Analysis
- max time kernel
149s - max time network
154s - 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, 17:20
Behavioral task
behavioral1
Sample
c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
10 signatures
150 seconds
General
- Target c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe
- Size 873KB
- Sample260801-vwvtbstyft
- SHA256 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594
- MD5 46a7e6eb875a4796ff9445daf20f8ada
- SHA1 d457272437717a85f9b262afa8438cfc90a1445b
- SHA512 21fb662eb7dc9e25a4f64f99baf0be17da277ecd687701fffa3c05e731f337b647ab9cf60bae71137fcfff21839abe63b39b9da597ed96ef2243f930fbba5090
- SSDEEP 12288:TSvO2x9mONvKRhLSFtsOkx2LIaeyk5FAQjU/Lik8CQ3uEW:mvO2xJKRh2kOkx2LFxNcUQPxW
- TLSH T1DE156B31E641C036D0A34576C6FA4BBFE964BD25531165CBA3D43A262FB32D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 4552 8f98058a - Unexpected DNS network traffic destination 4 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description flow ioc pid Process Destination IP 28 223.5.5.5 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Destination IP 3 114.114.114.114 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Destination IP 6 223.5.5.5 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Destination IP 27 114.114.114.114 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 8f98058a File created C:\Windows\SysWOW64\8f98058a c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 8f98058a File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 8f98058a -
resource yara_rule behavioral1/memory/1812-0-0x0000000000A60000-0x0000000000AEC000-memory.dmp upx behavioral1/files/0x000c00000002432e-2.dat upx behavioral1/memory/4552-3-0x00000000002E0000-0x000000000036C000-memory.dmp upx behavioral1/memory/1812-12-0x0000000000A60000-0x0000000000AEC000-memory.dmp upx behavioral1/memory/4552-13-0x00000000002E0000-0x000000000036C000-memory.dmp upx behavioral1/memory/4552-30-0x00000000002E0000-0x000000000036C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\4dee90 8f98058a File opened for modification C:\Windows\1f05a8 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe - 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 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8f98058a - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 8f98058a Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 8f98058a Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 8f98058a Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 8f98058a Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 8f98058a Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 8f98058a Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 8f98058a Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 8f98058a Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 8f98058a - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 4552 8f98058a 4552 8f98058a 4552 8f98058a 4552 8f98058a 4552 8f98058a 4552 8f98058a 4552 8f98058a 4552 8f98058a 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Token: SeTcbPrivilege 1812 c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe Token: SeDebugPrivilege 4552 8f98058a Token: SeTcbPrivilege 4552 8f98058a
Processes
-
C:\Users\Admin\AppData\Local\Temp\c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe"C:\Users\Admin\AppData\Local\Temp\c761bfd295c09d3644fab2368f2a6d734fbb73dabd4e24a4187ec30a6fd02594.exe"1⤵
- Unexpected DNS network traffic destination
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1812
-
C:\Windows\Syswow64\8f98058aC:\Windows\Syswow64\8f98058a1⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4552
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\8f98058a
- Size 873KB
- SHA256 9b4b6fc790bb1b9aba69a71df988c98e3be0e62dbb2d9f2c96154aa76bed3baf
- MD5 c4505ec71ea2bf389b5ee04ba1988c92
- SHA1 79eda882e56eed65bb96943a4804dcd470cf8609
- SHA512 035f87f42787a55f5900c6faa7b7ae28831bb65d3f9733d96a80ef116c310f0b7ca7a1e87fe05330329694cd5732eefe624dc9054382f6b80a538166fa3f7db5
- SSDEEP 12288:lSvO2x9mONvKRhLSFtsOkx2LIaeyk5FAQjU/Lik8CQ3uEW:EvO2xJKRh2kOkx2LFxNcUQPxW
- TLSH T184156B31E641C036D0A34576C6FA4BBFE964BD25531165CBA3D43A262FB32D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH