0c21133a8b332f0462ae88430a615fce1447cc49f8b18fee274baa64b6d0c8cd | Triage

Analysis

max time kernel
86s
max time network
91s
platform
windows11-21h2_x64
resource
win11-20240214-en
resource tags

arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system
submitted
17-02-2024 05:28

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General

Target

UltimMC/zlib1.dll
Size

73KB
MD5

c7d4d685a0af2a09cbc21cb474358595
SHA1

b784599c82bb90d5267fd70aaa42acc0c614b5d2
SHA256

e96b397b499d9eaa3f52eaf496ca8941e80c0ad1544879ccadf02bf2c6a1ecfc
SHA512

fed2c126a499fae6215e0ef7d76aeec45b60417ed11c7732379d1e92c87e27355fe8753efed86af4f58d52ea695494ef674538192fac1e8a2a114467061a108b
SSDEEP

1536:+4nToIf2W/nkQRZHaamLQHoIOah7Vryh7IO4cZlIXw6Epb:bTBfHdRZH9mLQHuaBVGn4FXw6E1

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1724 3660 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 3996 wrote to memory of 3660	3996	rundll32.exe	rundll32.exe
PID 3996 wrote to memory of 3660	3996	rundll32.exe	rundll32.exe
PID 3996 wrote to memory of 3660	3996	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\UltimMC\zlib1.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3996

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\UltimMC\zlib1.dll,#1
2⤵
PID:3660

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3660 -s 448
3⤵
- Program crash
PID:1724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3660 -ip 3660
1⤵
PID:1424

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/3660-0-0x0000000061B80000-0x0000000061B98000-memory.dmp

Filesize
96KB

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