FF6000-memory.dmp

Filesize
408KB

Download
memory/4300-138-0x0000000006710000-0x00000000068D2000-memory.dmp

Filesize
1.8MB

Download

Analysis

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