Analysis
- max time kernel
149s - max time network
142s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
22/04/2026, 22:31
Behavioral task
behavioral1
Sample
4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe
Resource
win10v2004-20260130-en
9 signatures
150 seconds
General
- Target 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe
- Size 832KB
- Sample260422-2frkasds5x
- SHA256 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a
- MD5 56424e84cbdfc147ffd18272720a95a4
- SHA1 594df8dea1b2350ccaef4134d87cdb52af3d1986
- SHA512 5160678cc4ed8220681a63e9e8f0ce94c89f4b49858c9e2abc16bb86676ac44b0f44a03337b04395b6b702475aef53389b09be32919c2da4086483ffc30316c8
- SSDEEP 12288:9SvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Likr:cvO2xJKRw2kOkx2LFRvcUv
- TLSH T159055A31E6418036D1B34576C6FA0BBFE664BD25131155CBA3C4BA262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 2424 9a904615 - 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 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Destination IP 2 223.5.5.5 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Destination IP 5 114.114.114.114 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Destination IP 6 223.5.5.5 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe - Drops file in System32 directory 5 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 9a904615 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE 9a904615 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies 9a904615 File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 9a904615 File created C:\Windows\SysWOW64\9a904615 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe -
resource yara_rule behavioral2/memory/3116-0-0x0000000000BC0000-0x0000000000C4C000-memory.dmp upx behavioral2/files/0x0008000000000436-3.dat upx behavioral2/memory/2424-4-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/memory/3116-10-0x0000000000BC0000-0x0000000000C4C000-memory.dmp upx behavioral2/memory/2424-12-0x0000000000500000-0x000000000058C000-memory.dmp upx behavioral2/memory/2424-26-0x0000000000500000-0x000000000058C000-memory.dmp upx - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\297ff0 9a904615 File opened for modification C:\Windows\3558d8 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.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 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 9a904615 - Modifies data under HKEY_USERS 8 IoCs
description ioc Process Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix 9a904615 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" 9a904615 Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" 9a904615 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" 9a904615 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" 9a904615 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" 9a904615 Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ 9a904615 Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" 9a904615 - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 2424 9a904615 2424 9a904615 2424 9a904615 2424 9a904615 2424 9a904615 2424 9a904615 2424 9a904615 2424 9a904615 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Token: SeTcbPrivilege 3116 4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe Token: SeDebugPrivilege 2424 9a904615 Token: SeTcbPrivilege 2424 9a904615
Processes
-
C:\Users\Admin\AppData\Local\Temp\4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.exe"C:\Users\Admin\AppData\Local\Temp\4fa99f663a48554a81f9b051687f440668e520a740e1cef5c3cd02dd883bc16a.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:3116
-
C:\Windows\Syswow64\9a904615C:\Windows\Syswow64\9a9046151⤵
- 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:2424
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\9a904615
- Size 832KB
- SHA256 1d3d7c84c961bc93c4c8157e8e41475a9c553dd15bdc3e8aa7ef8b95bde0342d
- MD5 0a363654256733bc4ecc4643b136b55d
- SHA1 7f032982fd7c3dcba604ee53c25a3873668b46f4
- SHA512 0df26cee36146b656778d1fe39c9629fc83e091ddb74e6fd0ec9d8d488744b98358b28ffc269629a2d735f3faa51eb28e21367dc18ca97877f8c43fae24622a6
- SSDEEP 12288:3SvO2x9mONvKRwLSFtsOkx2LIa+ya5FAQjU/Likr:CvO2xJKRw2kOkx2LFRvcUv
- TLSH T1FA055A31E6418036D1B34576C6FA0BBFE664BD25131155CBA3C4BA262FB36D2BA3170E
- MD5 SHA1 SHA512 SSDEEP TLSH