aa8ff4d4c4505f9245ae995be2fee8f6a78b1167126e613490e1c22549bdf142 | Triage

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24-03-2024 01:24

240324-bsrsqaff36 4

24-03-2024 01:15

240324-bmcrlsaa8z 4

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240319-en
resource tags

arch:x64arch:x86image:win10v2004-20240319-enlocale:en-usos:windows10-2004-x64system
submitted
24-03-2024 01:15

Sharing

Report Analysis Logs

General

Target

$PLUGINSDIR/shell_downloader.dll
Size

2.2MB
MD5

30c4aa9356d60d2039ed6bfb7850c4c1
SHA1

ef23c32dab6ed871527151932bbfe8b917d507af
SHA256

0c4abb66d9a69c80cfaa0eb3c988d4dc40d989843a87e95ed3cc6e75dae31559
SHA512

f425c9fcefd2ed55160d173b8e441f7867307fd006b0f01a655120ba150d87568ddc6266d36163267ce508df8147a97c16982093808c766051ca1e02ba9cc62b
SSDEEP

49152:6oiR6tzluS2KbICD13Nw2FiBLROWnhJV:6oiR+zDhbB19w+i1ROW

Score

3^/10

Malware Config

Signatures

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1584 2408 WerFault.exe rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

rundll32.exe

description	pid	process	target process
PID 4496 wrote to memory of 2408	4496	rundll32.exe	rundll32.exe
PID 4496 wrote to memory of 2408	4496	rundll32.exe	rundll32.exe
PID 4496 wrote to memory of 2408	4496	rundll32.exe	rundll32.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\shell_downloader.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4496

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\shell_downloader.dll,#1
2⤵
PID:2408

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2408 -s 700
3⤵
- Program crash
PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2408 -ip 2408
1⤵
PID:3308

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=3232 --field-trial-handle=3408,i,16599691418790971742,134777455365707676,262144 --variations-seed-version /prefetch:8
1⤵
PID:4712

Network

MITRE ATT&CK Matrix

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