edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
19/09/2024, 03:10

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General

Target

edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe
Size

81KB
MD5

5fb65864aa81e256ee4a50cefdf2d086
SHA1

48ec49aa41839205e8bef59d235266093be2d276
SHA256

edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3
SHA512

8b098dfe5e1dcfeb0378c9cb026e5b1f873377b6d8ff6f14aaba16cbe372cdc4ecfc376a4384e4420a2e0190c80a4ee4c11c2779648e86bed38edcc3a99700bd
SSDEEP

1536:abSshapMJgKJUuxGmfJPtOgqm1s/XZSWcH7:K25KJFjfJPtOgqm2/XZX6

Score

7^/10

discovery persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
536	winlgon.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\USER\S-1-5-21-1194130065-3471212556-1656947724-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\winlgon.exe = "c:\\users\\admin\\appdata\\local\\temp\\winlgon.exe"	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4596	536	WerFault.exe	82
4344	3672	WerFault.exe	81

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	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	winlgon.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3672	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe
536	winlgon.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 536	3672	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe	82
PID 3672 wrote to memory of 536	3672	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe	82
PID 3672 wrote to memory of 536	3672	edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe	82

C:\Users\Admin\AppData\Local\Temp\edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe
"C:\Users\Admin\AppData\Local\Temp\edcf3e3690b274df803bad164ea4aa4016ae8750b8350483b73dd198e79764d3.exe"
1⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3672
- \??\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
  PID:536
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 536 -s 676
    3⤵
    - Program crash
    PID:4596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 520
  2⤵
  - Program crash
  PID:4344

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 536 -ip 536
1⤵
PID:1060

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 3672 -ip 3672
1⤵
PID:1240

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
81KB

MD5
629b166a0ae9c2cc22d36cd1d83620ed

SHA1
c3859f0b9a6f24984a156f39bc807b265396d44e

SHA256
7cc8fb9c6c8c9f01a3e2afe4728830f628738189df0cd45d534cdc6b2c99f0b4

SHA512
0f088fd437ce774b8ef84e06c9da6ca69545f029e6de215a4e5859889583fa89edaa81cfe0f9b896fd16e74b0309bdbcd1b4e63db2db2a42e906cce7f147815c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads