a213e0faf45cabad343b34a05a65ef437bed06fdf392a01a25b28def670a70e2 | Triage

Analysis

max time kernel
150s
max time network
156s
platform
windows11-21h2_x64
resource
win11-20240319-en
resource tags

arch:x64arch:x86image:win11-20240319-enlocale:en-usos:windows11-21h2-x64system
submitted
02-04-2024 20:56

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General

Target

$PLUGINSDIR/BgWorker.dll
Size

2KB
MD5

33ec04738007e665059cf40bc0f0c22b
SHA1

4196759a922e333d9b17bda5369f14c33cd5e3bc
SHA256

50f735ab8f3473423e6873d628150bbc0777be7b4f6405247cddf22bb00fb6be
SHA512

2318b01f0c2f2f021a618ca3e6e5c24a94df5d00154766b77160203b8b0a177c8581c7b688ffe69be93a69bc7fd06b8a589844d42447f5060fb4bcf94d8a9aef

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4948	492	WerFault.exe	77

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4892 wrote to memory of 492	4892	rundll32.exe	77
PID 4892 wrote to memory of 492	4892	rundll32.exe	77
PID 4892 wrote to memory of 492	4892	rundll32.exe	77

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4892
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\BgWorker.dll,#1
  2⤵
  PID:492
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 492 -s 452
    3⤵
    - Program crash
    PID:4948

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 492 -ip 492
1⤵
PID:4720

Network

MITRE ATT&CK Matrix

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