Analysis
- max time kernel
149s - max time network
150s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows - submitted
11/05/2026, 20:03
Static task
static1
1 signatures
Behavioral task
behavioral1
Sample
6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe
Resource
win10v2004-20260130-en
windows10-2004-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe
Resource
win11-20260130-en
windows11-21h2-x64
8 signatures
150 seconds
General
- Target 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe
- Size 896KB
- Sample260511-ysyycsds3r
- SHA256 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd
- MD5 56e0ad61d553536925b2037e1f0fb744
- SHA1 e7c23ec0eb1bd8efd642ffdd33014abd829d53aa
- SHA512 f3b0b04c06931a9424a106db6867204ca4db25b5b58e5e6dcd3f624e7e95bd3caadb724018390ccadff6611f6f744b3ef1c9a1b4e6d0a92d361f301faca547c1
- SSDEEP 12288:8SvO2x9mONvKRILSFnOkx2LIaxya5FAQjU/Lik8CQ3uEuYyybAsLAk1:PvO2xJKRI2FOkx2LFEvcUQPxu6Es8k1
- TLSH T115157C31E641C03AD4A7457686BA0BBFA5787D22131565C7E3D43E662FB32D2BA3130E
- MD5 SHA1 SHA512 SSDEEP TLSH
Score
7/10
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
pid Process 5076 f5f73dff - 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 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe Destination IP 2 223.5.5.5 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe Destination IP 10 114.114.114.114 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe Destination IP 11 223.5.5.5 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe - Drops file in System32 directory 15 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\57C8EDB95DF3F0AD4EE2DC2B8CFD4157 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\66F835E41EC6A985EB9271E4A70169D7_CF44E3C99F7F4AC558EEB35244F7E046 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\81B9B36F9ABC4DA631A4713EE66FAEC6_D78A39BE9A7C3823659C09F61E8BD3E8 f5f73dff File created C:\Windows\SysWOW64\f5f73dff 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE f5f73dff File opened for modification C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies f5f73dff - Drops file in Windows directory 2 IoCs
description ioc Process File opened for modification C:\Windows\56e728 f5f73dff File opened for modification C:\Windows\543b70 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.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 f5f73dff Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe - Modifies data under HKEY_USERS 9 IoCs
description ioc Process Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ f5f73dff Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1" f5f73dff Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0" f5f73dff Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1" f5f73dff Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1" f5f73dff Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\WinTrust\Trust Providers\Software Publishing f5f73dff Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix f5f73dff Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:" f5f73dff Set value (str) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:" f5f73dff - Suspicious behavior: EnumeratesProcesses 14 IoCs
pid Process 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 5076 f5f73dff 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe - Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe Token: SeTcbPrivilege 4920 6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe Token: SeDebugPrivilege 5076 f5f73dff Token: SeTcbPrivilege 5076 f5f73dff
Processes
-
C:\Users\Admin\AppData\Local\Temp\6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.exe"C:\Users\Admin\AppData\Local\Temp\6bbb3fcc43e878f9cbf7a7194915b4f5f2a85c0b1f16c3465c1634f83999fabd.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:4920
-
C:\Windows\Syswow64\f5f73dffC:\Windows\Syswow64\f5f73dff1⤵
- 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:5076
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
- Path C:\Windows\SysWOW64\f5f73dff
- Size 896KB
- SHA256 217751f15334149c4c2d1f66877b88a06748983b2ea5af55bcb949b9fcf625a8
- MD5 f4c72aab5982af7541db1e21ee8a8cde
- SHA1 0fa8865c62de5f0698e81d135bed5af37046f61a
- SHA512 59b4e3666f9e97cf2a53092d2fc0ccf40d5c368abeeb0fc768a319e6a16b90748505f2f21eed2be00709e233fc732405b3051812a6f147ca76687cea1d6e6c16
- SSDEEP 12288:PSvO2x9mONvKRILSFnOkx2LIaxya5FAQjU/Lik8CQ3uEuYyybAsLAk1:6vO2xJKRI2FOkx2LFEvcUQPxu6Es8k1
- TLSH T1E6157C31E641C03AD4A7457686BA0BBFA5787D22131565C7E3D43E662FB32D2BA3130E
- MD5 SHA1 SHA512 SSDEEP TLSH