Analysis
- max time kernel
148s - max time network
149s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows - submitted
01/09/2026, 22:51
Behavioral task
behavioral1
Sample
43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe
- Size 2.6MB
- Sample260901-2sr2layekd
- SHA256 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90
- MD5 2c3e0d01cf585912e74617eb90e05f30
- SHA1 560e299c008be7e529e40534c6d15b70bcdecb8a
- SHA512 fc3ddb366c2212354c65a25d79fd25e17d6eeb84ae4893bb89aad6e61159a6abb25e08c0f92243fa16aa57a5455bed929d44eb9c0ad8e312bd1b80a59c7e8df0
- SSDEEP 49152:PTGkQy56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:PKkVkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T1B9C59F31B7818036D1B7427186FA47BBA5297C211715A5CF73C87A2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5116 89c5ecb8 - 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 4 114.114.114.114 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Destination IP 6 223.5.5.5 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Destination IP 17 114.114.114.114 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Destination IP 18 223.5.5.5 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe - Drops file in System32 directory 13 IoCs
description ioc Process File created C:\Windows\SysWOW64\89c5ecb8 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 89c5ecb8 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 89c5ecb8 -
resource yara_rule behavioral2/memory/4128-0-0x0000000000C90000-0x0000000000D19000-memory.dmp upx behavioral2/files/0x000a000000019cb8-2.dat upx behavioral2/memory/5116-3-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4128-13-0x0000000000C90000-0x0000000000D19000-memory.dmp upx behavioral2/memory/5116-15-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4128-38-0x0000000000C90000-0x0000000000D19000-memory.dmp upx behavioral2/memory/5116-39-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/5116-43-0x0000000000AB0000-0x0000000000B39000-memory.dmp upx behavioral2/memory/4128-46-0x0000000000C90000-0x0000000000D19000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\579678 89c5ecb8 File opened for modification C:\Windows\46ac40 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.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 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 89c5ecb8 - 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\Content\CachePrefix 89c5ecb8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 89c5ecb8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 89c5ecb8 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 89c5ecb8 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 89c5ecb8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 89c5ecb8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 89c5ecb8 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 89c5ecb8 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 89c5ecb8 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 5116 89c5ecb8 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Token: SeTcbPrivilege 4128 43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe Token: SeDebugPrivilege 5116 89c5ecb8 Token: SeTcbPrivilege 5116 89c5ecb8
Processes
-
C:\Users\Admin\AppData\Local\Temp\43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.exe"C:\Users\Admin\AppData\Local\Temp\43ef16c40c2081c66a733e13179bc7a0ff3fd7cb8154f89728ae435d039e0c90.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:4128
-
C:\Windows\Syswow64\89c5ecb8C:\Windows\Syswow64\89c5ecb81⤵
- 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:5116
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\89c5ecb8
- Size 2.6MB
- SHA256 85e1b280121e8233a55f4e7bbfe33c6ad983715358552da41514eed84c638d1d
- MD5 04de62f98a345d9c5845011b7047840c
- SHA1 b9503871963552b9737e120bf2f0b273d7d88853
- SHA512 defe81804b08ac0f12b1a5237007cec87bdca5a406491df9f9dce222cf9a9976bafd8c2403d7525a65d827d9c25e48177def99c0aada376b1d30298443c4fd70
- SSDEEP 49152:qTGkQy56/OJdJCXDrsOFZMjHfUTGkQy5QZuTtS0rQMYOF:qKkVkOhCXHHFZMjHfUKkVWsM0r1F
- TLSH T199C59F31B7818036D1B7427186FA47BBA5297C211715A5CF73C87A2A1FB36D2AE3170E
- MD5 SHA1 SHA512 SSDEEP TLSH