88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7f

General

Target

88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
Size

81KB
MD5

b93fcdd91a7f9848258fdc9ffae92390
SHA1

ac3f042b559519f094b1338518517cada99eb841
SHA256

88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7f
SHA512

5a2f2a0c8da6c4400c613c4724f1b9590f4b162574b872ae8c3256b9f01fa8f757b50e95a423e9f16b409b80ed5cbfbe800302e96bb2d56d4ea119268e1fae39
SSDEEP

1536:abSshapMJgKJUuxGmfJPtOgqm1s/XZSWcHU:K25KJFjfJPtOgqm2/XZXB

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2744	winlgon.exe

Loads dropped DLL 9 IoCs

pid	Process
2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
3028	WerFault.exe
3028	WerFault.exe
3028	WerFault.exe
3028	WerFault.exe
3028	WerFault.exe
3028	WerFault.exe
3028	WerFault.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3028	2744	WerFault.exe	30
2536	2232	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlgon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
2744	winlgon.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2232 wrote to memory of 2744	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	30
PID 2232 wrote to memory of 2744	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	30
PID 2232 wrote to memory of 2744	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	30
PID 2232 wrote to memory of 2744	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	30
PID 2744 wrote to memory of 3028	2744	winlgon.exe	31
PID 2744 wrote to memory of 3028	2744	winlgon.exe	31
PID 2744 wrote to memory of 3028	2744	winlgon.exe	31
PID 2744 wrote to memory of 3028	2744	winlgon.exe	31
PID 2232 wrote to memory of 2536	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	32
PID 2232 wrote to memory of 2536	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	32
PID 2232 wrote to memory of 2536	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	32
PID 2232 wrote to memory of 2536	2232	88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe	32

C:\Users\Admin\AppData\Local\Temp\88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe
"C:\Users\Admin\AppData\Local\Temp\88dd5114f472d1ce3bef5c38f2e1a6d81e7952ec4c1f39938345823c5f33ef7fN.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2232
- \??\c:\users\admin\appdata\local\temp\winlgon.exe
  c:\users\admin\appdata\local\temp\winlgon.exe
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2744 -s 256
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:3028
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2232 -s 204
  2⤵
  - Program crash
  PID:2536

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\winlgon.exe

Filesize
81KB

MD5
754be0bd38bc0c6d33f579be0afa0c76

SHA1
c79539ed55dac9fa4cc8564d647c5332ce19e6b5

SHA256
eaa935984b546541a4ee1f9668427a1446eb847e458e8cca81cf3251050384c8

SHA512
71ff66310066bd002011664b891dd2a3c7a5a76a63fa3fb36774c3b09c5d8a210a346b4b2aec5d89c1db71dd91942d91e33f1ba28505d26049ceda523b999228

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads