Analysis
- max time kernel
149s - max time network
151s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
18/04/2026, 22:45
Behavioral task
behavioral1
Sample
b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe
- Size 560KB
- Sample260418-2pr77ahs6r
- SHA256 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12
- MD5 cb8b67e503e8c46ed062bdd24d800694
- SHA1 56dce3d181b59ce3f6a68df26130e5437c8dacb8
- SHA512 ced60627174e9d3c31c7eaea80fc5e6d09a7bc8ede02122643a27bf88d77b7e867d2b34347b56d98663334372f3ee2a820c4ecf6c68952c6489bda04b23fcfd7
- SSDEEP 6144:L4ZaN1cb90oOTFmIFLq0cvnXhLCqj2EFNirGcEOkCybEaQRuy8K:LrNOb9+sIF+0cvnXhLCqEsOkxHy
- TLSH T1A0C48D29B6E0C076C4B79578C4A186B6FAB17832372459CFA394075A1F337E2BA3570D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3796 21d19520 - 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 1 114.114.114.114 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Destination IP 2 223.5.5.5 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Destination IP 12 114.114.114.114 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Destination IP 13 223.5.5.5 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe - Drops file in System32 directory 15 IoCs
description ioc Process File created C:\Windows\SysWOW64\21d19520 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 21d19520 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 21d19520 -
resource yara_rule behavioral2/memory/1472-0-0x0000000000880000-0x000000000090C000-memory.dmp upx behavioral2/files/0x001000000002ad90-2.dat upx behavioral2/memory/3796-4-0x00000000003C0000-0x000000000044C000-memory.dmp upx behavioral2/memory/1472-18-0x0000000000880000-0x000000000090C000-memory.dmp upx behavioral2/memory/3796-19-0x00000000003C0000-0x000000000044C000-memory.dmp upx behavioral2/memory/3796-26-0x00000000003C0000-0x000000000044C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\40fd28 21d19520 File opened for modification C:\Windows\193380 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.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 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 21d19520 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 21d19520 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 21d19520 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 21d19520 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 21d19520 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 21d19520 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 21d19520 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 21d19520 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 21d19520 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 21d19520 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3796 21d19520 3796 21d19520 3796 21d19520 3796 21d19520 3796 21d19520 3796 21d19520 3796 21d19520 3796 21d19520 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Token: SeTcbPrivilege 1472 b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe Token: SeDebugPrivilege 3796 21d19520 Token: SeTcbPrivilege 3796 21d19520
Processes
-
C:\Users\Admin\AppData\Local\Temp\b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.exe"C:\Users\Admin\AppData\Local\Temp\b441a77c94be8c0050f86215f35512ae0e0daa6b189b833e1eca3fd7c4969d12.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:1472
-
C:\Windows\Syswow64\21d19520C:\Windows\Syswow64\21d195201⤵
- 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:3796
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\21d19520
- Size 560KB
- SHA256 ea3d6fbabd1ef61a0dddba3497473a6bbf9cbe5b81a23e61815e116a47142566
- MD5 84ed568f7e12504c75ecce54fe83c152
- SHA1 7c40d7e04ffbe08dc396f0e98ee5e06b56d6ef49
- SHA512 e3d2c494e8b13716981e60cede9f6754323346c4be8e00d10917ad080452b3e12dcc60aae6b38fdcadd2d979fca0b75335f11020ef5cf42f3d978321f4dba95d
- SSDEEP 6144:U4ZaN1cb90oOTFmIFLq0cvnXhLCqj2EFNirGcEOkCybEaQRuy8K:UrNOb9+sIF+0cvnXhLCqEsOkxHy
- TLSH T118C48D29B6E0C076C4B79578C4A186B6FAB17832372459CFA394075A1F337E2BA3570D
- MD5 SHA1 SHA512 SSDEEP TLSH