23a66b32dfa75a94036870a1dce0bfabe6b52331eb2bed02e6953b9fead97298 | Triage

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 11:53

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General

Target

grpc_csharp_ext.x86.dll
Size

9.5MB
MD5

5375b505f0463930ee8ea2254b477deb
SHA1

b114bc70840fcfd7bb60ecacffa1944f23a459ff
SHA256

f6a6b19a8ea19e51cd4fb8e120a8b3df609429193653618e56d24c5d9704e56c
SHA512

2ce74bb9cafb182e0052cefbc5b40c0cebc6df31df80df59cd1be9affab53e274d75133327903fe3d8828f09225b20d48e3e2fc58bb58a4d17f542c5d6e7f7d4
SSDEEP

98304:ht0TyUQmSCXRLO0KmlsunPzBVhgH01n/QoDD:hwQmSCB3Kmlsq1

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1692	4972	WerFault.exe	83

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3316 wrote to memory of 4972	3316	rundll32.exe	83
PID 3316 wrote to memory of 4972	3316	rundll32.exe	83
PID 3316 wrote to memory of 4972	3316	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\grpc_csharp_ext.x86.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3316
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\grpc_csharp_ext.x86.dll,#1
  2⤵
  PID:4972
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4972 -s 632
    3⤵
    - Program crash
    PID:1692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4972 -ip 4972
1⤵
PID:2852

Network

MITRE ATT&CK Matrix

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