Overview
overview
9Static
static
1SteamSetup.exe
windows11-21h2-x64
9$PLUGINSDI...ls.dll
windows11-21h2-x64
3$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
898s - max time network
406s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
02/08/2026, 16:43
Static task
static1
Behavioral task
behavioral1
Sample
SteamSetup.exe
Resource
win11-20260513-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win11-20260513-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win11-20260513-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/nsExec.dll
Resource
win11-20260513-en
Behavioral task
behavioral6
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win11-20260513-en
Behavioral task
behavioral7
Sample
Steam.exe
Resource
win11-20260513-en
Behavioral task
behavioral8
Sample
bin/SteamService.exe
Resource
win11-20260513-en
Behavioral task
behavioral9
Sample
uninstall.exe
Resource
win11-20260513-en
Behavioral task
behavioral10
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win11-20260513-en
Behavioral task
behavioral11
Sample
$PLUGINSDIR/ShellLink.dll
Resource
win11-20260513-en
Behavioral task
behavioral12
Sample
$PLUGINSDIR/nsExec.dll
Resource
win11-20260513-en
General
- Target uninstall.exe
- Size 155KB
- Sample260802-t8a41sxane
- SHA256 72ffe8859eaa63637f5a62b7c454241db35938f8326f6ccf20352e00f8df2fe5
- MD5 32109e2aac377fa07b849f4f4033edc5
- SHA1 a7b87a221744fb2e36327be0a34c17b7d734c47f
- SHA512 688d9b51060d84c4e2dd0ddbb20d43bbc8bf93a903f26e855f546335bd7a5c9ef5c6f888dff35d379cbb1d782c5e231b33831b7272cde2b40c2d7fc2b85ffc0d
- SSDEEP 3072:iIAe+3aJpgWXTBuq/JFONM2cZ6iKowuq12ApG3s/6:izB+pgURJFOS21iQ5i+6
- TLSH T1EEF36B0167E4D12EF9E34B70E8E286F65735BC55E5228E9F77847F1E3834200AE493A6
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 756 Un_A.exe - Loads dropped DLL 1 IoCs
pid Process 756 Un_A.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language uninstall.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Un_A.exe - Suspicious use of WriteProcessMemory 1 IoCs
description pid Process procid_target PID 3400 wrote to memory of 756 3400 uninstall.exe 80
Processes
-
C:\Users\Admin\AppData\Local\Temp\uninstall.exe"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400 -
C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe"C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe" _?=C:\Users\Admin\AppData\Local\Temp\2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:756
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsp29BD.tmp\LangDLL.dll
- Size 16KB
- SHA256 4fca692a36f0c99e26b5bc7ef9db5269d2c1e21288184953898130fea9b1c4fc
- MD5 46ba3881f8b27f54a8d92d600e61ee7b
- SHA1 15933b6ece85a6d45fd78ae499b445a3bc6d2d05
- SHA512 6f64d3cb4634ed51710f578667b92a429aa871a0a141092df3cf7e0134a0b145f802f91126f1ce43ddb4b9d6cc6fb875c9acec22eab0cec86a72dd916e1f9eb3
- SSDEEP 384:kTrZBV86AQINyQH38E9VF6IYinAM+oZtfpMVK:kXZL86A1MEpYinAMxZ5aK
- TLSH T12E725BB286805C15CE4B8D3274D5A537AA727B926BC0C1D7136AC1518B907C37FFC2EA
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exe
- Size 155KB
- SHA256 72ffe8859eaa63637f5a62b7c454241db35938f8326f6ccf20352e00f8df2fe5
- MD5 32109e2aac377fa07b849f4f4033edc5
- SHA1 a7b87a221744fb2e36327be0a34c17b7d734c47f
- SHA512 688d9b51060d84c4e2dd0ddbb20d43bbc8bf93a903f26e855f546335bd7a5c9ef5c6f888dff35d379cbb1d782c5e231b33831b7272cde2b40c2d7fc2b85ffc0d
- SSDEEP 3072:iIAe+3aJpgWXTBuq/JFONM2cZ6iKowuq12ApG3s/6:izB+pgURJFOS21iQ5i+6
- TLSH T1EEF36B0167E4D12EF9E34B70E8E286F65735BC55E5228E9F77847F1E3834200AE493A6
- MD5 SHA1 SHA512 SSDEEP TLSH