Analysis
- max time kernel
150s - max time network
151s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
05/08/2026, 03:28
Behavioral task
behavioral1
Sample
b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe
- Size 640KB
- Sample260805-d1l9bavvbz
- SHA256 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada
- MD5 2a1062b6abc5969e3a49b89936905632
- SHA1 d09836db31aa9e01ea647b411ab3b1d1a711c41c
- SHA512 425c3132fcb9e2e1fdf90e70fa6523bc3f597e21b454fbbac2e45e6124f51b65eb565a1a61f212cf09d61174d19591149eefcbf53827c9c566e376852201694f
- SSDEEP 6144:xcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:xSvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T1BED45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5616 c2611800 - 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 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Destination IP 2 223.5.5.5 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Destination IP 13 114.114.114.114 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Destination IP 16 223.5.5.5 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 c2611800 File created C:\Windows\SysWOW64\c2611800 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content c2611800 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 c2611800 -
resource yara_rule behavioral2/memory/4136-0-0x00000000005B0000-0x000000000063C000-memory.dmp upx behavioral2/files/0x00070000000187d5-2.dat upx behavioral2/memory/5616-3-0x00000000004A0000-0x000000000052C000-memory.dmp upx behavioral2/memory/4136-12-0x00000000005B0000-0x000000000063C000-memory.dmp upx behavioral2/memory/5616-13-0x00000000004A0000-0x000000000052C000-memory.dmp upx behavioral2/memory/5616-37-0x00000000004A0000-0x000000000052C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\6025e0 c2611800 File opened for modification C:\Windows\46cf50 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.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 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language c2611800 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" c2611800 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix c2611800 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" c2611800 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" c2611800 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" c2611800 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" c2611800 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" c2611800 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing c2611800 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ c2611800 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5616 c2611800 5616 c2611800 5616 c2611800 5616 c2611800 5616 c2611800 5616 c2611800 5616 c2611800 5616 c2611800 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Token: SeTcbPrivilege 4136 b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe Token: SeDebugPrivilege 5616 c2611800 Token: SeTcbPrivilege 5616 c2611800
Processes
-
C:\Users\Admin\AppData\Local\Temp\b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.exe"C:\Users\Admin\AppData\Local\Temp\b4b1ded0ec412828c19e969eab3771ed8cae5671b0b3e0307a2ac0891eb35ada.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:4136
-
C:\Windows\Syswow64\c2611800C:\Windows\Syswow64\c26118001⤵
- 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:5616
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Windows\SysWOW64\c2611800
- Size 640KB
- SHA256 2747821d402ac72354d0bbd31a84e9ade35707baa8fba1d3b7e3d261e3737625
- MD5 ed2c203ca26000e1e4bae7153fd2e4f0
- SHA1 e3ba5aff20e2fe69ba4cbfec86c6f7b260c36580
- SHA512 ab1282d49338f43409f92e9a76851bfca2a45bfa508b7f4f141c32cc4afe5de09250f44511cc28afcc73aec164d34dba25c57c532696dec05e1843eed5a57231
- SSDEEP 6144:mcTgav1cdCTuoPbgwmOLJvKRwLSFXdFwirGcEOkCybEaQRuy8KU5Rc:mSvO2x9mONvKRwLSFtsOkxHya5+
- TLSH T143D45B35A6808036C0B74631C6F64BAAF9B5BC25631195CFA384376A1F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH