Analysis
- max time kernel
149s - max time network
153s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
27/04/2026, 00:18
Behavioral task
behavioral1
Sample
e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe
- Size 525KB
- Sample260427-althasc17j
- SHA256 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84
- MD5 71745d351bd697df53e52cf13d73df7c
- SHA1 2749e16b89145d237ba14ac425620e6dca4a03b3
- SHA512 2b0391d08b3b81cecbd7056a087db237162bb38d736d16616a04a7d5e6eae86b6484887c7205fefabb93f6bf0fe02df4786885a5585f949a0b60afdba0278ebe
- SSDEEP 6144:scTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K:sSvO2x9mONvKRwLSFtsOkx2LIa+y
- TLSH T1C7B47D2AB6A0D076C4779579C4A257BAFBB1742137204ACFA390475A1F237E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2440 ef4cd741 - 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 2 223.5.5.5 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Destination IP 12 114.114.114.114 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Destination IP 13 223.5.5.5 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Destination IP 1 114.114.114.114 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 ef4cd741 File created C:\Windows\SysWOW64\ef4cd741 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 ef4cd741 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 ef4cd741 -
resource yara_rule behavioral2/memory/616-0-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral2/files/0x000d00000002ad99-3.dat upx behavioral2/memory/2440-4-0x0000000000E90000-0x0000000000F1C000-memory.dmp upx behavioral2/memory/616-18-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral2/memory/2440-19-0x0000000000E90000-0x0000000000F1C000-memory.dmp upx behavioral2/memory/2440-32-0x0000000000E90000-0x0000000000F1C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\29c610 ef4cd741 File opened for modification C:\Windows\a8bd0 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.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 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ef4cd741 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ ef4cd741 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" ef4cd741 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" ef4cd741 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" ef4cd741 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" ef4cd741 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" ef4cd741 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" ef4cd741 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing ef4cd741 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix ef4cd741 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 2440 ef4cd741 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Token: SeTcbPrivilege 616 e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe Token: SeDebugPrivilege 2440 ef4cd741 Token: SeTcbPrivilege 2440 ef4cd741
Processes
-
C:\Users\Admin\AppData\Local\Temp\e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.exe"C:\Users\Admin\AppData\Local\Temp\e281d0403781fdaf7496fbbbe1f0d3c377f291faafbbd1bab7c437e63a771f84.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:616
-
C:\Windows\Syswow64\ef4cd741C:\Windows\Syswow64\ef4cd7411⤵
- 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:2440
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\ef4cd741
- Size 525KB
- SHA256 80977f619d9518a8fca7453fe96c5e441dd4b71942c0e8b140ac5ce7134dd34d
- MD5 a7708f226676c4c2555e1fa9dbbf412a
- SHA1 f5b98b6adbb02ffa89ffae7590349a0c36b46c2d
- SHA512 3dd4390f248419158947fa2f3d66faee12db7b4edf46b5283ad1fa239094614d03fa438118bf00ce2ec317fd0d262997ee9d07ed72967ff6db9a8604f7fa53d1
- SSDEEP 6144:6cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K:6SvO2x9mONvKRwLSFtsOkx2LIa+y
- TLSH T11FB47D2AB6A0D076C4779579C4A257BAFBB1742137204ACFA390475A1F237E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH