97cf70062f25b360a517a632165ac3d0f0a28de8cc332438694be046db8d349c | Triage

Analysis

max time kernel
140s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
16-05-2024 02:29

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General

Target

IEProxy.dll
Size

60KB
MD5

d4b84356bdd1621ee021a886a3a4cbe2
SHA1

de320fae55cbec111d1157ac13c8e199d0367013
SHA256

0b423de2edd113b68f159e70d50630c607fd61d18eb5a05ce5586c6228d38c44
SHA512

181ad864fe9802f900d0aaf95aa8b4c96ecbd3c37f1ed53f8a90610c0da135bc68322b0358fd555b66967f9e720768704d8cd512b8b3b1521c507b3de3148097
SSDEEP

1536:UZy5Ylu4ga8rHtz0DySidaFixpOt0jS/G:Legxa0paidaFsOto

Score

5^/10

Malware Config

Signatures

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\mylkx.dat	rundll32.exe
File opened for modification	C:\Windows\SysWOW64\Log	rundll32.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4880	4264	WerFault.exe	90

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3712 wrote to memory of 4264	3712	rundll32.exe	90
PID 3712 wrote to memory of 4264	3712	rundll32.exe	90
PID 3712 wrote to memory of 4264	3712	rundll32.exe	90

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\IEProxy.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3712
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\IEProxy.dll,#1
  2⤵
  - Drops file in System32 directory
  PID:4264
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4264 -s 708
    3⤵
    - Program crash
    PID:4880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 368 -p 4264 -ip 4264
1⤵
PID:1416

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4076 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
1⤵
PID:3740

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/4264-1-0x0000000002750000-0x0000000002795000-memory.dmp

Filesize
276KB

Download
memory/4264-2-0x00000000027B0000-0x00000000027C6000-memory.dmp

Filesize
88KB

Download
memory/4264-4-0x00000000027E0000-0x0000000002818000-memory.dmp

Filesize
224KB

Download
memory/4264-6-0x0000000002830000-0x0000000002840000-memory.dmp

Filesize
64KB

Download