18fb1efac7a965e3be1b7c090324e291fcdaba65ec213619d245aa4aa54387ba | Triage

Analysis

max time kernel
148s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 14:05

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General

Target

api-ms-win-core-file-l1-1-0.dll
Size

21KB
MD5

eefe86b5a3ab256beed8621a05210df2
SHA1

90c1623a85c519adbc5ef67b63354f881507b8a7
SHA256

1d1c11fc1ad1febf9308225c4ccf0431606a4ab08680ba04494d276cb310bf15
SHA512

c326a2ca190db24e8e96c43d1df58a4859a32eb64b0363f9778a8902f1ac0307dca585be04f831a66bc32df54499681ad952ce654d607f5fdb93e9b4504d653f
SSDEEP

384:Y6PvVX7W1hWC1m0GftpBj4xm3SBvlmTwhsH:jPvVXeTVic1i

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4860	3892	WerFault.exe	83

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4220 wrote to memory of 3892	4220	rundll32.exe	83
PID 4220 wrote to memory of 3892	4220	rundll32.exe	83
PID 4220 wrote to memory of 3892	4220	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-core-file-l1-1-0.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4220
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\api-ms-win-core-file-l1-1-0.dll,#1
  2⤵
  PID:3892
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3892 -s 600
    3⤵
    - Program crash
    PID:4860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3892 -ip 3892
1⤵
PID:2376

Network

MITRE ATT&CK Matrix

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