Analysis
- max time kernel
149s - max time network
150s - 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, 10:31
Behavioral task
behavioral1
Sample
88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe
- Size 525KB
- Sample260528-mkp5psew3s
- SHA256 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e
- MD5 900be06c03bbcad4837a0aab5a502f35
- SHA1 b28d95366c73395af7bd3e3c2a749816a04f4325
- SHA512 ab717f499931e1253ecdc5d581637c23d3bef7778e01183dc656e69991966a52048c06b2a55ffe7259c791ecfb4b15d5ff1b4cc50dc3e6d1edb4860ffe09ad70
- SSDEEP 6144:3cTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K:3SvO2x9mONvKRwLSFtsOkx2LIa+y
- TLSH T144B47D2AB6A0D076C4779579C4A257BAFBB1742137204ACFA390475A1F237E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 3364 a6d7c93e - 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 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Destination IP 2 223.5.5.5 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Destination IP 11 114.114.114.114 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Destination IP 12 223.5.5.5 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.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 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a6d7c93e File created C:\Windows\SysWOW64\a6d7c93e 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData a6d7c93e File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 a6d7c93e -
resource yara_rule behavioral2/memory/4796-0-0x0000000000490000-0x000000000051C000-memory.dmp upx behavioral2/files/0x000600000002a956-2.dat upx behavioral2/memory/3364-4-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/memory/4796-12-0x0000000000490000-0x000000000051C000-memory.dmp upx behavioral2/memory/3364-13-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/memory/3364-25-0x0000000000500000-0x000000000058C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\3997c8 a6d7c93e File opened for modification C:\Windows\521bf8 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.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 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language a6d7c93e - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" a6d7c93e Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" a6d7c93e Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" a6d7c93e Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" a6d7c93e Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing a6d7c93e Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix a6d7c93e Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" a6d7c93e Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ a6d7c93e Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" a6d7c93e - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 3364 a6d7c93e 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Token: SeTcbPrivilege 4796 88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe Token: SeDebugPrivilege 3364 a6d7c93e Token: SeTcbPrivilege 3364 a6d7c93e
Processes
-
C:\Users\Admin\AppData\Local\Temp\88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.exe"C:\Users\Admin\AppData\Local\Temp\88bdfe882b312e91366b261d9561c9a30e36439a80ce83afa56790c50b9a692e.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:4796
-
C:\Windows\Syswow64\a6d7c93eC:\Windows\Syswow64\a6d7c93e1⤵
- 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:3364
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\a6d7c93e
- Size 525KB
- SHA256 fc93bd9a6b4cc500bda31eb245583fb58a32ccdf55d2328e28a56b4aaffe8653
- MD5 80a4554d115666caf437875a1c35c9a3
- SHA1 1b41066441adfee8cd92ff5491e214f02e108a31
- SHA512 17822e69dcfad35282d8912b28be85f8ddf40080d2058b96b4c26fb22ca85fdba0dd8bdc38e53b819bb400c39aeca7419d68459857401dccfb15557243917ae8
- SSDEEP 6144:BcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRXr9HNdvOa+y8K:BSvO2x9mONvKRwLSFtsOkx2LIa+y
- TLSH T195B47D2AB6A0D076C4779579C4A257BAFBB1742137204ACFA390475A1F237E2BE3530D
- MD5 SHA1 SHA512 SSDEEP TLSH