243b8fc6ed8a4be1109fef481d20293405c4dd9614f3f4e78debfaefb2d18137 | Triage

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
12-07-2024 08:00

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General

Target

yrcvb.dll
Size

11KB
MD5

ce58ee918da61b9ad6d17ea883108b75
SHA1

ba22489f71b94f0593bb02a89668aa293ce4ca8b
SHA256

1175fe7473ab4675f5197a3a5271c095f2a0ad01ee5e55a728c0f208adaeef01
SHA512

fa452aeffcb848f4e62a7f3df2ae10dfdc75bb49e3b80e8af076056ea648b438a98a625d951c4b769cc2ffa85742d150aa45290749779dbdc7005bbacdd0ef7a
SSDEEP

192:ZI8C/wIQVYQYjRz9D3z6w0zUJIfEairMoHO+EaXLAg:ZK/wIQVYtDmwq+IfC4+EaXL

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2108	1096	WerFault.exe	83

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe
1096	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 868 wrote to memory of 1096	868	rundll32.exe	83
PID 868 wrote to memory of 1096	868	rundll32.exe	83
PID 868 wrote to memory of 1096	868	rundll32.exe	83

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:868
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\yrcvb.dll,#1
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  PID:1096
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1096 -s 676
    3⤵
    - Program crash
    PID:2108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1096 -ip 1096
1⤵
PID:1672

Network

MITRE ATT&CK Matrix

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Downloads

memory/1096-0-0x0000000074A40000-0x0000000074A46000-memory.dmp

Filesize
24KB

Download
memory/1096-1-0x0000000074A40000-0x0000000074A46000-memory.dmp

Filesize
24KB

Download