Analysis
- max time kernel
149s - max time network
158s - platform
windows11-21h2_x64 - resource
win11-20260513-en - resource tags
arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
28/05/2026, 14:12
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
Resource
win10v2004-20260513-en
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
Resource
win11-20260513-en
8 signatures
150 seconds
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
3 signatures
150 seconds
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win11-20260513-en
3 signatures
150 seconds
General
- Target 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe
- Size 660KB
- Sample260528-rhvdvsav5k
- SHA256 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89
- MD5 b2b62bf79ec600a0860c1944dd3b78cc
- SHA1 8043cbac17cb006b90a689a0599be5895b5e9ead
- SHA512 6debf6d1b0e6f1035ccfd1a1a545e23b3a4e1cdcca751d8970a58bc37310fb2f14bd5405ee818e2a7901fdbaf6c909a3fb3b64ccece141d3f149124461af39fb
- SSDEEP 12288:NIid8Pf+mSsevFvQPR4Utm2k8DpQp/9AN0S++6lhAJywF/:NIY8PmmSfuGUZVO/S0/B3Ad
- TLSH T1B3E401052370C54BC227123B98A563A073259FC92A51C70F67B0AE9F3DB769F9E903D9
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
Malware Config
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 1 IoCs
pid Process 5940 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe - Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 5940 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe 2640 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe - Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\resources\rivalises\homothermal.Krn 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.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 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 5940 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 5940 wrote to memory of 2640 5940 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe 82 PID 5940 wrote to memory of 2640 5940 046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe 82
Processes
-
C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:5940 -
C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"C:\Users\Admin\AppData\Local\Temp\046d5399a172a607cffec777b5361332f98c7009230b9b80be26ca01e8731d89.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
PID:2640
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsn23AC.tmp\System.dll
- Size 11KB
- SHA256 a632d74332b3f08f834c732a103dafeb09a540823a2217ca7f49159755e8f1d7
- MD5 75ed96254fbf894e42058062b4b4f0d1
- SHA1 996503f1383b49021eb3427bc28d13b5bbd11977
- SHA512 58174896db81d481947b8745dafe3a02c150f3938bb4543256e8cce1145154e016d481df9fe68dac6d48407c62cbe20753320ebd5fe5e84806d07ce78e0eb0c4
- SSDEEP 192:X24sihno0bW+l97H4GB7QDs91kMtwtobTr4u+QHbazMNHT7dmNIEr:m8vJl97JeoxtN/r3z7YV
- TLSH T1E0327D1293E044F2F191853C086B3B5AAB7A65099BE24EA79FE381817D15AD6BD3D303
- MD5 SHA1 SHA512 SSDEEP TLSH