Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20250619-en - resource tags
arch:x64arch:x86image:win11-20250619-enlocale:en-usos:windows11-21h2-x64system - submitted
11/05/2026, 03:53
Behavioral task
behavioral1
Sample
f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
9 signatures
150 seconds
General
- Target f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe
- Size 761KB
- Sample260511-efv66aaz41
- SHA256 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455
- MD5 fd250fd82371363550cf83281d7e7593
- SHA1 a9292cbf64ce590428e6e03fe7646f97d453a397
- SHA512 84b4b2cd0a8c551d387958ef2d44802e9c6e97257ef547db715f37f0ad83175256d6112850d7d0db88d52137187eac675da9c5a2dcc8e27d9a83479b87c88cd5
- SSDEEP 12288:4SvO2x9mONvKRwLSFtsOkxHya5hYIW0p98B:TvO2xJKRw2kOkxSkW298B
- TLSH T1FAF49E35A2808036C0B34532C6F94AABF9797D35631565CBA3843B662F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2092 55525ed6 - 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 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Destination IP 2 223.5.5.5 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Destination IP 27 114.114.114.114 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Destination IP 28 223.5.5.5 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content 55525ed6 File created C:\Windows\SysWOW64\55525ed6 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 55525ed6 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 55525ed6 -
resource yara_rule behavioral2/memory/1424-0-0x0000000000260000-0x00000000002EC000-memory.dmp upx behavioral2/files/0x000f000000028f5c-2.dat upx behavioral2/memory/2092-3-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral2/memory/1424-18-0x0000000000260000-0x00000000002EC000-memory.dmp upx behavioral2/memory/2092-19-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx behavioral2/memory/2092-30-0x0000000000A20000-0x0000000000AAC000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\23d0d8 55525ed6 File opened for modification C:\Windows\186120 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.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 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 55525ed6 - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 55525ed6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 55525ed6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 55525ed6 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing 55525ed6 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 55525ed6 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 55525ed6 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 55525ed6 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 55525ed6 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 55525ed6 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2092 55525ed6 2092 55525ed6 2092 55525ed6 2092 55525ed6 2092 55525ed6 2092 55525ed6 2092 55525ed6 2092 55525ed6 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Token: SeTcbPrivilege 1424 f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe Token: SeDebugPrivilege 2092 55525ed6 Token: SeTcbPrivilege 2092 55525ed6
Processes
-
C:\Users\Admin\AppData\Local\Temp\f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.exe"C:\Users\Admin\AppData\Local\Temp\f671054156e3f63365ac68d67b93629c41b216604b98a5716fd05e51bed8c455.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:1424
-
C:\Windows\Syswow64\55525ed6C:\Windows\Syswow64\55525ed61⤵
- 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:2092
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\55525ed6
- Size 761KB
- SHA256 146e02279340388c4ba09e71e1921a1b3bf9ea2958055f3e7b9c77bc370f01b5
- MD5 7fe6fd2938b3b24e99b43fd204abc0b3
- SHA1 f9ba28db0ce88254527396472931abd8d411c4c7
- SHA512 3281e86e988e1c49afe2e90fafbd689695d1fc97cd8da466bb006eea71bcea424fce695f2c851df5edd0f595d7de4a9f5ed5de5cb8fbdc4a15b40537911c05db
- SSDEEP 12288:7SvO2x9mONvKRwLSFtsOkxHya5hYIW0p98B:OvO2xJKRw2kOkxSkW298B
- TLSH T1DCF49E35A2808036C0B34532C6F94AABF9797D35631565CBA3843B662F737D2BA3570E
- MD5 SHA1 SHA512 SSDEEP TLSH