Overview
overview
6Static
static
1SteamSetup.exe
windows10-2004-x64
6$PLUGINSDI...ls.dll
windows10-2004-x64
3$PLUGINSDI...em.dll
windows10-2004-x64
3$PLUGINSDI...gs.dll
windows10-2004-x64
3$PLUGINSDI...ec.dll
windows10-2004-x64
3$PLUGINSDI...ss.dll
windows10-2004-x64
3Steam.exe
windows10-2004-x64
5bin/SteamService.exe
windows10-2004-x64
1uninstall.exe
windows10-2004-x64
4$PLUGINSDI...LL.dll
windows10-2004-x64
3$PLUGINSDI...nk.dll
windows10-2004-x64
3$PLUGINSDI...ec.dll
windows10-2004-x64
3Analysis
-
max time kernel
1384s -
max time network
1164s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-de -
resource tags
arch:x64arch:x86image:win10v2004-20240419-delocale:de-deos:windows10-2004-x64systemwindows -
submitted
03-05-2024 16:22
Static task
static1
Behavioral task
behavioral1
Sample
SteamSetup.exe
Resource
win10v2004-20240419-de
Behavioral task
behavioral2
Sample
$PLUGINSDIR/StdUtils.dll
Resource
win10v2004-20240419-de
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20240426-de
Behavioral task
behavioral4
Sample
$PLUGINSDIR/nsDialogs.dll
Resource
win10v2004-20240419-de
Behavioral task
behavioral5
Sample
$PLUGINSDIR/nsExec.dll
Resource
win10v2004-20240226-de
Behavioral task
behavioral6
Sample
$PLUGINSDIR/nsProcess.dll
Resource
win10v2004-20240426-de
Behavioral task
behavioral7
Sample
Steam.exe
Resource
win10v2004-20240419-de
Behavioral task
behavioral8
Sample
bin/SteamService.exe
Resource
win10v2004-20240419-de
Behavioral task
behavioral9
Sample
uninstall.exe
Resource
win10v2004-20240419-de
Behavioral task
behavioral10
Sample
$PLUGINSDIR/LangDLL.dll
Resource
win10v2004-20240426-de
Behavioral task
behavioral11
Sample
$PLUGINSDIR/ShellLink.dll
Resource
win10v2004-20240426-de
Behavioral task
behavioral12
Sample
$PLUGINSDIR/nsExec.dll
Resource
win10v2004-20240426-de
General
-
Target
uninstall.exe
-
Size
153KB
-
MD5
2465c84f5fb9e6ce8ffe81c60bd13130
-
SHA1
b8aac13eadba39dbe637a6f1f91c65bc7b9a7ed1
-
SHA256
7993f70d54d955e522e5ddbdf30a7d07404f14f7bd6ee45ecdaf5ad16807a695
-
SHA512
f9ab90acd67be2256b26b70430bb2532c12a3f0a68754ee3c6606258646611fb0b789b55de0c18a32281bde9a50bae3fc226f01b561646801e4f5f00f17b17a0
-
SSDEEP
3072:WAe+3aJpgWXTBuO/JFONMOTc0DCY91AaC/I2U:9B+pgUJJFOSOTc0DC+1JY8
Malware Config
Signatures
-
Executes dropped EXE 1 IoCs
Processes:
Un_A.exepid process 384 Un_A.exe -
Loads dropped DLL 1 IoCs
Processes:
Un_A.exepid process 384 Un_A.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
uninstall.exedescription pid process target process PID 220 wrote to memory of 384 220 uninstall.exe Un_A.exe PID 220 wrote to memory of 384 220 uninstall.exe Un_A.exe PID 220 wrote to memory of 384 220 uninstall.exe Un_A.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\uninstall.exe"C:\Users\Admin\AppData\Local\Temp\uninstall.exe"1⤵
- Suspicious use of WriteProcessMemory
-
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
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
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Downloads
-
C:\Users\Admin\AppData\Local\Temp\nse4548.tmp\LangDLL.dllFilesize
16KB
MD546ba3881f8b27f54a8d92d600e61ee7b
SHA115933b6ece85a6d45fd78ae499b445a3bc6d2d05
SHA2564fca692a36f0c99e26b5bc7ef9db5269d2c1e21288184953898130fea9b1c4fc
SHA5126f64d3cb4634ed51710f578667b92a429aa871a0a141092df3cf7e0134a0b145f802f91126f1ce43ddb4b9d6cc6fb875c9acec22eab0cec86a72dd916e1f9eb3
-
C:\Users\Admin\AppData\Local\Temp\~nsuA.tmp\Un_A.exeFilesize
153KB
MD52465c84f5fb9e6ce8ffe81c60bd13130
SHA1b8aac13eadba39dbe637a6f1f91c65bc7b9a7ed1
SHA2567993f70d54d955e522e5ddbdf30a7d07404f14f7bd6ee45ecdaf5ad16807a695
SHA512f9ab90acd67be2256b26b70430bb2532c12a3f0a68754ee3c6606258646611fb0b789b55de0c18a32281bde9a50bae3fc226f01b561646801e4f5f00f17b17a0