92568303c5f9880d3c36c8f1e25516f1d51809598394fcc3b39f3cf36afd03d5 | Triage

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-03-2024 08:35

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General

Target

wtsapi32.dll
Size

121KB
MD5

b1d8282fddc1c1111860c4493c3347df
SHA1

1d946246771e30cf1edd4b0a9e23492c8bf3984c
SHA256

a7228c24d23b34a8c49bbf305980890b6648f5905a5b63679234e6146d7ebe02
SHA512

30240088a4000bc48a5e00b916d547145c86bb47351f7d04687f8f2f53390b824bcfb86a2478aecba2e086a61861b681d523dd932cbe4318836175d98937b63a
SSDEEP

3072:7LwqdOuKvQLH2UEXh8AdBDSKRkqKzrVXn:7LwqaKEaAGzrVXn

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

FileCoAuth.exe

pid process

2980 FileCoAuth.exe
Loads dropped DLL 1 IoCs

Processes:

rundll32.exe

pid process

2356 rundll32.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2208 wrote to memory of 2356	2208	rundll32.exe	rundll32.exe
PID 2356 wrote to memory of 2980	2356	rundll32.exe	FileCoAuth.exe
PID 2356 wrote to memory of 2980	2356	rundll32.exe	FileCoAuth.exe
PID 2356 wrote to memory of 2980	2356	rundll32.exe	FileCoAuth.exe
PID 2356 wrote to memory of 2980	2356	rundll32.exe	FileCoAuth.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\wtsapi32.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2208

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\wtsapi32.dll,#1
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2356

C:\users\Admin\appdata\local\Microsoft\PlayReady\FileCoAuth.exe
"C:\users\Admin\appdata\local\Microsoft\PlayReady\FileCoAuth.exe"
3⤵
- Executes dropped EXE
PID:2980

MITRE ATT&CK Matrix

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Downloads

\Users\Admin\AppData\Local\Microsoft\PlayReady\FileCoAuth.exe
Filesize
43KB

MD5
51138beea3e2c21ec44d0932c71762a8

SHA1
8939cf35447b22dd2c6e6f443446acc1bf986d58

SHA256
5ad3c37e6f2b9db3ee8b5aeedc474645de90c66e3d95f8620c48102f1eba4124

SHA512
794f30fe452117ff2a26dc9d7086aaf82b639c2632ac2e381a81f5239caaec7c96922ba5d2d90bfd8d74f0a6cd4f79fbda63e14c6b779e5cf6834c13e4e45e7d

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