Analysis
- max time kernel
149s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20260513-en - resource tags
arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows - submitted
01/08/2026, 10:44
Static task
static1
Behavioral task
behavioral1
Sample
6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe
Resource
win10v2004-20260513-en
Behavioral task
behavioral2
Sample
6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe
Resource
win11ltsc2024-20260709-en
Behavioral task
behavioral3
Sample
$PLUGINSDIR/System.dll
Resource
win10v2004-20260513-en
Behavioral task
behavioral4
Sample
$PLUGINSDIR/System.dll
Resource
win11ltsc2024-20260710-en
General
- Target 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe
- Size 669KB
- Sample260801-ms248she29
- SHA256 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1
- MD5 d8e62254f40965d5b3098a09670bd335
- SHA1 9b051c51c63b2d2bc1b5d41940cd8ed9b2a8e468
- SHA512 7c7d02aaf03825b11b0ede959c5c20ab139c65de9a2433ae10af2ebbf43413c54cf1fccba90679225c3ecf1617ad25513a5fc6ba011db669aefbb7cee7f34c80
- SSDEEP 12288:Xa/AcZ6qJ2s1+pBOiV0e/YoPLdDbst0WhcHCE34N2XdgjPEmADNA0EpphZNG2O:X4Z6SQB5VrwodDb/WhcHCtvjsmY0O
- TLSH T1BAE423A5F298C1B7E4668BF5D535C7F489BC9E60EA28C3031745BEAC3C761448E0A3D6
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Family: Guloader,Cloudeye
A shellcode based downloader first seen in 2020.
- Loads dropped DLL 2 IoCs
pid Process 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe - Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
flow ioc 35 drive.google.com 36 drive.google.com - Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
pid Process 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe 3816 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.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 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe - Suspicious use of WriteProcessMemory 2 IoCs
description pid Process procid_target PID 2172 wrote to memory of 3816 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe 98 PID 2172 wrote to memory of 3816 2172 6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe 98
Processes
-
C:\Users\Admin\AppData\Local\Temp\6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe"C:\Users\Admin\AppData\Local\Temp\6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe"1⤵
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2172 -
C:\Users\Admin\AppData\Local\Temp\6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe"C:\Users\Admin\AppData\Local\Temp\6721d6b0ed68abe2669a5e8cb5b5c2c56e6388db7c643619c14bd8436aa255e1.exe"2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- System Location Discovery: System Language Discovery
PID:3816
-
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\nsm4A05.tmp\System.dll
- Size 12KB
- SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
- MD5 0d7ad4f45dc6f5aa87f606d0331c6901
- SHA1 48df0911f0484cbe2a8cdd5362140b63c41ee457
- SHA512 c07de7308cb54205e8bd703001a7fe4fd7796c9ac1b4bb330c77c872bf712b093645f40b80ce7127531fe6746a5b66e18ea073ab6a644934abed9bb64126fea9
- SSDEEP 192:1enY0LWelt70elWjvfstJcVtwtYbjnIOg5AaDnbC7ypXhtIj:18PJlt70esj0Mt9vn6ay6
- TLSH T1BA428E12977049F2F1A0183C10A67F265FBEAE5C1BE445A39FE380867D652DF9436343
- MD5 SHA1 SHA512 SSDEEP TLSH
- Path C:\Users\Admin\Music\timelanges.lnk
- Size 826B
- SHA256 32b1462001ab346dafeca63c22a1e4f3b57a1c9860a689ba253f4191c40f427e
- MD5 50e987d2378899ee95210fef2e11ad25
- SHA1 0ae7bceccf9f3607837838e6a3f79ca23e88ff1e
- SHA512 a46b7c222b2defeb532736907408212fa5d036e2576c24ccbf1738179c19549e97c3eb832a264c6e315b3b38f44854147729f388971904e671d719dc5164f628
- TLSH T117014C040AE95234F2F7DE7165F54611A436F882FEA50F08428642C528F1520E5B9F6B
- MD5 SHA1 SHA512 TLSH