Analysis
- max time kernel
148s - 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
04/08/2026, 00:54
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe
Resource
win10v2004-20260513-en
windows10-2004-x64
9 signatures
150 seconds
Behavioral task
behavioral2
Sample
efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe
Resource
win11ltsc2024-20260709-en
windows11-ltsc_2024-x64
9 signatures
150 seconds
General
- Target efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe
- Size 374KB
- Sample260804-a89ssss1ev
- SHA256 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db
- MD5 7013c8ac33efbe3a91b7710aec7b0ac6
- SHA1 5eecf0d6fb4dacb72ff8952cf15718fa3c742402
- SHA512 59bdee653693578b7271af92ed5ef0b145b715f9321bb1851740c0b867fba6f183d5059f0b6529396b12d24ffb6536139ce7b43a99ba6d75f67e3c0e11980711
- SSDEEP 6144:ScTgav1cdCTuoPbgwmOLJvKRILSFvdFDcEOkCybEaQRXr9HNdvOa:SSvO2x9mONvKRILSFnOkx2LIa
- TLSH T14B846D2AF6A0D076C4779579C4A247AAFBB1742137208ACFA390475A1F637E2BD3530D
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5616 f4538176 - 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 2 223.5.5.5 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Destination IP 13 114.114.114.114 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Destination IP 14 223.5.5.5 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Destination IP 1 114.114.114.114 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe - Drops file in System32 directory 17 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f4538176 File created C:\Windows\SysWOW64\f4538176 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\AAD646CB44373074ADE741C38400E7E1 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AAD646CB44373074ADE741C38400E7E1 f4538176 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f4538176 - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\6025e0 f4538176 File opened for modification C:\Windows\f8b98 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.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 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language f4538176 - 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:" f4538176 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f4538176 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f4538176 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f4538176 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f4538176 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix f4538176 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" f4538176 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f4538176 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f4538176 - Modifies system certificate store 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA f4538176 Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\1F24C630CDA418EF2069FFAD4FDD5F463A1B69AA\Blob = 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 f4538176 - Suspicious behavior: EnumeratesProcesses 22 IoCs
pid Process 5616 f4538176 5616 f4538176 5616 f4538176 5616 f4538176 5616 f4538176 5616 f4538176 5616 f4538176 5616 f4538176 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Token: SeTcbPrivilege 908 efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe Token: SeDebugPrivilege 5616 f4538176 Token: SeTcbPrivilege 5616 f4538176
Processes
-
C:\Users\Admin\AppData\Local\Temp\efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.exe"C:\Users\Admin\AppData\Local\Temp\efa40b55bdfcd2b7297593c5b8a0036e90ecf5411ca82dee3b9ff6d1e5ff87db.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:908
-
C:\Windows\Syswow64\f4538176C:\Windows\Syswow64\f45381761⤵
- Executes dropped EXE
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5616
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f4538176
- Size 374KB
- SHA256 806f8fca457d431a702653b2b39c5e710d797f7f64c8cb2ab73551c793ac5913
- MD5 1c538d9b98c950ccb365d4e1e38d5a1e
- SHA1 bf0bb77ceb611d135e07228bdfc2099f7d497283
- SHA512 eef6ec38ca0aca54f7c578967390257301723c2151c38a5f295d22b4c933609e170866e1c1c1bb703a6a4ec3c7188b4ea07dd892e4308e63701afc1932079bb4
- SSDEEP 6144:KcTgav1cdCTuoPbgwmOLJvKRILSFvdFDcEOkCybEaQRXr9HNdvOa:KSvO2x9mONvKRILSFnOkx2LIa
- TLSH T179846D2AF6A0D076C4779579C4A247AAFBB1742137208ACFA390475A1F637E2BD3530D
- MD5 SHA1 SHA512 SSDEEP TLSH