Overview
overview
4Static
static
1SteamSetup.exe
windows11-21h2-x64
4$PLUGINSDI...ls.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3$PLUGINSDI...gs.dll
windows11-21h2-x64
3$PLUGINSDI...ec.dll
windows11-21h2-x64
3$PLUGINSDI...ss.dll
windows11-21h2-x64
3Steam.exe
windows11-21h2-x64
4bin/SteamService.exe
windows11-21h2-x64
1uninstall.exe
windows11-21h2-x64
4$PLUGINSDI...LL.dll
windows11-21h2-x64
3$PLUGINSDI...nk.dll
windows11-21h2-x64
3$PLUGINSDI...ec.dll
windows11-21h2-x64
3Analysis
- max time kernel
425s - max time network
1155s - platform
windows11-21h2_x64 - resource
win11-20240221-en - resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system - submitted
06/04/2024, 12:44
Static task
static1
Behavioral task
behavioral1
Sample
SteamSetup.exe
Resource
win11-20240221-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win11-20240221-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20240221-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win11-20240221-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/nsExec.dll
Resource
win11-20240221-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win11-20240221-en
Behavioral task
behavioral7
Sample
Steam.exe
Resource
win11-20240221-en
Behavioral task
behavioral8
Sample
bin/SteamService.exe
Resource
win11-20240221-en
Behavioral task
behavioral9
Sample
uninstall.exe
Resource
win11-20240221-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win11-20240221-en
Behavioral task
behavioral11
Sample
$PLUGINSDIR/ShellLink.dll
Resource
win11-20240221-en
Behavioral task
behavioral12
Sample
$PLUGINSDIR/nsExec.dll
Resource
win11-20240221-en
General
- Target $PLUGINSDIR/nsDialogs.dll
- Size 20KB
- Sample240406-pyj7qaae6y
- SHA256 91a484dc79be64dd11bf5acb62c893e57505fcd8809483aa92b04f10d81f9de0
- MD5 4e5bc4458afa770636f2806ee0a1e999
- SHA1 76dcc64af867526f776ab9225e7f4fe076487765
- SHA512 b6f529073a943bddbcb30a57d62216c78fcc9a09424b51ac0824ebfb9cac6cae4211bda26522d6923bd228f244ed8c41656c38284c71867f65d425727dd70162
- SSDEEP 384:ABSzm+t18pZ0WAg0RhIFgnGNyQH38E9VF6IYinAM+oZfNRoZk:NupZ/Ag0/T8MEpYinAMxZ7oW
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Program crash 1 IoCs
pid pid_target Process procid_target 4420 2220 WerFault.exe 80 - Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 648 wrote to memory of 2220 648 rundll32.exe 80 PID 648 wrote to memory of 2220 648 rundll32.exe 80 PID 648 wrote to memory of 2220 648 rundll32.exe 80
Processes
-
C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:648 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\nsDialogs.dll,#12⤵PID:2220
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2220 -s 5523⤵
- Program crash
PID:4420
-
-
-
C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2220 -ip 22201⤵PID:1028