Overview
overview
9Static
static
3windirstat...up.exe
windows11-21h2-x64
9$PLUGINSDI...ns.dll
windows11-21h2-x64
3$PLUGINSDI...em.dll
windows11-21h2-x64
3$PLUGINSDI...al.ini
windows11-21h2-x64
3$PLUGINSDI...rd.bmp
windows11-21h2-x64
3$_5_.exe
windows11-21h2-x64
9Uninstall.exe
windows11-21h2-x64
7$PLUGINSDI...em.dll
windows11-21h2-x64
3shfolder.dll
windows11-21h2-x64
3wdsh0407.chm
windows11-21h2-x64
1wdsh040e.chm
windows11-21h2-x64
1wdsh0415.chm
windows11-21h2-x64
1wdsr0405.dll
windows11-21h2-x64
1wdsr0407.dll
windows11-21h2-x64
1wdsr040a.dll
windows11-21h2-x64
1wdsr040b.dll
windows11-21h2-x64
1wdsr040c.dll
windows11-21h2-x64
1wdsr040e.dll
windows11-21h2-x64
1wdsr0410.dll
windows11-21h2-x64
1wdsr0413.dll
windows11-21h2-x64
1wdsr0415.dll
windows11-21h2-x64
1wdsr0419.dll
windows11-21h2-x64
1wdsr0425.dll
windows11-21h2-x64
1windirstat.chm
windows11-21h2-x64
1windirstat.exe
windows11-21h2-x64
9Analysis
-
max time kernel
149s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
06-08-2024 19:31
Static task
static1
Behavioral task
behavioral1
Sample
windirstat1_1_2_setup.exe
Resource
win11-20240802-en
Behavioral task
behavioral2
Sample
$PLUGINSDIR/InstallOptions.dll
Resource
win11-20240802-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win11-20240802-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/ioSpecial.ini
Resource
win11-20240802-en
Behavioral task
behavioral5
Sample
$PLUGINSDIR/modern-wizard.bmp
Resource
win11-20240802-en
Behavioral task
behavioral6
Sample
$_5_.exe
Resource
win11-20240802-en
Behavioral task
behavioral7
Sample
Uninstall.exe
Resource
win11-20240802-en
Behavioral task
behavioral8
Sample
$PLUGINSDIR/System.dll
Resource
win11-20240802-en
Behavioral task
behavioral9
Sample
shfolder.dll
Resource
win11-20240802-en
Behavioral task
behavioral10
Sample
wdsh0407.chm
Resource
win11-20240802-en
Behavioral task
behavioral11
Sample
wdsh040e.chm
Resource
win11-20240802-en
Behavioral task
behavioral12
Sample
wdsh0415.chm
Resource
win11-20240802-en
Behavioral task
behavioral13
Sample
wdsr0405.dll
Resource
win11-20240802-en
Behavioral task
behavioral14
Sample
wdsr0407.dll
Resource
win11-20240802-en
Behavioral task
behavioral15
Sample
wdsr040a.dll
Resource
win11-20240802-en
Behavioral task
behavioral16
Sample
wdsr040b.dll
Resource
win11-20240802-en
Behavioral task
behavioral17
Sample
wdsr040c.dll
Resource
win11-20240802-en
Behavioral task
behavioral18
Sample
wdsr040e.dll
Resource
win11-20240802-en
Behavioral task
behavioral19
Sample
wdsr0410.dll
Resource
win11-20240802-en
Behavioral task
behavioral20
Sample
wdsr0413.dll
Resource
win11-20240802-en
Behavioral task
behavioral21
Sample
wdsr0415.dll
Resource
win11-20240802-en
Behavioral task
behavioral22
Sample
wdsr0419.dll
Resource
win11-20240802-en
Behavioral task
behavioral23
Sample
wdsr0425.dll
Resource
win11-20240802-en
Behavioral task
behavioral24
Sample
windirstat.chm
Resource
win11-20240802-en
Behavioral task
behavioral25
Sample
windirstat.exe
Resource
win11-20240802-en
General
-
Target
Uninstall.exe
-
Size
46KB
-
MD5
a127e6118b9dd2f9d5a7cc4d697a0105
-
SHA1
9ac17d4dcf0884ceafacf10c42209c0942dfe7a8
-
SHA256
afc864cfce79b2a6add491a27ea672d958233ed7a97a2cbbce60100d2fa1e670
-
SHA512
0e57d2856c02c55d477d9b3cc1d4bf5ffa3650d4b20be18b0a9e614d19143aee325c4cd92ff31bbddf6e93cd3ebeb47d8727de6e25faa366341cc71117122065
-
SSDEEP
768:tnCHBjSfD0RDSjiN+WWrHcRtf55M4z54q+F5871mJMOUlNu0ZBA9U:MHFSfARDSW0HefHbmJZUlNu0bP
Malware Config
Signatures
-
Executes dropped EXE 1 IoCs
Processes:
Au_.exepid process 3144 Au_.exe -
Loads dropped DLL 1 IoCs
Processes:
Au_.exepid process 3144 Au_.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.
Processes:
Uninstall.exeAu_.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Uninstall.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Au_.exe -
NSIS installer 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe nsis_installer_1 -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
Uninstall.exedescription pid process target process PID 5672 wrote to memory of 3144 5672 Uninstall.exe Au_.exe PID 5672 wrote to memory of 3144 5672 Uninstall.exe Au_.exe PID 5672 wrote to memory of 3144 5672 Uninstall.exe Au_.exe
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:5672 -
C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe"C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exe" _?=C:\Users\Admin\AppData\Local\Temp\2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
PID:3144
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
-
C:\Users\Admin\AppData\Local\Temp\nswB018.tmp\System.dllFilesize
10KB
MD54125926391466fdbe8a4730f2374b033
SHA1fdd23034ada72d2537939ac6755d7f7c0e9b3f0e
SHA2566692bd93bcd04146831652780c1170da79aa3784c3c070d95fb1580e339de6c5
SHA51232a1cf96842454b3c3641316ee39051ae024bdce9e88ac236eadad531f2c0a08d46b77d525f7d994c9a5af4cc9a391d30ee92b9ec782b7fb9a42c76f0f52a008
-
C:\Users\Admin\AppData\Local\Temp\~nsu.tmp\Au_.exeFilesize
46KB
MD5a127e6118b9dd2f9d5a7cc4d697a0105
SHA19ac17d4dcf0884ceafacf10c42209c0942dfe7a8
SHA256afc864cfce79b2a6add491a27ea672d958233ed7a97a2cbbce60100d2fa1e670
SHA5120e57d2856c02c55d477d9b3cc1d4bf5ffa3650d4b20be18b0a9e614d19143aee325c4cd92ff31bbddf6e93cd3ebeb47d8727de6e25faa366341cc71117122065