404keylogger | 85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d

General

Target

85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe
Size

332KB
MD5

173ec773d0b146dfb249629550901ded
SHA1

7bfa3586a135f95dba15b00385d8eec2f838d2be
SHA256

85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d
SHA512

a2a82ce38c42faa77acf038fecc7c95c1729d5d49ccbd6eb36e24d5f61c0435c633ba217cbde54df02623dc0092e4555c14b809ba0095d74a88ee123b956480f

Score

10^/10

404keylogger collection keylogger persistence stealer

Malware Config

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/1996-135-0x0000000000400000-0x0000000000422000-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	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1101907861-274115917-2188613224-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.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\HdfgI = "C:\\Users\\Admin\\AppData\\Local\\HdfgIH\\HdfgIHBpE.hta"	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.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 4888 set thread context of 1996	4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe	82

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4712	1996	WerFault.exe	82

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1996	InstallUtil.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1996	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1996	InstallUtil.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4888 wrote to memory of 1996	4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe	82
PID 4888 wrote to memory of 1996	4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe	82
PID 4888 wrote to memory of 1996	4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe	82
PID 4888 wrote to memory of 1996	4888	85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe	82

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	InstallUtil.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	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe
"C:\Users\Admin\AppData\Local\Temp\85e6b8d717a4665d3e698c5c262e702daea50d296da35fdf6ca0c58ff5a71b5d.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4888
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\\Microsoft.NET\\Framework\\v4.0.30319\\InstallUtil.exe"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1996 -s 1876
    3⤵
    - Program crash
    PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1996 -ip 1996
1⤵
PID:4100

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/1996-135-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/1996-136-0x0000000005540000-0x00000000055DC000-memory.dmp

Filesize
624KB

Download
memory/1996-137-0x00000000064E0000-0x0000000006546000-memory.dmp

Filesize
408KB

Download
memory/1996-138-0x0000000006B60000-0x0000000006D22000-memory.dmp

Filesize
1.8MB

Download
memory/4888-130-0x0000000000D60000-0x0000000000DBA000-memory.dmp

Filesize
360KB

Download
memory/4888-131-0x0000000005820000-0x00000000058B2000-memory.dmp

Filesize
584KB

Download
memory/4888-132-0x0000000005E70000-0x0000000006414000-memory.dmp

Filesize
5.6MB

Download
memory/4888-134-0x00000000058C0000-0x0000000005E64000-memory.dmp

Filesize
5.6MB

Download

Analysis

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